是否可以在three.js中切掉几何形状的一部分?

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问题描述

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是否可以在three.js中删除或切掉形状的部分?

例如，如果我制作了一个 CylinderGeometry 并想将它的前部剃掉"，这样前部是平的，而后部是弯曲的，就像一个半圆柱体.这可能吗?

我需要能够在圆柱体的正面和背面做到这一点，所以只有侧面是弯曲的.

解决方案

这是可能的.你可以自己处理三角形，或者使用布尔运算和像 和此处提供一些与操纵几何体相关的建议.

还有其他 算法网格可以移植，但这取决于你需要这个东西有多简单或复杂.

Is it possible to remove or cut away sections of shapes in three.js?

For example if I made a CylinderGeometry and wanted to "shave" the front of it away, so that the front was flat and the back was curved, like a half cylinder. Is this possible?

I need to be able to do it to the front and back of a cylinder, so just the sides are curved.

解决方案

It is possible. You can deal with triangles yourself, or use Boolean operations with a library like Constructive Solid Geometry to do mesh subtraction.

Have a look here and here for some suggestions related to manipulating geometry.

There are other algorithms to slice a mesh that could be ported over, but it depends how simple or complex you need this thing to be.

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