SpotLight在three.js中旋转

Question

我正在尝试旋转聚光灯.我的代码是:

var light   = new THREE.SpotLight( color, intensity, distance );
light.position.set( 0, 100, 0 );
light.rotation.set( 0, Math.PI, 0 );
light.shadowCameraFar = 50;
light.shadowCameraNear      = 0.01;     
light.castShadow        = true;
light.shadowDarkness        = 0.5;
light.shadowCameraVisible   = true;
light.shadowCameraFar = 800;
light.shadowCameraFov = 15;
scene.add( light );

我想知道我做错了什么.聚光灯不会改变其旋转,与我放置的值无关.

Answer 1

light.target确定聚光灯的阴影相机方向。例如，如果场景中有一个名为 myObject 的对象，则可以执行如下操作：

light.target = myObject;

请记住，light.target是Object3D，而不是位置向量。

三.js r.49