【cocos creator】2.4.x实现简单3d功能，点击选中，旋转，材质修改，透明材质

demo下载：（待审核）
https://download.csdn.net/download/K86338236/89527924

const { ccclass, property } = cc._decorator;const enum box_color {NORMAL = 0,DASHED_LINE = 1,//虚线TRANSLUCENT = 2,//半透明
}@ccclass
export default class main extends cc.Component {@property(cc.Node)boxNode: cc.Node = null;@property(cc.Node)layerNode: cc.Node = null;/**层的父节点 */@property(cc.Node)layerRootNode: cc.Node = null;/**点击检测射线 */@property(cc.Node)touchNode: cc.Node = null;/**普通的颜色 */@property([cc.Material])changeMat: cc.Material[] = [];/**普通颜色第二层，半透明用 */@property([cc.Material])changeMat2: cc.Material[] = [];/**选择状态的颜色 */@property([cc.Material])changeMatChoose: cc.Material[] = [];@property([cc.Material])changeMatChoose2: cc.Material[] = [];/**向左旋转45 */@property(cc.Button)leftBtn: cc.Button = null;/**向右旋转45 */@property(cc.Button)rightBtn: cc.Button = null;/**分离、合起 */@property(cc.Button)divideBtn: cc.Button = null;/**已经修改颜色uid物体 */changeUids: string[] = [];/**当前分离状态，是否分离 */curDivideState: boolean = false;/**当前角度 */curAngle: number = 0;/**是否动作中 */isPlay: boolean = false;/**当前角度 */choose_type: number = 0;// onLoad () {}start() {this.setAngle(-15)cc.director.getPhysics3DManager().enabled = true;this.touchNode.on(cc.Node.EventType.TOUCH_START, this.onTouchStart, this);let boxArr = ["1,1|1,2|1,3|2,1|2,2|3,1",