Saving tests

# Conflicts:
#	GameData/ConformalDecals/Plugins/ConformalDecals.dll
#	Source/ConformalDecals/ModuleConformalDecal.cs
#	Source/ConformalDecals/ModuleConformalText.cs

.gitignore

@@ -49,5 +49,7 @@ Source/ConformalDecals/bin
 .ds_store
 *.sublime*
 .idea
+.vs
 obj
 *.swp
+Source/.editorconfig

Assets/Scripts/TextRenderTest.cs

@@ -30,8 +30,6 @@ public class TextRenderTest : MonoBehaviour {
         Debug.Log("starting...");
 
         StartCoroutine(OnRender());
-        var thing = new GameObject();
-        thing.AddComponent<TextMeshPro>();
     }
 
     // Update is called once per frame

GameData/ConformalDecals/Localization/en-us.cfg

@@ -15,7 +15,7 @@ Localization
     #LOC_ConformalDecals_gui-opacity = Opacity
     #LOC_ConformalDecals_gui-cutoff = Cutoff
     #LOC_ConformalDecals_gui-wear = Edge Wear
-    #LOC_ConformalDecals_gui-aspectratio = Aspect Ratio
+    #LOC_ConformalDecals_gui-multiproject = Project onto Multiple
     #LOC_ConformalDecals_gui-select-flag = Select Flag
     #LOC_ConformalDecals_gui-reset-flag = Reset Flag
     #LOC_ConformalDecals_gui-set-text = Set Text

GameData/ConformalDecals/Parts/Generic/decal-generic.cfg

@@ -98,7 +98,7 @@ PART
       MODULE {
         IDENTIFIER { name = ModuleConformalDecal }
         DATA { 
-          shader = ConformalDecals/Paint/DiffuseSDF
+          KEYWORD { name = DECAL_SDF_ALPHA }
           tile = 0, 2, 128, 112 
         }      
       }

Source/ConformalDecals.sln

@@ -1,6 +1,12 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConformalDecals", "ConformalDecals/ConformalDecals.csproj", "{1EA983F9-42E5-494E-9683-FDAC9C9121F4}"
+# Visual Studio Version 16
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConformalDecals", "ConformalDecals\ConformalDecals.csproj", "{1EA983F9-42E5-494E-9683-FDAC9C9121F4}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{C2564402-B081-479B-B723-D5C065BC884E}"
+	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -13,4 +19,28 @@ Global
 		{1EA983F9-42E5-494E-9683-FDAC9C9121F4}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{1EA983F9-42E5-494E-9683-FDAC9C9121F4}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
+	GlobalSection(MonoDevelopProperties) = preSolution
+		Policies = $0
+		$0.DotNetNamingPolicy = $1
+		$1.DirectoryNamespaceAssociation = PrefixedHierarchical
+		$0.TextStylePolicy = $2
+		$2.FileWidth = 80
+		$2.TabsToSpaces = True
+		$2.scope = text/x-csharp
+		$2.NoTabsAfterNonTabs = True
+		$2.EolMarker = Unix
+		$0.CSharpFormattingPolicy = $3
+		$3.NewLinesForBracesInTypes = False
+		$3.NewLinesForBracesInMethods = False
+		$3.NewLinesForBracesInProperties = False
+		$3.NewLinesForBracesInAccessors = False
+		$3.NewLinesForBracesInAnonymousMethods = False
+		$3.NewLinesForBracesInControlBlocks = False
+		$3.NewLinesForBracesInAnonymousTypes = False
+		$3.NewLinesForBracesInObjectCollectionArrayInitializers = False
+		$3.NewLinesForBracesInLambdaExpressionBody = False
+		$3.scope = text/x-csharp
+		$3.SpaceAfterCast = True
+		$0.StandardHeader = $4
+	EndGlobalSection
 EndGlobal

Source/ConformalDecals/ConformalDecals.csproj

@@ -47,9 +47,11 @@
         <None Remove="dlls\**" />
     </ItemGroup>
 
+    <ItemGroup>
+      <None Include="..\.editorconfig" />
+    </ItemGroup>
     <Target Name="PostBuild" AfterTargets="PostBuildEvent">
-        <Exec Command="/bin/cp -v '$(OutDir)ConformalDecals.dll' '$(SolutionDir)../GameData/ConformalDecals/Plugins'" IgnoreExitCode="true" />
-        <!--Fuck you MSBuild stop trying to run CMD.exe on macOS-->
+        <Exec Command="/bin/cp -v '$(OutDir)ConformalDecals.dll' '$(SolutionDir)../GameData/ConformalDecals/Plugins'" />
     </Target>
 
 </Project>

Source/ConformalDecals/DecalConfig.cs

@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using ConformalDecals.Text;
 using ConformalDecals.Util;
 using TMPro;
-using UniLinq;
 using UnityEngine;
 
 namespace ConformalDecals {
@@ -51,8 +50,6 @@ namespace ConformalDecals {
 
         public static IEnumerable<DecalFont> Fonts => _fontList.Values;
 
-        public static DecalFont FallbackFont { get; private set; }
-
         public static bool IsBlacklisted(Shader shader) {
             return IsBlacklisted(shader.name);
         }
@@ -97,7 +94,7 @@ namespace ConformalDecals {
 
             foreach (var fontNode in node.GetNodes("FONT")) {
                 try {
-                    var font = new DecalFont(fontNode, allFonts);
+                    var font = DecalFont.Parse(fontNode, allFonts);
                     _fontList.Add(font.Name, font);
                 }
                 catch (Exception e) {
@@ -114,12 +111,8 @@ namespace ConformalDecals {
             var colors = new[] {color, color, color, color};
 
             var tex = new Texture2D(width, height, TextureFormat.RGBA32, false);
-            for (var x = 0; x <= width; x++) {
-                for (var y = 0; y < height; y++) {
-                    tex.SetPixels32(colors);
-                }
-            }
 
+            tex.SetPixels32(colors);
             tex.Apply();
 
             return tex;
@@ -133,7 +126,7 @@ namespace ConformalDecals {
             var configs = GameDatabase.Instance.GetConfigs("CONFORMALDECALS");
 
             if (configs.Length > 0) {
-                Logging.Log("loading config");
+                Logging.Log("Loading config");
                 foreach (var config in configs) {
                     ParseConfig(config.config);
                 }

Source/ConformalDecals/IProjectionTarget.cs

@@ -0,0 +1,9 @@
+using UnityEngine;
+
+namespace ConformalDecals {
+    public interface IProjectionTarget {
+        bool Project(Matrix4x4 orthoMatrix, Transform projector, Bounds projectionBounds);
+        void Render(Material decalMaterial, MaterialPropertyBlock partMPB, Camera camera);
+        ConfigNode Save();
+    }
+}

Source/ConformalDecals/MaterialProperties/MaterialKeywordProperty.cs

@@ -8,7 +8,7 @@ namespace ConformalDecals.MaterialProperties {
         public override void ParseNode(ConfigNode node) {
             base.ParseNode(node);
 
-            ParseUtil.ParseBoolIndirect(ref value, node, "value");
+            value = ParseUtil.ParseBool(node, "value", true, true);
         }
 
         public override void Modify(Material material) {

Source/ConformalDecals/MaterialProperties/MaterialPropertyCollection.cs

@@ -105,6 +105,28 @@ namespace ConformalDecals.MaterialProperties {
             _materialProperties ??= new Dictionary<string, MaterialProperty>();
         }
 
+        public void Load(ConfigNode node) {
+            // add keyword nodes
+            foreach (var keywordNode in node.GetNodes("KEYWORD")) {
+                ParseProperty<MaterialKeywordProperty>(keywordNode);
+            }
+
+            // add texture nodes
+            foreach (var textureNode in node.GetNodes("TEXTURE")) {
+                ParseProperty<MaterialTextureProperty>(textureNode);
+            }
+
+            // add float nodes
+            foreach (var floatNode in node.GetNodes("FLOAT")) {
+                ParseProperty<MaterialTextureProperty>(floatNode);
+            }
+
+            // add color nodes
+            foreach (var colorNode in node.GetNodes("COLOR")) {
+                ParseProperty<MaterialColorProperty>(colorNode);
+            }
+        }
+
         public void OnDestroy() {
             if (_decalMaterial != null) Destroy(_decalMaterial);
             if (_previewMaterial != null) Destroy(_previewMaterial);
@@ -186,13 +208,14 @@ namespace ConformalDecals.MaterialProperties {
         public T ParseProperty<T>(ConfigNode node) where T : MaterialProperty {
             string propertyName = "";
             if (!ParseUtil.ParseStringIndirect(ref propertyName, node, "name")) throw new ArgumentException("node has no name");
+            Logging.Log($"Parsing material property {propertyName}");
 
             if (ParseUtil.ParseBool(node, "remove", true)) RemoveProperty(propertyName);
 
             var newProperty = AddOrGetProperty<T>(propertyName);
             newProperty.ParseNode(node);
 
