Merge branch 'feature-text' into develop

.gitignore

@@ -2,15 +2,19 @@
 Assets/*
 !Assets/Shaders/
 !Assets/Textures/
+!Assets/Scripts/
+!Assets/UI/
+!Assets/ConformalDecals/
 KSP/
 Library/
 Logs/
 Packages/
 ProjectSettings/
 Temp/
+
+# Unity Assetbundle Manifest Files
 GameData/ConformalDecals/Resources/Resources
-GameData/ConformalDecals/Resources/Resources.manifest
-GameData/ConformalDecals/Resources/conformaldecals.shab.manifest
+GameData/ConformalDecals/Resources/*.manifest
 
 # Unity Project Files
 PartTools.cfg

Assets/ConformalDecals/BoxSlider.cs

@@ -0,0 +1,36 @@
+using System;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    [AddComponentMenu("UI/BoxSlider", 35)]
+    [RequireComponent(typeof(RectTransform))]
+    public class BoxSlider : Selectable, IDragHandler, IInitializePotentialDragHandler, ICanvasElement {
+        [Serializable]
+        public class BoxSliderEvent : UnityEvent<Vector2> { }
+
+        [SerializeField] private RectTransform _handleRect;
+        [SerializeField] private Vector2       _value = Vector2.zero;
+
+        // Allow for delegate-based subscriptions for faster events than 'eventReceiver', and allowing for multiple receivers.
+        [SerializeField] private BoxSliderEvent _onValueChanged = new BoxSliderEvent();
+
+        public BoxSliderEvent OnValueChanged {
+            get => _onValueChanged;
+            set => _onValueChanged = value;
+        }
+
+        // Private fields
+        public void OnDrag(PointerEventData eventData) { }
+
+        public void OnInitializePotentialDrag(PointerEventData eventData) { }
+
+        public void Rebuild(CanvasUpdate executing) { }
+
+        public void LayoutComplete() { }
+
+        public void GraphicUpdateComplete() { }
+    }
+}

Assets/ConformalDecals/ColorBoxSlider.cs

@@ -0,0 +1,13 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class ColorBoxSlider : MonoBehaviour{
+        [SerializeField] private Vector2 _value;
+
+        [SerializeField] private BoxSlider _slider;
+        [SerializeField] private Image     _image;
+
+        public void OnSliderUpdate(Vector2 value) { }
+    }
+}

Assets/ConformalDecals/ColorChannelSlider.cs

@@ -0,0 +1,18 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class ColorChannelSlider : MonoBehaviour {
+        [SerializeField] private float _value;
+        [SerializeField] private int   _channel;
+        [SerializeField] private bool  _hsv;
+
+        [SerializeField] private Selectable _textBox;
+        [SerializeField] private Slider     _slider;
+        [SerializeField] private Image      _image;
+
+        public void OnTextBoxUpdate(string text) { }
+
+        public void OnSliderUpdate(float value) { }
+    }
+}

Assets/ConformalDecals/ColorPickerController.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class ColorPickerController : MonoBehaviour {
+        [SerializeField] private Color      _value;
+        [SerializeField] private Image      _previewImage;
+        [SerializeField] private Selectable _hexTextBox;
+
+        public void Close() { }
+
+        public void OnHexColorUpdate(string text) { }
+    }
+}

Assets/ConformalDecals/ConformalDecals.asmdef

@@ -0,0 +1,3 @@
+{
+	"name": "ConformalDecals"
+}

Assets/ConformalDecals/FontMenuController.cs

@@ -0,0 +1,10 @@
+using UnityEngine;
+
+namespace ConformalDecals.UI {
+    public class FontMenuController : MonoBehaviour {
+        [SerializeField] private GameObject _menuItem;
+        [SerializeField] private GameObject _menuList;
+
+        public void Close() { }
+    }
+}

Assets/ConformalDecals/TextEntryController.cs

@@ -0,0 +1,37 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class TextEntryController : MonoBehaviour {
+        [SerializeField] private Selectable _textBox;
+        [SerializeField] private Button     _fontButton;
+
+        [SerializeField] private Slider _lineSpacingSlider;
+        [SerializeField] private Selectable _lineSpacingTextBox;
+
+        [SerializeField] private Slider _charSpacingSlider;
+        [SerializeField] private Selectable _charSpacingTextBox;
+        
+        [SerializeField] private Toggle _boldButton;
+        [SerializeField] private Toggle _italicButton;
+        [SerializeField] private Toggle _underlineButton;
+        [SerializeField] private Toggle _smallCapsButton;
+        [SerializeField] private Toggle _verticalButton;
+
+        public void Close() { }
+
+        public void OnTextUpdate(string text) { }
+
+        public void OnFontMenu() { }
+
+        public void OnLineSpacingUpdate(float value) { }
+        public void OnLineSpacingUpdate(string text) { }
+        public void OnCharSpacingUpdate(float value) { }
+        public void OnCharSpacingUpdate(string text) { }
+        public void OnBoldUpdate(bool state) { }
+        public void OnItalicUpdate(bool state) { }
+        public void OnUnderlineUpdate(bool state) { }
+        public void OnSmallCapsUpdate(bool state) { }
+        public void OnVerticalUpdate(bool state) { }
+    }
+}

Assets/ConformalDecals/UITag.cs

@@ -0,0 +1 @@
+/Users/drewcassidy/Projects/KSP-Conformal-Decals/Source/ConformalDecals/UI/UITag.cs

Assets/Scripts/TextRenderTest.cs

@@ -0,0 +1,117 @@
+using System.Collections;
+using System.Collections.Generic;
+using TMPro;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+public class TextRenderTest : MonoBehaviour {
+    //[InspectorButton("go")] public bool button;
+
+    public Camera _camera;
+
+    public GameObject _cameraObject;
+
+    public TextMeshPro _tmp;
+
+    public Material _blitMaterial;
+
+    public Material _targetMaterial;
+
+    public                  RenderTexture renderTex;
+    private                 float         pixelDensity   = 8;
+    private                 int           MaxTextureSize = 4096;
+    private static readonly int           Decal          = Shader.PropertyToID("_Decal");
+
+    public const TextureFormat       TextTextureFormat       = TextureFormat.RG16;
+    public const RenderTextureFormat TextRenderTextureFormat = RenderTextureFormat.R8;
+
+    // Start is called before the first frame update
+    void Start() {
+        Debug.Log("starting...");
+
+        StartCoroutine(OnRender());
+    }
+
+    // Update is called once per frame
+    void Update() { }
+
+    private IEnumerator OnRender() {
+        Debug.Log("starting...2");
+
+        // calculate camera and texture size
+        _tmp.ForceMeshUpdate();
+        var mesh = _tmp.mesh;
+        mesh.RecalculateBounds();
+        var bounds = mesh.bounds;
+        Debug.Log(bounds.size);
+
+        var width = bounds.size.x * pixelDensity;
+        var height = bounds.size.y * pixelDensity;
+
+        var widthPoT = Mathf.NextPowerOfTwo((int) width);
+        var heightPoT = Mathf.NextPowerOfTwo((int) height);
+
+        if (widthPoT > MaxTextureSize) {
+            widthPoT /= widthPoT / MaxTextureSize;
+            heightPoT /= widthPoT / MaxTextureSize;
+        }
+
+        if (heightPoT > MaxTextureSize) {
+            widthPoT /= heightPoT / MaxTextureSize;
+            heightPoT /= heightPoT / MaxTextureSize;
+        }
+
+        widthPoT = Mathf.Min(widthPoT, MaxTextureSize);
+        heightPoT = Mathf.Min(heightPoT, MaxTextureSize);
+
+        var widthRatio = widthPoT / width;
+        var heightRatio = heightPoT / height;
+
+        var sizeRatio = Mathf.Min(widthRatio, heightRatio);
+
+        Debug.Log(sizeRatio);
+
+        int scaledHeight = (int) (sizeRatio * height);
+        int scaledWidth = (int) (sizeRatio * width);
+
+        Debug.Log($"width = {scaledWidth}");
+        Debug.Log($"height = {scaledHeight}");
+
+        _camera.orthographicSize = scaledHeight / pixelDensity / 2;
+        _camera.aspect = (float) widthPoT / heightPoT;
+
+        _cameraObject.transform.localPosition = new Vector3(bounds.center.x, bounds.center.y, -1);
+
+        var halfHeight = heightPoT / pixelDensity / 2 / sizeRatio;
+        var halfWidth = widthPoT / pixelDensity / 2 / sizeRatio;
+        var matrix = Matrix4x4.Ortho(bounds.center.x - halfWidth, bounds.center.x + halfWidth,
+            bounds.center.y - halfHeight, bounds.center.y + halfHeight, -1, 1);
+
+        // setup texture
+        var texture = new Texture2D(widthPoT, heightPoT, TextTextureFormat, true);
+        _targetMaterial.SetTexture(Decal, texture);
+
+
+        // setup render texture
+        renderTex = RenderTexture.GetTemporary(widthPoT, heightPoT, 0, TextRenderTextureFormat, RenderTextureReadWrite.Linear, 1);
+        renderTex.autoGenerateMips = false;
+
+        RenderTexture.active = renderTex;
+        GL.PushMatrix();
+        GL.LoadProjectionMatrix(matrix);
+        _blitMaterial.SetPass(0);
+        Graphics.DrawMeshNow(mesh, Matrix4x4.identity);
+        GL.PopMatrix();
+
+        // setup material
+        _blitMaterial.mainTexture = _tmp.font.atlas;
+
+        yield return null;
+
+        RenderTexture.active = renderTex;
+        texture.ReadPixels(new Rect(0, 0, widthPoT, heightPoT), 0, 0, true);
+        texture.Apply(false, true);
+
+        RenderTexture.ReleaseTemporary(renderTex);
+    }
+}

Assets/Shaders/ColorSlider.shader

@@ -0,0 +1,143 @@
+Shader "ConformalDecals/UI/Color Slider"
+{
+    Properties
+    {
+        _Color("Color", Color) = (0,0,0,0)
+        _Radius("Radius", Float) = 4
+        
+        _OutlineGradient("Outline Gradient Step", Range (0, 1)) = 0.6
+        _OutlineOpacity("Outline Opacity", Range (0, 0.5)) = 0.1
+        _OutlineWidth("Outline Width", Float) = 3
+        
+        _StencilComp ("Stencil Comparison", Float) = 8
+        _Stencil ("Stencil ID", Float) = 0
+        _StencilOp ("Stencil Operation", Float) = 0
+        _StencilWriteMask ("Stencil Write Mask", Float) = 255
+        _StencilReadMask ("Stencil Read Mask", Float) = 255
+
+        _ColorMask ("Color Mask", Float) = 15
+
+        [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
+        
+        [Toggle(HUE)] _Hue ("Hue", int) = 0
+        [Toggle(RED)] _Red ("Red", int) = 0
+        [Toggle(GREEN)] _Green ("Green", int) = 0
+        [Toggle(BLUE)] _Blue ("Blue", int) = 0
+
+
+    }
+    SubShader
+    {
+        Tags
+        {
+            "Queue"="Transparent"
+            "IgnoreProjector"="True"
+            "RenderType"="Transparent"
+            "PreviewType"="Plane"
+            "CanUseSpriteAtlas"="True"
+        }
+        Stencil
+        {
+            Ref [_Stencil]
+            Comp [_StencilComp]
+            Pass [_StencilOp]
+            ReadMask [_StencilReadMask]
+            WriteMask [_StencilWriteMask]
+        }
+        
+        Cull Off
+        Lighting Off
+        ZWrite Off
+        ZTest [unity_GUIZTestMode]
+        Blend SrcAlpha OneMinusSrcAlpha
+        ColorMask [_ColorMask]
+        
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #pragma require integers
+            
+            #include "UnityCG.cginc"
+            #include "UnityUI.cginc"
+            #include "HSL.cginc"
+            #include "SDF.cginc"
+            
+            #pragma multi_compile_local _ UNITY_UI_CLIP_RECT
+            #pragma multi_compile_local _ UNITY_UI_ALPHACLIP
+            #pragma multi_compile_local HUE RED GREEN BLUE
+            
+            float4 _ClipRect;
+            float _Radius;
+            float4 _Color;
+
+            float _OutlineGradient;
+            float _OutlineOpacity;
+            float _OutlineWidth;
+            
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                float4 vertex : SV_POSITION;
+                float2 uv : TEXCOORD0;
+                float4 worldPosition : TEXCOORD1;
+            };
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.worldPosition = v.vertex;
+                o.uv = v.uv;
+                return o;
+            }
+            
+            fixed4 frag (v2f i) : SV_Target
+            {
+                float4 color = 1;
+                
+                #ifdef HUE
+                color.rgb = HSV2RGB(float3(i.uv.y, _Color.y, _Color.z));
+                #endif //HUE
+                
+                #ifdef RED
+                color.rgb = float3(i.uv.x, _Color.g, _Color.b);
+                #endif //RED
+                
+                #ifdef GREEN
+                color.rgb = float3(_Color.r, i.uv.x, _Color.b);
+                #endif //GREEN
+                
+                #ifdef BLUE
+                color.rgb = float3(_Color.r, _Color.g, i.uv.x);
+                #endif //BLUE
+                
+                float rrect = sdRoundedUVBox(i.uv, _Radius);
+                float gradient = smoothstep(_OutlineGradient, 1 - _OutlineGradient, i.uv.y);
+                float outlineOpacity = _OutlineOpacity * smoothstep(-1*_OutlineWidth, 0, rrect);
+                
+                color.rgb = lerp(color.rgb, gradient, outlineOpacity);
+
+                color.a = saturate(0.5 - rrect);
+                
+                #ifdef UNITY_UI_CLIP_RECT
+                    color.a *= UnityGet2DClipping(i.worldPosition.xy, _ClipRect);
+                #endif
+
+                #ifdef UNITY_UI_ALPHACLIP
+                    clip (color.a - 0.001);
+                #endif
+                
+                return color;
+            }
+            ENDCG
+        }
+    }
+}

Assets/Shaders/ColorSquare.shader

@@ -0,0 +1,122 @@
+Shader "ConformalDecals/UI/HSV Square"
+{
+    Properties
+    {
+        _Color("Color", Color) = (0,0,0,0)
+        _Radius("Radius", Float) = 4
+
+        _OutlineGradient("Outline Gradient Step", Range (0, 1)) = 0.6
+        _OutlineOpacity("Outline Opacity", Range (0, 0.5)) = 0.1
+        _OutlineWidth("Outline Width", Float) = 3
+        
+        _StencilComp ("Stencil Comparison", Float) = 8
+        _Stencil ("Stencil ID", Float) = 0
+        _StencilOp ("Stencil Operation", Float) = 0
+        _StencilWriteMask ("Stencil Write Mask", Float) = 255
+        _StencilReadMask ("Stencil Read Mask", Float) = 255
+
+        _ColorMask ("Color Mask", Float) = 15
+
+        [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
+    }
+    SubShader
+    {
+        Tags
+        {
+            "Queue"="Transparent"
+            "IgnoreProjector"="True"
+            "RenderType"="Transparent"
+            "PreviewType"="Plane"
+            "CanUseSpriteAtlas"="True"
+        }
+        Stencil
+        {
+            Ref [_Stencil]
+            Comp [_StencilComp]
+            Pass [_StencilOp]
+            ReadMask [_StencilReadMask]
+            WriteMask [_StencilWriteMask]
+        }
+        
+        Cull Off
+        Lighting Off
+        ZWrite Off
+        ZTest [unity_GUIZTestMode]
+        Blend SrcAlpha OneMinusSrcAlpha
+        ColorMask [_ColorMask]
+        
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #pragma require integers
+
+            #include "UnityCG.cginc"
+            #include "UnityUI.cginc"
+            #include "HSL.cginc"
+            #include "SDF.cginc"
+            
+            #pragma multi_compile_local _ UNITY_UI_CLIP_RECT
+            #pragma multi_compile_local _ UNITY_UI_ALPHACLIP
+            
+            float4 _ClipRect;
+            float _Radius;
+            float4 _Color;
+
+            float _OutlineGradient;
+            float _OutlineOpacity;
+            float _OutlineWidth;
+            
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                float4 vertex : SV_POSITION;
+                float2 uv : TEXCOORD0;
+                float4 worldPosition : TEXCOORD1;
+            };
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.worldPosition = v.vertex;
+                o.uv = v.uv;
+                return o;
+            }
+            
+            fixed4 frag (v2f i) : SV_Target
+            {
+                // sample the texture
+                fixed4 color = 1;
+                
+                color.a = saturate(0.5 - sdRoundedUVBox(i.uv, _Radius));
+
+                color.rgb = HSV2RGB(float3(_Color.x, i.uv.x, i.uv.y));
+                
+                float rrect = sdRoundedUVBox(i.uv, _Radius);
+                float gradient = smoothstep(_OutlineGradient, 1 - _OutlineGradient, i.uv.y);
+                float outlineOpacity = _OutlineOpacity * smoothstep(-1*_OutlineWidth, 0, rrect);
+                
+                color.rgb = lerp(color.rgb, gradient, outlineOpacity);
+                
+                #ifdef UNITY_UI_CLIP_RECT
+                    color.a *= UnityGet2DClipping(i.worldPosition.xy, _ClipRect);
+                #endif
+
+                #ifdef UNITY_UI_ALPHACLIP
+                    clip (color.a - 0.001);
+                #endif
+                
+                return color;
+            }
+            ENDCG
+        }
+    }
+}

