【HTML5】3D模型--百行代码实现旋转立体魔方实例

init(50,"mylegend",400,400,main);  
var a = 0,b=0,backLayer,step = 20,key = null;  
function main(){  
    backLayer = new LSprite();  
    addChild(backLayer);  
    backLayer.x = 120,backLayer.y = 120;  
    //后  
    for(var x=0;x<3;x++){  
        for(var y=0;y<3;y++){  
            z = 0;  
            var rect = new Rect([-3*step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-step + y*2*step,-3*step + z*2*step],[-3*step + x*2*step,-step + y*2*step,-3*step + z*2*step],0,0,"#FF4500");  
            backLayer.addChild(rect);  
        }  
    }  
    //前  
    for(var x=0;x<3;x++){  
        for(var y=0;y<3;y++){  
            z = 3;  
            var rect = new Rect([-3*step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-step + y*2*step,-3*step + z*2*step],[-3*step + x*2*step,-step + y*2*step,-3*step + z*2*step],0,0,"#FF0000");  
            backLayer.addChild(rect);  
        }  
    }  
    //上  
    for(var x=0;x<3;x++){  
        for(var z=0;z<3;z++){  
            y = 0;  
            var rect = new Rect([-3*step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-3*step + y*2*step,-step + z*2*step],[-3*step + x*2*step,-3*step + y*2*step,-step + z*2*step],0,0,"#FFFFFF");  
            backLayer.addChild(rect);  
        }  
    }  
    //下  
    for(var x=0;x<3;x++){  
        for(var z=0;z<3;z++){  
            y = 3;  
            var rect = new Rect([-3*step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-step + x*2*step,-3*step + y*2*step,-step + z*2*step],[-3*step + x*2*step,-3*step + y*2*step,-step + z*2*step],0,0,"#FFFF00");  
            backLayer.addChild(rect);  
        }  
    }  
    //左  
    for(var y=0;y<3;y++){  
        for(var z=0;z<3;z++){  
            x = 0;  
            var rect = new Rect([-3*step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-3*step + x*2*step,-3*step + y*2*step,-step + z*2*step],[-3*step + x*2*step,-step + y*2*step,-step + z*2*step],[-3*step + x*2*step,-step + y*2*step,-3*step + z*2*step],0,0,"#008000");  
            backLayer.addChild(rect);  
        }  
    }  
    //右  
    for(var y=0;y<3;y++){  
        for(var z=0;z<3;z++){  
            x = 3;  
            var rect = new Rect([-3*step + x*2*step,-3*step + y*2*step,-3*step + z*2*step],[-3*step + x*2*step,-3*step + y*2*step,-step + z*2*step],[-3*step + x*2*step,-step + y*2*step,-step + z*2*step],[-3*step + x*2*step,-step + y*2*step,-3*step + z*2*step],0,0,"#0000FF");  
            backLayer.addChild(rect);  
        }  
    }  
    backLayer.addEventListener(LEvent.ENTER_FRAME,onframe);  
}  
function onframe(){  
    a += 0.1 , b += 0.1;  
    backLayer.childList = backLayer.childList.sort(function(a,b){return a.z - b.z;});  
    for(key in backLayer.childList){  
        backLayer.childList[key].setAngle(a,b);  
        backLayer.childList[key].draw(backLayer);  
   }  
}