ThreeJS几何翻转 [英] ThreeJS geometry flipping

问题描述

我遇到了几何翻转问题，我尝试使用负比例技术进行翻转，但失败了.

I am facing a problem with geometry flipping, I tried flipping using the negative scale technique but it fails.

我可以使用什么技术在特定轴上翻转 3d 对象?

What is the technique that I can use to flip a 3d object across specific axis?

翻转是指对象看起来应该像在镜子上渲染一样.

By flipping I mean the object should look as it was rendered over a mirror.

如果这无法通过three.js渲染实现，我该如何使用Blender来实现?

if this is not possible through three.js rendering how can I use Blender to achieve this?

推荐答案

您必须将变换矩阵应用于几何(或网格/对象)，这里是平面 (O, y, z) 对称的示例，您可以适应您的具体情况

You have to apply a transformation matrix to the geometry (or mesh/object), here is an example for plannar (O, y, z) symetry, you can adapt for your specific case

var mS = (new THREE.Matrix4()).identity();
//set -1 to the corresponding axis
mS.elements[0] = -1;
//mS.elements[5] = -1;
mS.elements[10] = -1;

geometry.applyMatrix(mS);
//mesh.applyMatrix(mS);
//object.applyMatrix(mS);

这篇关于ThreeJS几何翻转的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！