Assets/Shaders/ColorSwatch.shader

@@ -0,0 +1,120 @@
+Shader "ConformalDecals/UI/Color Swatch"
+{
+    Properties
+    {
+        _Color("Color", Color) = (0,0,0,0)
+        _Radius("Radius", Float) = 4
+        
+        _OutlineGradient("Outline Gradient Step", Range (0, 1)) = 0.6
+        _OutlineOpacity("Outline Opacity", Range (0, 0.5)) = 0.1
+        _OutlineWidth("Outline Width", Float) = 3
+        
+        _StencilComp ("Stencil Comparison", Float) = 8
+        _Stencil ("Stencil ID", Float) = 0
+        _StencilOp ("Stencil Operation", Float) = 0
+        _StencilWriteMask ("Stencil Write Mask", Float) = 255
+        _StencilReadMask ("Stencil Read Mask", Float) = 255
+
+        _ColorMask ("Color Mask", Float) = 15
+
+        [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
+    }
+    SubShader
+    {
+        Tags
+        {
+            "Queue"="Transparent"
+            "IgnoreProjector"="True"
+            "RenderType"="Transparent"
+            "PreviewType"="Plane"
+            "CanUseSpriteAtlas"="True"
+        }
+        Stencil
+        {
+            Ref [_Stencil]
+            Comp [_StencilComp]
+            Pass [_StencilOp]
+            ReadMask [_StencilReadMask]
+            WriteMask [_StencilWriteMask]
+        }
+        
+        Cull Off
+        Lighting Off
+        ZWrite Off
+        ZTest [unity_GUIZTestMode]
+        Blend SrcAlpha OneMinusSrcAlpha
+        ColorMask [_ColorMask]
+        
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #pragma require integers
+            
+            #include "UnityCG.cginc"
+            #include "UnityUI.cginc"
+            #include "HSL.cginc"
+            #include "SDF.cginc"
+            
+            #pragma multi_compile_local _ UNITY_UI_CLIP_RECT
+            #pragma multi_compile_local _ UNITY_UI_ALPHACLIP
+            #pragma multi_compile_local HUE RED GREEN BLUE
+            
+            float4 _ClipRect;
+            float _Radius;
+            float4 _Color;
+
+            float _OutlineGradient;
+            float _OutlineOpacity;
+            float _OutlineWidth;
+            
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                float4 vertex : SV_POSITION;
+                float2 uv : TEXCOORD0;
+                float4 worldPosition : TEXCOORD1;
+            };
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.worldPosition = v.vertex;
+                o.uv = v.uv;
+                return o;
+            }
+            
+            fixed4 frag (v2f i) : SV_Target
+            {
+                fixed4 color = _Color;
+                
+                color.a = saturate(0.5 - sdRoundedUVBox(i.uv, _Radius));
+                
+                float rrect = sdRoundedUVBox(i.uv, _Radius);
+                float gradient = smoothstep(_OutlineGradient, 1 - _OutlineGradient, i.uv.y);
+                float outlineOpacity = _OutlineOpacity * smoothstep(-1*_OutlineWidth, 0, rrect);
+                
+                color.rgb = lerp(color.rgb, gradient, outlineOpacity);
+                
+                #ifdef UNITY_UI_CLIP_RECT
+                    color.a *= UnityGet2DClipping(i.worldPosition.xy, _ClipRect);
+                #endif
+
+                #ifdef UNITY_UI_ALPHACLIP
+                    clip (color.a - 0.001);
+                #endif
+                
+                return color;
+            }
+            ENDCG
+        }
+    }
+}

Assets/Shaders/DecalsCommon.cginc

@@ -4,7 +4,7 @@
 #include "AutoLight.cginc"
 #include "Lighting.cginc"
 
-#define CLIP_MARGIN 0.1
+#define CLIP_MARGIN 0.05
 #define EDGE_MARGIN 0.01
 
 // UNIFORM VARIABLES
@@ -85,7 +85,7 @@ struct DecalSurfaceInput
     
     #ifdef DECAL_BASE_NORMAL
         float3 normal;
-    #endif
+    #endif //DECAL_BASE_NORMAL
 
     float3 vertex_normal;
     float3 viewDir;
@@ -150,14 +150,7 @@ inline float BoundsDist(float3 p, float3 normal, float3 projNormal) {
         float dist = max(max(q.x, q.y), q.z); // pseudo SDF
         float ndist = EDGE_MARGIN - dot(normal, projNormal); // SDF to normal
         return 10 * max(dist, ndist); // return intersection
-    #endif
-}
-
-inline float SDFAA(float dist) {
-    float ddist = length(float2(ddx(dist), ddy(dist)));
-    float pixelDist = dist / ddist;
-    return saturate(0.5-pixelDist);
-    return saturate(0.5 - dist);
+    #endif //DECAL_PREVIEW
 }
 
 #endif

Assets/Shaders/HSL.cginc

@@ -0,0 +1,17 @@
+#ifndef HSL_INCLUDED
+#define HSL_INCLUDED
+
+inline float3 HSL2RGB(float3 hsl) {
+    int3 n = int3(0, 8, 4);
+    float3 k = (n + hsl.x * 12) % 12;
+    float a = hsl.y * min(hsl.z, 1 - hsl.z);
+    return hsl.z - a * max(-1, min(k - 3, min(9 - k, 1)));
+}
+
+inline float3 HSV2RGB(float3 hsv) {
+    int3 n = int3(5, 3, 1);
+    float3 k = (n + hsv.x * 6) % 6;
+    return hsv.z - hsv.z * hsv.y * max(0, min(1, min(k, 4 - k)));
+}
+
+#endif

Assets/Shaders/SDF.cginc

@@ -0,0 +1,45 @@
+#ifndef SDF_INCLUDED
+#define SDF_INCLUDED
+
+// based on functions by Inigo Quilez
+// https://iquilezles.org/www/articles/distfunctions2d/distfunctions2d.htm
+
+// SDF of a box
+float sdBox( in float2 p, in float2 b ) {
+    float2 d = abs(p)-b;
+    return length(max(d,0.0)) + min(max(d.x,d.y),0.0);
+}
+
+// SDF of a box with corner radius r
+float sdRoundedBox( in float2 p, in float2 b, in float r ) {
+    float2 d = abs(p)-b+r;
+    return min(max(d.x,d.y),0.0) + length(max(d,0.0)) - r;
+}
+
+// SDF of a box with corner radius r, based on the current UV position
+// UV must be ∈ (0,1), with (0,0) on one corner
+float sdRoundedUVBox( float2 uv, float r ) {
+    float dx = ddx(uv.x);
+    float dy = ddy(uv.y);
+    
+    float2 dim = abs(float2(1/dx, 1/dy));
+    float2 halfDim = dim / 2;
+    float2 pos = (dim * uv) - halfDim;
+    
+    return sdRoundedBox(pos, halfDim, r);
+}
+
+inline float SDFdDist(float dist) {
+    return length(float2(ddx(dist), ddy(dist)));
+}
+
+inline float SDFAA(float dist, float ddist) {
+    float pixelDist = dist / ddist;
+    return saturate(0.5-pixelDist);
+}
+
+inline float SDFAA(float dist) {
+    return SDFAA(dist, SDFdDist(dist));
+}
+
+#endif

Assets/Shaders/StandardDecal.shader

@@ -69,6 +69,7 @@
             #include "UnityCG.cginc"
             #include "DecalsCommon.cginc"
             #include "DecalsSurface.cginc"
+            #include "SDF.cginc"
             #include "StandardDecal.cginc"
  
             ENDCG
@@ -98,6 +99,7 @@
             #include "UnityCG.cginc"
             #include "DecalsCommon.cginc"
             #include "DecalsSurface.cginc"
+            #include "SDF.cginc"
             #include "StandardDecal.cginc"
 
             ENDCG

Assets/Shaders/TextBlit.shader

@@ -0,0 +1,73 @@
+Shader "ConformalDecals/Text Blit"
+{
+    Properties
+    {
+        _MainTex("_MainTex (RGB spec(A))", 2D) = "white" {}
+        
+        _WeightNormal("Weight Normal", float) = 0
+        _WeightBold("Weight Bold", float) = 0.5
+        
+        _ScaleRatioA("Scale RatioA", float) = 1
+        _ScaleRatioB("Scale RatioB", float) = 1
+        _ScaleRatioC("Scale RatioC", float) = 1
+    }
+    
+    SubShader
+    {
+        Tags { "Queue" = "Transparent" }
+        Cull Off
+        ZWrite Off 
+        
+        Pass
+        {
+            BlendOp Max
+
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+
+            sampler2D _MainTex;
+            
+            // font weights to fake bold
+            float _WeightNormal;
+            float _WeightBold;
+            
+            // no idea what these do
+            float _ScaleRatioA;
+            float _ScaleRatioB;
+            float _ScaleRatioC;
+
+            #include "UnityCG.cginc"
+            #include "Lighting.cginc"
+            #include "AutoLight.cginc"
+
+            struct v2f {
+                float4 pos : SV_POSITION;
+                float4 uv : TEXCOORD0; // u, v, bias, 0
+            };
+
+            v2f vert(float4 vertex : POSITION, float2 uv0 : TEXCOORD0, float2 uv1 : TEXCOORD1) {
+                float bold = step(uv1.y, 0);
+                float weight = lerp(_WeightNormal, _WeightBold, bold) * _ScaleRatioA / 8.0;
+                float bias = 1 - weight;
+                
+                v2f o;
+                o.pos = UnityObjectToClipPos(vertex);
+                o.uv = float4(uv0.x, uv0.y, bias, weight);
+                return o;
+            }
+
+            fixed4 frag (v2f i) : SV_Target {
+                float2 uv = i.uv.xy;
+                float bias = i.uv.z;
+                float weight = i.uv.w;
+                
+                fixed4 c = 0;
+                c.r = saturate(tex2D(_MainTex,(uv)).a + weight);
+                return c;
+            }
+
+            ENDCG
+        } 
+    }
+}    

Assets/Shaders/TextDecal.cginc

@@ -0,0 +1,49 @@
+float4 _DecalColor;
+
+float4 _OutlineColor;
+float _OutlineWidth;
+
+void surf(DecalSurfaceInput IN, inout SurfaceOutput o) {
+    float4 color = _DecalColor;
+    float dist = _Cutoff - tex2D(_Decal, IN.uv_decal).r; // text distance
+    
+    #ifdef DECAL_OUTLINE
+        // Outline
+        float outlineOffset = _OutlineWidth * 0.25;
+        float outlineRadius = _OutlineWidth * 0.5;
+        
+        #ifdef DECAL_FILL
+            // Outline and Fill
+            float outlineDist = -dist - outlineOffset;
+            float outlineFactor = SDFAA(outlineDist);
+            dist -= outlineOffset;
+            color = lerp(_DecalColor, _OutlineColor, outlineFactor);
+        #else
+            // Outline Only
+            float outlineDist = abs(dist) - outlineOffset;
+            dist = outlineDist;
+            color = _OutlineColor;
+        #endif
+    #endif
+
+    dist = max(dist, BoundsDist(IN.uv, IN.vertex_normal, _DecalNormal));
+    float ddist = SDFdDist(dist); // distance gradient magnitude
+    o.Alpha = _DecalOpacity * SDFAA(dist, ddist);
+    o.Albedo = UnderwaterFog(IN.worldPosition, color).rgb;
+
+    #ifdef DECAL_BASE_NORMAL
+        float3 normal = IN.normal;
+        float wearFactor = 1 - normal.z;
+        float wearFactorAlpha = saturate(_EdgeWearStrength * wearFactor);
+        o.Alpha *= saturate(1 + _EdgeWearOffset - saturate(_EdgeWearStrength * wearFactor));
+    #endif
+
+    #ifdef DECAL_SPECMAP
+        float4 specular = tex2D(_SpecMap, IN.uv_specmap);
+        o.Gloss = specular.r;
+        o.Specular = _Shininess;
+    #endif
+
+    half rim = 1.0 - saturate(dot(normalize(IN.viewDir), o.Normal));
+    o.Emission = (_RimColor.rgb * pow(rim, _RimFalloff)) * _RimColor.a;
+}

Assets/Shaders/TextDecal.shader

@@ -0,0 +1,112 @@
+Shader "ConformalDecals/Decal/Text"
+{
+    Properties
+    {
+        [Header(Decal)]
+        [Toggle(DECAL_FILL)] _Fill ("Fill", int) = 0
+        _Decal("Decal Texture", 2D) = "gray" {}
+        _DecalColor("Decal Color", Color) = (1,1,1,1)
+        
+        _Weight("Text Weight", Range(0,1)) = 0
+        
+        [Header(Outline)]
+        [Toggle(DECAL_OUTLINE)] _Outline ("Outline", int) = 0
+        _OutlineColor("Outline Color", Color) = (0,0,0,1)
+        _OutlineWidth("Outline Width", Range(0,1)) = 0.1
+
+        [Header(Normal)]
+        [Toggle(DECAL_BASE_NORMAL)] _BaseNormal ("Use Base Normal", int) = 0
+        _BumpMap("Bump Map", 2D) = "bump" {}
+        _EdgeWearStrength("Edge Wear Strength", Range(0,500)) = 100
+        _EdgeWearOffset("Edge Wear Offset", Range(0,1)) = 0.1
+    
+        [Header(Specularity)]
+        [Toggle(DECAL_SPECMAP)] _Decal_SpecMap ("Has SpecMap", int) = 0
+        _SpecMap ("Specular Map)", 2D) = "black" {}
+        _SpecColor ("_SpecColor", Color) = (0.25, 0.25, 0.25, 1)
+        _Shininess ("Shininess", Range (0.03, 10)) = 0.3
+
+        _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
+        _DecalOpacity("Opacity", Range(0,1) ) = 1
+        _Background("Background Color", Color) = (0.9,0.9,0.9,0.7)
+        
+        [Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull", int) = 2
+        [Toggle] _ZWrite ("ZWrite", Float) = 1.0
+
+        [Toggle(DECAL_PREVIEW)] _Preview ("Preview", int) = 0
+
+        [Header(Effects)]
+        [PerRendererData]_Opacity("_Opacity", Range(0,1) ) = 1
+        _Color("_Color", Color) = (1,1,1,1)
+        [PerRendererData]_RimFalloff("_RimFalloff", Range(0.01,5) ) = 0.1
+        [PerRendererData]_RimColor("_RimColor", Color) = (0,0,0,0)
+        [PerRendererData]_UnderwaterFogFactor ("Underwater Fog Factor", Range(0,1)) = 0
+    }
+    SubShader
+    {
+        Tags { "Queue" = "Geometry+100" "IgnoreProjector" = "true" "DisableBatching" = "true"}
+        Cull [_Cull]
+        
+        Pass
+        {
+            Name "FORWARD"
+            Tags { "LightMode" = "ForwardBase" }
+            ZWrite [_ZWrite] 
+            ZTest LEqual  
+            Blend SrcAlpha OneMinusSrcAlpha
+
+            CGPROGRAM
+            #pragma vertex vert_forward
+            #pragma fragment frag_forward
+
+            #pragma multi_compile_fwdbase nolightmap nodirlightmap nodynlightmap
+            #pragma skip_variants SHADOWS_DEPTH SHADOWS_CUBE SHADOWS_SHADOWMASK LIGHTMAP_SHADOW_MIXING POINT_COOKIE
+            #pragma multi_compile_local __ DECAL_PREVIEW
+            #pragma multi_compile_local __ DECAL_BASE_NORMAL
+            #pragma multi_compile_local __ DECAL_SPECMAP
+            #pragma multi_compile_local __ DECAL_OUTLINE
+            #pragma multi_compile_local __ DECAL_FILL
+
+            #include "UnityCG.cginc"
+            #include "DecalsCommon.cginc"
+            #include "DecalsSurface.cginc"
+            #include "SDF.cginc"
+            #include "TextDecal.cginc"
+ 
+            ENDCG
+        } 
+        
+        Pass
+        {
+            Name "FORWARD"
+            Tags { "LightMode" = "ForwardAdd" }
+            ZWrite Off
+            ZTest LEqual  
+            Blend One One
+            Offset -1, -1
+
+            CGPROGRAM
+            #pragma vertex vert_forward
+            #pragma fragment frag_forward
+
+            #pragma multi_compile_fwdadd nolightmap nodirlightmap nodynlightmap
+            #pragma skip_variants SHADOWS_DEPTH SHADOWS_CUBE SHADOWS_SHADOWMASK LIGHTMAP_SHADOW_MIXING POINT_COOKIE
+            #pragma multi_compile_local __ DECAL_PREVIEW
+            #pragma multi_compile_local __ DECAL_BASE_NORMAL
+            #pragma multi_compile_local __ DECAL_SPECMAP
+            #pragma multi_compile_local __ DECAL_OUTLINE
+            #pragma multi_compile_local __ DECAL_FILL
+  
+            #include "UnityCG.cginc"
+            #include "DecalsCommon.cginc"
+            #include "DecalsSurface.cginc"
+            #include "SDF.cginc"
+            #include "TextDecal.cginc"
+
+            ENDCG
+        } 
+        
+        // shadow casting support
+        UsePass "Legacy Shaders/VertexLit/SHADOWCASTER"
+    }
+}    

Assets/UI/BSlider.mat

@@ -0,0 +1,93 @@
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Assets/UI/GSlider.mat

@@ -0,0 +1,93 @@
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Assets/UI/HSLSlider.mat

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Assets/UI/HSLSquare.mat

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+    - _GlossyReflections: 1
+    - _Hue: 0.566
+    - _Metallic: 0
+    - _Mode: 0
+    - _OcclusionStrength: 1
+    - _OutlineGradient: 0.55
+    - _OutlineOpacity: 0.15
+    - _OutlineWidth: 2.5
+    - _Parallax: 0.02
+    - _Radius: 4
+    - _SmoothnessTextureChannel: 0
+    - _SpecularHighlights: 1
+    - _SrcBlend: 1
+    - _Stencil: 0
+    - _StencilComp: 8
+    - _StencilOp: 0
+    - _StencilReadMask: 255
+    - _StencilWriteMask: 255
+    - _UVSec: 0
+    - _UseUIAlphaClip: 0
+    - _ZWrite: 1
+    m_Colors:
+    - _Color: {r: 1, g: 1, b: 1, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}

