角度y＆amp;来自vector3的z

Question

如何获得rotation.y＆amp;仅旋转.z（rotation.x = 0）使objet看起来像vector3？

Answer 1

Object3D（Mesh）扩展了一个lookAt()函数，Matrix4也是如此。

查看look at sample

Answer 2

我这样解决了： （基于这篇文章：3D Vector (X, Y, Z) look at Vector）

var  vec3 =  new THREE.Vector3(100, 0, 50);

var  xzdistance = Math.sqrt(vec3.x * vec3.x + vec3.z * vec3.z);

var  rotationY =  Math.atan2(vec3.x, vec3.z)  + Math.PI /2;
var  rotationZ = -Math.atan2(vec3.y, xzdistance);