框架优化

source/src/Utils/Extensions/Vector2Ext.ts

@@ -7,7 +7,7 @@ module es {
          * @param c
          */
         public static isTriangleCCW(a: Vector2, center: Vector2, c: Vector2) {
-            return this.cross(Vector2.subtract(center, a), Vector2.subtract(c, center)) < 0;
+            return this.cross(center.sub(a), c.sub(center)) < 0;
         }
 
         public static halfVector(): Vector2 {
@@ -48,7 +48,7 @@ module es {
         public static angle(from: Vector2, to: Vector2) {
             this.normalize(from);
             this.normalize(to);
-            return Math.acos(MathHelper.clamp(Vector2.dot(from, to), -1, 1)) * MathHelper.Rad2Deg;
+            return Math.acos(MathHelper.clamp(from.dot(to), -1, 1)) * MathHelper.Rad2Deg;
         }
 
         /**
@@ -58,8 +58,8 @@ module es {
          * @param right 
          */
         public static angleBetween(self: Vector2, left: Vector2, right: Vector2) {
-            let one = Vector2.subtract(left, self);
-            let two = Vector2.subtract(right, self);
+            const one = left.sub(self);
+            const two = right.sub(self);
             return this.angle(one, two);
         }
 

source/src/Utils/PolygonLight/VisibilityComputer.ts

@@ -63,7 +63,7 @@ module es {
          * @param radius 
          */
         public addCircleOccluder(position: Vector2, radius: number){
-            let dirToCircle = Vector2.subtract(position, this._origin);
+            let dirToCircle = position.sub(this._origin);
             let angle = Math.atan2(dirToCircle.y, dirToCircle.x);
 
             let stepSize = Math.PI / this.lineCountForCircleApproximation;

source/src/Utils/Triangulator.ts

@@ -13,15 +13,15 @@ module es {
 
         public static testPointTriangle(point: Vector2, a: Vector2, b: Vector2, c: Vector2): boolean {
             // 如果点在AB的右边，那么外边的三角形是
-            if (Vector2Ext.cross(Vector2.subtract(point, a), Vector2.subtract(b, a)) < 0)
+            if (Vector2Ext.cross(point.sub(a), b.sub(a)) < 0)
                 return false;
 
             // 如果点在BC的右边，则在三角形的外侧
-            if (Vector2Ext.cross(Vector2.subtract(point, b), Vector2.subtract(c, b)) < 0)
+            if (Vector2Ext.cross(point.sub(b), c.sub(b)) < 0)
                 return false;
 
             // 如果点在ca的右边，则在三角形的外面
-            if (Vector2Ext.cross(Vector2.subtract(point, c), Vector2.subtract(a, c)) < 0)
+            if (Vector2Ext.cross(point.sub(c), a.sub(c)) < 0)
                 return false;
 
             // 点在三角形上