-            if (newProperty is MaterialTextureProperty textureProperty && textureProperty.isMain) {
+            if (newProperty is MaterialTextureProperty {isMain: true} textureProperty) {
                 _mainTexture = textureProperty;
             }
 

Source/ConformalDecals/MaterialProperties/MaterialTextureProperty.cs

@@ -44,7 +44,7 @@ namespace ConformalDecals.MaterialProperties {
         public float AspectRatio {
             get {
                 if (_texture == null) return 1;
-                if (_textureUrl?.Contains("Squad/Flags") == true) return 0.625f;
+                if (_textureUrl?.Contains("Squad/Flags") == true) return 0.625f; // squad flags are slightly stretched, so unstretch them
                 return MaskedHeight / (float) MaskedWidth;
             }
         }

Source/ConformalDecals/ModuleConformalDecal.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using ConformalDecals.MaterialProperties;
 using ConformalDecals.Util;
+using UniLinq;
 using UnityEngine;
 
 namespace ConformalDecals {
@@ -79,7 +80,9 @@ namespace ConformalDecals {
          UI_FloatRange()]
         public float wear = 100;
 
-        [KSPField(isPersistant = true)] public bool projectMultiple; // reserved for future features. do not modify
+        [KSPField(guiName = "#LOC_ConformalDecals_gui-multiproject", guiActive = false, guiActiveEditor = true, isPersistant = true),
+         UI_Toggle()]
+        public bool projectMultiple = true;
 
         [KSPField] public MaterialPropertyCollection materialProperties;
 
@@ -96,7 +99,7 @@ namespace ConformalDecals {
         private const  int DecalQueueMax      = 2400;
         private static int _decalQueueCounter = -1;
 
-        private List<ProjectionTarget> _targets;
+        private Dictionary<Part, ProjectionPartTarget> _targets = new Dictionary<Part, ProjectionPartTarget>();
 
         private bool      _isAttached;
         private Matrix4x4 _orthoMatrix;
@@ -116,6 +119,8 @@ namespace ConformalDecals {
             }
         }
 
+        // EVENTS
+
         /// <inheritdoc />
         public override void OnAwake() {
             base.OnAwake();
@@ -130,114 +135,39 @@ namespace ConformalDecals {
 
         /// <inheritdoc />
         public override void OnLoad(ConfigNode node) {
+            // Load
             try {
-                // SETUP TRANSFORMS
-                decalFrontTransform = part.FindModelTransform(decalFront);
-                if (decalFrontTransform == null) throw new FormatException($"Could not find decalFront transform: '{decalFront}'.");
-
-                decalBackTransform = part.FindModelTransform(decalBack);
-                if (decalBackTransform == null) throw new FormatException($"Could not find decalBack transform: '{decalBack}'.");
-
-                decalModelTransform = part.FindModelTransform(decalModel);
-                if (decalModelTransform == null) throw new FormatException($"Could not find decalModel transform: '{decalModel}'.");
-
-                decalProjectorTransform = part.FindModelTransform(decalProjector);
-                if (decalProjectorTransform == null) throw new FormatException($"Could not find decalProjector transform: '{decalProjector}'.");
-
-                decalColliderTransform = part.FindModelTransform(decalCollider);
-                if (decalColliderTransform == null) throw new FormatException($"Could not find decalCollider transform: '{decalCollider}'.");
-
-                // SETUP BACK MATERIAL
-                if (updateBackScale) {
-                    var backRenderer = decalBackTransform.GetComponent<MeshRenderer>();
-                    if (backRenderer == null) {
-                        this.LogError($"Specified decalBack transform {decalBack} has no renderer attached! Setting updateBackScale to false.");
-                        updateBackScale = false;
-                    }
-                    else {
-                        backMaterial = backRenderer.material;
-                        if (backMaterial == null) {
-                            this.LogError($"Specified decalBack transform {decalBack} has a renderer but no material! Setting updateBackScale to false.");
-                            updateBackScale = false;
-                        }
-                        else {
-                            if (backTextureBaseScale == default) backTextureBaseScale = backMaterial.GetTextureScale(PropertyIDs._MainTex);
-                        }
-                    }
-                }
-
-                // PARSE MATERIAL PROPERTIES
-
-                // set shader
-                materialProperties.SetShader(shader);
-                materialProperties.AddOrGetProperty<MaterialKeywordProperty>("DECAL_BASE_NORMAL").value = useBaseNormal;
-
-                // add keyword nodes
-                foreach (var keywordNode in node.GetNodes("KEYWORD")) {
-                    materialProperties.ParseProperty<MaterialKeywordProperty>(keywordNode);
-                }
-
-                // add texture nodes
-                foreach (var textureNode in node.GetNodes("TEXTURE")) {
-                    materialProperties.ParseProperty<MaterialTextureProperty>(textureNode);
-                }
-
-                // add float nodes
-                foreach (var floatNode in node.GetNodes("FLOAT")) {
-                    materialProperties.ParseProperty<MaterialTextureProperty>(floatNode);
-                }
-
-                // add color nodes
-                foreach (var colorNode in node.GetNodes("COLOR")) {
-                    materialProperties.ParseProperty<MaterialColorProperty>(colorNode);
-                }
-
-                // handle texture tiling parameters
-                var tileString = node.GetValue("tile");
-                if (!string.IsNullOrEmpty(tileString)) {
-                    var tileValid = ParseExtensions.TryParseRect(tileString, out tileRect);
-                    if (!tileValid) throw new FormatException($"Invalid rect value for tile '{tileString}'");
-                }
-
-                if (tileRect.x >= 0) {
-                    materialProperties.UpdateTile(tileRect);
-                }
-                else if (tileIndex >= 0) {
-                    materialProperties.UpdateTile(tileIndex, tileSize);
-                }
+                LoadDecal(node);
             }
             catch (Exception e) {
-                this.LogException("Exception parsing partmodule", e);
+                this.LogException("Error loading decal", e);
             }
 
-            UpdateMaterials();
-
-            foreach (var keyword in _decalMaterial.shaderKeywords) {
-                this.Log($"keyword: {keyword}");
+            // Setup
+            try {
+                SetupDecal();
             }
-
-            if (HighLogic.LoadedSceneIsEditor) {
-                UpdateTweakables();
-            }
-
-            if (HighLogic.LoadedSceneIsGame) {
-                UpdateScale();
-            }
-            else {
-                scale = defaultScale;
-                depth = defaultDepth;
-                opacity = defaultOpacity;
-                cutoff = defaultCutoff;
-                wear = defaultWear;
-
-                // QUEUE PART FOR ICON FIXING IN VAB
-                DecalIconFixer.QueuePart(part.name);
+            catch (Exception e) {
+                this.LogException("Error setting up decal", e);
             }
         }
 
+        /// <inheritdoc />
+        public override void OnSave(ConfigNode node) {
+            // SAVE TARGETS
+            if (HighLogic.LoadedSceneIsFlight) {
+                foreach (var partTarget in _targets.Values) {
+                    if (partTarget.enabled) node.AddNode(partTarget.Save());
+                }
+            }
+
+            base.OnSave(node);
+        }
+
         /// <inheritdoc />
         public override void OnIconCreate() {
-            UpdateScale();
+            UpdateTextures();
+            UpdateProjection();
         }
 
         /// <inheritdoc />
@@ -255,6 +185,8 @@ namespace ConformalDecals {
             }
         }
 
+        /// Called after OnStart is finished for all parts
+        /// This is mostly used to make sure all B9 variants are already in place for the rest of the vessel
         public override void OnStartFinished(StartState state) {
             // handle game events
             if (HighLogic.LoadedSceneIsGame) {
@@ -283,6 +215,7 @@ namespace ConformalDecals {
             }
         }
 
