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引擎版本 —— cocos creator 2.3.4

游戏代码：

 //优先初始化的时候，获取到cc.PhysicsPolygonColliderthis._poly = this.dragonFooAni.node.getComponent(cc.PhysicsPolygonCollider);//下面的修改顶点位置的方法可以在update里面去执行//获取骨骼动画上的挂件         str1:动画的父节点 str2：动画let attachment = this.skAni.getAttachment('pengzhuang2', 'pengzhuang3');//获取骨骼let slot = this.skAni.findSlot('pengzhuang2');//获取顶点的位置let arr = [];attachment.computeWorldVertices(slot, 0, attachment.worldVerticesLength, arr, 0, 2)//console.log("多边形挂件:", attachment, "多边形顶点:", arr.toString());for (let i = 0; i < 4; i++) {this._poly.points[i].x = arr[i * 2];this._poly.points[i].y = arr[i * 2 + 1];
}
this._poly.apply();

在原生环境下没有computeWorldVertices接口，我们需要复写引擎中的computeWorldVertices方法

_computeWorldVertices = function (slot, start, count, worldVertices, offset, stride) {count = offset + (count >> 1) * stride;let deformArray = slot.deform;let vertices;if (deformArray.length > 0)vertices = deformArray;if (!vertices)return;let bone = slot.bone;let x = bone.worldX;let y = bone.worldY;let a = bone.a, b = bone.b, c = bone.c, d = bone.d;for (let v_1 = start, w = offset; w < count; v_1 += 2, w += stride) {let vx = vertices[v_1], vy = vertices[v_1 + 1];worldVertices[w] = vx * a + vy * b + x;worldVertices[w + 1] = vx * c + vy * d + y;}return;};