Assets/UI/RSlider.mat

@@ -0,0 +1,93 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 6
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: RSlider
+  m_Shader: {fileID: 4800000, guid: a6b2542ba8ea844e7b0526fab69d88ed, type: 3}
+  m_ShaderKeywords: RED
+  m_LightmapFlags: 4
+  m_EnableInstancingVariants: 0
+  m_DoubleSidedGI: 0
+  m_CustomRenderQueue: -1
+  stringTagMap: {}
+  disabledShaderPasses: []
+  m_SavedProperties:
+    serializedVersion: 3
+    m_TexEnvs:
+    - _BumpMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailAlbedoMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailMask:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailNormalMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _EmissionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MainTex:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MetallicGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _OcclusionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _ParallaxMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    m_Floats:
+    - _Blue: 0
+    - _BumpScale: 1
+    - _ColorMask: 15
+    - _Cutoff: 0.5
+    - _DetailNormalMapScale: 1
+    - _DstBlend: 0
+    - _GlossMapScale: 1
+    - _Glossiness: 0.5
+    - _GlossyReflections: 1
+    - _GradientStep: 0.2
+    - _Green: 0
+    - _Hue: 0
+    - _Metallic: 0
+    - _Mode: 0
+    - _OcclusionStrength: 1
+    - _OutlineGradient: 0.7
+    - _OutlineOpacity: 0.15
+    - _OutlineWidth: 2.5
+    - _Parallax: 0.02
+    - _Radius: 4
+    - _Red: 1
+    - _SmoothnessTextureChannel: 0
+    - _SpecularHighlights: 1
+    - _SrcBlend: 1
+    - _Stencil: 0
+    - _StencilComp: 8
+    - _StencilOp: 0
+    - _StencilReadMask: 255
+    - _StencilWriteMask: 255
+    - _UVSec: 0
+    - _UseUIAlphaClip: 0
+    - _ZWrite: 1
+    m_Colors:
+    - _Color: {r: 0, g: 0, b: 0, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}

Assets/UI/Swatch.mat

@@ -0,0 +1,92 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 6
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: Swatch
+  m_Shader: {fileID: 4800000, guid: a6e04e87fe864ed6a3f6a3ce52f57024, type: 3}
+  m_ShaderKeywords: RED
+  m_LightmapFlags: 4
+  m_EnableInstancingVariants: 0
+  m_DoubleSidedGI: 0
+  m_CustomRenderQueue: -1
+  stringTagMap: {}
+  disabledShaderPasses: []
+  m_SavedProperties:
+    serializedVersion: 3
+    m_TexEnvs:
+    - _BumpMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailAlbedoMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailMask:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailNormalMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _EmissionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MainTex:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MetallicGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _OcclusionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _ParallaxMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    m_Floats:
+    - _Blue: 0
+    - _BumpScale: 1
+    - _ColorMask: 15
+    - _Cutoff: 0.5
+    - _DetailNormalMapScale: 1
+    - _DstBlend: 0
+    - _GlossMapScale: 1
+    - _Glossiness: 0.5
+    - _GlossyReflections: 1
+    - _Green: 0
+    - _Hue: 0
+    - _Metallic: 0
+    - _Mode: 0
+    - _OcclusionStrength: 1
+    - _OutlineGradient: 0.3
+    - _OutlineOpacity: 0.15
+    - _OutlineWidth: 2.5
+    - _Parallax: 0.02
+    - _Radius: 4
+    - _Red: 1
+    - _SmoothnessTextureChannel: 0
+    - _SpecularHighlights: 1
+    - _SrcBlend: 1
+    - _Stencil: 0
+    - _StencilComp: 8
+    - _StencilOp: 0
+    - _StencilReadMask: 255
+    - _StencilWriteMask: 255
+    - _UVSec: 0
+    - _UseUIAlphaClip: 0
+    - _ZWrite: 1
+    m_Colors:
+    - _Color: {r: 0.5176471, g: 0.5019608, b: 0.5019608, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}

GameData/ConformalDecals/Localization/en-us.cfg

@@ -18,6 +18,14 @@ Localization
     #LOC_ConformalDecals_gui-aspectratio = Aspect Ratio
     #LOC_ConformalDecals_gui-select-flag = Select Flag
     #LOC_ConformalDecals_gui-reset-flag = Reset Flag
+    #LOC_ConformalDecals_gui-set-text = Set Text
+    #LOC_ConformalDecals_gui-group-fill = Fill
+    #LOC_ConformalDecals_gui-group-outline = Outline
+    #LOC_ConformalDecals_gui-fill = Fill
+    #LOC_ConformalDecals_gui-set-fill-color = Set Fill Color
+    #LOC_ConformalDecals_gui-outline = Outline
+    #LOC_ConformalDecals_gui-outline-width = Outline Width
+    #LOC_ConformalDecals_gui-set-outline-color = Set Outline Color
 
     // PARTS
 
@@ -26,6 +34,11 @@ Localization
     #LOC_ConformalDecals_flag-description = A simple switchable flag. Can either use the mission flag or select a specific flag to use.
     #LOC_ConformalDecals_flag-tags = conformal decal sticker flag
 
+    // Text
+    #LOC_ConformalDecals_text-title = CDL-T Text Decal
+    #LOC_ConformalDecals_text-description = A decal that can display custom text in a variety of fonts
+    #LOC_ConformalDecals_text-tags = conformal decal sticker text font
+
     // Generic Decals
     #LOC_ConformalDecals_generic-title = CDL-1 Generic Decal
     #LOC_ConformalDecals_generic-description = A set of generic warning decals and signs to add to your vehicles. 

GameData/ConformalDecals/Parts/decal-text.cfg

@@ -0,0 +1,63 @@
+PART
+{
+  name = conformaldecals-text
+  module = Part
+  author = Andrew Cassidy
+  MODEL
+  {
+    model = ConformalDecals/Assets/decal-blank
+    scale = 1.0, 1.0, 1.0
+  }
+  rescaleFactor = 1
+
+  // Attachment
+  attachRules = 1,1,0,0,1
+  node_attach = 0.0, 0.0, 0.1, 0.0, 0.0, -1.0
+
+  // Tech
+  TechRequired = start
+
+  // Info
+  cost = 75
+  category = Structural
+
+  // CDL-T Text Decal
+  title = #LOC_ConformalDecals_text-title
+
+
+  // Peel-N-Stik Adhesive Decals
+  manufacturer = #LOC_ConformalDecals_agent-peel-n-stick_title 
+
+  // A decal that can display custom text in a variety of fonts
+  description = #LOC_ConformalDecals_text-description
+
+
+  // conformal decal sticker text font
+  tags = #LOC_ConformalDecals_text-tags
+
+  bulkheadProfiles = srf
+
+  // Parameters
+  mass = 0.0005
+  dragModel = NONE
+  angularDrag = 0.0
+  crashTolerance = 10
+  maxTemp = 2000
+  breakingForce = 350
+  breakingTorque = 150
+  physicalSignificance = NONE
+
+  MODULE
+  {
+    name = ModuleConformalText
+
+    text = Text
+
+    shader = ConformalDecals/Decal/Text
+    useBaseNormal = true
+    scaleMode = MINIMUM
+
+    defaultDepth = 0.2
+    defaultCutoff = 0.5
+  }
+}

GameData/ConformalDecals/Resources/Categories.cfg

@@ -1,6 +1,7 @@
 // Custom category, requires WildBlueTools to work
 MODCAT
 {
+  name = conformaldecals
   title = #LOC_ConformalDecals_category-decals_title // Decals
 
   folderName = ConformalDecals

GameData/ConformalDecals/Resources/ConformalDecals.cfg

@@ -20,4 +20,41 @@ CONFORMALDECALS {
     shader = KSP/Specular (Transparent)
     shader = Solid Color (Alpha)
   }
+
+  FONT {
+    name = LiberationSans SDF
+    title = Liberation Sans
+  }
+
+  FONT {
+    name = Calibri SDF
+    title = Calibri
+  }
+
+  FONT {
+    name = NotoSans-Regular SDF
+    title = Noto Sans
+  }
+
+  FONT {
+    name = Waukegan LDO Extended SDF
+    title = Waukegan Extended
+  }
+
+  FONT {
+    name = Nasalization SDF
+    title = Nasalization
+  }
+
+  FONT {
+    name = Helvetica SDF
+    title = Helvetica
+  }
+
+  FONT {
+    name = amarurgt SDF
+    title = Amarillo USAF
+    style = 32
+    styleMask = 4
+  }
 }

GameData/ConformalDecals/Resources/conformaldecals.kspfont

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8580f3c17793051fdc08447401fb7920665ad681ff352588508044b662a3240b
+size 364900

Source/ConformalDecals/ConformalDecals.csproj

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+    <Import Project="$(MSBuildExtensionsPath)/$(MSBuildToolsVersion)/Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)/$(MSBuildToolsVersion)/Microsoft.Common.props')" />
     <PropertyGroup>
         <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
         <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -17,7 +17,7 @@
         <DebugSymbols>true</DebugSymbols>
         <DebugType>full</DebugType>
         <Optimize>false</Optimize>
-        <OutputPath>bin\Debug\</OutputPath>
+        <OutputPath>bin/Debug/</OutputPath>
         <DefineConstants>DEBUG;TRACE</DefineConstants>
         <ErrorReport>prompt</ErrorReport>
         <WarningLevel>4</WarningLevel>
@@ -25,12 +25,12 @@
     <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
         <DebugType>pdbonly</DebugType>
         <Optimize>true</Optimize>
-        <OutputPath>bin\Release\</OutputPath>
+        <OutputPath>bin/Release/</OutputPath>
         <DefineConstants>TRACE</DefineConstants>
         <ErrorReport>prompt</ErrorReport>
         <WarningLevel>4</WarningLevel>
-        <DocumentationFile>bin\Release\ConformalDecals.xml</DocumentationFile>
-        <NoWarn>CS1591</NoWarn>
+        <DocumentationFile>bin/Release/ConformalDecals.xml</DocumentationFile>
+        <NoWarn>CS1591,CS0649</NoWarn>
     </PropertyGroup>
     <ItemGroup>
         <Reference Include="Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
@@ -41,35 +41,73 @@
         </Reference>
         <Reference Include="System" />
         <Reference Include="UnityEngine, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
-          <HintPath>dlls\UnityEngine.dll</HintPath>
+          <HintPath>dlls/UnityEngine.dll</HintPath>
+        </Reference>
+        <Reference Include="UnityEngine.AssetBundleModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
+          <HintPath>dlls/UnityEngine.AssetBundleModule.dll</HintPath>
         </Reference>
         <Reference Include="UnityEngine.CoreModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
-          <HintPath>dlls\UnityEngine.CoreModule.dll</HintPath>
+          <HintPath>dlls/UnityEngine.CoreModule.dll</HintPath>
         </Reference>
         <Reference Include="UnityEngine.PhysicsModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
-          <HintPath>dlls\UnityEngine.PhysicsModule.dll</HintPath>
+          <HintPath>dlls/UnityEngine.PhysicsModule.dll</HintPath>
+        </Reference>
+        <Reference Include="UnityEngine.TextCoreModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
+          <HintPath>dlls/UnityEngine.TextCoreModule.dll</HintPath>
+        </Reference>
+        <Reference Include="UnityEngine.TextRenderingModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
+          <HintPath>dlls/UnityEngine.TextRenderingModule.dll</HintPath>
+        </Reference>
+        <Reference Include="UnityEngine.UI, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null">
+          <HintPath>dlls/UnityEngine.UI.dll</HintPath>
+        </Reference>
+        <Reference Include="UnityEngine.UIElementsModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
+          <HintPath>dlls/UnityEngine.UIElementsModule.dll</HintPath>
+        </Reference>
+        <Reference Include="UnityEngine.UIModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
+          <HintPath>dlls/UnityEngine.UIModule.dll</HintPath>
         </Reference>
     </ItemGroup>
     <ItemGroup>
         <Compile Include="DecalConfig.cs" />
         <Compile Include="DecalIconFixer.cs" />
         <Compile Include="DecalPropertyIDs.cs" />
-        <Compile Include="MaterialProperties\MaterialColorProperty.cs" />
-        <Compile Include="MaterialProperties\MaterialFloatProperty.cs" />
-        <Compile Include="MaterialProperties\MaterialKeywordProperty.cs" />
-        <Compile Include="MaterialProperties\MaterialProperty.cs" />
-        <Compile Include="MaterialProperties\MaterialPropertyCollection.cs" />
-        <Compile Include="MaterialProperties\MaterialTextureProperty.cs" />
+        <Compile Include="MaterialProperties/MaterialColorProperty.cs" />
+        <Compile Include="MaterialProperties/MaterialFloatProperty.cs" />
+        <Compile Include="MaterialProperties/MaterialKeywordProperty.cs" />
+        <Compile Include="MaterialProperties/MaterialProperty.cs" />
+        <Compile Include="MaterialProperties/MaterialPropertyCollection.cs" />
+        <Compile Include="MaterialProperties/MaterialTextureProperty.cs" />
         <Compile Include="ModuleConformalFlag.cs" />
+        <Compile Include="ModuleConformalText.cs" />
         <Compile Include="ProjectionTarget.cs" />
         <Compile Include="ModuleConformalDecal.cs" />
-        <Compile Include="Properties\AssemblyInfo.cs" />
-        <Compile Include="Test\TestLayers.cs" />
-        <Compile Include="Util\Logging.cs" />
-        <Compile Include="Util\OrientedBounds.cs" />
-        <Compile Include="Util\ParseUtil.cs" />
+        <Compile Include="Properties/AssemblyInfo.cs" />
+        <Compile Include="Text/DecalFont.cs" />
+        <Compile Include="Text/FontLoader.cs" />
+        <Compile Include="Text/TextRenderer.cs" />
+        <Compile Include="Text/DecalText.cs" />
+        <Compile Include="Test/TestLayers.cs" />
+        <Compile Include="Text\DecalTextStyle.cs" />
+        <Compile Include="Text\TextRenderOutput.cs" />
+        <Compile Include="Text\TextRenderJob.cs" />
+        <Compile Include="UI/ColorPickerController.cs" />
+        <Compile Include="UI/FontMenuController.cs" />
+        <Compile Include="UI/FontMenuItem.cs" />
+        <Compile Include="UI/TextEntryController.cs" />
+        <Compile Include="UI/UILoader.cs" />
+        <Compile Include="UI/UITag.cs" />
+        <Compile Include="UI\ColorBoxSlider.cs" />
+        <Compile Include="UI\ColorChannelSlider.cs" />
+        <Compile Include="Util/Logging.cs" />
+        <Compile Include="Util/OrientedBounds.cs" />
+        <Compile Include="Util/TextureUtils.cs" />
+        <Compile Include="Util/ParseUtil.cs" />
+        <Compile Include="UI/BoxSlider.cs" />
+        <Compile Include="Util\ColorHSL.cs" />
+        <Compile Include="Util\ColorHSV.cs" />
     </ItemGroup>
-    <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+    <Import Project="$(MSBuildToolsPath)/Microsoft.CSharp.targets" />
     <PropertyGroup>
         <PostBuildEvent>sh -e -c "cp -v '$(TargetPath)' '$(SolutionDir)/../GameData/ConformalDecals/Plugins'"</PostBuildEvent>
     </PropertyGroup>

Source/ConformalDecals/DecalConfig.cs

@@ -1,13 +1,18 @@
+using System;
 using System.Collections.Generic;
+using ConformalDecals.Text;
 using ConformalDecals.Util;
+using TMPro;
+using UniLinq;
 using UnityEngine;
 
 namespace ConformalDecals {
     public static class DecalConfig {
-        private static Texture2D    _blankNormal;
-        private static List<string> _shaderBlacklist;
-        private static int          _decalLayer = 31;
-        private static bool         _selectableInFlight;
+        private static Texture2D                     _blankNormal;
+        private static List<string>                  _shaderBlacklist;
+        private static Dictionary<string, DecalFont> _fontList;
+        private static int                           _decalLayer = 31;
+        private static bool                          _selectableInFlight;
 
         private struct LegacyShaderEntry {
             public string   name;
@@ -37,12 +42,17 @@ namespace ConformalDecals {
             },
         };
 
+
         public static Texture2D BlankNormal => _blankNormal;
 
         public static int DecalLayer => _decalLayer;
 
         public static bool SelectableInFlight => _selectableInFlight;
 
+        public static IEnumerable<DecalFont> Fonts => _fontList.Values;
+        
+        public static DecalFont FallbackFont { get; private set; }
+
         public static bool IsBlacklisted(Shader shader) {
             return IsBlacklisted(shader.name);
         }
@@ -63,14 +73,36 @@ namespace ConformalDecals {
             return false;
         }
 
+        public static DecalFont GetFont(string name) {
+            if (_fontList.TryGetValue(name, out var font)) {
+                return font;
+            }
+            else {
+                throw new KeyNotFoundException($"Font {name} not found");
+            }
+        }
+
         private static void ParseConfig(ConfigNode node) {
+
+            ParseUtil.ParseIntIndirect(ref _decalLayer, node, "decalLayer");
+            ParseUtil.ParseBoolIndirect(ref _selectableInFlight, node, "selectableInFlight");
+
             foreach (var blacklist in node.GetNodes("SHADERBLACKLIST")) {
                 foreach (var shaderName in blacklist.GetValuesList("shader")) {
                     _shaderBlacklist.Add(shaderName);
                 }
-
-                ParseUtil.ParseIntIndirect(ref _decalLayer, node, "decalLayer");
-                ParseUtil.ParseBoolIndirect(ref _selectableInFlight, node, "selectableInFlight");
+            }
+            
+            var allFonts = Resources.FindObjectsOfTypeAll<TMP_FontAsset>();
+            
+            foreach (var fontNode in node.GetNodes("FONT")) {
+                try {
+                    var font = new DecalFont(fontNode, allFonts);
+                    _fontList.Add(font.Name, font);
+                }
+                catch (Exception e) {
+                    Debug.LogException(e);
+                }
             }
         }
 
@@ -96,6 +128,7 @@ namespace ConformalDecals {
         // ReSharper disable once UnusedMember.Global
         public static void ModuleManagerPostLoad() {
             _shaderBlacklist = new List<string>();
+            _fontList = new Dictionary<string, DecalFont>();
 
             var configs = GameDatabase.Instance.GetConfigs("CONFORMALDECALS");
 

Source/ConformalDecals/MaterialProperties/MaterialTextureProperty.cs

@@ -19,7 +19,10 @@ namespace ConformalDecals.MaterialProperties {
         [SerializeField] private Vector2 _textureOffset;
         [SerializeField] private Vector2 _textureScale = Vector2.one;
 
-        public Texture2D Texture => _texture;
+        public Texture2D Texture {
+            get => _texture;
+            set => _texture = value;
+        }
 
         public string TextureUrl {
             get => _textureUrl;

Source/ConformalDecals/ModuleConformalDecal.cs

@@ -246,8 +246,6 @@ namespace ConformalDecals {
 
             _boundsRenderer = decalProjectorTransform.GetComponent<MeshRenderer>();
 