+        /// Called when the decal is destroyed
         public virtual void OnDestroy() {
             // remove GameEvents
             if (HighLogic.LoadedSceneIsEditor) {
@@ -301,17 +234,21 @@ namespace ConformalDecals {
             Destroy(materialProperties);
         }
 
-        protected void OnSizeTweakEvent(BaseField field, object obj) {
+        /// Called when the decal's projection and scale is modified through a tweakable
+        protected void OnProjectionTweakEvent(BaseField field, object obj) {
             // scale or depth values have been changed, so update scale
             // and update projection matrices if attached
-            UpdateScale();
+            UpdateProjection();
+            UpdateTargets();
 
             foreach (var counterpart in part.symmetryCounterparts) {
                 var decal = counterpart.GetComponent<ModuleConformalDecal>();
-                decal.UpdateScale();
+                decal.UpdateProjection();
+                decal.UpdateTargets();
             }
         }
 
+        /// Called when the decal's material is modified through a tweakable
         protected void OnMaterialTweakEvent(BaseField field, object obj) {
             materialProperties.SetOpacity(opacity);
             materialProperties.SetCutoff(cutoff);
@@ -329,35 +266,85 @@ namespace ConformalDecals {
             }
         }
 
+        /// Called when a new variant is applied in the editor
         protected void OnVariantApplied(Part eventPart, PartVariant variant) {
-            if (_isAttached && eventPart == part.parent) {
+            if (_isAttached && eventPart != null && (!projectMultiple || eventPart == part.parent)) {
+                _targets.Remove(eventPart);
                 UpdateTargets();
             }
         }
 
+        /// Called when an editor event occurs
         protected void OnEditorEvent(ConstructionEventType eventType, Part eventPart) {
-            if (this.part != eventPart && !part.symmetryCounterparts.Contains(eventPart)) return;
             switch (eventType) {
                 case ConstructionEventType.PartAttached:
-                    OnAttach();
+                    OnPartAttached(eventPart);
                     break;
                 case ConstructionEventType.PartDetached:
-                    OnDetach();
+                    OnPartDetached(eventPart);
                     break;
                 case ConstructionEventType.PartOffsetting:
                 case ConstructionEventType.PartRotating:
-                    UpdateScale();
+                    OnPartTransformed(eventPart);
                     break;
             }
         }
 
+        /// Called when a part is transformed in the editor
+        protected void OnPartTransformed(Part eventPart) {
+            if (this.part == eventPart) {
+                UpdateProjection();
+                UpdateTargets();
+            }
+            else if (_isAttached && projectMultiple) {
+                UpdatePartTarget(eventPart, _boundsRenderer.bounds);
+                // recursively call for child parts
+                foreach (var child in eventPart.children) {
+                    OnPartTransformed(child);
+                }
+            }
+        }
+
+        /// Called when a part is attached in the editor
+        protected void OnPartAttached(Part eventPart) {
+            if (this.part == eventPart) {
+                OnAttach();
+            }
+            else if (projectMultiple) {
+                UpdatePartTarget(eventPart, _boundsRenderer.bounds);
+                // recursively call for child parts
+                foreach (var child in eventPart.children) {
+                    OnPartAttached(child);
+                }
+            }
+        }
+
+        /// Called when a part is detached in the editor
+        protected void OnPartDetached(Part eventPart) {
+            if (this.part == eventPart) {
+                OnDetach();
+            }
+            else if (projectMultiple) {
+                _targets.Remove(eventPart);
+                // recursively call for child parts
+                foreach (var child in eventPart.children) {
+                    OnPartDetached(child);
+                }
+            }
+        }
+
+        /// Called when part `willDie` will be destroyed
         protected void OnPartWillDie(Part willDie) {
             if (willDie == part.parent) {
                 this.Log("Parent part about to be destroyed! Killing decal part.");
                 part.Die();
             }
+            else if (projectMultiple) {
+                _targets.Remove(willDie);
+            }
         }
 
+        /// Called when decal is attached to a new part
         protected virtual void OnAttach() {
             if (part.parent == null) {
                 this.LogError("Attach function called but part has no parent!");
@@ -377,10 +364,11 @@ namespace ConformalDecals {
             Camera.onPreCull += Render;
 
             UpdateMaterials();
+            UpdateProjection();
             UpdateTargets();
-            UpdateScale();
         }
 
+        /// Called when decal is detached from its parent part
         protected virtual void OnDetach() {
             _isAttached = false;
 
@@ -394,10 +382,216 @@ namespace ConformalDecals {
             Camera.onPreCull -= Render;
 
             UpdateMaterials();
-            UpdateScale();
+            UpdateProjection();
         }
 
