How to draw mesh edges with Threejs

问题

I'm looking at drawing the edges of a mesh like on the following picture:

I tried to use THREE.EdgesHelper however it only groups the triangles that are in the same plane and therefore it looks like the wireframe on curved areas which I want to avoid.

Ideally it would be some sort of helper that I could display/hide/change colour.

I'm not exactly sure about what to look at for a starting point and your help would be much appreciated.

Thank you!

来源：https://stackoverflow.com/questions/24566247/how-to-draw-mesh-edges-with-threejs