Hello!
When i do ground.getVerticesData(BABYLON.VertexBuffer.PositionKind) return null,is it correct?
Hello!
When i do ground.getVerticesData(BABYLON.VertexBuffer.PositionKind) return null,is it correct?
CreateGroundFromHeightMap is asynchronous because it needs to read the texture first. There is a callback in that function where you should drop your code 
ops,my bad
sorry!