Various dead-end attempts at font loading and rendering
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PART
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{
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name = conformaldecals-text
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module = Part
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author = Andrew Cassidy
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MODEL
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{
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model = ConformalDecals/Assets/decal-blank
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scale = 1.0, 1.0, 1.0
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}
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rescaleFactor = 1
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// Attachment
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attachRules = 1,1,0,0,1
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node_attach = 0.0, 0.0, 0.1, 0.0, 0.0, -1.0
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// Tech
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TechRequired = start
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// Info
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cost = 75
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category = Structural
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// CDL-F Flag Decal
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title = Conformal Text
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// Peel-N-Stik Adhesive Decals
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manufacturer = #LOC_ConformalDecals_agent-peel-n-stick_title
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// A simple switchable flag. Can either use the mission flag or select a specific flag to use.
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description = #LOC_ConformalDecals_flag-description
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// conformal decal sticker flag
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tags = #LOC_ConformalDecals_flag-tags
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bulkheadProfiles = srf
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// Parameters
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mass = 0.0005
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dragModel = NONE
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angularDrag = 0.0
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crashTolerance = 10
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maxTemp = 2000
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breakingForce = 350
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breakingTorque = 150
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physicalSignificance = NONE
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MODULE
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{
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name = ModuleConformalText
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useBaseNormal = true
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defaultDepth = 0.2
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defaultCutoff = 0
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}
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}
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using ConformalDecals.Util;
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using TMPro;
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using UnityEngine;
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namespace ConformalDecals {
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public class ModuleConformalText: ModuleConformalDecal {
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private const string DefaultFlag = "Squad/Flags/default";
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[KSPField(isPersistant = true)] public string text = "Hello World!";
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public override void OnLoad(ConfigNode node) {
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base.OnLoad(node);
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SetText(text);
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}
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public override void OnStart(StartState state) {
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base.OnStart(state);
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SetText(text);
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}
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private void SetText(string newText) {
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if (!HighLogic.LoadedSceneIsEditor) return;
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this.Log("Rendering text for part");
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var fonts = Resources.FindObjectsOfTypeAll<TMP_FontAsset>();
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foreach (var font in fonts) {
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this.Log($"Font: {font.name}");
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foreach (var fallback in font.fallbackFontAssets) {
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this.Log($" Fallback: {fallback.name}");
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}
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}
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materialProperties.AddOrGetTextureProperty("_Decal", true).Texture = TextRenderer.RenderToTexture(fonts[0], newText);
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UpdateMaterials();
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}
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}
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}
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using UnityEngine;
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namespace ConformalDecals.Text {
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public class DecalFont : ScriptableObject {
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[SerializeField] public string foo1;
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[SerializeField] public string foo2;
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}
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}
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using System.IO;
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using System.Collections;
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using System.Collections.Generic;
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using TMPro;
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using UnityEngine;
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namespace ConformalDecals.Text {
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[DatabaseLoaderAttrib(new[] {"kspfont"})]
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public class FontLoader : DatabaseLoader<GameDatabase.TextureInfo> {
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public static List<TMP_FontAsset> fonts;
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public override IEnumerator Load(UrlDir.UrlFile urlFile, FileInfo fileInfo) {
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fonts ??= new List<TMP_FontAsset>();
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Debug.Log($"[ConformalDecals] '{urlFile.fullPath}'");
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var bundle = AssetBundle.LoadFromFile(urlFile.fullPath);
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if (!bundle) {
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Debug.Log($"[ConformalDecals] could not load font asset {urlFile.fullPath}");
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}
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else {
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var loadedFoo = bundle.LoadAllAssets<DecalFont>();
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Debug.Log(loadedFoo[0].foo1);
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Debug.Log(loadedFoo[0].foo2);
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var loadedFonts = bundle.LoadAllAssets<TMP_FontAsset>();
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foreach (var font in loadedFonts) {
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Debug.Log($"[ConformalDecals] adding font {font.name}" );
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fonts.Add(font);
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Debug.Log($"ConformalDecals] isReadable: {font.atlas.isReadable}");
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}
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}
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yield break;
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}
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}
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}
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using System;
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using ConformalDecals.Util;
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using TMPro;
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using UnityEngine;
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namespace ConformalDecals {
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public class TextRenderer {
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private struct GlyphInfo {
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public TMP_Glyph glyph;
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public Vector2Int size;