-            UpdateMaterials();
-
             // handle tweakables
             if (HighLogic.LoadedSceneIsEditor) {
                 GameEvents.onEditorPartEvent.Add(OnEditorEvent);
@@ -360,7 +358,7 @@ namespace ConformalDecals {
             }
         }
 
-        protected void OnAttach() {
+        protected virtual void OnAttach() {
             if (part.parent == null) {
                 this.LogError("Attach function called but part has no parent!");
                 _isAttached = false;
@@ -383,7 +381,7 @@ namespace ConformalDecals {
             UpdateScale();
         }
 
-        protected void OnDetach() {
+        protected virtual void OnDetach() {
             _isAttached = false;
 
             // unhide model
@@ -456,7 +454,7 @@ namespace ConformalDecals {
             }
         }
 
-        protected void UpdateMaterials() {
+        protected virtual void UpdateMaterials() {
             materialProperties.UpdateMaterials();
             materialProperties.SetOpacity(opacity);
             materialProperties.SetCutoff(cutoff);
@@ -500,7 +498,7 @@ namespace ConformalDecals {
             }
         }
 
-        protected void UpdateTweakables() {
+        protected virtual void UpdateTweakables() {
             // setup tweakable fields
             var scaleField = Fields[nameof(scale)];
             var depthField = Fields[nameof(depth)];
@@ -514,7 +512,7 @@ namespace ConformalDecals {
             cutoffField.guiActiveEditor = cutoffAdjustable;
             wearField.guiActiveEditor = useBaseNormal;
 
-            var steps = 20;
+            var steps = 40;
 
             if (scaleAdjustable) {
                 var minValue = Mathf.Max(Mathf.Epsilon, scaleRange.x);

Source/ConformalDecals/ModuleConformalText.cs

@@ -0,0 +1,292 @@
+using ConformalDecals.MaterialProperties;
+using ConformalDecals.Text;
+using ConformalDecals.UI;
+using TMPro;
+using UnityEngine;
+
+namespace ConformalDecals {
+    public class ModuleConformalText : ModuleConformalDecal, ISerializationCallbackReceiver {
+        [KSPField(isPersistant = true)] public string text         = "Text";
+        [KSPField(isPersistant = true)] public Color  fillColor    = Color.black;
+        [KSPField(isPersistant = true)] public Color  outlineColor = Color.white;
+
+        [KSPField] public Vector2 lineSpacingRange = new Vector2(-50, 50);
+        [KSPField] public Vector2 charSpacingRange = new Vector2(-50, 50);
+
+        // serialization-only fields. do not use except in serialization functions
+        [KSPField(isPersistant = true)] public string fontName = "Calibri SDF";
+        [KSPField(isPersistant = true)] public int    style;
+        [KSPField(isPersistant = true)] public bool   vertical;
+        [KSPField(isPersistant = true)] public float  lineSpacing;
+        [KSPField(isPersistant = true)] public float  charSpacing;
+
+        // KSP TWEAKABLES
+
+        [KSPEvent(guiName = "#LOC_ConformalDecals_gui-set-text", guiActive = false, guiActiveEditor = true)]
+        public void SetText() {
+            if (_textEntryController == null) {
+                _textEntryController = TextEntryController.Create(text, _font, _style, lineSpacingRange, charSpacingRange, OnTextUpdate);
+            }
+            else {
+                _textEntryController.Close();
+            }
+        }
+
+        // FILL
+
+        [KSPField(guiName = "#LOC_ConformalDecals_gui-fill", groupName = "decal-fill", groupDisplayName = "#LOC_ConformalDecals_gui-group-fill",
+             guiActive = false, guiActiveEditor = true, isPersistant = true),
+         UI_Toggle()]
+        public bool fillEnabled = true;
+
+        [KSPEvent(guiName = "#LOC_ConformalDecals_gui-set-fill-color", groupName = "decal-fill", groupDisplayName = "#LOC_ConformalDecals_gui-group-fill",
+            guiActive = false, guiActiveEditor = true)]
+        public void SetFillColor() {
+            if (_fillColorPickerController == null) {
+                _fillColorPickerController = ColorPickerController.Create(fillColor, OnFillColorUpdate);
+            }
+            else {
+                _fillColorPickerController.Close();
+            }
+        }
+
+        // OUTLINE
+
+        [KSPField(guiName = "#LOC_ConformalDecals_gui-outline", groupName = "decal-outline", groupDisplayName = "#LOC_ConformalDecals_gui-group-outline",
+             guiActive = false, guiActiveEditor = true, isPersistant = true),
+         UI_Toggle()]
+        public bool outlineEnabled;
+
+        [KSPField(guiName = "#LOC_ConformalDecals_gui-outline-width", groupName = "decal-outline", groupDisplayName = "#LOC_ConformalDecals_gui-group-outline",
+             guiActive = false, guiActiveEditor = true, isPersistant = true, guiFormat = "F2"),
+         UI_FloatRange(stepIncrement = 0.05f)]
+        public float outlineWidth = 0.1f;
+
+        [KSPEvent(guiName = "#LOC_ConformalDecals_gui-set-outline-color", groupName = "decal-outline", groupDisplayName = "#LOC_ConformalDecals_gui-group-outline",
+            guiActive = false, guiActiveEditor = true)]
+        public void SetOutlineColor() {
+            if (_outlineColorPickerController == null) {
+                _outlineColorPickerController = ColorPickerController.Create(outlineColor, OnOutlineColorUpdate);
+            }
+            else {
+                _outlineColorPickerController.Close();
+            }
+        }
+
+        private DecalTextStyle _style;
+        private DecalFont      _font;
+
+        private TextEntryController   _textEntryController;
+        private ColorPickerController _fillColorPickerController;
+        private ColorPickerController _outlineColorPickerController;
+
+        private MaterialTextureProperty _decalTextureProperty;
+
+        private MaterialKeywordProperty _fillEnabledProperty;
+        private MaterialColorProperty   _fillColorProperty;
+
+        private MaterialKeywordProperty _outlineEnabledProperty;
+        private MaterialColorProperty   _outlineColorProperty;
+        private MaterialFloatProperty   _outlineWidthProperty;
+
+        private TextRenderJob _currentJob;
+        private DecalText     _currentText;
+
+        public override void OnLoad(ConfigNode node) {
+            base.OnLoad(node);
+            OnAfterDeserialize();
+
+            UpdateTextRecursive();
+        }
+
+        public override void OnSave(ConfigNode node) {
+            OnBeforeSerialize();
+            base.OnSave(node);
+        }
+
+        public override void OnStart(StartState state) {
+            base.OnStart(state);
+
+            UpdateTextRecursive();
+        }
+
+        public override void OnAwake() {
+            base.OnAwake();
+
+            _decalTextureProperty = materialProperties.AddOrGetTextureProperty("_Decal", true);
+
+            _fillEnabledProperty = materialProperties.AddOrGetProperty<MaterialKeywordProperty>("DECAL_FILL");
+            _fillColorProperty = materialProperties.AddOrGetProperty<MaterialColorProperty>("_DecalColor");
+
+            _outlineEnabledProperty = materialProperties.AddOrGetProperty<MaterialKeywordProperty>("DECAL_OUTLINE");
+            _outlineColorProperty = materialProperties.AddOrGetProperty<MaterialColorProperty>("_OutlineColor");
+            _outlineWidthProperty = materialProperties.AddOrGetProperty<MaterialFloatProperty>("_OutlineWidth");
+        }
+
+        public void OnTextUpdate(string newText, DecalFont newFont, DecalTextStyle newStyle) {
+            text = newText;
+            _font = newFont;
+            _style = newStyle;
+            UpdateTextRecursive();
+        }
+
+        public void OnFillColorUpdate(Color rgb, Util.ColorHSV hsv) {
+            fillColor = rgb;
+            UpdateMaterials();
+
+            foreach (var counterpart in part.symmetryCounterparts) {
+                var decal = counterpart.GetComponent<ModuleConformalText>();
+                decal.fillColor = fillColor;
+                decal.UpdateMaterials();
+            }
+        }
+
+        public void OnOutlineColorUpdate(Color rgb, Util.ColorHSV hsv) {
+            outlineColor = rgb;
+            UpdateMaterials();
+
+            foreach (var counterpart in part.symmetryCounterparts) {
+                var decal = counterpart.GetComponent<ModuleConformalText>();
+                decal.outlineColor = outlineColor;
+                decal.UpdateMaterials();
+            }
+        }
+
+        public void OnFillToggle(BaseField field, object obj) {
+            // fill and outline cant both be disabled
+            outlineEnabled = outlineEnabled || (!outlineEnabled && !fillEnabled);
+
+            UpdateTweakables();
+            UpdateMaterials();
+
+            foreach (var counterpart in part.symmetryCounterparts) {
+                var decal = counterpart.GetComponent<ModuleConformalText>();
+                decal.fillEnabled = fillEnabled;
+                decal.outlineEnabled = outlineEnabled;
+                decal.UpdateTweakables();
+                decal.UpdateMaterials();
+            }
+        }
+
+        public void OnOutlineToggle(BaseField field, object obj) {
+            // fill and outline cant both be disabled
+            fillEnabled = fillEnabled || (!fillEnabled && !outlineEnabled);
+
+            UpdateTweakables();
+            UpdateMaterials();
+
+            foreach (var counterpart in part.symmetryCounterparts) {
+                var decal = counterpart.GetComponent<ModuleConformalText>();
+                decal.fillEnabled = fillEnabled;
+                decal.outlineEnabled = outlineEnabled;
+                decal.UpdateTweakables();
+                decal.UpdateMaterials();
+            }
+        }
+
+        public void OnOutlineWidthUpdate(BaseField field, object obj) {
+            UpdateMaterials();
+
+            foreach (var counterpart in part.symmetryCounterparts) {
+                var decal = counterpart.GetComponent<ModuleConformalText>();
+                decal.outlineWidth = outlineWidth;
+                decal.UpdateMaterials();
+            }
+        }
+
+        public void OnBeforeSerialize() {
+            fontName = _font.Name;
+            style = (int) _style.FontStyle;
+            vertical = _style.Vertical;
+            lineSpacing = _style.LineSpacing;
+            charSpacing = _style.CharSpacing;
+        }
+
+        public void OnAfterDeserialize() {
+            _font = DecalConfig.GetFont(fontName);
+            _style = new DecalTextStyle((FontStyles) style, vertical, lineSpacing, charSpacing);
+        }
+
+        public override void OnDestroy() {
+            if (HighLogic.LoadedSceneIsGame && _currentText != null) TextRenderer.UnregisterText(_currentText);
+
+            base.OnDestroy();
+        }
+
+        protected override void OnDetach() {
+            // close all UIs
+            if (_textEntryController != null) _textEntryController.Close();
+            if (_fillColorPickerController != null) _fillColorPickerController.Close();
+            if (_outlineColorPickerController != null) _outlineColorPickerController.Close();
+
+            base.OnDetach();
+        }
+
+        private void UpdateTextRecursive() {
+            UpdateText();
+
+            foreach (var counterpart in part.symmetryCounterparts) {
+                var decal = counterpart.GetComponent<ModuleConformalText>();
+                decal.text = text;
+                decal._font = _font;
+                decal._style = _style;
+
+                decal._currentJob = _currentJob;
+                decal._currentText = _currentText;
+                decal.UpdateText();
+            }
+        }
+
+        private void UpdateText() {
+            // Render text
+            var newText = new DecalText(text, _font, _style);
+            var output = TextRenderer.UpdateTextNow(_currentText, newText);
+            _currentText = newText;
+
+            UpdateTexture(output);
+
+            // TODO: ASYNC RENDERING
+            // var newText = new DecalText(text, _font, _style);
+            // _currentJob = TextRenderer.UpdateText(_currentText, newText, UpdateTexture);
+            // _currentText = newText;
+        }
+
+        public void UpdateTexture(TextRenderOutput output) {
+            _decalTextureProperty.Texture = output.Texture;
+            _decalTextureProperty.SetTile(output.Window);
+
+            UpdateMaterials();
+            UpdateScale();
+        }
+
+        protected override void UpdateMaterials() {
+            _fillEnabledProperty.value = fillEnabled;
+            _fillColorProperty.color = fillColor;
+
+            _outlineEnabledProperty.value = outlineEnabled;
+            _outlineColorProperty.color = outlineColor;
+            _outlineWidthProperty.value = outlineWidth;
+
+            base.UpdateMaterials();
+        }
+
+        protected override void UpdateTweakables() {
+            var fillEnabledField = Fields[nameof(fillEnabled)];
+            var fillColorEvent = Events["SetFillColor"];
+
+            var outlineEnabledField = Fields[nameof(outlineEnabled)];
+            var outlineWidthField = Fields[nameof(outlineWidth)];
+            var outlineColorEvent = Events["SetOutlineColor"];
+
+            fillColorEvent.guiActiveEditor = fillEnabled;
+            outlineWidthField.guiActiveEditor = outlineEnabled;
+            outlineColorEvent.guiActiveEditor = outlineEnabled;
+
+            ((UI_Toggle) fillEnabledField.uiControlEditor).onFieldChanged = OnFillToggle;
+            ((UI_Toggle) outlineEnabledField.uiControlEditor).onFieldChanged = OnOutlineToggle;
+            ((UI_FloatRange) outlineWidthField.uiControlEditor).onFieldChanged = OnOutlineWidthUpdate;
+
+            base.UpdateTweakables();
+        }
+    }
+}

Source/ConformalDecals/Properties/AssemblyInfo.cs

@@ -5,7 +5,7 @@ using System.Runtime.InteropServices;
 // General Information about an assembly is controlled through the following
 // set of attributes. Change these attribute values to modify the information
 // associated with an assembly.
-[assembly: AssemblyTitle("Conformal Decals")]
+[assembly: AssemblyTitle("ConformalDecals")]
 [assembly: AssemblyDescription("")]
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Cineboxandrew")]

Source/ConformalDecals/Text/DecalFont.cs

@@ -0,0 +1,94 @@
+using System;
+using System.Collections.Generic;
+using ConformalDecals.Util;
+using TMPro;
+using UniLinq;
+
+namespace ConformalDecals.Text {
+    public class DecalFont : IEquatable<DecalFont> {
+        public string Title { get; }
+
+        public TMP_FontAsset FontAsset { get; }
+
+        public string Name => FontAsset.name;
+
+
+        public FontStyles FontStyle { get; }
+
+        public bool Bold => (FontStyle & FontStyles.Bold) != 0;
+
+        public bool Italic => (FontStyle & FontStyles.Italic) != 0;
+
+        public bool Underline => (FontStyle & FontStyles.Underline) != 0;
+
+        public bool SmallCaps => (FontStyle & FontStyles.SmallCaps) != 0;
+
+
+        public FontStyles FontStyleMask { get; }
+
+        public bool BoldMask => (FontStyleMask & FontStyles.Bold) != 0;
+
+        public bool ItalicMask => (FontStyleMask & FontStyles.Italic) != 0;
+
+        public bool UnderlineMask => (FontStyleMask & FontStyles.Underline) != 0;
+
+        public bool SmallCapsMask => (FontStyleMask & FontStyles.SmallCaps) != 0;
+
+
+        public DecalFont(ConfigNode node, IEnumerable<TMP_FontAsset> fontAssets) {
+            if (node == null) throw new ArgumentNullException(nameof(node));
+            if (fontAssets == null) throw new ArgumentNullException(nameof(fontAssets));
+
+            var name = ParseUtil.ParseString(node, "name");
+            FontAsset = fontAssets.First(o => o.name == name);
+            if (FontAsset == null) {
+                throw new FormatException($"Could not find font asset named {name}");
+            }
+
+            Title = ParseUtil.ParseString(node, "title", true, name);
+            FontStyle = (FontStyles) ParseUtil.ParseInt(node, "style", true);
+            FontStyleMask = (FontStyles) ParseUtil.ParseInt(node, "styleMask", true);
+        }
+
+
+        public void SetupSample(TMP_Text tmp) {
+            if (tmp == null) throw new ArgumentNullException(nameof(tmp));
+            if (FontAsset == null) throw new InvalidOperationException("DecalFont has not been initialized and Font is null.");
+
+            tmp.text = Title;
+            tmp.font = FontAsset;
+            tmp.fontStyle = FontStyle;
+        }
+
+        public bool Equals(DecalFont other) {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return Title == other.Title && Equals(FontAsset, other.FontAsset) && FontStyle == other.FontStyle && FontStyleMask == other.FontStyleMask;
+        }
+
+        public override bool Equals(object obj) {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((DecalFont) obj);
+        }
+
+        public override int GetHashCode() {
+            unchecked {
+                var hashCode = (Title != null ? Title.GetHashCode() : 0);
+                hashCode = (hashCode * 397) ^ (FontAsset != null ? FontAsset.GetHashCode() : 0);
+                hashCode = (hashCode * 397) ^ (int) FontStyle;
+                hashCode = (hashCode * 397) ^ (int) FontStyleMask;
+                return hashCode;
+            }
+        }
+
+        public static bool operator ==(DecalFont left, DecalFont right) {
+            return Equals(left, right);
+        }
+
+        public static bool operator !=(DecalFont left, DecalFont right) {
+            return !Equals(left, right);
+        }
+    }
+}

Source/ConformalDecals/Text/DecalText.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Text.RegularExpressions;
+
+namespace ConformalDecals.Text {
+    public class DecalText : IEquatable<DecalText> {
+        public string Text { get; }
+
+        public DecalFont Font { get; }
+
+        public DecalTextStyle Style { get; }
+
+        public string FormattedText {
+            get {
+                if (Style.Vertical) {
+                    return Regex.Replace(Text, @"(.)", "$1\n");
+                }
+                else {
+                    return Text;
+                }
+            }
+        }
+
+        public DecalText(string text, DecalFont font, DecalTextStyle style) {
+            if (font == null) throw new ArgumentNullException(nameof(font));
+            Text = text;
+            Font = font;
+            Style = style;
+        }
+
+        public bool Equals(DecalText other) {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return Text == other.Text && Equals(Font, other.Font) && Style.Equals(other.Style);
+        }
+
+        public override bool Equals(object obj) {
+            if (ReferenceEquals(null, obj)) return false;
+            if (ReferenceEquals(this, obj)) return true;
+            if (obj.GetType() != this.GetType()) return false;
+            return Equals((DecalText) obj);
+        }
+
+        public override int GetHashCode() {
+            unchecked {
+                var hashCode = (Text != null ? Text.GetHashCode() : 0);
+                hashCode = (hashCode * 397) ^ (Font != null ? Font.GetHashCode() : 0);
+                hashCode = (hashCode * 397) ^ Style.GetHashCode();
+                return hashCode;
+            }
+        }
+
+        public static bool operator ==(DecalText left, DecalText right) {
+            return Equals(left, right);
+        }
+
+        public static bool operator !=(DecalText left, DecalText right) {
+            return !Equals(left, right);
+        }
+    }
+}

