three.js - 在 Three.js 中动态地将顶点添加到一行

Question

我想出了如何在threejs中画一条线，问题是我需要动态地给这条线添加顶点。当我动态地向线条添加顶点时，场景不会更新。

我试过 geometry.verticesNeedUpdate = true ，这似乎不起作用。

Answer 1

编辑:使用 BufferGeometry和 drawcalls您现在可以实现等效的功能。见 Drawing a line with three.js dynamically .
三.js r.71

不支持向线动态添加顶点。如 Wiki 中所述:

You can only update content of buffers, you cannot resize buffers (this is very costly, basically equivalent to creating new geometry).

You can emulate resizing by pre-allocating a larger buffer and then keeping unneeded vertices collapsed / hidden.

三.js r.55