feat: Add color indicators on pattern preview

WEGFan · Jan 9, 2022 · 8d7db3a · 8d7db3a
1 parent 9d8de8c
commit 8d7db3a
Show file tree

Hide file tree

Showing 2 changed files with 25 additions and 2 deletions.
diff --git a/Code/UI/PatternPreview.cs b/Code/UI/PatternPreview.cs
@@ -1,3 +1,5 @@
+using System.Collections.Generic;
+using System.Linq;
 using Microsoft.Xna.Framework;
 using Monocle;
 
@@ -7,6 +9,7 @@ public class PatternPreview : TextMenu.Item {
         public TrailPattern Pattern { get; set; }
 
         private readonly VirtualTexture previewTexture;
+        private readonly MTexture indicator;
         private BeforeRenderHook beforeRenderHook;
 
         private const int GradientBarWidth = 1000;
@@ -15,6 +18,7 @@ public class PatternPreview : TextMenu.Item {
         public PatternPreview(TrailPattern pattern) {
             Pattern = pattern;
             previewTexture = VirtualContent.CreateTexture("pattern-preview", GradientBarWidth, 1, Color.White);
+            indicator = GFX.Gui["Trailine/patternPreview/indicator"];
         }
 
         public override void Added() {
@@ -30,7 +34,7 @@ public override float LeftWidth() {
         }
 
         public override float Height() {
-            return 60f;
+            return 80f;
         }
 
         public void BeforeRender() {
@@ -43,8 +47,27 @@ public void BeforeRender() {
 
         public override void Render(Vector2 position, bool highlighted) {
             float menuCenterX = position.X + Container.Width / 2;
-            new MTexture(previewTexture).DrawJustified(new Vector2(menuCenterX, position.Y), new Vector2(0.5f, 0.5f),
+            new MTexture(previewTexture).DrawJustified(new Vector2(menuCenterX, position.Y), new Vector2(0.5f, 0f),
                 Color.White, new Vector2(1f, GradientBarHeight));
+
+            Vector2 left = new Vector2(menuCenterX, position.Y) - new Vector2(GradientBarWidth / 2f, 0f);
+
+            if (Pattern.ColorStops.Count == 1) {
+                indicator.DrawJustified(left, new Vector2(0.5f, 1f), Pattern.ColorStops[0].Color, 1f);
+                indicator.DrawJustified(left + new Vector2(GradientBarWidth, 0), new Vector2(0.5f, 1f), Pattern.ColorStops[0].Color, 1f);
+            } else {
+                List<float> weightAccumulated = new List<float>(Pattern.ColorStops.Count) {0};
+                float currentWeight = 0;
+                for (int i = 1; i < Pattern.ColorStops.Count; i++) {
+                    currentWeight += Pattern.ColorStops[i].Width;
+                    weightAccumulated.Add(currentWeight);
+                }
+                float weightSum = weightAccumulated.Last();
+                List<float> offsets = weightAccumulated.Select(i => GradientBarWidth * (i / weightSum)).ToList();
+                for (int i = 0; i < offsets.Count; i++) {
+                    indicator.DrawJustified(left + new Vector2(offsets[i], 0), new Vector2(0.5f, 1f), Pattern.ColorStops[i].Color, 1f);
+                }
+            }
         }
 
         public static void Load() {

diff --git a/Graphics/Atlases/Gui/Trailine/patternPreview/indicator.png b/Graphics/Atlases/Gui/Trailine/patternPreview/indicator.png