Add getters for the x,y,z components of X.vector.

The original x,y,z properties get optimized (as part of the closure library) during compilation. There was no way to export them as x,y,z without modifying the goog.math.Vec3 class.

Now the exported properties are called
X.vector.xx
X.vector.yy
X.vector.zz

math/testing/matrix_test.js

@@ -20,11 +20,11 @@ function testXmatrixMultiplyByVector() {
 
   // multiplying the matrix by the vector should result in the vector since the
   // matrix is the identity
-  vector = X.matrix.multiplyByVector(matrix, vector.x, vector.y, vector.z);
+  vector = X.matrix.multiplyByVector(matrix, vector.xx, vector.yy, vector.zz);
 
-  assertEquals(baseline.x, vector.x);
-  assertEquals(baseline.y, vector.y);
-  assertEquals(baseline.z, vector.z);
+  assertEquals(baseline.xx, vector.xx);
+  assertEquals(baseline.yy, vector.yy);
+  assertEquals(baseline.zz, vector.zz);
 
 }
 

math/testing/vector_test.js

@@ -13,9 +13,9 @@ function testXvectorNormalize() {
   // scaling with (1/magnitude = 0.2672612419124244)
   // should result in
   // x=0.2672612419124244, y=0.5345224838248488, z=0.8017837257372732
-  assertEquals(0.2672612419124244, vector.x);
-  assertEquals(0.5345224838248488, vector.y);
-  assertEquals(0.8017837257372732, vector.z);
+  assertEquals(0.2672612419124244, vector.xx);
+  assertEquals(0.5345224838248488, vector.yy);
+  assertEquals(0.8017837257372732, vector.zz);
 
 }
 
@@ -27,9 +27,9 @@ function testXvectorNormalizeWithZeroMagnitude() {
   // normalize the vector
   vector.normalize();
 
-  assertEquals(0, vector.x);
-  assertEquals(0, vector.y);
-  assertEquals(0, vector.z);
+  assertEquals(0, vector.xx);
+  assertEquals(0, vector.yy);
+  assertEquals(0, vector.zz);
 
 }
 

math/vector.js

@@ -67,6 +67,48 @@ X.vector.cross = goog.math.Vec3.cross;
 X.vector.distance = goog.math.Vec3.distance;
 X.vector.lerp = goog.math.Vec3.lerp;
 
+// now we need to make sure we can access the x,y,z
+// components of a goog.math.Vec3 which might be renamed
+// during the compilation. we don't want to modify the goog.math.Vec3
+// class so this is the easiest workaround.
+/**
+ * Get the x component of this vector.
+ *
+ * @return {number} The x component of this vector.
+ * @public
+ */
+X.vector.prototype.__defineGetter__('xx', function() {
+
+  return this.x;
+
+});
+
+
+/**
+ * Get the y component of this vector.
+ *
+ * @return {number} The y component of this vector.
+ * @public
+ */
+X.vector.prototype.__defineGetter__('yy', function() {
+
+  return this.y;
+
+});
+
+
+/**
+ * Get the z component of this vector.
+ *
+ * @return {number} The z component of this vector.
+ * @public
+ */
+X.vector.prototype.__defineGetter__('zz', function() {
+
+  return this.z;
+
+});
+
 
 goog.exportSymbol('X.vector', X.vector);
 goog.exportSymbol('X.vector.prototype.clone', X.vector.prototype.clone);