-        protected void UpdateScale() {
+        // FUNCTIONS
+
+        /// Load any settings from the decal config
+        protected virtual void LoadDecal(ConfigNode node) {
+            // PARSE TRANSFORMS
+            decalFrontTransform = part.FindModelTransform(decalFront);
+            if (decalFrontTransform == null) throw new FormatException($"Could not find decalFront transform: '{decalFront}'.");
+
+            decalBackTransform = part.FindModelTransform(decalBack);
+            if (decalBackTransform == null) throw new FormatException($"Could not find decalBack transform: '{decalBack}'.");
+
+            decalModelTransform = part.FindModelTransform(decalModel);
+            if (decalModelTransform == null) throw new FormatException($"Could not find decalModel transform: '{decalModel}'.");
+
+            decalProjectorTransform = part.FindModelTransform(decalProjector);
+            if (decalProjectorTransform == null) throw new FormatException($"Could not find decalProjector transform: '{decalProjector}'.");
+
+            decalColliderTransform = part.FindModelTransform(decalCollider);
+            if (decalColliderTransform == null) throw new FormatException($"Could not find decalCollider transform: '{decalCollider}'.");
+
+            // SETUP BACK MATERIAL
+            if (updateBackScale) {
+                var backRenderer = decalBackTransform.GetComponent<MeshRenderer>();
+                if (backRenderer == null) {
+                    this.LogError($"Specified decalBack transform {decalBack} has no renderer attached! Setting updateBackScale to false.");
+                    updateBackScale = false;
+                }
+                else {
+                    backMaterial = backRenderer.material;
+                    if (backMaterial == null) {
+                        this.LogError($"Specified decalBack transform {decalBack} has a renderer but no material! Setting updateBackScale to false.");
+                        updateBackScale = false;
+                    }
+                    else {
+                        if (backTextureBaseScale == default) backTextureBaseScale = backMaterial.GetTextureScale(PropertyIDs._MainTex);
+                    }
+                }
+            }
+
+            // PARSE MATERIAL PROPERTIES
+            // set shader
+            materialProperties.SetShader(shader);
+            materialProperties.AddOrGetProperty<MaterialKeywordProperty>("DECAL_BASE_NORMAL").value = useBaseNormal;
+            materialProperties.Load(node);
+
+            // handle texture tiling parameters
+            var tileString = node.GetValue("tile");
+            if (!string.IsNullOrEmpty(tileString)) {
+                var tileValid = ParseExtensions.TryParseRect(tileString, out tileRect);
+                if (!tileValid) throw new FormatException($"Invalid rect value for tile '{tileString}'");
+            }
+
+            if (tileRect.x >= 0) {
+                materialProperties.UpdateTile(tileRect);
+            }
+            else if (tileIndex >= 0) {
+                materialProperties.UpdateTile(tileIndex, tileSize);
+            }
+            
+            // PARSE TARGETS
+            if (HighLogic.LoadedSceneIsFlight) {
+                foreach (var partTargetNode in node.GetNodes(ProjectionPartTarget.NodeName)) {
+                    try {
+                        var partTarget = new ProjectionPartTarget(partTargetNode, part.vessel, useBaseNormal);
+                        _targets.Add(partTarget.part, partTarget);
+                    }
+                    catch (Exception e) {
+                        this.LogWarning($"Encountered error while parsing part node: {e}");
+                    }
+
+                }
+            }
+        }
+
+        /// Setup decal by calling update functions relevent for the current situation
+        protected virtual void SetupDecal() {
+            if (HighLogic.LoadedSceneIsEditor) {
+                // Update tweakables in editor mode
+                UpdateTweakables();
+            }
+
+            if (HighLogic.LoadedSceneIsGame) {
+                UpdateAll();
+            }
+            else {
+                scale = defaultScale;
+                depth = defaultDepth;
+                opacity = defaultOpacity;
+                cutoff = defaultCutoff;
+                wear = defaultWear;
+
+                UpdateAll();
+
+                // QUEUE PART FOR ICON FIXING IN VAB
+                DecalIconFixer.QueuePart(part.name);
+            }
+        }
+
+        /// Update decal editor tweakables
+        protected virtual void UpdateTweakables() {
+            // setup tweakable fields
+            var scaleField = Fields[nameof(scale)];
+            var depthField = Fields[nameof(depth)];
+            var opacityField = Fields[nameof(opacity)];
+            var cutoffField = Fields[nameof(cutoff)];
+            var wearField = Fields[nameof(wear)];
+            var multiprojectField = Fields[nameof(projectMultiple)];
+
+            scaleField.guiActiveEditor = scaleAdjustable;
+            depthField.guiActiveEditor = depthAdjustable;
+            opacityField.guiActiveEditor = opacityAdjustable;
+            cutoffField.guiActiveEditor = cutoffAdjustable;
+            wearField.guiActiveEditor = useBaseNormal;
+
+            var steps = 20;
+
+            if (scaleAdjustable) {
+                var minValue = Mathf.Max(Mathf.Epsilon, scaleRange.x);
+                var maxValue = Mathf.Max(minValue, scaleRange.y);
+
+                var scaleEditor = (UI_FloatRange) scaleField.uiControlEditor;
+                scaleEditor.minValue = minValue;
+                scaleEditor.maxValue = maxValue;
+                scaleEditor.stepIncrement = 0.01f; //1cm
+                scaleEditor.onFieldChanged = OnProjectionTweakEvent;
+            }
+
+            if (depthAdjustable) {
+                var minValue = Mathf.Max(Mathf.Epsilon, depthRange.x);
+                var maxValue = Mathf.Max(minValue, depthRange.y);
+
+                var depthEditor = (UI_FloatRange) depthField.uiControlEditor;
+                depthEditor.minValue = minValue;
+                depthEditor.maxValue = maxValue;
+                depthEditor.stepIncrement = 0.01f; //1cm
+                depthEditor.onFieldChanged = OnProjectionTweakEvent;
+            }
+
+            if (opacityAdjustable) {
+                var minValue = Mathf.Max(0, opacityRange.x);
+                var maxValue = Mathf.Max(minValue, opacityRange.y);
+                maxValue = Mathf.Min(1, maxValue);
+
+                var opacityEditor = (UI_FloatRange) opacityField.uiControlEditor;
+                opacityEditor.minValue = minValue;
+                opacityEditor.maxValue = maxValue;
+                opacityEditor.stepIncrement = (maxValue - minValue) / steps;
+                opacityEditor.onFieldChanged = OnMaterialTweakEvent;
+            }
+
+            if (cutoffAdjustable) {
+                var minValue = Mathf.Max(0, cutoffRange.x);
+                var maxValue = Mathf.Max(minValue, cutoffRange.y);
+                maxValue = Mathf.Min(1, maxValue);
+
+                var cutoffEditor = (UI_FloatRange) cutoffField.uiControlEditor;
+                cutoffEditor.minValue = minValue;
+                cutoffEditor.maxValue = maxValue;
+                cutoffEditor.stepIncrement = (maxValue - minValue) / steps;
+                cutoffEditor.onFieldChanged = OnMaterialTweakEvent;
+            }
+
+            if (useBaseNormal) {
+                var minValue = Mathf.Max(0, wearRange.x);
+                var maxValue = Mathf.Max(minValue, wearRange.y);
+
+                var wearEditor = (UI_FloatRange) wearField.uiControlEditor;
+                wearEditor.minValue = minValue;
+                wearEditor.maxValue = maxValue;
+                wearEditor.stepIncrement = (maxValue - minValue) / steps;
+                wearEditor.onFieldChanged = OnMaterialTweakEvent;
+            }
+
+            var multiprojectEditor = (UI_Toggle) multiprojectField.uiControlEditor;
+            multiprojectEditor.onFieldChanged = OnProjectionTweakEvent;
+        }
+
+        /// Updates textures, materials, scale and targets
+        protected virtual void UpdateAll() {
+            UpdateTextures();
+            UpdateMaterials();
+            UpdateProjection();
+            UpdateTargets();
+        }
+
+        /// Update decal textures
+        protected virtual void UpdateTextures() { }
+
+        /// Update decal materials
+        protected virtual void UpdateMaterials() {
+            materialProperties.UpdateMaterials();
+            materialProperties.SetOpacity(opacity);
+            materialProperties.SetCutoff(cutoff);
+            if (useBaseNormal) {
+                materialProperties.SetWear(wear);
+            }
+
+            _decalMaterial = materialProperties.DecalMaterial;
+            _previewMaterial = materialProperties.PreviewMaterial;
+
+            if (!_isAttached) decalFrontTransform.GetComponent<MeshRenderer>().material = _previewMaterial;
+        }
+
+        /// Update decal scale and projection
+        protected void UpdateProjection() {
+
+            // Update scale and depth
             scale = Mathf.Max(0.01f, scale);
             depth = Mathf.Max(0.01f, depth);
             var aspectRatio = Mathf.Max(0.01f, materialProperties.AspectRatio);
@@ -437,11 +631,6 @@ namespace ConformalDecals {
                 _orthoMatrix[1, 3] = 0.5f;
 
                 decalProjectorTransform.localScale = new Vector3(size.x, size.y, depth);
-
-                // update projection
-                foreach (var target in _targets) {
-                    target.Project(_orthoMatrix, decalProjectorTransform, _boundsRenderer.bounds, useBaseNormal);
-                }
             }
             else {
                 // rescale preview model
@@ -454,129 +643,54 @@ namespace ConformalDecals {
             }
         }
 
-        protected virtual void UpdateMaterials() {
-            materialProperties.UpdateMaterials();
-            materialProperties.SetOpacity(opacity);
-            materialProperties.SetCutoff(cutoff);
-            if (useBaseNormal) {
-                materialProperties.SetWear(wear);
-            }
-
-            _decalMaterial = materialProperties.DecalMaterial;
-            _previewMaterial = materialProperties.PreviewMaterial;
-
-            if (!_isAttached) decalFrontTransform.GetComponent<MeshRenderer>().material = _previewMaterial;
-        }
-
+        /// Called when updating decal targets
         protected void UpdateTargets() {
-            if (_targets == null) {
-                _targets = new List<ProjectionTarget>();
+            if (!_isAttached) return;
+
+            var projectionBounds = _boundsRenderer.bounds;
+
+            // collect list of potential targets
+            IEnumerable<Part> targetParts;
+            if (projectMultiple) {
+                targetParts = HighLogic.LoadedSceneIsFlight ? part.vessel.parts : EditorLogic.fetch.ship.parts;
             }
             else {
-                _targets.Clear();
+                targetParts = new[] {part.parent};
             }
 
-            // find all valid renderers
-            var renderers = part.parent.FindModelComponents<MeshRenderer>();
-            foreach (var renderer in renderers) {
-                // skip disabled renderers
-                if (renderer.gameObject.activeInHierarchy == false) continue;
-
-                // skip blacklisted shaders
-                if (DecalConfig.IsBlacklisted(renderer.material.shader)) continue;
-
-                var meshFilter = renderer.GetComponent<MeshFilter>();
-                if (meshFilter == null) continue; // object has a meshRenderer with no filter, invalid
-                var mesh = meshFilter.mesh;
-                if (mesh == null) continue; // object has a null mesh, invalid
-
-                // create new ProjectionTarget to represent the renderer
-                var target = new ProjectionTarget(renderer, mesh);
-
-                // add the target to the list
-                _targets.Add(target);
+            foreach (var targetPart in targetParts) {
+                UpdatePartTarget(targetPart, projectionBounds);
             }
         }
 
