Three.js中的点线面

1.点javascript 3D空间中点用向量表示java THREE.Vector3 = function ( x, y, z ) { this.x = x || 0; this.y = y || 0; this.z = z || 0; }; ||0表示在x没有定义是其默认值为数组 或者也能够函数 var point1 = new THREE.Vector3();this point1.set(

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