How to quickly update a large BufferGeometry?

Question

I\'m using a BufferGeometry to draw thousands of cubes which makes up the terrain, but having a hard time finding out how to update the geometry if I need to change the posi

Answer 1

As of r71 threejs supports bufferSubData.

Use a DynamicBufferAttribute, (or just set updateRange correctly)

var positionAttr = geometry.attributes.position 
// if not using DynamicBufferAttribute initialize updateRange:
// positionAttr.updateRange = {};
positionAttr.updateRange.offset = 0; // where to start updating
positionAttr.updateRange.count = 1; // how many vertices to update
positionAttr.needsUpdate = true;