New Frame Crop function.

src/components/Transform.js

@@ -431,11 +431,17 @@ Phaser.Component.Transform.prototype = {
         }
         else
         {
-            w0 = frame.width * (1 - this._anchorX);
+            // w0 = frame.width * (1 - this._anchorX);
-            w1 = frame.width * -this._anchorX;
+            // w1 = frame.width * -this._anchorX;
 
-            h0 = frame.height * (1 - this._anchorY);
+            // h0 = frame.height * (1 - this._anchorY);
-            h1 = frame.height * -this._anchorY;
+            // h1 = frame.height * -this._anchorY;
+
+            w0 = frame.cutWidth * (1 - this._anchorX);
+            w1 = frame.cutWidth * -this._anchorX;
+
+            h0 = frame.cutHeight * (1 - this._anchorY);
+            h1 = frame.cutHeight * -this._anchorY;
         }
 
         var resolution = frame.source.resolution;

src/textures/Crop.js

@@ -0,0 +1,50 @@
+/**
+* @author       Richard Davey <rich@photonstorm.com>
+* @copyright    2016 Photon Storm Ltd.
+* @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
+*/
+
+/**
+*
+* @class Phaser.TextureCrop
+* @constructor
+* @param {object} source
+* @param {number} scaleMode
+*/
+Phaser.TextureCrop = function (gameObject, width, height, x, y)
+{
+    var frame = gameObject.frame;
+
+    if (width === undefined) { width = frame.data.cut.w; }
+    if (height === undefined) { height = frame.data.cut.h; }
+    if (x === undefined) { x = 0; }
+    if (y === undefined) { y = 0; }
+
+    if (width === undefined)
+    {
+        //  No arguments means reset the crop
+        frame.cutX = frame.data.cut.x;
+        frame.cutY = frame.data.cut.y;
+        frame.cutWidth = frame.data.cut.w;
+        frame.cutHeight = frame.data.cut.h;
+    }
+    else if (width !== frame.cutWidth || height !== frame.cutHeight || x !== frame.cutX || y !== frame.cutY)
+    {
+        frame.cutX = Phaser.Math.clamp(x, frame.data.cut.x, frame.data.cut.r);
+        frame.cutY = Phaser.Math.clamp(y, frame.data.cut.y, frame.data.cut.b);
+        frame.cutWidth = Phaser.Math.clamp(width, 0, frame.data.cut.w - frame.cutX);
+        frame.cutHeight = Phaser.Math.clamp(height, 0, frame.data.cut.h - frame.cutY);
+    }
+
+    //  ?
+    // frame.x = frame.cutX;
+    // frame.y = frame.cutY;
+    // frame.width = frame.cutWidth;
+    // frame.height = frame.cutHeight;
+
+    frame.updateUVs();
+
+    gameObject.transform.updateVertexData();
+
+    return gameObject;
+};