From eceddb52af40993a9e73c3e9483080309f5b024d Mon Sep 17 00:00:00 2001
From: Nathan Adams <adamsna@datanethost.net>
Date: Sat, 5 May 2012 19:34:37 -0500
Subject: [PATCH]  * 1.0.1.5 - 5/5/2012  * - Adding SplitFlat extension for
 Texture2D

---
 axios/Axios_settings.cs              |  6 ++++
 axios/Engine/Extensions/Texture2D.cs | 48 ++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)

diff --git a/axios/Axios_settings.cs b/axios/Axios_settings.cs
index 1b826a0..959d509 100644
--- a/axios/Axios_settings.cs
+++ b/axios/Axios_settings.cs
@@ -62,6 +62,12 @@
  * 1.0.1.3 - 4/7/2012
  * - Adding a check in the AxiosTimer update to only tick if the game is active
  * 
+ * 1.0.1.4 - 4/27/2012
+ * - Merging the new GSM
+ * 
+ * 1.0.1.5 - 5/5/2012
+ * - Adding SplitFlat extension for Texture2D
+ * 
  */
 
 using System.Reflection;
diff --git a/axios/Engine/Extensions/Texture2D.cs b/axios/Engine/Extensions/Texture2D.cs
index 45a6ca3..441557e 100644
--- a/axios/Engine/Extensions/Texture2D.cs
+++ b/axios/Engine/Extensions/Texture2D.cs
@@ -132,6 +132,54 @@ namespace Axios.Engine.Extenions
             return r;
         }
 
+        /// http://gamedev.stackexchange.com/questions/11584/xna-splitting-one-large-texture-into-an-array-of-smaller-textures
+        /// <summary>
+        /// Splits a texture into an array of smaller textures of the specified size.
+        /// </summary>
+        /// <param name="original">The texture to be split into smaller textures</param>
+        /// <param name="partWidth">The width of each of the smaller textures that will be contained in the returned array.</param>
+        /// <param name="partHeight">The height of each of the smaller textures that will be contained in the returned array.</param>
+        public static Texture2D[] SplitFlat(this Texture2D original, int partWidth, int partHeight, out int xCount, out int yCount)
+        {
+            yCount = original.Height / partHeight; //+ (partHeight % original.Height == 0 ? 0 : 1);//The number of textures in each horizontal row
+            xCount = original.Width / partWidth; //+(partWidth % original.Width == 0 ? 0 : 1);//The number of textures in each vertical column
+            Texture2D[] r = new Texture2D[xCount * yCount];//Number of parts = (area of original) / (area of each part).
+            int dataPerPart = partWidth * partHeight;//Number of pixels in each of the split parts
+
+            //Get the pixel data from the original texture:
+            Color[] originalData = new Color[original.Width * original.Height];
+            original.GetData<Color>(originalData);
+
+            int index = 0;
+            for (int y = 0; y < yCount * partHeight; y += partHeight)
+                for (int x = 0; x < xCount * partWidth; x += partWidth)
+                {
+                    //The texture at coordinate {x, y} from the top-left of the original texture
+                    Texture2D part = new Texture2D(original.GraphicsDevice, partWidth, partHeight);
+                    //The data for part
+                    Color[] partData = new Color[dataPerPart];
+
+                    //Fill the part data with colors from the original texture
+                    for (int py = 0; py < partHeight; py++)
+                        for (int px = 0; px < partWidth; px++)
+                        {
+                            int partIndex = px + py * partWidth;
+                            //If a part goes outside of the source texture, then fill the overlapping part with Color.Transparent
+                            if (y + py >= original.Height || x + px >= original.Width)
+                                partData[partIndex] = Color.Transparent;
+                            else
+                                partData[partIndex] = originalData[(x + px) + (y + py) * original.Width];
+                        }
+
+                    //Fill the part with the extracted data
+                    part.SetData<Color>(partData);
+                    //Stick the part in the return array:                    
+                    r[index++] = part;
+                }
+            //Return the array of parts.
+            return r;
+        }
+
         /// http://forums.create.msdn.com/forums/t/79258.aspx
         /// <summary>
         /// Combines one texture with another