Source/ConformalDecals/Text/DecalTextStyle.cs

@@ -0,0 +1,100 @@
+using System;
+using TMPro;
+using UnityEngine;
+// ReSharper disable NonReadonlyMemberInGetHashCode
+
+namespace ConformalDecals.Text {
+    public struct DecalTextStyle : IEquatable<DecalTextStyle> {
+        private FontStyles _fontStyle;
+        private bool _vertical;
+        private float _lineSpacing;
+        private float _charSpacing;
+
+        public FontStyles FontStyle {
+            get => _fontStyle;
+            set => _fontStyle = value;
+        }
+
+        public bool Bold {
+            get => (FontStyle & FontStyles.Bold) != 0;
+            set {
+                if (value) FontStyle |= FontStyles.Bold;
+                else FontStyle &= ~FontStyles.Bold;
+            }
+        }
+
+        public bool Italic {
+            get => (FontStyle & FontStyles.Italic) != 0;
+            set {
+                if (value) FontStyle |= FontStyles.Italic;
+                else FontStyle &= ~FontStyles.Italic;
+            }
+        }
+
+        public bool Underline {
+            get => (FontStyle & FontStyles.Underline) != 0;
+            set {
+                if (value) FontStyle |= FontStyles.Underline;
+                else FontStyle &= ~FontStyles.Underline;
+            }
+        }
+
+        public bool SmallCaps {
+            get => (FontStyle & FontStyles.SmallCaps) != 0;
+            set {
+                if (value) FontStyle |= FontStyles.SmallCaps;
+                else FontStyle &= ~FontStyles.SmallCaps;
+            }
+        }
+
+        public bool Vertical {
+            get => _vertical;
+            set => _vertical = value;
+        }
+
+        public float LineSpacing {
+            get => _lineSpacing;
+            set => _lineSpacing = value;
+        }
+
+        public float CharSpacing {
+            get => _charSpacing;
+            set => _charSpacing = value;
+        }
+        
+        public DecalTextStyle(FontStyles fontStyle, bool vertical, float lineSpacing, float charSpacing) {
+            _fontStyle = fontStyle;
+            _vertical = vertical;
+            _lineSpacing = lineSpacing;
+            _charSpacing = charSpacing;
+        }
+
+        public bool Equals(DecalTextStyle other) {
+            return FontStyle == other.FontStyle && Vertical == other.Vertical && 
+                   Mathf.Approximately(LineSpacing, other.LineSpacing) &&
+                   Mathf.Approximately(CharSpacing, other.CharSpacing);
+        }
+
+        public override bool Equals(object obj) {
+            return obj is DecalTextStyle other && Equals(other);
+        }
+
+        public override int GetHashCode() {
+            unchecked {
+                var hashCode = (int) FontStyle;
+                hashCode = (hashCode * 397) ^ Vertical.GetHashCode();
+                hashCode = (hashCode * 397) ^ LineSpacing.GetHashCode();
+                hashCode = (hashCode * 397) ^ CharSpacing.GetHashCode();
+                return hashCode;
+            }
+        }
+
+        public static bool operator ==(DecalTextStyle left, DecalTextStyle right) {
+            return left.Equals(right);
+        }
+
+        public static bool operator !=(DecalTextStyle left, DecalTextStyle right) {
+            return !left.Equals(right);
+        }
+    }
+}

Source/ConformalDecals/Text/FontLoader.cs

@@ -0,0 +1,36 @@
+using System.IO;
+using System.Collections;
+using System.Collections.Generic;
+using TMPro;
+using UniLinq;
+using UnityEngine;
+
+namespace ConformalDecals.Text {
+    [DatabaseLoaderAttrib(new[] {"kspfont"})]
+    public class FontLoader : DatabaseLoader<GameDatabase.TextureInfo> {
+        private const  string        FallbackName = "NotoSans-Regular SDF";
+        private static TMP_FontAsset _fallbackFont;
+
+        public override IEnumerator Load(UrlDir.UrlFile urlFile, FileInfo fileInfo) {
+            if (_fallbackFont == null) {
+                _fallbackFont = Resources.FindObjectsOfTypeAll<TMP_FontAsset>().First(o => o.name == FallbackName);
+                if (_fallbackFont == null) Debug.LogError($"Could not find fallback font '{FallbackName}'");
+            }
+
+            Debug.Log($"[ConformalDecals] '{urlFile.fullPath}'");
+            var bundle = AssetBundle.LoadFromFile(urlFile.fullPath);
+            if (!bundle) {
+                Debug.Log($"[ConformalDecals] could not load font asset {urlFile.fullPath}");
+            }
+            else {
+                var loadedFonts = bundle.LoadAllAssets<TMP_FontAsset>();
+                foreach (var font in loadedFonts) {
+                    Debug.Log($"[ConformalDecals] adding font {font.name}");
+                    font.fallbackFontAssets.Add(_fallbackFont);
+                }
+            }
+
+            yield break;
+        }
+    }
+}

Source/ConformalDecals/Text/TextRenderJob.cs

@@ -0,0 +1,35 @@
+using System;
+using UnityEngine.Events;
+
+namespace ConformalDecals.Text {
+    public class TextRenderJob {
+        public DecalText OldText { get; }
+        public DecalText NewText { get; }
+        public bool Needed { get; private set; }
+        public bool IsStarted { get; private set; }
+        public bool IsDone { get; private set; }
+
+        public readonly TextRenderer.TextRenderEvent onRenderFinished = new TextRenderer.TextRenderEvent();
+
+        public TextRenderJob(DecalText oldText, DecalText newText, UnityAction<TextRenderOutput> renderFinishedCallback) {
+            OldText = oldText;
+            NewText = newText ?? throw new ArgumentNullException(nameof(newText));
+            Needed = true;
+
+            if (renderFinishedCallback != null) onRenderFinished.AddListener(renderFinishedCallback);
+        }
+
+        public void Cancel() {
+            Needed = false;
+        }
+
+        public void Start() {
+            IsStarted = true;
+        }
+
+        public void Finish(TextRenderOutput output) {
+            IsDone = true;
+            onRenderFinished.Invoke(output);
+        }
+    }
+}

Source/ConformalDecals/Text/TextRenderOutput.cs

@@ -0,0 +1,16 @@
+using UnityEngine;
+
+namespace ConformalDecals.Text {
+    public class TextRenderOutput {
+        public Texture2D Texture { get; private set; }
+
+        public Rect Window { get; private set; }
+        
+        public int UserCount { get; set; }
+
+        public TextRenderOutput(Texture2D texture, Rect window) {
+            Texture = texture;
+            Window = window;
+        }
+    }
+}

Source/ConformalDecals/Text/TextRenderer.cs

@@ -0,0 +1,273 @@
+using System;
+using System.Collections.Generic;
+using TMPro;
+using UnityEngine;
+using UnityEngine.Events;
+
+namespace ConformalDecals.Text {
+    [KSPAddon(KSPAddon.Startup.Instantly, true)]
+    public class TextRenderer : MonoBehaviour {
+        public const TextureFormat       TextTextureFormat       = TextureFormat.RG16;
+        public const RenderTextureFormat TextRenderTextureFormat = RenderTextureFormat.R8;
+
+        public static TextRenderer Instance {
+            get {
+                if (!_instance._isSetup) {
+                    _instance.Setup();
+                }
+
+                return _instance;
+            }
+        }
+
+        [Serializable]
+        public class TextRenderEvent : UnityEvent<TextRenderOutput> { }
+
+        private const string ShaderName     = "ConformalDecals/Text Blit";
+        private const int    MaxTextureSize = 4096;
+        private const float  FontSize       = 100;
+        private const float  PixelDensity   = 5;
+
+        private static TextRenderer _instance;
+
+        private bool        _isSetup;
+        private TextMeshPro _tmp;
+        private Shader      _blitShader;
+
+        private static readonly Dictionary<DecalText, TextRenderOutput> RenderCache = new Dictionary<DecalText, TextRenderOutput>();
+        private static readonly Queue<TextRenderJob>                    RenderJobs  = new Queue<TextRenderJob>();
+
+        // Update text using the job queue
+        public static TextRenderJob UpdateText(DecalText oldText, DecalText newText, UnityAction<TextRenderOutput> renderFinishedCallback) {
+            if (newText == null) throw new ArgumentNullException(nameof(newText));
+
+            var job = new TextRenderJob(oldText, newText, renderFinishedCallback);
+            RenderJobs.Enqueue(job);
+            return job;
+        }
+
+        // Update text immediately without using job queue
+        public static TextRenderOutput UpdateTextNow(DecalText oldText, DecalText newText) {
+            if (newText == null) throw new ArgumentNullException(nameof(newText));
+
+            return Instance.RunJob(new TextRenderJob(oldText, newText, null), out _);
+        }
+
+        // Unregister a user of a piece of text
+        public static void UnregisterText(DecalText text) {
+            Debug.Log($"[ConformalDecals] Unregistering text '{text.Text}'");
+            if (RenderCache.TryGetValue(text, out var renderedText)) {
+                renderedText.UserCount--;
+                if (renderedText.UserCount <= 0) {
+                    RenderCache.Remove(text);
+                    Destroy(renderedText.Texture);
+                }
+            }
+        }
+
+        private void Start() {
+            if (_instance != null) {
+                Debug.Log("[ConformalDecals] Duplicate TextRenderer created???");
+            }
+
+            Debug.Log("[ConformalDecals] Creating TextRenderer Object");
+            _instance = this;
+            DontDestroyOnLoad(gameObject);
+        }
+
+        private void Setup() {
+            if (_isSetup) return;
+
+            Debug.Log("[ConformalDecals] Setting Up TextRenderer Object");
+
+            _tmp = gameObject.AddComponent<TextMeshPro>();
+            _tmp.renderer.enabled = false; // dont automatically render
+
+            _blitShader = Shabby.Shabby.FindShader(ShaderName);
+            if (_blitShader == null) Debug.LogError($"[ConformalDecals] could not find text blit shader named '{ShaderName}'");
+
+            _isSetup = true;
+        }
+
+        // Run a text render job
+        private TextRenderOutput RunJob(TextRenderJob job, out bool renderNeeded) {
+            if (!job.Needed) {
+                renderNeeded = false;
+                return null;
+            }
+
+            Debug.Log($"[ConformalDecals] Starting Text Rendering Job. queue depth = {RenderJobs.Count}, cache size = {RenderCache.Count}");
+            foreach (var cacheitem in RenderCache) {
+                Debug.Log($"[ConformalDecals] Cache item: '{cacheitem.Key.Text}' with {cacheitem.Value.UserCount} users");
+            }
+            job.Start();
+
+            Texture2D texture = null;
+            if (job.OldText != null && RenderCache.TryGetValue(job.OldText, out var oldRender)) {
+                // old output still exists
+
+                oldRender.UserCount--;
+
+                if (oldRender.UserCount <= 0) {
+                    // this is the only usage of this output, so we are free to re-render into the texture
+                    Debug.Log("Render output is not shared with other users, so reusing texture and removing cache slot");
+
+                    texture = oldRender.Texture;
+                    RenderCache.Remove(job.OldText);
+                }
+                else {
+                    // other things are using this render output, so decriment usercount, and we'll make a new entry instead
+                    Debug.Log("Render output is shared with other users, so making new output");
+                }
+            }
+
+            // now that all old references are handled, begin rendering the new output
+
+            if (RenderCache.TryGetValue(job.NewText, out var renderOutput)) {
+                renderNeeded = false;
+            }
+            else {
+                renderNeeded = true;
+
+                renderOutput = RenderText(job.NewText, texture);
+                RenderCache.Add(job.NewText, renderOutput);
+            }
+
+            renderOutput.UserCount++;
+            
+            job.Finish(renderOutput);
+            return renderOutput;
+        }
+
+        // Render a piece of text to a given texture
+        public TextRenderOutput RenderText(DecalText text, Texture2D texture) {
+            if (text == null) throw new ArgumentNullException(nameof(text));
+            if (_tmp == null) throw new InvalidOperationException("TextMeshPro object not yet created.");
+            
+            // SETUP TMP OBJECT FOR RENDERING
+            _tmp.text = text.FormattedText;
+            _tmp.font = text.Font.FontAsset;
+            _tmp.fontStyle = text.Style.FontStyle | text.Font.FontStyle;
+            _tmp.lineSpacing = text.Style.LineSpacing;
+            _tmp.characterSpacing = text.Style.CharSpacing;
+
+            _tmp.extraPadding = true;
+            _tmp.enableKerning = true;
+            _tmp.enableWordWrapping = false;
+            _tmp.overflowMode = TextOverflowModes.Overflow;
+            _tmp.alignment = TextAlignmentOptions.Center;
+            _tmp.fontSize = FontSize;
+
+            // GENERATE MESH
+            _tmp.ClearMesh(false);
+            _tmp.ForceMeshUpdate();
+
+            var meshFilters = gameObject.GetComponentsInChildren<MeshFilter>();
+            var meshes = new Mesh[meshFilters.Length];
+            var materials = new Material[meshFilters.Length];
+
+            var bounds = new Bounds();
+
+            // SETUP MATERIALS AND BOUNDS
+            for (int i = 0; i < meshFilters.Length; i++) {
+                var renderer = meshFilters[i].gameObject.GetComponent<MeshRenderer>();
+                
+                meshes[i] = meshFilters[i].mesh;
+                if (i == 0) meshes[i] = _tmp.mesh;
+
+                materials[i] = Instantiate(renderer.material);
+                materials[i].shader = _blitShader;
+                
+                if (renderer == null) throw new FormatException($"Object {meshFilters[i].gameObject.name} has filter but no renderer");
+                if (meshes[i] == null) throw new FormatException($"Object {meshFilters[i].gameObject.name} has a null mesh");
+
+                if (i == 0) {
+                    bounds = meshes[i].bounds;
+                }
+                else {
+                    bounds.Encapsulate(meshes[i].bounds);
+                }
+            }
+
+            // CALCULATE SIZES
+            var size = bounds.size * PixelDensity;
+            var textureSize = new Vector2Int {
+                x = Mathf.NextPowerOfTwo((int) size.x),
+                y = Mathf.NextPowerOfTwo((int) size.y)
+            };
+
+            if (textureSize.x == 0 || textureSize.y == 0) {
+                Debug.LogWarning("[ConformalDecals] No text present or error in texture size calculation. Aborting.");
+                return new TextRenderOutput(Texture2D.blackTexture, Rect.zero);
+            }
+
+            // make sure texture isnt too big, scale it down if it is
+            // this is just so you dont crash the game by pasting in the entire script of The Bee Movie
+            if (textureSize.x > MaxTextureSize) {
+                textureSize.y /= textureSize.x / MaxTextureSize;
+                textureSize.x = MaxTextureSize;
+            }
+
+            if (textureSize.y > MaxTextureSize) {
+                textureSize.x /= textureSize.y / MaxTextureSize;
+                textureSize.y = MaxTextureSize;
+            }
+
+            // scale up everything to fit the texture for maximum usage
+            float sizeRatio = Mathf.Min(textureSize.x / size.x, textureSize.y / size.y);
+
+            // calculate where in the texture the used area actually is
+            var window = new Rect {
+                size = size * sizeRatio,
+                center = (Vector2) textureSize / 2
+            };
+
+            // SETUP TEXTURE
+            if (texture == null) {
+                texture = new Texture2D(textureSize.x, textureSize.y, TextTextureFormat, true);
+            }
+            else if (texture.width != textureSize.x || texture.height != textureSize.y || texture.format != TextTextureFormat) {
+                texture.Resize(textureSize.x, textureSize.y, TextTextureFormat, true);
+            }
+
+            // GENERATE PROJECTION MATRIX
+            var halfSize = (Vector2) textureSize / PixelDensity / 2 / sizeRatio;
+            var matrix = Matrix4x4.Ortho(bounds.center.x - halfSize.x, bounds.center.x + halfSize.x,
+                bounds.center.y - halfSize.y, bounds.center.y + halfSize.y, -1, 1);
+
+            // GET RENDERTEX
+            var renderTex = RenderTexture.GetTemporary(textureSize.x, textureSize.y, 0, TextRenderTextureFormat, RenderTextureReadWrite.Linear, 1);
+            renderTex.autoGenerateMips = false;
+
+            // RENDER
+            Graphics.SetRenderTarget(renderTex);
+            GL.PushMatrix();
+            GL.LoadProjectionMatrix(matrix);
+            GL.Clear(false, true, Color.black);
+
+            for (var i = 0; i < meshes.Length; i++) {
+                if (meshes[i].vertexCount >= 3) {
+                    materials[i].SetPass(0);
+                    Graphics.DrawMeshNow(meshes[i], Matrix4x4.identity);
+                }
+            }
+
+            GL.PopMatrix();
+
+            // COPY TEXTURE BACK INTO RAM
+            RenderTexture.active = renderTex;
+            texture.ReadPixels(new Rect(0, 0, textureSize.x, textureSize.y), 0, 0, true);
+            texture.Apply();
+
+            // RELEASE RENDERTEX
+            RenderTexture.ReleaseTemporary(renderTex);
+
+            // CLEAR SUBMESHES
+            for (int i = 0; i < transform.childCount; i++) {
+                Destroy(transform.GetChild(i).gameObject);
+            }
+
+            return new TextRenderOutput(texture, window);
+        }
+    }
+}