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public Vector2Int position;
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public int fontIndex;
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public bool needsResample;
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}
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private struct FontInfo {
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public TMP_FontAsset font;
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public Texture2D fontAtlas;
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public Color32[] fontAtlasColors;
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}
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public static Texture2D RenderToTexture(TMP_FontAsset font, string text) {
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Debug.Log($"Rendering text: {text}");
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var charArray = text.ToCharArray();
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var glyphInfoArray = new GlyphInfo[charArray.Length];
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var fontInfoArray = new FontInfo[charArray.Length];
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var baseScale = font.fontInfo.Scale;
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var padding = (int) font.fontInfo.Padding;
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var ascender = (int) font.fontInfo.Ascender;
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var descender = (int) font.fontInfo.Descender;
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var baseline = (int) baseScale * (descender + padding);
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Debug.Log($"baseline: {baseline}");
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Debug.Log($"ascender: {ascender}");
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Debug.Log($"descender: {descender}");
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Debug.Log($"baseScale: {baseScale}");
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fontInfoArray[0].font = font;
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int xAdvance = 0;
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for (var i = 0; i < charArray.Length; i++) {
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var glyphFont = TMP_FontUtilities.SearchForGlyph(font, charArray[i], out var glyph);
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if (glyphFont == font) {
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glyphInfoArray[i].fontIndex = 0;
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}
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else {
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for (int f = 1; i < charArray.Length; i++) {
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if (fontInfoArray[f].font == null) {
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fontInfoArray[f].font = glyphFont;
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glyphInfoArray[i].fontIndex = f;
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break;
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}
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if (fontInfoArray[f].font == glyphFont) {
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glyphInfoArray[i].fontIndex = f;
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break;
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}
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}
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}
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Debug.Log($"getting font info for character: '{charArray[i]}'");
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Debug.Log($"character font: {glyphFont.name}");
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glyphInfoArray[i].glyph = glyph;
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glyphInfoArray[i].needsResample = false;
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float elementScale = glyph.scale;
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if (glyphFont == font) {
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if (!Mathf.Approximately(elementScale, 1)) {
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glyphInfoArray[i].needsResample = true;
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}
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elementScale *= baseScale;
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}
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else {
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var fontScale = glyphFont.fontInfo.Scale / glyphFont.fontInfo.PointSize;
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if (!Mathf.Approximately(fontScale, baseScale)) {
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glyphInfoArray[i].needsResample = true;
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}
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elementScale *= fontScale;
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}
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Debug.Log($"character scale: {glyphFont.fontInfo.Scale / glyphFont.fontInfo.PointSize}");
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Debug.Log($"character needs resampling: {glyphInfoArray[i].needsResample}");
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glyphInfoArray[i].size.x = (int) ((glyph.width + (padding * 2)) * elementScale);
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glyphInfoArray[i].size.y = (int) ((glyph.height + (padding * 2)) * elementScale);
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glyphInfoArray[i].position.x = (int) ((xAdvance + glyph.xOffset - padding) * elementScale);
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glyphInfoArray[i].position.y = (int) ((baseline + glyph.yOffset - padding) * elementScale);
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Debug.Log($"character size: {glyphInfoArray[i].size}");
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Debug.Log($"character position: {glyphInfoArray[i].position}");
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}
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// calculate texture bounds
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int xOffset = glyphInfoArray[0].position.x;
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var textureWidth = (glyphInfoArray[charArray.Length - 1].position.x + glyphInfoArray[charArray.Length - 1].size.x) - xOffset;
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var textureHeight = (int) baseScale * (ascender + descender + padding * 2);
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// ensure texture sizes are powers of 2
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textureWidth = Mathf.NextPowerOfTwo(textureWidth);
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textureHeight = Mathf.NextPowerOfTwo(textureHeight);
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Debug.Log($"texture is {textureWidth} x {textureHeight}");
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var texture = new Texture2D(textureWidth, textureHeight, TextureFormat.Alpha8, true);
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var colors = new Color32[textureWidth * textureHeight];
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for (var i = 0; i < fontInfoArray.Length; i++) {
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if (fontInfoArray[i].font == null) break;
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fontInfoArray[i].fontAtlas = fontInfoArray[i].font.atlas;
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fontInfoArray[i].fontAtlasColors = fontInfoArray[i].fontAtlas.GetPixels32();
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}
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for (int i = 0; i < charArray.Length; i++) {
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var glyphInfo = glyphInfoArray[i];
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var glyph = glyphInfo.glyph;
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var fontInfo = fontInfoArray[glyphInfo.fontIndex];
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var srcPos = new Vector2Int((int) glyph.x, (int) glyph.y);
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var dstPos = glyphInfo.position;
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dstPos.x += xOffset;
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var dstSize = glyphInfo.size;
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Debug.Log($"rendering character number {i}");
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if (glyphInfo.needsResample) {
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var srcSize = new Vector2(glyph.width, glyph.height);
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TextureUtils.BlitRectBilinearAlpha(fontInfo.fontAtlas, srcPos, srcSize, texture, colors, dstPos, dstSize, TextureUtils.BlitMode.Add);
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}
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else {
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TextureUtils.BlitRectAlpha(fontInfo.fontAtlas, fontInfo.fontAtlasColors, srcPos, texture, colors, dstPos, dstSize, TextureUtils.BlitMode.Add);
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}
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}
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texture.Apply(true);
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return texture;
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}
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}
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}
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