shapeCollisions拆分

source/src/Physics/Shapes/Box.ts

@@ -69,7 +69,7 @@ module es {
         public collidesWithShape(other: Shape, result: CollisionResult): boolean {
             // 特殊情况，这一个高性能方式实现，其他情况则使用polygon方法检测
             if (other instanceof Box && (other as Box).isUnrotated) {
-                return ShapeCollisions.boxToBox(this, other, result);
+                return ShapeCollisionsBox.boxToBox(this, other, result);
             }
 
             // TODO: 让 minkowski 运行于 cricleToBox
@@ -86,7 +86,7 @@ module es {
 
         public pointCollidesWithShape(point: es.Vector2, result: es.CollisionResult): boolean {
             if (this.isUnrotated)
-                return ShapeCollisions.pointToBox(point, this, result);
+                return ShapeCollisionsPoint.pointToBox(point, this, result);
 
             return super.pointCollidesWithShape(point, result);
         }