-        protected virtual void UpdateTweakables() {
-            // setup tweakable fields
-            var scaleField = Fields[nameof(scale)];
-            var depthField = Fields[nameof(depth)];
-            var opacityField = Fields[nameof(opacity)];
-            var cutoffField = Fields[nameof(cutoff)];
-            var wearField = Fields[nameof(wear)];
+        protected void UpdatePartTarget(Part targetPart, Bounds projectionBounds) {
+            if (targetPart.GetComponent<ModuleConformalDecal>() != null) return; // skip other decals
 
-            scaleField.guiActiveEditor = scaleAdjustable;
-            depthField.guiActiveEditor = depthAdjustable;
-            opacityField.guiActiveEditor = opacityAdjustable;
-            cutoffField.guiActiveEditor = cutoffAdjustable;
-            wearField.guiActiveEditor = useBaseNormal;
+            this.Log($"Updating projection onto part {targetPart.name}");
 
-            var steps = 20;
+            if (!_targets.TryGetValue(targetPart, out var target)) {
+                var rendererList = targetPart.FindModelComponents<MeshRenderer>();
 
-            if (scaleAdjustable) {
-                var minValue = Mathf.Max(Mathf.Epsilon, scaleRange.x);
-                var maxValue = Mathf.Max(minValue, scaleRange.y);
-
-                var scaleEditor = (UI_FloatRange) scaleField.uiControlEditor;
-                scaleEditor.minValue = minValue;
-                scaleEditor.maxValue = maxValue;
-                scaleEditor.stepIncrement = 0.01f; //1cm
-                scaleEditor.onFieldChanged = OnSizeTweakEvent;
+                if (rendererList.Any(o => projectionBounds.Intersects(o.bounds))) {
+                    target = new ProjectionPartTarget(targetPart, useBaseNormal);
+                    _targets.Add(targetPart, target);
+                }
+                else {
+                    return;
+                }
             }
 
-            if (depthAdjustable) {
-                var minValue = Mathf.Max(Mathf.Epsilon, depthRange.x);
-                var maxValue = Mathf.Max(minValue, depthRange.y);
+            this.Log($"valid target: {targetPart.name}");
 
-                var depthEditor = (UI_FloatRange) depthField.uiControlEditor;
-                depthEditor.minValue = minValue;
-                depthEditor.maxValue = maxValue;
-                depthEditor.stepIncrement = 0.01f; //1cm
-                depthEditor.onFieldChanged = OnSizeTweakEvent;
-            }
-
-            if (opacityAdjustable) {
-                var minValue = Mathf.Max(0, opacityRange.x);
-                var maxValue = Mathf.Max(minValue, opacityRange.y);
-                maxValue = Mathf.Min(1, maxValue);
-
-                var opacityEditor = (UI_FloatRange) opacityField.uiControlEditor;
-                opacityEditor.minValue = minValue;
-                opacityEditor.maxValue = maxValue;
-                opacityEditor.stepIncrement = (maxValue - minValue) / steps;
-                opacityEditor.onFieldChanged = OnMaterialTweakEvent;
-            }
-
-            if (cutoffAdjustable) {
-                var minValue = Mathf.Max(0, cutoffRange.x);
-                var maxValue = Mathf.Max(minValue, cutoffRange.y);
-                maxValue = Mathf.Min(1, maxValue);
-
-                var cutoffEditor = (UI_FloatRange) cutoffField.uiControlEditor;
-                cutoffEditor.minValue = minValue;
-                cutoffEditor.maxValue = maxValue;
-                cutoffEditor.stepIncrement = (maxValue - minValue) / steps;
-                cutoffEditor.onFieldChanged = OnMaterialTweakEvent;
-            }
-
-            if (useBaseNormal) {
-                var minValue = Mathf.Max(0, wearRange.x);
-                var maxValue = Mathf.Max(minValue, wearRange.y);
-
-                var wearEditor = (UI_FloatRange) wearField.uiControlEditor;
-                wearEditor.minValue = minValue;
-                wearEditor.maxValue = maxValue;
-                wearEditor.stepIncrement = (maxValue - minValue) / steps;
-                wearEditor.onFieldChanged = OnMaterialTweakEvent;
-            }
+            target.Project(_orthoMatrix, decalProjectorTransform, projectionBounds);
         }
 
+        /// Render the decal
         public void Render(Camera camera) {
             if (!_isAttached) return;
 
             // render on each target object
-            foreach (var target in _targets) {
+            foreach (var target in _targets.Values) {
                 target.Render(_decalMaterial, part.mpb, camera);
             }
         }

Source/ConformalDecals/ModuleConformalFlag.cs

@@ -1,4 +1,6 @@
+using ConformalDecals.MaterialProperties;
 using ConformalDecals.Util;
+using UniLinq;
 using UnityEngine;
 
 namespace ConformalDecals {
@@ -9,6 +11,8 @@ namespace ConformalDecals {
 
         [KSPField(isPersistant = true)] public bool useCustomFlag;
 
+        private MaterialTextureProperty _flagTextureProperty;
+
         public string MissionFlagUrl {
             get {
                 if (HighLogic.LoadedSceneIsEditor) {
@@ -23,17 +27,6 @@ namespace ConformalDecals {
             }
         }
 
-        public override void OnLoad(ConfigNode node) {
-            base.OnLoad(node);
-
-            if (useCustomFlag) {
-                SetFlag(flagUrl);
-            }
-            else {
-                SetFlag(MissionFlagUrl);
-            }
-        }
-
         public override void OnStart(StartState state) {
             base.OnStart(state);
 
@@ -44,17 +37,10 @@ namespace ConformalDecals {
             if (HighLogic.LoadedSceneIsEditor) {
                 Events[nameof(ResetFlag)].guiActiveEditor = useCustomFlag;
             }
-
-            if (useCustomFlag) {
-                SetFlag(flagUrl);
-            }
-            else {
-                SetFlag(MissionFlagUrl);
-            }
         }
 
         public override void OnDestroy() {
-            GameEvents.onMissionFlagSelect.Remove(SetFlag);
+            GameEvents.onMissionFlagSelect.Remove(OnEditorFlagSelected);
             base.OnDestroy();
         }
 
@@ -66,44 +52,45 @@ namespace ConformalDecals {
 
         [KSPEvent(guiActive = false, guiActiveEditor = true, guiName = "#LOC_ConformalDecals_gui-reset-flag")]
         public void ResetFlag() {
-            SetFlag(MissionFlagUrl);
-            SetFlagSymmetryCounterparts(MissionFlagUrl);
-
-            useCustomFlag = false;
             Events[nameof(ResetFlag)].guiActiveEditor = false;
-        }
-
-        private void OnCustomFlagSelected(FlagBrowser.FlagEntry newFlagEntry) {
-            SetFlag(newFlagEntry.textureInfo.name);
-            SetFlagSymmetryCounterparts(newFlagEntry.textureInfo.name);
-
-            useCustomFlag = true;
-            Events[nameof(ResetFlag)].guiActiveEditor = true;
-        }
-
-        private void OnEditorFlagSelected(string newFlagUrl) {
-            if (!useCustomFlag) {
-                SetFlag(newFlagUrl);
-                SetFlagSymmetryCounterparts(newFlagUrl);
+            flagUrl = MissionFlagUrl;
+            useCustomFlag = false;
+            UpdateAll();
+            foreach (var decal in part.symmetryCounterparts.Select(o => o.GetComponent<ModuleConformalFlag>())) {
+                decal.Events[nameof(ResetFlag)].guiActiveEditor = false;
+                decal.flagUrl = flagUrl;
+                decal.useCustomFlag = false;
+                decal.UpdateAll();
             }
         }
 
-        private void SetFlag(string newFlagUrl) {
-            this.Log($"Loading flag texture '{newFlagUrl}'.");
+        private void OnCustomFlagSelected(FlagBrowser.FlagEntry newFlagEntry) {
+            Events[nameof(ResetFlag)].guiActiveEditor = true;
+            flagUrl = newFlagEntry.textureInfo.name;
+            useCustomFlag = true;
+            UpdateAll();
 
-            flagUrl = newFlagUrl;
-            materialProperties.AddOrGetTextureProperty("_Decal", true).TextureUrl = newFlagUrl;
-
-            UpdateMaterials();
-            UpdateScale();
+            foreach (var decal in part.symmetryCounterparts.Select(o => o.GetComponent<ModuleConformalFlag>())) {
+                decal.Events[nameof(ResetFlag)].guiActiveEditor = true;
+                decal.flagUrl = flagUrl;
+                decal.useCustomFlag = true;
+                decal.UpdateAll();
+            }
         }
 
