三.js 透视相机当前角度(以度为单位) [英] three.js perspectivecamera current angle in degrees

问题描述

对于一个项目，我使用了 PerspectiveCamera，它使用 r69 的 vrcontrols 进行旋转.在某一点上，我需要当前的视角度数(相机正在看的方向的水平和垂直度数).我将如何获得这些?

For a project I use a PerspectiveCamera which gets rotated using the vrcontrols from r69. At one point I require the current viewing angle degrees (horizontal & vertical degrees at which direction the camera is looking at). How would I acquire those?

推荐答案

您想要的也称为欧拉角.Three.js euler 有一个内置函数可以从四元数设置它们.

What you want are also called euler angles. Three.js eulers have a built in function to set them from a quaternion.

var quat = new THREE.Quaternion();
var euler = new THREE.Euler();
euler.setFromQuaternion(quat);

alert('X in degrees: ' + euler.x + '\n' +'Y in degrees: ' + euler.y + '\n' + 'Z in degrees: ' + euler.z);

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