Threejs: assign different colors to each vertex in a geometry

Question

I want to do picking via IdMapping in Three.js

Because of performance issues I only have one huge geometry, computed like this:

for (var i = 0; i <         


        

Answer 1

It has to be geometry.vertexColors instead of geometry.colors (push a colour per vertex).

And the material:

material = new THREE.MeshBasicMaterial({ vertexColors: THREE.VertexColors });