-        private void SetFlagSymmetryCounterparts(string newFlagUrl) {
-            foreach (var counterpart in part.symmetryCounterparts) {
-                var decal = counterpart.GetComponent<ModuleConformalFlag>();
+        private void OnEditorFlagSelected(string newFlagUrl) {
+            if (!useCustomFlag) UpdateAll();
+        }
 
-                decal.SetFlag(newFlagUrl);
-                decal.useCustomFlag = useCustomFlag;
+        protected override void UpdateTextures() {
+            _flagTextureProperty ??= materialProperties.AddOrGetTextureProperty("_Decal", true);
+
+            base.UpdateTextures();
+            if (useCustomFlag) {
+                _flagTextureProperty.TextureUrl = flagUrl;
+            }
+            else {
+                _flagTextureProperty.TextureUrl = MissionFlagUrl;
             }
         }
     }

Source/ConformalDecals/ModuleConformalText.cs

@@ -5,6 +5,7 @@ using ConformalDecals.Text;
 using ConformalDecals.UI;
 using ConformalDecals.Util;
 using TMPro;
+using UniLinq;
 using UnityEngine;
 
 namespace ConformalDecals {
@@ -89,41 +90,11 @@ namespace ConformalDecals {
         private MaterialColorProperty   _outlineColorProperty;
         private MaterialFloatProperty   _outlineWidthProperty;
 
-        private DecalText     _currentText;
+        private DecalText _currentText;
 
-        public override void OnLoad(ConfigNode node) {
-            base.OnLoad(node);
-
-            string textRaw = "";
-            if (ParseUtil.ParseStringIndirect(ref textRaw, node, "text")) {
-                text = WebUtility.UrlDecode(textRaw);
-            }
-
-            string fontName = "";
-            if (ParseUtil.ParseStringIndirect(ref fontName, node, "fontName")) {
-                font = DecalConfig.GetFont(fontName);
-            }
-            else if (font == null) font = DecalConfig.GetFont("Calibri SDF");
-
-            int styleInt = 0;
-            if (ParseUtil.ParseIntIndirect(ref styleInt, node, "style")) {
-                style = (FontStyles) styleInt;
-            }
-
-            ParseUtil.ParseColor32Indirect(ref fillColor, node, "fillColor");
-            ParseUtil.ParseColor32Indirect(ref outlineColor, node, "outlineColor");
-
-            if (HighLogic.LoadedSceneIsGame) {
-                // For some reason, rendering doesnt work right on the first frame a scene is loaded
-                // So delay any rendering until the next frame when called in OnLoad
-                // This is probably a problem with Unity, not KSP
-                StartCoroutine(UpdateTextLate());
-            }
-            else {
-                UpdateText();
-            }
-        }
+        // EVENTS
 
+        /// <inheritdoc />
         public override void OnSave(ConfigNode node) {
             node.AddValue("text", WebUtility.UrlEncode(text));
             node.AddValue("fontName", font.Name);
@@ -147,13 +118,23 @@ namespace ConformalDecals {
         }
 
         public void OnTextUpdate(string newText, DecalFont newFont, FontStyles newStyle, bool newVertical, float newLineSpacing, float newCharSpacing) {
-            this.text = newText;
-            this.font = newFont;
-            this.style = newStyle;
-            this.vertical = newVertical;
-            this.lineSpacing = newLineSpacing;
-            this.charSpacing = newCharSpacing;
-            UpdateTextRecursive();
+            text = newText;
+            font = newFont;
+            style = newStyle;
+            vertical = newVertical;
+            lineSpacing = newLineSpacing;
+            charSpacing = newCharSpacing;
+            UpdateAll();
+
+            foreach (var decal in part.symmetryCounterparts.Select(o => o.GetComponent<ModuleConformalText>())) {
+                decal.text = newText;
+                decal.font = newFont;
+                decal.style = newStyle;
+                decal.vertical = newVertical;
+                decal.lineSpacing = newLineSpacing;
+                decal.charSpacing = newCharSpacing;
+                decal.UpdateAll();
+            }
         }
 
         public void OnFillColorUpdate(Color rgb, Util.ColorHSV hsv) {
@@ -240,48 +221,70 @@ namespace ConformalDecals {
             base.OnDetach();
         }
 
-        private void UpdateTextRecursive() {
-            UpdateText();
+        // FUNCTIONS
 
-            foreach (var counterpart in part.symmetryCounterparts) {
-                var decal = counterpart.GetComponent<ModuleConformalText>();
-                decal.text = text;
-                decal.font = font;
-                decal.style = style;
-                decal.vertical = vertical;
-                decal.charSpacing = charSpacing;
-                decal.lineSpacing = lineSpacing;
+        protected override void LoadDecal(ConfigNode node) {
+            base.LoadDecal(node);
 
-                decal._currentText = _currentText;
-                decal.UpdateText();
+            string textRaw = "";
+            if (ParseUtil.ParseStringIndirect(ref textRaw, node, "text")) {
+                text = WebUtility.UrlDecode(textRaw);
+            }
+
+            string fontName = "";
+            if (ParseUtil.ParseStringIndirect(ref fontName, node, "fontName")) {
+                font = DecalConfig.GetFont(fontName);
+            }
+            else if (font == null) font = DecalConfig.GetFont("Calibri SDF");
+
+            int styleInt = 0;
+            if (ParseUtil.ParseIntIndirect(ref styleInt, node, "style")) {
+                style = (FontStyles) styleInt;
+            }
+
+            ParseUtil.ParseColor32Indirect(ref fillColor, node, "fillColor");
+            ParseUtil.ParseColor32Indirect(ref outlineColor, node, "outlineColor");
+        }
+
+        protected override void SetupDecal() {
+            if (HighLogic.LoadedSceneIsEditor) {
+                // Update tweakables in editor mode
+                UpdateTweakables();
+            }
+
+            if (HighLogic.LoadedSceneIsGame) {
+                // For some reason text rendering fails on the first frame of a scene, so this is my workaround
+                StartCoroutine(UpdateTextLate());
+            }
+            else {
+                scale = defaultScale;
+                depth = defaultDepth;
+                opacity = defaultOpacity;
+                cutoff = defaultCutoff;
+                wear = defaultWear;
+
+                UpdateTextures();
+                UpdateMaterials();
+                UpdateProjection();
+
+                // QUEUE PART FOR ICON FIXING IN VAB
+                DecalIconFixer.QueuePart(part.name);
             }
         }
 
         private IEnumerator UpdateTextLate() {
             yield return null;
-            UpdateText();
+            UpdateAll();
         }
 
-        private void UpdateText() {
+        protected override void UpdateTextures() {
             // Render text
             var newText = new DecalText(text, font, style, vertical, lineSpacing, charSpacing);
             var output = TextRenderer.UpdateText(_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() {