Source/ConformalDecals/UI/BoxSlider.cs

@@ -0,0 +1,176 @@
+using System;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    [AddComponentMenu("UI/BoxSlider", 35)]
+    [RequireComponent(typeof(RectTransform))]
+    public class BoxSlider : Selectable, IDragHandler, IInitializePotentialDragHandler, ICanvasElement {
+        [Serializable]
+        public class BoxSliderEvent : UnityEvent<Vector2> { }
+
+        [SerializeField] private RectTransform _handleRect;
+        [SerializeField] private Vector2 _value = Vector2.zero;
+
+        public RectTransform HandleRect {
+            get => _handleRect;
+            set {
+                if (value == null) throw new ArgumentNullException(nameof(value));
+                if (value != _handleRect) {
+                    _handleRect = value;
+                    UpdateCachedReferences();
+                    UpdateVisuals();
+                }
+            }
+        }
+
+        public Vector2 Value {
+            get => _value;
+            set {
+                _value = value;
+                _onValueChanged.Invoke(value);
+                UpdateVisuals();
+            }
+        }
+
+        [Space(6)]
+
+        // Allow for delegate-based subscriptions for faster events than 'eventReceiver', and allowing for multiple receivers.
+        [SerializeField]
+        private BoxSliderEvent _onValueChanged = new BoxSliderEvent();
+
+        public BoxSliderEvent OnValueChanged {
+            get => _onValueChanged;
+            set => _onValueChanged = value;
+        }
+
+        // Private fields
+
+        private Transform     _handleTransform;
+        private RectTransform _handleContainerRect;
+
+        // The offset from handle position to mouse down position
+        private Vector2 _offset = Vector2.zero;
+
+#if UNITY_EDITOR
+        protected override void OnValidate() {
+            base.OnValidate();
+
+            //Onvalidate is called before OnEnabled. We need to make sure not to touch any other objects before OnEnable is run.
+            if (IsActive()) {
+                UpdateCachedReferences();
+                // Update rects since other things might affect them even if value didn't change.
+                UpdateVisuals();
+            }
+
+#if UNITY_2018_3_OR_NEWER
+
+            if (!UnityEditor.PrefabUtility.IsPartOfPrefabAsset(this) && !Application.isPlaying)
+                CanvasUpdateRegistry.RegisterCanvasElementForLayoutRebuild(this);
+
+#else
+            var prefabType = UnityEditor.PrefabUtility.GetPrefabType(this);
+			if (prefabType != UnityEditor.PrefabType.Prefab && !Application.isPlaying)
+				CanvasUpdateRegistry.RegisterCanvasElementForLayoutRebuild(this);
+#endif
+        }
+#endif // if UNITY_EDITOR
+
+        public virtual void Rebuild(CanvasUpdate executing) {
+#if UNITY_EDITOR
+            if (executing == CanvasUpdate.Prelayout)
+                OnValueChanged.Invoke(Value);
+#endif
+        }
+
+        public void LayoutComplete() { }
+
+        public void GraphicUpdateComplete() { }
+
+        protected override void OnEnable() {
+            base.OnEnable();
+            UpdateCachedReferences();
+            // Update rects since they need to be initialized correctly.
+            UpdateVisuals();
+        }
+
+        private void UpdateCachedReferences() {
+            if (_handleRect) {
+                _handleTransform = _handleRect.transform;
+                if (_handleTransform.parent != null)
+                    _handleContainerRect = _handleTransform.parent.GetComponent<RectTransform>();
+            }
+            else {
+                _handleContainerRect = null;
+            }
+        }
+
+        protected override void OnRectTransformDimensionsChange() {
+            base.OnRectTransformDimensionsChange();
+            UpdateVisuals();
+        }
+
+        // Force-update the slider. Useful if you've changed the properties and want it to update visually.
+        private void UpdateVisuals() {
+            if (_handleContainerRect != null) {
+                _handleRect.anchorMin = _value;
+                _handleRect.anchorMax = _value;
+            }
+        }
+
+        // Update the slider's position based on the mouse.
+        private void UpdateDrag(PointerEventData eventData, Camera cam) {
+            var clickRect = _handleContainerRect;
+            if (clickRect != null && clickRect.rect.size[0] > 0) {
+                if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(clickRect, eventData.position, cam, out var localCursor))
+                    return;
+
+                var rect = clickRect.rect;
+                localCursor -= rect.position;
+
+                Vector2 newVal;
+                newVal.x = Mathf.Clamp01((localCursor - _offset).x / rect.size.x);
+                newVal.y = Mathf.Clamp01((localCursor - _offset).y / rect.size.y);
+
+                Value = newVal;
+            }
+        }
+
+        private bool MayDrag(PointerEventData eventData) {
+            return IsActive() && IsInteractable() && eventData.button == PointerEventData.InputButton.Left;
+        }
+
+        public override void OnPointerDown(PointerEventData eventData) {
+            if (!MayDrag(eventData))
+                return;
+
+            base.OnPointerDown(eventData);
+
+            _offset = Vector2.zero;
+            if (_handleContainerRect != null && RectTransformUtility.RectangleContainsScreenPoint(_handleRect, eventData.position, eventData.enterEventCamera)) {
+                Vector2 localMousePos;
+                if (RectTransformUtility.ScreenPointToLocalPointInRectangle(_handleRect, eventData.position, eventData.pressEventCamera, out localMousePos))
+                    _offset = localMousePos;
+
+                _offset.y = -_offset.y;
+            }
+            else {
+                // Outside the slider handle - jump to this point instead
+                UpdateDrag(eventData, eventData.pressEventCamera);
+            }
+        }
+
+        public virtual void OnDrag(PointerEventData eventData) {
+            if (!MayDrag(eventData))
+                return;
+
+            UpdateDrag(eventData, eventData.pressEventCamera);
+        }
+        
+        public virtual void OnInitializePotentialDrag(PointerEventData eventData) {
+            eventData.useDragThreshold = false;
+        }
+    }
+}

Source/ConformalDecals/UI/ColorBoxSlider.cs

@@ -0,0 +1,63 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class ColorBoxSlider : MonoBehaviour {
+        [SerializeField] public ColorPickerController.SVUpdateEvent onValueChanged = new ColorPickerController.SVUpdateEvent();
+
+        [SerializeField] private Vector2    _value;
+
+        [SerializeField] private BoxSlider _slider;
+        [SerializeField] private Image     _image;
+        
+        private bool _ignoreUpdates;
+
+        public Vector2 Value {
+            get => _value;
+            set {
+                _value.x = Mathf.Clamp01(value.x);
+                _value.y = Mathf.Clamp01(value.y);
+                UpdateSlider();
+                UpdateChannels();
+            }
+        }
+
+        public void OnColorUpdate(Color rgb, Util.ColorHSV hsv) {
+            if (_ignoreUpdates) return;
+
+            _image.material.SetColor(PropertyIDs._Color, (Vector4) hsv);
+
+            _value.x = hsv.s;
+            _value.y = hsv.v;
+            UpdateSlider();
+        }
+        
+        public void OnSliderUpdate(Vector2 value) {
+            if (_ignoreUpdates) return;
+            
+            _value = value;
+            UpdateChannels();
+        }
+
+        private void Awake() {
+            var boxSlider = gameObject.GetComponentInChildren<BoxSlider>();
+            boxSlider.OnValueChanged.AddListener(OnSliderUpdate);
+        }
+
+        private void UpdateChannels() {
+            _ignoreUpdates = true;
+            
+            onValueChanged.Invoke(_value);
+            
+            _ignoreUpdates = false;
+        }
+        
+        private void UpdateSlider() {
+            _ignoreUpdates = true;
+            
+            _slider.Value = _value;
+            
+            _ignoreUpdates = false;
+        }
+    }
+}

Source/ConformalDecals/UI/ColorChannelSlider.cs

@@ -0,0 +1,79 @@
+using TMPro;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class ColorChannelSlider : MonoBehaviour {
+        [SerializeField] public ColorPickerController.ChannelUpdateEvent onChannelChanged = new ColorPickerController.ChannelUpdateEvent();
+
+        [SerializeField] private float _value;
+        [SerializeField] private int   _channel;
+        [SerializeField] private bool  _hsv;
+
+        [SerializeField] private Selectable _textBox;
+        [SerializeField] private Slider     _slider;
+        [SerializeField] private Image      _image;
+
+        private bool _ignoreUpdates;
+
+        public float Value {
+            get => _value;
+            set {
+                _value = Mathf.Clamp01(value);
+                UpdateSlider();
+                UpdateTextbox();
+                UpdateChannel();
+            }
+        }
+        
+        public void OnColorUpdate(Color rgb, Util.ColorHSV hsv) {
+            if (_ignoreUpdates) return;
+
+            _image.material.SetColor(PropertyIDs._Color, _hsv ? (Color) (Vector4) hsv : rgb);
+            
+            _value = _hsv ? hsv[_channel] : rgb[_channel];
+            UpdateSlider();
+            UpdateTextbox();
+        }
+        
+        public void OnTextBoxUpdate(string text) {
+            if (_ignoreUpdates) return;
+
+            if (byte.TryParse(text, out byte byteValue)) {
+                _value = (float) byteValue / 255;
+                UpdateSlider();
+                UpdateChannel();
+            }
+            else {
+                // value is invalid, reset value
+                UpdateTextbox();
+            }
+        }
+
+        public void OnSliderUpdate(float value) {
+            if (_ignoreUpdates) return;
+
+            _value = value;
+            UpdateTextbox();
+            UpdateChannel();
+        }
+
+        private void UpdateChannel() {
+            onChannelChanged.Invoke(_value, _channel, _hsv);
+        }
+
+        private void UpdateSlider() {
+            _ignoreUpdates = true;
+            _slider.value = _value;
+            _ignoreUpdates = false;
+        }
+
+        private void UpdateTextbox() {
+            if (_textBox == null) return;
+
+            _ignoreUpdates = true;
+            ((TMP_InputField) _textBox).text = ((byte) (255 * _value)).ToString();
+            _ignoreUpdates = false;
+        }
+    }
+}

Source/ConformalDecals/UI/ColorPickerController.cs

@@ -0,0 +1,117 @@
+using System;
+using ConformalDecals.Util;
+using TMPro;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class ColorPickerController : MonoBehaviour {
+        [Serializable]
+        public class ColorUpdateEvent : UnityEvent<Color, Util.ColorHSV> { }
+
+        [Serializable]
+        public class ChannelUpdateEvent : UnityEvent<float, int, bool> { }
+
+        [Serializable]
+        public class SVUpdateEvent : UnityEvent<Vector2> { }
+
+        [SerializeField] public ColorUpdateEvent onColorChanged = new ColorUpdateEvent();
+
+        [SerializeField] private Color      _value;
+        [SerializeField] private Image      _previewImage;
+        [SerializeField] private Selectable _hexTextBox;
+
+        private bool _ignoreUpdate;
+
+        public Color RGB {
+            get => _value;
+            set {
+                _value = value;
+                OnColorUpdate();
+            }
+        }
+
+        public Util.ColorHSV HSV {
+            get => Util.ColorHSV.RGB2HSV(_value);
+            set {
+                _value = Util.ColorHSV.HSV2RGB(value);
+                OnColorUpdate();
+            }
+        }
+
+
+        public static ColorPickerController Create(Color rgb, UnityAction<Color, Util.ColorHSV> colorUpdateCallback) {
+            var menu = Instantiate(UILoader.ColorPickerPrefab, MainCanvasUtil.MainCanvas.transform, true);
+            menu.AddComponent<DragPanel>();
+            MenuNavigation.SpawnMenuNavigation(menu, Navigation.Mode.Automatic, true);
+
+            var controller = menu.GetComponent<ColorPickerController>();
+            controller.RGB = rgb;
+            controller.onColorChanged.AddListener(colorUpdateCallback);
+            return controller;
+        }
+
+        public void Close() {
+            Destroy(gameObject);
+        }
+
+        public void OnChannelUpdate(float value, int channel, bool hsv) {
+            if (hsv) {
+                var newHSV = HSV;
+                newHSV[channel] = value;
+                HSV = newHSV;
+            }
+            else {
+                var newRGB = RGB;
+                newRGB[channel] = value;
+                RGB = newRGB;
+            }
+        }
+
+        public void OnSVUpdate(Vector2 sv) {
+            var newHSV = HSV;
+            newHSV.s = sv.x;
+            newHSV.v = sv.y;
+            HSV = newHSV;
+        }
+
+        public void OnColorUpdate() {
+            onColorChanged.Invoke(RGB, HSV);
+            _previewImage.material.SetColor(PropertyIDs._Color, RGB);
+            UpdateHexColor();
+        }
+
+        public void OnHexColorUpdate(string text) {
+            if (_ignoreUpdate) return;
+
+            if (ParseUtil.TryParseHexColor(text, out var newRGB)) {
+                RGB = newRGB;
+                OnColorUpdate();
+            }
+            else {
+                UpdateHexColor();
+            }
+        }
+
+        private void Awake() {
+            foreach (var slider in gameObject.GetComponentsInChildren<ColorChannelSlider>()) {
+                slider.onChannelChanged.AddListener(OnChannelUpdate);
+                onColorChanged.AddListener(slider.OnColorUpdate);
+            }
+
+            foreach (var box in gameObject.GetComponentsInChildren<ColorBoxSlider>()) {
+                box.onValueChanged.AddListener(OnSVUpdate);
+                onColorChanged.AddListener(box.OnColorUpdate);
+            }
+        }
+
+        private void UpdateHexColor() {
+            _ignoreUpdate = true;
+            var byteColor = (Color32) RGB;
+            var hexColor = $"{byteColor.r:x2}{byteColor.g:x2}{byteColor.b:x2}";
+            ((TMP_InputField) _hexTextBox).text = hexColor;
+            _ignoreUpdate = false;
+        }
+    }
+}

Source/ConformalDecals/UI/FontMenuController.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using ConformalDecals.Text;
+using UniLinq;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class FontMenuController : MonoBehaviour {
+        [Serializable]
+        public class FontUpdateEvent : UnityEvent<DecalFont> { }
+        
+        [SerializeField] public FontUpdateEvent onFontChanged = new FontUpdateEvent();
+
+        [SerializeField] private GameObject _menuItem;
+        [SerializeField] private GameObject _menuList;
+
+        private DecalFont _currentFont;
+
+        public static FontMenuController Create(IEnumerable<DecalFont> fonts, DecalFont currentFont, UnityAction<DecalFont> fontUpdateCallback) {
+            var menu = Instantiate(UILoader.FontMenuPrefab, MainCanvasUtil.MainCanvas.transform, true);
+            menu.AddComponent<DragPanel>();
+            MenuNavigation.SpawnMenuNavigation(menu, Navigation.Mode.Automatic, true);
+
+            var controller = menu.GetComponent<FontMenuController>();
+            controller._currentFont = currentFont;
+            controller.onFontChanged.AddListener(fontUpdateCallback);
+
+            controller.Populate(fonts);
+            return controller;
+        }
+
+        public void Close() {
+            Destroy(gameObject);
+        }
+
+        public void OnFontSelected(DecalFont font) {
+            _currentFont = font ?? throw new ArgumentNullException(nameof(font));
+            onFontChanged.Invoke(_currentFont);
+        }
+
+        public void Populate(IEnumerable<DecalFont> fonts) {
+            if (fonts == null) throw new ArgumentNullException(nameof(fonts));
+
+            Toggle active = null;
+
+            foreach (var font in fonts.OrderBy(x => x.Title)) {
+                Debug.Log(font.Title);
+                var listItem = GameObject.Instantiate(_menuItem, _menuList.transform);
+                listItem.name = font.Title;
+                listItem.SetActive(true);
+
+                var fontItem = listItem.AddComponent<FontMenuItem>();
+                fontItem.Font = font;
+                fontItem.fontSelectionCallback = OnFontSelected;
+
+                if (font == _currentFont) active = fontItem.toggle;
+            }
+
+            if (active != null) active.isOn = true;
+        }
+    }
+}

Source/ConformalDecals/UI/FontMenuItem.cs

@@ -0,0 +1,36 @@
+using System;
+using ConformalDecals.Text;
+using TMPro;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class FontMenuItem : MonoBehaviour {
+        public DecalFont Font {
+            get => _font;
+            set {
+                _font = value;
+                _font.SetupSample(_label);
+            }
+        }
+
+        public delegate void FontSelectionReceiver(DecalFont font);
+
+        public FontSelectionReceiver fontSelectionCallback;
+        public Toggle                toggle;
+
+        private DecalFont _font;
+        private TMP_Text  _label;
+
+        private void Awake() {
+            _label = gameObject.GetComponentInChildren<TextMeshProUGUI>();
+            toggle = gameObject.GetComponent<Toggle>();
+            toggle.isOn = false;
+            toggle.onValueChanged.AddListener(delegate { OnToggle(toggle); });
+        }
+
+        public void OnToggle(Toggle change) {
+            if (change.isOn) fontSelectionCallback?.Invoke(_font);
+        }
+    }
+}

