Helper to set anchor without changing position value.

diff --git a/src/yuu/rdr.js b/src/yuu/rdr.js
index 99b8c3f..552d593 100644 (file)
--- a/src/yuu/rdr.js
+++ b/src/yuu/rdr.js
@@ -176,6 +176,15 @@
                 b[3] = b[7] = b[11] = b[15] = a;
                 this._vbuf.dirty = true;
             }
+        },
+
+        anchorAtPosition: {
+            get: function () { return this.anchor; },
+            set: function (a) {
+                var position = this.position;
+                this.anchor = a;
+                this.position = position;
+            }
         }
     });
 
@@ -297,6 +306,7 @@
         size: { alias: "_quad.size", chainable: true },
         position: { alias: "_quad.position", chainable: true },
         anchor: { alias: "_quad.anchor", chainable: true },
+        anchorAtPosition: { alias: "_quad.anchorAtPosition", chainable: true },
         xy: { alias: "_quad.position", chainable: true },
         texBounds: { alias: "_quad.texBounds", chainable: true },
         color: { alias: "_quad.color", chainable: true },