Source/ConformalDecals/ProjectionMeshTarget.cs

@@ -0,0 +1,167 @@
+using System;
+using System.Text;
+using ConformalDecals.Util;
+using UniLinq;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace ConformalDecals {
+    public class ProjectionMeshTarget : IProjectionTarget {
+        public const string NodeName = "MESH_TARGET";
+        
+        // enabled flag
+        public bool enabled;
+
+        // Target object data
+        public readonly Transform    target;
+        public readonly Transform    root;
+        public readonly Mesh         mesh;
+        public readonly MeshRenderer renderer;
+
+        // Projection data
+        private Matrix4x4 _decalMatrix;
+        private Vector3   _decalNormal;
+        private Vector3   _decalTangent;
+
+        // property block
+        private readonly MaterialPropertyBlock _decalMPB;
+
+        public ProjectionMeshTarget(Transform target, Transform root, MeshRenderer renderer, Mesh mesh, bool useBaseNormal) {
+            this.root = root;
+            this.target = target;
+            this.renderer = renderer;
+            this.mesh = mesh;
+            _decalMPB = new MaterialPropertyBlock();
+
+            SetNormalMap(renderer.sharedMaterial, useBaseNormal);
+        }
+
+        public ProjectionMeshTarget(ConfigNode node, Transform root, bool useBaseNormal) {
+            if (node == null) throw new ArgumentNullException(nameof(node));
+            if (root == null) throw new ArgumentNullException(nameof(root));
+            enabled = true;
+
+            var targetPath = ParseUtil.ParseString(node, "targetPath");
+            var targetName = ParseUtil.ParseString(node, "targetName");
+
+            _decalMatrix = ParseUtil.ParseMatrix4x4(node, "decalMatrix");
+            _decalNormal = ParseUtil.ParseVector3(node, "decalNormal");
+            _decalTangent = ParseUtil.ParseVector3(node, "decalTangent");
+            _decalMPB = new MaterialPropertyBlock();
+
+            target = LoadTransformPath(targetPath, root);
+            if (target.name != targetName) throw new FormatException("Target name does not match");
+
+            renderer = target.GetComponent<MeshRenderer>();
+            var filter = target.GetComponent<MeshFilter>();
+
+            if (!ValidateTarget(target, renderer, filter)) throw new FormatException("Invalid target");
+
+            mesh = filter.sharedMesh;
+
+            SetNormalMap(renderer.sharedMaterial, useBaseNormal);
+            
+            _decalMPB.SetMatrix(DecalPropertyIDs._ProjectionMatrix, _decalMatrix);
+            _decalMPB.SetVector(DecalPropertyIDs._DecalNormal, _decalNormal);
+            _decalMPB.SetVector(DecalPropertyIDs._DecalTangent, _decalTangent); 
+        }
+
+        private void SetNormalMap(Material targetMaterial, bool useBaseNormal) {
+            if (useBaseNormal && targetMaterial.HasProperty(DecalPropertyIDs._BumpMap)) {
+                _decalMPB.SetTexture(DecalPropertyIDs._BumpMap, targetMaterial.GetTexture(DecalPropertyIDs._BumpMap));
+
+                var normalScale = targetMaterial.GetTextureScale(DecalPropertyIDs._BumpMap);
+                var normalOffset = targetMaterial.GetTextureOffset(DecalPropertyIDs._BumpMap);
+
+                _decalMPB.SetVector(DecalPropertyIDs._BumpMap_ST, new Vector4(normalScale.x, normalScale.y, normalOffset.x, normalOffset.y));
+            }
+            else {
+                _decalMPB.SetTexture(DecalPropertyIDs._BumpMap, DecalConfig.BlankNormal);
+            }
+        }
+
+        public bool Project(Matrix4x4 orthoMatrix, Transform projector, Bounds projectionBounds) {
+            if (projectionBounds.Intersects(renderer.bounds)) {
+                enabled = true;
+                
+                var projectorToTargetMatrix = target.worldToLocalMatrix * projector.localToWorldMatrix;
+
+                _decalMatrix = orthoMatrix * projectorToTargetMatrix.inverse;
+                _decalNormal = projectorToTargetMatrix.MultiplyVector(Vector3.back).normalized;
+                _decalTangent = projectorToTargetMatrix.MultiplyVector(Vector3.right).normalized;
+
+                _decalMPB.SetMatrix(DecalPropertyIDs._ProjectionMatrix, _decalMatrix);
+                _decalMPB.SetVector(DecalPropertyIDs._DecalNormal, _decalNormal);
+                _decalMPB.SetVector(DecalPropertyIDs._DecalTangent, _decalTangent);
+            }
+            else {
+                enabled = false;
+            }
+
+            return enabled;
+        }
+
+        public void Render(Material decalMaterial, MaterialPropertyBlock partMPB, Camera camera) {
+            if (!enabled) return;
+
+            _decalMPB.SetFloat(PropertyIDs._RimFalloff, partMPB.GetFloat(PropertyIDs._RimFalloff));
+            _decalMPB.SetColor(PropertyIDs._RimColor, partMPB.GetColor(PropertyIDs._RimColor));
+
+            Graphics.DrawMesh(mesh, target.localToWorldMatrix, decalMaterial, 0, camera, 0, _decalMPB, ShadowCastingMode.Off, true);
+        }
+
+        public ConfigNode Save() {
+            var node = new ConfigNode(NodeName);
+            node.AddValue("decalMatrix", _decalMatrix);
+            node.AddValue("decalNormal", _decalNormal);
+            node.AddValue("decalTangent", _decalTangent);
+            node.AddValue("targetPath", SaveTransformPath(target, root)); // used to find the target transform
+            node.AddValue("targetName", target.name); // used to validate the mesh has not changed since last load
+
+            return node;
+        }
+
+
+        public static bool ValidateTarget(Transform target, MeshRenderer renderer, MeshFilter filter) {
+            if (renderer == null) return false;
+            if (filter == null) return false;
+            if (!target.gameObject.activeInHierarchy) return false;
+
+            var material = renderer.material;
+            if (material == null) return false;
+            if (DecalConfig.IsBlacklisted(material.shader)) return false;
+
+            if (filter.sharedMesh == null) return false;
+
+            return true;
+        }
+
+        private static string SaveTransformPath(Transform leaf, Transform root) {
+            var builder = new StringBuilder($"{leaf.GetSiblingIndex()}");
+            var current = leaf.parent;
+
+            while (current != root) {
+                builder.Insert(0, "/");
+                builder.Insert(0, current.GetSiblingIndex());
+                current = current.parent;
+                if (current == null) throw new FormatException("Leaf does not exist as a child of root");
+            }
+
+            return builder.ToString();
+        }
+
+        private static Transform LoadTransformPath(string path, Transform root) {
+            var indices = path.Split('/').Select(int.Parse);
+            var current = root;
+            Logging.Log($"root transform: {current.name}");
+
+            foreach (var index in indices) {
+                if (index > current.childCount) throw new FormatException("Child index path is invalid");
+                current = current.GetChild(index);
+                Logging.Log($"found child {current.name} at index {index}");
+            }
+
+            return current;
+        }
+    }
+}

Source/ConformalDecals/ProjectionPartTarget.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using ConformalDecals.Util;
+using UnityEngine;
+
+namespace ConformalDecals {
+    public class ProjectionPartTarget : IProjectionTarget {
+        public const string NodeName = "PART_TARGET";
+
+        // enabled flag
+        public bool enabled;
+
+        // locked flag, to prevent re-projection of loaded targets
+        public readonly bool locked;
+
+        public readonly Part                       part;
+        public readonly List<ProjectionMeshTarget> meshTargets = new List<ProjectionMeshTarget>();
+
+
+        public ProjectionPartTarget(Part part, bool useBaseNormal) {
+            this.part = part;
+            locked = false;
+
+            foreach (var renderer in part.FindModelComponents<MeshRenderer>()) {
+                var target = renderer.transform;
+                var filter = target.GetComponent<MeshFilter>();
+
+                // check if the target has any missing data
+                if (!ProjectionMeshTarget.ValidateTarget(target, renderer, filter)) continue;
+
+                // create new ProjectionTarget to represent the renderer
+                var projectionTarget = new ProjectionMeshTarget(target, part.transform, renderer, filter.sharedMesh, useBaseNormal);
+
+                // add the target to the list
+                meshTargets.Add(projectionTarget);
+            }
+        }
+
+        public ProjectionPartTarget(ConfigNode node, Vessel vessel, bool useBaseNormal) {
+            if (node == null) throw new ArgumentNullException(nameof(node));
+            locked = true;
+            enabled = true;
+
+            var flightID = ParseUtil.ParseUint(node, "part");
+
+            part = vessel[flightID];
+            if (part == null) throw new IndexOutOfRangeException("Vessel returned null part, part must be destroyed or detached");
+            var root = part.transform;
+
+            foreach (var meshTargetNode in node.GetNodes(ProjectionMeshTarget.NodeName)) {
+                meshTargets.Add(new ProjectionMeshTarget(meshTargetNode, root, useBaseNormal));
+            }
+
+            Logging.Log($"Loaded target for part {part.name}");
+        }
+
+        public bool Project(Matrix4x4 orthoMatrix, Transform projector, Bounds projectionBounds) {
+            if (locked) return true; // dont overwrite saved targets in flight mode
+            enabled = false;
+            foreach (var meshTarget in meshTargets) {
+                enabled |= meshTarget.Project(orthoMatrix, projector, projectionBounds);
+            }
+
+            return enabled;
+        }
+
+        public void Render(Material decalMaterial, MaterialPropertyBlock partMPB, Camera camera) {
+            foreach (var target in meshTargets) {
+                target.Render(decalMaterial, partMPB, camera);
+            }
+        }
+
+        public ConfigNode Save() {
+            var node = new ConfigNode(NodeName);
+            node.AddValue("part", part.flightID);
+            foreach (var meshTarget in meshTargets) {
+                if (meshTarget.enabled) node.AddNode(meshTarget.Save());
+            }
+
+            Logging.Log($"Saved target for part {part.name}");
+
+            return node;
+        }
+    }
+}

