如何从three.js中的一系列3D点创建3D多边形？ [英] How do I create a 3D polygon from a series of 3D points in three.js?

问题描述

我想知道在给定three.js中3D点数组的情况下，生成自定义3D多边形的最佳方法是什么。这是一个没有孔的简单多边形。这些点是有序的，以便它们表示相邻的顶点。我可以在2D模式下完成，但我不这样做
谢谢您的帮助！

I wonder what would be the best way to generate a custom 3D polygon given an array of 3D points in three.js. It is a simple polygon without holes. The points are ordered so that they represent neighboring vertices.I can do it in 2D, but I don't want the vertices to be coplanar. Thank you for your help!

推荐答案

主要问题这是如何从多个点创建3D网格的方法。换句话说：您需要弄清楚应该连接哪个顶点以形成一个三角形。

The main problem here is how to create a 3D mesh from a bunch of points. In other words: you need to figure out which of the vertices should be connect to form a triangle.

这是一件非常复杂的事情（嗯，至少我

This is an surprisingly complicated thing to do (well, at least I was surprised) and there are tons of scientific papers, libraries and so on about that.

但是，在您的情况下，这有点简单，因为您已经大致了解了顶点应该连接起来。我建议您看看 earcut-library 或 libtess.js ，两者都应该能够创建所需的三角剖分。

However, in your case it is a bit simpler as you already know roughly how the vertices should get connected. I would recommend you have a look at the earcut-library or libtess.js, both of which should be able to create the triangulations you need.

一旦有了，就可以大致参考 @ lior-trau的建议，以了解如何通过结果。

Once you have that, you can roughly go with @lior-trau's recommendation for how to create the geometry from the result.

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