Source/ConformalDecals/UI/TextEntryController.cs

@@ -0,0 +1,263 @@
+using System;
+using ConformalDecals.Text;
+using TMPro;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    public class TextEntryController : MonoBehaviour {
+        [Serializable]
+        public class TextUpdateEvent : UnityEvent<string, DecalFont, DecalTextStyle> { }
+
+        [SerializeField] public TextUpdateEvent onValueChanged = new TextUpdateEvent();
+
+        [SerializeField] private Selectable _textBox;
+        [SerializeField] private Button     _fontButton;
+
+        [SerializeField] private Slider     _lineSpacingSlider;
+        [SerializeField] private Selectable _lineSpacingTextBox;
+
+        [SerializeField] private Slider     _charSpacingSlider;
+        [SerializeField] private Selectable _charSpacingTextBox;
+
+        [SerializeField] private Toggle _boldButton;
+        [SerializeField] private Toggle _italicButton;
+        [SerializeField] private Toggle _underlineButton;
+        [SerializeField] private Toggle _smallCapsButton;
+        [SerializeField] private Toggle _verticalButton;
+
+        private string         _text;
+        private DecalFont      _font;
+        private DecalTextStyle _style;
+        private Vector2        _lineSpacingRange;
+        private Vector2        _charSpacingRange;
+
+        private FontMenuController _fontMenu;
+
+        private bool _ignoreUpdates;
+
+        public static TextEntryController Create(
+            string text, DecalFont font, DecalTextStyle style,
+            Vector2 lineSpacingRange, Vector2 charSpacingRange,
+            UnityAction<string, DecalFont, DecalTextStyle> textUpdateCallback) {
+
+            var window = Instantiate(UILoader.TextEntryPrefab, MainCanvasUtil.MainCanvas.transform, true);
+            window.AddComponent<DragPanel>();
+            MenuNavigation.SpawnMenuNavigation(window, Navigation.Mode.Automatic, true);
+
+            var controller = window.GetComponent<TextEntryController>();
+            controller._text = text;
+            controller._font = font;
+            controller._style = style;
+            controller._lineSpacingRange = lineSpacingRange;
+            controller._charSpacingRange = charSpacingRange;
+            controller.onValueChanged.AddListener(textUpdateCallback);
+
+            return controller;
+        }
+
+        public void Close() {
+            if (_fontMenu != null) _fontMenu.Close();
+            Destroy(gameObject);
+        }
+
+        public void OnTextUpdate(string newText) {
+            this._text = newText;
+
+            OnValueChanged();
+        }
+
+        public void OnFontMenu() {
+            if (_fontMenu == null) _fontMenu = FontMenuController.Create(DecalConfig.Fonts, _font, OnFontUpdate);
+        }
+
+        public void OnFontUpdate(DecalFont font) {
+            if (_ignoreUpdates) return;
+
+            _font = font;
+            font.SetupSample(_fontButton.GetComponentInChildren<TextMeshProUGUI>());
+
+            var textBox = ((TMP_InputField) _textBox);
+            textBox.textComponent.fontStyle = _style.FontStyle | _font.FontStyle;
+            textBox.fontAsset = _font.FontAsset;
+
+            UpdateStyleButtons();
+            OnValueChanged();
+        }
+
+        public void OnLineSpacingUpdate(float value) {
+            if (_ignoreUpdates) return;
+
+            _style.LineSpacing = Mathf.Lerp(_lineSpacingRange.x, _lineSpacingRange.y, value);
+            
+            UpdateLineSpacing();
+            OnValueChanged();
+        }
+        
+        public void OnLineSpacingUpdate(string text) {
+            if (_ignoreUpdates) return;
+
+            if (float.TryParse(text, out var value)) {
+                _style.LineSpacing = Mathf.Clamp(value, _lineSpacingRange.x, _lineSpacingRange.y);
+            }
+            else {
+                Debug.LogWarning("[ConformalDecals] line spacing value '{text}' could not be parsed.");
+            }
+            
+            UpdateLineSpacing();
+            OnValueChanged();
+        }
+
+        public void OnCharSpacingUpdate(float value) {
+            if (_ignoreUpdates) return;
+
+            _style.CharSpacing = Mathf.Lerp(_charSpacingRange.x, _charSpacingRange.y, value);
+            
+            UpdateCharSpacing();
+            OnValueChanged();
+        }
+        
+        public void OnCharSpacingUpdate(string text) {
+            if (_ignoreUpdates) return;
+
+            if (float.TryParse(text, out var value)) {
+                _style.CharSpacing = Mathf.Clamp(value, _charSpacingRange.x, _charSpacingRange.y);
+            }
+            else {
+                Debug.LogWarning("[ConformalDecals] char spacing value '{text}' could not be parsed.");
+            }
+            
+            UpdateCharSpacing();
+            OnValueChanged();
+        }
+
+        public void OnBoldUpdate(bool state) {
+            if (_ignoreUpdates) return;
+
+            _style.Bold = state;
+            OnValueChanged();
+        }
+
+        public void OnItalicUpdate(bool state) {
+            if (_ignoreUpdates) return;
+
+            _style.Italic = state;
+            OnValueChanged();
+        }
+
+        public void OnUnderlineUpdate(bool state) {
+            if (_ignoreUpdates) return;
+
+            _style.Underline = state;
+            OnValueChanged();
+        }
+
+        public void OnSmallCapsUpdate(bool state) {
+            if (_ignoreUpdates) return;
+
+            _style.SmallCaps = state;
+            OnValueChanged();
+        }
+
+        public void OnVerticalUpdate(bool state) {
+            if (_ignoreUpdates) return;
+
+            _style.Vertical = state;
+            OnValueChanged();
+        }
+
+
+        private void Start() {
+            ((TMP_InputField) _textBox).text = _text;
+
+            _font.SetupSample(_fontButton.GetComponentInChildren<TextMeshProUGUI>());
+
+            UpdateStyleButtons();
+            UpdateLineSpacing();
+            UpdateCharSpacing();
+        }
+
+        private void OnValueChanged() {
+            onValueChanged.Invoke(_text, _font, _style);
+        }
+
+        private void UpdateStyleButtons() {
+            _ignoreUpdates = true;
+
+            if (_font.Bold) {
+                _boldButton.interactable = false;
+                _boldButton.isOn = true;
+            }
+            else if (_font.BoldMask) {
+                _boldButton.interactable = false;
+                _boldButton.isOn = false;
+            }
+            else {
+                _boldButton.interactable = true;
+                _boldButton.isOn = _style.Bold;
+            }
+
+            if (_font.Italic) {
+                _italicButton.interactable = false;
+                _italicButton.isOn = true;
+            }
+            else if (_font.ItalicMask) {
+                _italicButton.interactable = false;
+                _italicButton.isOn = false;
+            }
+            else {
+                _italicButton.interactable = true;
+                _italicButton.isOn = _style.Italic;
+            }
+
+            if (_font.Underline) {
+                _underlineButton.interactable = false;
+                _underlineButton.isOn = true;
+            }
+            else if (_font.UnderlineMask) {
+                _underlineButton.interactable = false;
+                _underlineButton.isOn = false;
+            }
+            else {
+                _underlineButton.interactable = true;
+                _underlineButton.isOn = _style.Underline;
+            }
+
+            if (_font.SmallCaps) {
+                _smallCapsButton.interactable = false;
+                _smallCapsButton.isOn = true;
+            }
+            else if (_font.SmallCapsMask) {
+                _smallCapsButton.interactable = false;
+                _smallCapsButton.isOn = false;
+            }
+            else {
+                _smallCapsButton.interactable = true;
+                _smallCapsButton.isOn = _style.SmallCaps;
+            }
+
+            _verticalButton.isOn = _style.Vertical;
+
+            _ignoreUpdates = false;
+        }
+
+        private void UpdateLineSpacing() {
+            _ignoreUpdates = true;
+            
+            _lineSpacingSlider.value = Mathf.InverseLerp(_lineSpacingRange.x, _lineSpacingRange.y, _style.LineSpacing);
+            ((TMP_InputField) _lineSpacingTextBox).text = $"{_style.LineSpacing:F1}";
+            
+            _ignoreUpdates = false;
+        }
+        
+        private void UpdateCharSpacing() {
+            _ignoreUpdates = true;
+            
+            _charSpacingSlider.value = Mathf.InverseLerp(_charSpacingRange.x, _charSpacingRange.y, _style.CharSpacing);
+            ((TMP_InputField) _charSpacingTextBox).text = $"{_style.CharSpacing:F1}";
+            
+            _ignoreUpdates = false;
+        }
+    }
+}

Source/ConformalDecals/UI/UILoader.cs

@@ -0,0 +1,140 @@
+using TMPro;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace ConformalDecals.UI {
+    [KSPAddon(KSPAddon.Startup.Instantly, true)]
+    public class UILoader : MonoBehaviour {
+        private static readonly string Path = KSPUtil.ApplicationRootPath + "GameData/ConformalDecals/Resources/";
+
+        private static GameObject _textEntryPrefab;
+        private static GameObject _fontMenuPrefab;
+        private static GameObject _colorPickerPrefab;
+
+        public static GameObject FontMenuPrefab => _fontMenuPrefab;
+        public static GameObject TextEntryPrefab => _textEntryPrefab;
+        public static GameObject ColorPickerPrefab => _colorPickerPrefab;
+
+        private void Awake() {
+            var prefabs = AssetBundle.LoadFromFile(Path + "ui.conformaldecals");
+
+            _textEntryPrefab = prefabs.LoadAsset("TextEntryPanel") as GameObject;
+            _fontMenuPrefab = prefabs.LoadAsset("FontMenuPanel") as GameObject;
+            _colorPickerPrefab = prefabs.LoadAsset("ColorPickerPanel") as GameObject;
+
+            ProcessWindow(_textEntryPrefab);
+            ProcessWindow(_fontMenuPrefab);
+            ProcessWindow(_colorPickerPrefab);
+        }
+
+        private static void ProcessWindow(GameObject window) {
+            var skin = UISkinManager.defaultSkin;
+            var font = UISkinManager.TMPFont;
+
+            var background = window.GetComponent<Image>();
+            background.sprite = skin.window.normal.background;
+            background.type = Image.Type.Sliced;
+
+            var texts = window.GetComponentsInChildren<TextMeshProUGUI>(true);
+
+            foreach (var text in texts) {
+                ProcessText(text, font, Color.white);
+            }
+
+            var tags = window.GetComponentsInChildren<UITag>(true);
+
+            foreach (var tag in tags) {
+                Debug.Log($"Handling object {tag.gameObject.name}");
+                switch (tag.type) {
+                    case UITag.UIType.Window:
+                        ProcessImage(tag.gameObject, skin.window);
+                        break;
+                    case UITag.UIType.Button:
+                        ProcessSelectable(tag.gameObject, skin.button);
+                        break;
+                    case UITag.UIType.ButtonToggle:
+                        ProcessToggleButton(tag.gameObject, skin.button);
+                        break;
+                    case UITag.UIType.RadioToggle:
+                        ProcessSelectable(tag.gameObject, skin.toggle);
+                        break;
+                    case UITag.UIType.BoxSlider:
+                    case UITag.UIType.Slider:
+                        ProcessSlider(tag.gameObject, skin.horizontalSlider, skin.horizontalSliderThumb);
+                        break;
+                    case UITag.UIType.Box:
+                        ProcessSelectable(tag.gameObject, skin.box);
+                        break;
+                    case UITag.UIType.Dropdown:
+                        ProcessDropdown(tag.gameObject, skin.button, skin.window);
+                        break;
+                    case UITag.UIType.Label:
+                        ProcessText(tag.GetComponent<TextMeshProUGUI>(), font, new Color(0.718f, 0.996f, 0.000f, 1.000f), 14);
+                        break;
+                    case UITag.UIType.Header:
+                        ProcessText(tag.GetComponent<TextMeshProUGUI>(), font, new Color(0.718f, 0.996f, 0.000f, 1.000f), 16);
+                        break;
+                }
+            }
+        }
+
+        private static void ProcessImage(GameObject gameObject, UIStyle style) {
+            var image = gameObject.GetComponent<Image>();
+            if (image != null) {
+                ProcessImage(image, style.normal);
+            }
+        }
+
+        private static void ProcessImage(Image image, UIStyleState state) {
+            image.sprite = state.background;
+            image.color = Color.white;
+            image.type = Image.Type.Sliced;
+        }
+
+        private static void ProcessSelectable(GameObject gameObject, UIStyle style) {
+            var selectable = gameObject.GetComponent<Selectable>();
+            if (selectable == null) {
+                ProcessImage(gameObject, style);
+            }
+            else {
+                ProcessImage(selectable.image, style.normal);
+
+                selectable.transition = Selectable.Transition.SpriteSwap;
+
+                var state = selectable.spriteState;
+                state.highlightedSprite = style.highlight.background;
+                state.selectedSprite = style.highlight.background;
+                state.pressedSprite = style.active.background;
+                state.disabledSprite = style.disabled.background;
+                selectable.spriteState = state;
+            }
+        }
+
+        private static void ProcessToggleButton(GameObject gameObject, UIStyle style) {
+            ProcessSelectable(gameObject, style);
+
+            var toggle = gameObject.GetComponent<Toggle>();
+            if (toggle != null) ProcessImage(toggle.graphic as Image, style.active);
+        }
+
+        private static void ProcessSlider(GameObject gameObject, UIStyle backgroundStyle, UIStyle thumbStyle) {
+            ProcessSelectable(gameObject, thumbStyle);
+
+            var background = gameObject.transform.Find("Background");
+            if (background != null) ProcessImage(background.gameObject, backgroundStyle);
+        }
+
+        private static void ProcessDropdown(GameObject gameObject, UIStyle buttonStyle, UIStyle windowStyle) {
+            ProcessSelectable(gameObject, buttonStyle);
+
+            var template = gameObject.transform.Find("Template").gameObject;
+            if (template != null) ProcessImage(template, windowStyle);
+        }
+
+        private static void ProcessText(TextMeshProUGUI text, TMP_FontAsset font, Color color, int size = -1) {
+            text.font = font;
+            text.color = color;
+            if (size > 0) text.fontSize = size;
+        }
+    }
+}

Source/ConformalDecals/UI/UITag.cs

@@ -0,0 +1,21 @@
+using UnityEngine;
+
+namespace ConformalDecals.UI {
+    public class UITag : MonoBehaviour {
+        public enum UIType {
+            None,
+            Window,
+            Box,
+            Button,
+            ButtonToggle,
+            RadioToggle,
+            Slider,
+            Dropdown,
+            Label,
+            Header,
+            BoxSlider
+        }
+
+        [SerializeField] public UIType type = UIType.None;
+    }
+}

Source/ConformalDecals/Util/ColorHSL.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Globalization;
+using UnityEngine;
+
+namespace ConformalDecals.Util {
+    public struct ColorHSL : IEquatable<Color> {
+        public float h;
+        public float s;
+        public float l;
+        public float a;
+
+        public ColorHSL(float h, float s = 1, float l = 0.5f, float a = 1) {
+            this.h = h;
+            this.s = s;
+            this.l = l;
+            this.a = a;
+        }
+
+        public override string ToString() {
+            return $"HSLA({this.h:F3}, {this.s:F3}, {this.l:F3}, {this.a:F3})";
+        }
+
+        public string ToString(string format) {
+            return
+                "HSLA(" +
+                $"{this.h.ToString(format, CultureInfo.InvariantCulture.NumberFormat)}, " +
+                $"{this.s.ToString(format, CultureInfo.InvariantCulture.NumberFormat)}, " +
+                $"{this.l.ToString(format, CultureInfo.InvariantCulture.NumberFormat)}, " +
+                $"{this.a.ToString(format, CultureInfo.InvariantCulture.NumberFormat)})";
+        }
+
+        public bool Equals(ColorHSL other) {
+            return (this.h.Equals(other.h) && this.s.Equals(other.s) && this.l.Equals(other.l) && this.a.Equals(other.a));
+        }
+
+        public bool Equals(Color other) {
+            var rgb = HSL2RGB(this);
+            return rgb.Equals(other);
+        }
+
+        public override bool Equals(object obj) {
+            if (obj is ColorHSL otherHSL) return Equals(otherHSL);
+            if (obj is Color otherRGB) return Equals(otherRGB);
+
+            return false;
+        }
+
+        public override int GetHashCode() {
+            return ((Vector4) this).GetHashCode();
+        }
+
+        public float this[int index] {
+            get {
+                switch (index) {
+                    case 0:
+                        return this.h;
+                    case 1:
+                        return this.s;
+                    case 2:
+                        return this.l;
+                    case 3:
+                        return this.a;
+                    default:
+                        throw new IndexOutOfRangeException("Invalid Vector3 index!");
+                }
+            }
+            set {
+                switch (index) {
+                    case 0:
+                        this.h = value;
+                        break;
+                    case 1:
+                        this.s = value;
+                        break;
+                    case 2:
+                        this.l = value;
+                        break;
+                    case 3:
+                        this.a = value;
+                        break;
+                    default:
+                        throw new IndexOutOfRangeException("Invalid Vector3 index!");
+                }
+            }
+        }
+
+        public static bool operator ==(ColorHSL lhs, ColorHSL rhs) {
+            return lhs.Equals(rhs);
+        }
+
+        public static bool operator !=(ColorHSL lhs, ColorHSL rhs) {
+            return !(lhs == rhs);
+        }
+
+        public static implicit operator Vector4(ColorHSL c) {
+            return new Vector4(c.h, c.s, c.l, c.a);
+        }
+
+        public static implicit operator ColorHSL(Vector4 v) {
+            return new ColorHSL(v.x, v.y, v.z, v.w);
+        }
+
+        public static implicit operator ColorHSL(Color rgb) {
+            return RGB2HSL(rgb);
+        }
+
+        public static implicit operator Color(ColorHSL hsl) {
+            return HSL2RGB(hsl);
+        }
+
+        public static Color HSL2RGB(ColorHSL hsl) {
+            float a = hsl.s * Mathf.Min(hsl.l, 1 - hsl.l);
+
+            float Component(int n) {
+                float k = (n + hsl.h * 12) % 12;
+                return hsl.l - a * Mathf.Max(-1, Mathf.Min(k - 3, Mathf.Min(9 - k, 1)));
+            }
+
+            return new Color(Component(0), Component(8), Component(4), hsl.a);
+        }
+
+        public static ColorHSL RGB2HSL(Color rgb) {
+            float h = 0;
+            float s = 0;
+            float l = 0;
+
+            if (rgb.r >= rgb.g && rgb.r >= rgb.b) {
+                float xMin = Mathf.Min(rgb.g, rgb.b);
+
+                l = (rgb.r + xMin) / 2;
+                s = (rgb.r - l) / Mathf.Min(l, 1 - l);
+
+                float c = rgb.r - xMin;
+                if (c > Mathf.Epsilon) h = (rgb.g - rgb.b) / (6 * c);
+
+            }
+            else if (rgb.g >= rgb.r && rgb.g >= rgb.b) {
+                float xMin = Mathf.Min(rgb.r, rgb.b);
+
+                l = (rgb.g + xMin) / 2;
+                s = (rgb.g - l) / Mathf.Min(l, 1 - l);
+
+                float c = rgb.g - xMin;
+                if (c > Mathf.Epsilon) h = (2 + ((rgb.b - rgb.r) / c)) / 6;
+
+            }
+            else if (rgb.b >= rgb.r && rgb.b >= rgb.g) {
+                float xMin = Mathf.Min(rgb.r, rgb.g);
+
+                l = (rgb.b + xMin) / 2;
+                s = (rgb.b - l) / Mathf.Min(l, 1 - l);
+
+                float c = rgb.g - xMin;
+                if (c > Mathf.Epsilon) h = (4 + ((rgb.r - rgb.g) / c)) / 6;
+
+            }
+
+            return new ColorHSL(h, s, l, rgb.a);
+        }
+    }
+}

