From 75f691133a6df72ab78d397c4fc634059d41bfa6 Mon Sep 17 00:00:00 2001
From: Harrison Deng <yunyangdeng@gmail.com>
Date: Fri, 10 Jul 2020 21:55:12 -0500
Subject: [PATCH] Rectangle mesh texture bounds can now be changed.

---
 .../Graphics/Render/RectangleMesh.cs          | 58 ++++++++++++-------
 1 file changed, 36 insertions(+), 22 deletions(-)

diff --git a/src/SlatedGameToolkit.Framework/Graphics/Render/RectangleMesh.cs b/src/SlatedGameToolkit.Framework/Graphics/Render/RectangleMesh.cs
index 8bb2f07..e256a74 100644
--- a/src/SlatedGameToolkit.Framework/Graphics/Render/RectangleMesh.cs
+++ b/src/SlatedGameToolkit.Framework/Graphics/Render/RectangleMesh.cs
@@ -11,6 +11,7 @@ namespace SlatedGameToolkit.Framework.Graphics.Render
         private bool changed;
         private Vector3 rotation;
         private Vector2 origin, dimensions;
+        private RectangleF textureBounds;
         private ValueTuple<Vector3, Vector2>[] vertices;
         private uint[] indices;
 
@@ -90,6 +91,30 @@ namespace SlatedGameToolkit.Framework.Graphics.Render
             }
         }
 
+        public RectangleF TextureBounds
+        {
+            get
+            {
+                return textureBounds;
+            }
+            set
+            {
+                this.vertices[0].Item2.X = value.X;
+                this.vertices[0].Item2.Y = value.Y;
+
+                this.vertices[1].Item2.X = value.X + value.Width;
+                this.vertices[1].Item2.Y = value.Y;
+                
+                this.vertices[2].Item2.X = value.X + value.Width;
+                this.vertices[2].Item2.Y = value.Y + value.Height;
+                
+                this.vertices[3].Item2.X = value.X;
+                this.vertices[3].Item2.Y = value.Y + value.Height;
+
+                this.textureBounds = value;
+            }
+        }
+
         public uint[] Elements { get {return indices; } }
 
         public Vector3 Rotation 
@@ -111,8 +136,8 @@ namespace SlatedGameToolkit.Framework.Graphics.Render
 
         public Color Color { get; set; }
 
-        public RectangleMesh(RectangleF textureRegion, ITexture texture, Color color)
-        {
+
+        public RectangleMesh(RectangleF meshBounds, ITexture texture, Color color) {
             this.changed = true;
             this.rotation = Vector3.Zero;
             this.origin = Vector2.Zero;
@@ -121,33 +146,22 @@ namespace SlatedGameToolkit.Framework.Graphics.Render
             this.Color = color;
             this.indices = new uint[] {0, 1, 3, 1, 2, 3};
             vertices = new ValueTuple<Vector3, Vector2>[4];
-            
-            this.vertices[0].Item2.X = textureRegion.X;
-            this.vertices[0].Item2.Y = textureRegion.Y;
-
-            this.vertices[1].Item2.X = textureRegion.X + textureRegion.Width;
-            this.vertices[1].Item2.Y = textureRegion.Y;
-            
-            this.vertices[2].Item2.X = textureRegion.X + textureRegion.Width;
-            this.vertices[2].Item2.Y = textureRegion.Y + textureRegion.Height;
-            
-            this.vertices[3].Item2.X = textureRegion.X;
-            this.vertices[3].Item2.Y = textureRegion.Y + textureRegion.Height;
-
+            this.textureBounds = new RectangleF(0, 0, 1, 1);
             this.matRot = Matrix4x4.Identity;
 
-
-        }
-
-        public RectangleMesh(RectangleF meshBounds, RectangleF textureRegion, ITexture texture, Color color) : this(textureRegion, texture, color) {
+            this.TextureBounds = textureBounds;
             this.Bounds = meshBounds;
         }
 
-        public RectangleMesh(ITexture texture, Color color) : this(new Rectangle(0, 0, 1, 1), texture, color) {
+        public RectangleMesh(ITexture texture, Color color) : this(new RectangleF(0,0,0,0), texture, color)
+        {
+            
         }
 
-
-
+        public RectangleMesh(RectangleF meshBounds, RectangleF textureRegion, ITexture texture, Color color) : this(meshBounds, texture, color) {
+            this.TextureBounds = textureRegion;
+        }
+        
         
         private void CalculateVertices() {
             if (!changed) return;