Three.js dirtyVertices doesn't work

Question

I created a 12*12 plane in three.js, and I tried to edit it's verticles between 2 rendering, but it doesn't work.

I added this code, but nothing changed:

ground.geometry.dynamic = true;
ground.geometry.__dirtyVertices = true;
ground.geometry.computeCentroids();

Code here: http://jsfiddle.net/vpBEG/2/

Thanks in advance,

Answer 1

You have to reset your flags after each render:

ground.geometry.verticesNeedUpdate = true;

See the update to your fiddle

Answer 2

For Three.js r.49 you need to use

ground.geometry.verticesNeedUpdate = true;

See the wiki: https://github.com/mrdoob/three.js/wiki/Updates