更新，3D模型骨骼使用纹理贴图的形式传数据，提升骨骼数量上限

src/2d/display/Stage.ts

@@ -32,7 +32,7 @@ export class Stage extends Container {
      * @public
      * @since 1.0.0
      * @type {Rectangle}
-     * @default 
+     * @default
      * @readonly
      */
     public viewRect: Rectangle = new Rectangle();
@@ -359,8 +359,8 @@ export class Stage extends Container {
      * 这里会按照原_dpi修改canvas的实际尺寸
      * 一般设备的dpi不会改变,
      * web全屏环境可不传参数,否则自行计算显示尺寸传入
-     * @param divWidth 
-     * @param divHeight 
+     * @param divWidth
+     * @param divHeight
      * @example
      *   window.addEventListener('resize', () => {stage.resize()});
      */
@@ -501,7 +501,8 @@ export class Stage extends Container {
                 e.identifier = 0;
                 points = [e];
             } else {
-                points = [e.changedTouches[0]];
+                // points = [e.changedTouches[0]];
+                points = e.changedTouches;
             }
             // points = [e.changedTouches[0]];
             //  points = [e.touches[0]];//不能用这个
@@ -525,8 +526,8 @@ export class Stage extends Container {
                 } else {
                     cp = new Point();
                 }
-                cp.x = ((points[o].pageX || points[o].x || points[o].b || 0) - offsetX) * s._dpi// devicePixelRatio;
-                cp.y = ((points[o].pageY || points[o].y || points[o].c || 0) - offsetY) * s._dpi// devicePixelRatio;
+                cp.x = ((points[o].pageX || points[o].x || points[o].b) - offsetX) * s._dpi// devicePixelRatio;
+                cp.y = ((points[o].pageY || points[o].y || points[o].c) - offsetY) * s._dpi// devicePixelRatio;
                 // my.alert({
                 //   title: JSON.stringify(points[o])
                 // });
@@ -756,4 +757,4 @@ export class Stage extends Container {
         s._ml = null;
         super.destroy();
     }
-}
+}
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