Source/ConformalDecals/ProjectionTarget.cs

@@ -1,68 +0,0 @@
-using UnityEngine;
-using UnityEngine.Rendering;
-
-namespace ConformalDecals {
-    public class ProjectionTarget {
-        // Target object data
-        public readonly Transform target;
-
-        private readonly Renderer _targetRenderer;
-        private readonly Mesh     _targetMesh;
-        private          bool     _projectionEnabled;
-
-        // property block
-        private readonly MaterialPropertyBlock _decalMPB;
-
-        public ProjectionTarget(MeshRenderer targetRenderer, Mesh targetMesh) {
-            target = targetRenderer.transform;
-            _targetRenderer = targetRenderer;
-            _targetMesh = targetMesh;
-            _decalMPB = new MaterialPropertyBlock();
-        }
-
-        public void Project(Matrix4x4 orthoMatrix, Transform projector, Bounds projectorBounds, bool useBaseNormal) {
-
-            if (projectorBounds.Intersects(_targetRenderer.bounds)) {
-                _projectionEnabled = true;
-                var targetMaterial = _targetRenderer.sharedMaterial;
-                var projectorToTargetMatrix = target.worldToLocalMatrix * projector.localToWorldMatrix;
-
-                var projectionMatrix = orthoMatrix * projectorToTargetMatrix.inverse;
-                var decalNormal = projectorToTargetMatrix.MultiplyVector(Vector3.back).normalized;
-                var decalTangent = projectorToTargetMatrix.MultiplyVector(Vector3.right).normalized;
-
-                _decalMPB.SetMatrix(DecalPropertyIDs._ProjectionMatrix, projectionMatrix);
-                _decalMPB.SetVector(DecalPropertyIDs._DecalNormal, decalNormal);
-                _decalMPB.SetVector(DecalPropertyIDs._DecalTangent, decalTangent);
-
-                if (useBaseNormal && targetMaterial.HasProperty(DecalPropertyIDs._BumpMap)) {
-                    _decalMPB.SetTexture(DecalPropertyIDs._BumpMap, targetMaterial.GetTexture(DecalPropertyIDs._BumpMap));
-
-                    var normalScale = targetMaterial.GetTextureScale(DecalPropertyIDs._BumpMap);
-                    var normalOffset = targetMaterial.GetTextureOffset(DecalPropertyIDs._BumpMap);
-
-                    _decalMPB.SetVector(DecalPropertyIDs._BumpMap_ST, new Vector4(normalScale.x, normalScale.y, normalOffset.x, normalOffset.y));
-                }
-                else {
-                    _decalMPB.SetTexture(DecalPropertyIDs._BumpMap, DecalConfig.BlankNormal);
-                }
-            }
-            else {
-                _projectionEnabled = false;
-            }
-        }
-
-        public bool Render(Material decalMaterial, MaterialPropertyBlock partMPB, Camera camera) {
-            if (_projectionEnabled) {
-                _decalMPB.SetFloat(PropertyIDs._RimFalloff, partMPB.GetFloat(PropertyIDs._RimFalloff));
-                _decalMPB.SetColor(PropertyIDs._RimColor, partMPB.GetColor(PropertyIDs._RimColor));
-
-                Graphics.DrawMesh(_targetMesh, target.localToWorldMatrix, decalMaterial, 0, camera, 0, _decalMPB, ShadowCastingMode.Off, true);
-
-                return true;
-            }
-
-            return false;
-        }
-    }
-}

Source/ConformalDecals/Text/DecalFont.cs

@@ -46,21 +46,25 @@ namespace ConformalDecals.Text {
         public bool SmallCapsMask => (_fontStyleMask & FontStyles.SmallCaps) != 0;
 
 
-        public DecalFont(ConfigNode node, IEnumerable<TMP_FontAsset> fontAssets) {
+        public static DecalFont Parse(ConfigNode node, IEnumerable<TMP_FontAsset> fontAssets) {
             if (node == null) throw new ArgumentNullException(nameof(node));
             if (fontAssets == null) throw new ArgumentNullException(nameof(fontAssets));
 
+            var font = ScriptableObject.CreateInstance<DecalFont>();
+
             var name = ParseUtil.ParseString(node, "name");
-            _fontAsset = fontAssets.First(o => o.name == name);
-            if (FontAsset == null) {
+            var 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);
-        }
+            font._fontAsset = fontAsset;
+            font._title = ParseUtil.ParseString(node, "title", true, name);
+            font._fontStyle = (FontStyles) ParseUtil.ParseInt(node, "style", true);
+            font._fontStyleMask = (FontStyles) ParseUtil.ParseInt(node, "styleMask", true);
 
+            return font;
+        }
 
         public void SetupSample(TMP_Text tmp) {
             if (tmp == null) throw new ArgumentNullException(nameof(tmp));

Source/ConformalDecals/Text/FontLoader.cs

@@ -1,6 +1,5 @@
 using System.IO;
 using System.Collections;
-using System.Collections.Generic;
 using ConformalDecals.Util;
 using TMPro;
 using UniLinq;

Source/ConformalDecals/Util/ParseUtil.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Reflection;
+using UniLinq;
 using UnityEngine;
 
 namespace ConformalDecals.Util {
@@ -74,6 +75,14 @@ namespace ConformalDecals.Util {
             return ParseValueIndirect(ref value, node, valueName, int.TryParse);
         }
 
+        public static uint ParseUint(ConfigNode node, string valueName, bool isOptional = false, uint defaultValue = 0) {
+            return ParseValue(node, valueName, uint.TryParse, isOptional, defaultValue);
+        }
+
+        public static bool ParseUintIndirect(ref uint value, ConfigNode node, string valueName) {
+            return ParseValueIndirect(ref value, node, valueName, uint.TryParse);
+        }
+
         public static Color32 ParseColor32(ConfigNode node, string valueName, bool isOptional = false, Color32 defaultValue = default) {
             return ParseValue(node, valueName, TryParseColor32, isOptional, defaultValue);
         }
@@ -106,6 +115,15 @@ namespace ConformalDecals.Util {
             return ParseValueIndirect(ref value, node, valueName, ParseExtensions.TryParseVector3);
         }
 
+        public static Matrix4x4 ParseMatrix4x4(ConfigNode node, string valueName, bool isOptional = false, Matrix4x4 defaultValue = default) {
+            return ParseValue(node, valueName, ParseUtil.TryParseMatrix4x4, isOptional, defaultValue);
+        }
+
+        public static bool ParseMatrix4x4Indirect(ref Matrix4x4 value, ConfigNode node, string valueName) {
+            return ParseValueIndirect(ref value, node, valueName, ParseUtil.TryParseMatrix4x4);
+
+        }
+
         public static T ParseValue<T>(ConfigNode node, string valueName, TryParseDelegate<T> tryParse, bool isOptional = false, T defaultValue = default) {
             string valueString = node.GetValue(valueName);
 
@@ -145,6 +163,26 @@ namespace ConformalDecals.Util {
             throw new FormatException($"Improperly formatted {typeof(T)} value for {valueName} : '{valueString}");
         }
 
+        public static bool TryParseMatrix4x4(string valueString, out Matrix4x4 value) {
+            value = new Matrix4x4();
+
+            var split = valueString.Split(Separator, StringSplitOptions.RemoveEmptyEntries);
+            for (int i = 0; i < split.Length; i++) {
+                split[i] = split[i].Trim();
+            }
+
+            if (split.Length != 16) return false;
+            int index = 0;
+            for (int row = 0; row < 4; row++) {
+                for (int col = 0; col < 4; col++) {
+                    if (!float.TryParse(split[index], out float component)) return false;
+                    value[row, col] = component;
+                }
+            }
+
+            return true;
+        }
+
         public static bool TryParseHexColor(string valueString, out Color32 value) {
             value = new Color32(0, 0, 0, byte.MaxValue);