Initial Commit

codechicken/lib/render/MultiIconTransformation.java

@@ -0,0 +1,41 @@
+package codechicken.lib.render;
+
+import net.minecraft.util.Icon;
+
+/**
+ * Icon index is specified as (int)u>>1
+ */
+public class MultiIconTransformation implements IUVTransformation
+{
+    public Icon[] icons;
+    
+    public MultiIconTransformation(Icon[] icons)
+    {
+        this.icons = icons;
+    }
+    
+    @Override
+    public void transform(UV texcoord)
+    {
+        int i = (int)texcoord.u>>1;
+        Icon icon = icons[i%icons.length];
+        texcoord.u = icon.getInterpolatedU(texcoord.u%2*16);
+        texcoord.v = icon.getInterpolatedV(texcoord.v%2*16);
+    }
+    
+    public static CCModel setIconIndex(CCModel m, int index)
+    {
+        return setIconIndex(m, 0, m.verts.length, index);
+    }
+    
+    public static CCModel setIconIndex(CCModel m, int start, int length, int index)
+    {
+        for(int k = start; k < length; k++)
+        {
+            UV uv = m.verts[k].uv;
+            uv.u = uv.u%2+index*2;
+            uv.v %= 2;
+        }
+        return m;
+    }
+}