Source/ConformalDecals/Util/ColorHSV.cs

@@ -0,0 +1,123 @@
+using System;
+using System.Globalization;
+using UnityEngine;
+
+namespace ConformalDecals.Util {
+    public struct ColorHSV : IEquatable<Color> {
+        public float h;
+        public float s;
+        public float v;
+        public float a;
+
+        public ColorHSV(float h, float s = 1, float v = 1, float a = 1) {
+            this.h = h;
+            this.s = s;
+            this.v = v;
+            this.a = a;
+        }
+
+        public override string ToString() {
+            return $"HSVA({this.h:F3}, {this.s:F3}, {this.v:F3}, {this.a:F3})";
+        }
+
+        public string ToString(string format) {
+            return
+                "HSVA(" +
+                $"{this.h.ToString(format, CultureInfo.InvariantCulture.NumberFormat)}, " +
+                $"{this.s.ToString(format, CultureInfo.InvariantCulture.NumberFormat)}, " +
+                $"{this.v.ToString(format, CultureInfo.InvariantCulture.NumberFormat)}, " +
+                $"{this.a.ToString(format, CultureInfo.InvariantCulture.NumberFormat)})";
+        }
+
+        public bool Equals(ColorHSL other) {
+            return (this.h.Equals(other.h) && this.s.Equals(other.s) && this.v.Equals(other.l) && this.a.Equals(other.a));
+        }
+
+        public bool Equals(Color other) {
+            var rgb = HSV2RGB(this);
+            return rgb.Equals(other);
+        }
+
+        public override bool Equals(object obj) {
+            if (obj is ColorHSL otherHSL) return Equals(otherHSL);
+            if (obj is Color otherRGB) return Equals(otherRGB);
+
+            return false;
+        }
+
+        public override int GetHashCode() {
+            return ((Vector4) this).GetHashCode();
+        }
+
+        public float this[int index] {
+            get {
+                switch (index) {
+                    case 0:
+                        return this.h;
+                    case 1:
+                        return this.s;
+                    case 2:
+                        return this.v;
+                    case 3:
+                        return this.a;
+                    default:
+                        throw new IndexOutOfRangeException("Invalid Vector3 index!");
+                }
+            }
+            set {
+                switch (index) {
+                    case 0:
+                        this.h = value;
+                        break;
+                    case 1:
+                        this.s = value;
+                        break;
+                    case 2:
+                        this.v = value;
+                        break;
+                    case 3:
+                        this.a = value;
+                        break;
+                    default:
+                        throw new IndexOutOfRangeException("Invalid Vector3 index!");
+                }
+            }
+        }
+
+        public static bool operator ==(ColorHSV lhs, ColorHSV rhs) {
+            return lhs.Equals(rhs);
+        }
+
+        public static bool operator !=(ColorHSV lhs, ColorHSV rhs) {
+            return !(lhs == rhs);
+        }
+
+        public static implicit operator Vector4(ColorHSV c) {
+            return new Vector4(c.h, c.s, c.v, c.a);
+        }
+
+        public static implicit operator ColorHSV(Vector4 v) {
+            return new ColorHSV(v.x, v.y, v.z, v.w);
+        }
+
+        public static implicit operator ColorHSV(Color rgb) {
+            return RGB2HSV(rgb);
+        }
+
+        public static implicit operator Color(ColorHSV hsv) {
+            return HSV2RGB(hsv);
+        }
+
+        public static Color HSV2RGB(ColorHSV hsv) {
+            var rgb = Color.HSVToRGB(hsv.h, hsv.s, hsv.v, false);
+            rgb.a = hsv.a;
+            return rgb;
+        }
+
+        public static ColorHSV RGB2HSV(Color rgb) {
+            var hsv = new ColorHSV {a = rgb.a};
+            Color.RGBToHSV(rgb, out hsv.h, out hsv.s, out hsv.v);
+            return hsv; 
+        }
+    }
+}

Source/ConformalDecals/Util/ParseUtil.cs

@@ -139,44 +139,53 @@ namespace ConformalDecals.Util {
             throw new FormatException($"Improperly formatted {typeof(T)} value for {valueName} : '{valueString}");
         }
 
+        public static bool TryParseHexColor(string valueString, out Color32 value) {
+            value = new Color32(0, 0, 0, byte.MaxValue);
+
+            if (!int.TryParse(valueString, System.Globalization.NumberStyles.HexNumber, null, out var hexColor)) return false;
+
+            switch (valueString.Length) {
+                case 8: // RRGGBBAA
+                    value.a = (byte) (hexColor & 0xFF);
+                    hexColor >>= 8;
+                    goto case 6;
+
+                case 6: // RRGGBB
+                    value.b = (byte) (hexColor & 0xFF);
+                    hexColor >>= 8;
+                    value.g = (byte) (hexColor & 0xFF);
+                    hexColor >>= 8;
+                    value.r = (byte) (hexColor & 0xFF);
+                    return true;
+
+                case 4: // RGBA
+                    value.a = (byte) ((hexColor & 0xF) << 4);
+                    hexColor >>= 4;
+                    goto case 3;
+
+                case 3: // RGB
+                    value.b = (byte) (hexColor & 0xF << 4);
+                    hexColor >>= 4;
+                    value.g = (byte) (hexColor & 0xF << 4);
+                    hexColor >>= 4;
+                    value.r = (byte) (hexColor & 0xF << 4);
+                    return true;
+
+                default:
+                    return false;
+            }
+        }
+
         public static bool TryParseColor32(string valueString, out Color32 value) {
             value = new Color32(0, 0, 0, byte.MaxValue);
 
-            // HTML-style hex color
+            // hex color
             if (valueString[0] == '#') {
                 var hexColorString = valueString.Substring(1);
 
-                if (!int.TryParse(hexColorString, System.Globalization.NumberStyles.HexNumber, null, out var hexColor)) return false;
-
-                switch (hexColorString.Length) {
-                    case 8: // RRGGBBAA
-                        value.a = (byte) (hexColor & 0xFF);
-                        hexColor >>= 8;
-                        goto case 6;
-
-                    case 6: // RRGGBB
-                        value.b = (byte) (hexColor & 0xFF);
-                        hexColor >>= 8;
-                        value.g = (byte) (hexColor & 0xFF);
-                        hexColor >>= 8;
-                        value.r = (byte) (hexColor & 0xFF);
-                        return true;
-
-                    case 4: // RGBA
-                        value.a = (byte) ((hexColor & 0xF) << 4);
-                        hexColor >>= 4;
-                        goto case 3;
-
-                    case 3: // RGB
-                        value.b = (byte) (hexColor & 0xF << 4);
-                        hexColor >>= 4;
-                        value.g = (byte) (hexColor & 0xF << 4);
-                        hexColor >>= 4;
-                        value.r = (byte) (hexColor & 0xF << 4);
-                        return true;
-
-                    default:
-                        return false;
+                if (TryParseHexColor(hexColorString, out var hexColor)) {
+                    value = hexColor;
+                    return true;
                 }
             }
 

Source/ConformalDecals/Util/TextureUtils.cs

@@ -0,0 +1,263 @@
+using UnityEngine;
+
+namespace ConformalDecals.Util {
+    public static class TextureUtils {
+        public enum BlitMode {
+            Set,
+            Add,
+        }
+
+        public static Color32 AddColor32(Color32 color1, Color32 color2) {
+            return new Color32((byte) (color1.r + color2.r), (byte) (color1.g + color2.g), (byte) (color1.b + color2.b), (byte) (color1.a + color2.a));
+        }
+
+        public static Color32 AddColor32Clamped(Color32 color1, Color32 color2) {
+            var r = color1.r + color2.r;
+            var g = color1.g + color2.g;
+            var b = color1.b + color2.b;
+            var a = color1.a + color2.a;
+            if (r > byte.MaxValue) r = byte.MaxValue;
+            if (g > byte.MaxValue) g = byte.MaxValue;
+            if (b > byte.MaxValue) b = byte.MaxValue;
+            if (a > byte.MaxValue) a = byte.MaxValue;
+
+            return new Color32((byte) r, (byte) g, (byte) b, (byte) a);
+        }
+
+        public static void ClearTexture(Color32[] colors, Color32 clearColor = default) {
+            for (var i = 0; i < colors.Length; i++) {
+                colors[i] = clearColor;
+            }
+        }
+
+        public static void BlitRectAlpha(
+            Texture2D src, Color32[] srcColors, Vector2Int srcPos,
+            Texture2D dst, Color32[] dstColors, Vector2Int dstPos,
+            Vector2Int size, BlitMode mode) {
+
+            ClipRect(src, ref srcPos, dst, ref dstPos, ref size);
+
+            if (size.x <= 0 || size.y <= 0) return;
+
+            int srcIndex = srcPos.x + srcPos.y * src.width;
+            int dstIndex = dstPos.x + dstPos.y * dst.width;
+
+            for (int dy = size.y - 1; dy >= 0; dy--) {
+
+                for (int dx = size.x - 1; dx >= 0; dx--) {
+                    switch (mode) {
+                        case BlitMode.Set:
+                            dstColors[dstIndex + dx].a = srcColors[srcIndex + dx].a;
+                            break;
+                        case BlitMode.Add:
+                            var s = srcColors[srcIndex + dx].a;
+                            var d = dstColors[dstIndex + dx].a;
+                            var sum = s + d;
+                            if (sum > byte.MaxValue) sum = byte.MaxValue;
+                            dstColors[dstIndex + dx].a = (byte) sum;
+                            break;
+                    }
+                }
+
+                srcIndex += src.width;
+                dstIndex += dst.width;
+            }
+        }
+
+        public static void BlitRect(
+            Texture2D src, Color32[] srcColors, Vector2Int srcPos,
+            Texture2D dst, Color32[] dstColors, Vector2Int dstPos,
+            Vector2Int size, BlitMode mode) {
+
+            ClipRect(src, ref srcPos, dst, ref dstPos, ref size);
+
+            if (size.x <= 0 || size.y <= 0) return;
+
+            int srcIndex = srcPos.x + srcPos.y * src.width;
+            int dstIndex = dstPos.x + dstPos.y * dst.width;
+
+            for (int dy = 0; dy < size.y; dy++) {
+
+                for (int dx = 0; dx < size.x; dx++) {
+                    switch (mode) {
+                        case BlitMode.Set:
+                            dstColors[dstIndex + dx] = srcColors[srcIndex + dx];
+                            break;
+                        case BlitMode.Add:
+                            dstColors[dstIndex + dx] = AddColor32Clamped(srcColors[srcIndex + dx], dstColors[dstIndex + dx]);
+                            break;
+                    }
+                }
+
+                srcIndex += src.width;
+                dstIndex += dst.width;
+            }
+        }
+
+        public static void BlitRectBilinearAlpha(
+            Texture2D src, Vector2Int srcPos, Vector2 srcSize,
+            Texture2D dst, Color32[] dstColors, Vector2Int dstPos, Vector2Int dstSize,
+            BlitMode mode) {
+
+            var sizeRatio = dstSize / srcSize;
+
+            ClipRect(src, ref srcPos, dst, ref dstPos, ref srcSize, ref dstSize);
+
+            if (dstSize.x <= 0 || dstSize.y <= 0) return;
+
+            var srcPixel = new Vector2(1.0f / src.width, 1.0f / src.height);
+            var srcStart = (srcPos * srcPixel) + (srcPixel / 2);
+            var srcStep = sizeRatio * srcPixel;
+            var srcY = srcStart.y;
+
+            int dstIndex = dstPos.x + dstPos.y * dst.width;
+            for (int dy = 0;
+                dy < dstSize.y;
+                dy++) {
+                var srcX = srcStart.x;
+
+                for (int dx = 0; dx < dstSize.x; dx++) {
+                    switch (mode) {
+                        case BlitMode.Set:
+                            dstColors[dstIndex + dx].a = (byte) (src.GetPixelBilinear(srcX, srcY).a * byte.MaxValue);
+                            break;
+                        case BlitMode.Add:
+                            var s = (byte) (src.GetPixelBilinear(srcX, srcY).a * byte.MaxValue);
+                            var d = dstColors[dstIndex + dx].a;
+                            var sum = s + d;
+                            if (sum > byte.MaxValue) sum = byte.MaxValue;
+                            dstColors[dstIndex + dx].a = (byte) sum;
+                            break;
+                    }
+
+                    srcX += srcStep.x;
+                }
+
+                srcY += srcStep.y;
+                dstIndex += dst.width;
+            }
+        }
+
+        public static void BlitRectBilinear(
+            Texture2D src, Vector2Int srcPos, Vector2 srcSize,
+            Texture2D dst, Color32[] dstColors, Vector2Int dstPos, Vector2Int dstSize,
+            BlitMode mode) {
+
+            var sizeRatio = dstSize / srcSize;
+
+            ClipRect(src, ref srcPos, dst, ref dstPos, ref srcSize, ref dstSize);
+
+            if (dstSize.x <= 0 || dstSize.y <= 0) return;
+
+            var srcPixel = new Vector2(1.0f / src.width, 1.0f / src.height);
+            var srcStart = (srcPos * srcPixel) + (srcPixel / 2);
+            var srcStep = sizeRatio * srcPixel;
+            var srcY = srcStart.y;
+
+            int dstIndex = dstPos.x + dstPos.y * dst.width;
+            for (int dy = 0;
+                dy < dstSize.y;
+                dy++) {
+                var srcX = srcStart.x;
+
+                for (int dx = 0; dx < dstSize.x; dx++) {
+                    switch (mode) {
+                        case BlitMode.Set:
+                            dstColors[dstIndex + dx] = src.GetPixelBilinear(srcX, srcY);
+                            break;
+                        case BlitMode.Add:
+                            dstColors[dstIndex + dx] = AddColor32Clamped(src.GetPixelBilinear(srcX, srcY), dstColors[dstIndex + dx]);
+                            break;
+                    }
+
+                    srcX += srcStep.x;
+                }
+
+                srcY += srcStep.y;
+                dstIndex += dst.width;
+            }
+        }
+
+        private static void ClipRect(Texture2D src, ref Vector2Int srcPos, Texture2D dst, ref Vector2Int dstPos, ref Vector2Int size) {
+            if (srcPos.x < 0) {
+                size.x += srcPos.x;
+                dstPos.x -= srcPos.x;
+                srcPos.x = 0;
+            }
+
+            if (srcPos.y < 0) {
+                size.y += srcPos.y;
+                dstPos.y -= srcPos.y;
+                srcPos.y = 0;
+            }
+
+            if (dstPos.x < 0) {
+                size.x += dstPos.x;
+                srcPos.x -= dstPos.x;
+                dstPos.x = 0;
+            }
+
+            if (dstPos.y < 0) {
+                size.y += dstPos.y;
+                srcPos.y -= dstPos.y;
+                dstPos.y = 0;
+            }
+
+            if (srcPos.x + size.x > src.width) size.x = src.width - srcPos.x;
+            if (srcPos.y + size.y > src.height) size.y = src.height - srcPos.y;
+            if (dstPos.x + size.x > dst.width) size.x = dst.width - srcPos.x;
+            if (dstPos.y + size.y > dst.height) size.y = dst.height - srcPos.y;
+        }
+
+        private static void ClipRect(Texture2D src, ref Vector2Int srcPos, Texture2D dst, ref Vector2Int dstPos, ref Vector2 srcSize, ref Vector2Int dstSize) {
+            var sizeRatio = dstSize / srcSize;
+            if (srcPos.x < 0) {
+                dstSize.x += (int) (srcPos.x * sizeRatio.x);
+                dstPos.x -= (int) (srcPos.x * sizeRatio.x);
+                srcSize.x += srcPos.x;
+                srcPos.x = 0;
+            }
+
+            if (srcPos.y < 0) {
+                dstSize.y += (int) (srcPos.y * sizeRatio.y);
+                dstPos.y -= (int) (srcPos.y * sizeRatio.y);
+                srcSize.y += srcPos.y;
+                srcPos.y = 0;
+            }
+
+            if (dstPos.x < 0) {
+                srcSize.x += dstPos.x / sizeRatio.x;
+                srcPos.x -= (int) (dstPos.x / sizeRatio.x);
+                dstSize.x += dstPos.x;
+                dstPos.x = 0;
+            }
+
+            if (dstPos.y < 0) {
+                srcSize.y += dstPos.y / sizeRatio.y;
+                srcPos.y -= (int) (dstPos.y / sizeRatio.y);
+                dstSize.y += dstPos.y;
+                dstPos.y = 0;
+            }
+
+            if (srcPos.x + srcSize.x > src.width) {
+                srcSize.x = src.width - srcPos.x;
+                dstSize.x = (int) (srcSize.x * sizeRatio.x);
+            }
+
+            if (srcPos.y + srcSize.y > src.height) {
+                srcSize.y = src.height - srcPos.y;
+                dstSize.y = (int) (srcSize.y * sizeRatio.y);
+            }
+
+            if (dstPos.x + dstSize.x > dst.width) {
+                dstSize.x = dst.width - srcPos.x;
+                srcSize.x = (int) (dstSize.x / sizeRatio.x);
+            }
+
+            if (dstPos.y + dstSize.y > dst.height) {
+                dstSize.y = dst.height - srcPos.y;
+                srcSize.y = (int) (dstSize.y / sizeRatio.y);
+            }
+        }
+    }
+}

changelog.txt

@@ -2,15 +2,16 @@ v0.2.0
 ------
 - New Parts:
  - CDL-3 Surface Base Decal: A set of conformal decals based on the symbols from the movie Moon designed by Gavin Rothery
+ - CDL-T Custom Text Decal: A customizable text decal with a variety of fonts
 - Changes:
  - New "KEYWORD" material modifier, allowing for shader features to be enabled and disabled.
  - material modifiers can now be removed in variants by setting `remove = true` inside them.
- - Unified all shaders into a single "Standard" shader with variants supporting any combination of bump, specular and emissive maps, plus SDF alphas.
+ - Unified all decal shaders into a single "Standard" shader with variants supporting any combination of bump, specular and emissive maps, plus SDF alphas.
   - Old shaders are remapped to Standard shader plus keywords automatically.
   - New SDF-based antialiasing for when decals extend to their borders, i.e. on opaque flags.
 - Fixes:
  - Fixed WIDTH and HEIGHT scale modes being flipped
- - Removed debug log statements
+ - Removed some debug log statements
 
 v0.1.4
 ------