November 28, 2012, 11:29:21 pm
Actually, it is possible, but there is a little glitch in Lumion 2.5 which makes the process difficult to do.
First you need to apply a landscape material to your terrain mesh.
Then you can use any of the paint tools of the landscape material on your terrain mesh, HOWEVER, Lumion will appear not to paint straight on your mesh, but rather it will look like painting on the native terrain object (the native terrain should be an infinite plane below your mesh).
Just look at the infinite plane behind your model, and you should see the paint brush strokes on it.
Now, these brush strokes on the native terrain (the infinite plane) are projected vertically
on your imported mesh with the same landscape material applied to it.
So, if you are looking at your mesh from an angle, chances are you are painting far away on the native terrain plane. Therefore, the vertical projection of those brush strokes will miss your mesh, and it will look like you cannot paint it.
The only way to control accurately where you will be painting on your mesh is to look down on it while moving the camera far up in the sky, so to have a sort orthogonal site plan view.
Then you strokes should pretty much match on both the native plane and on your terrain mesh...
Clear as mud?
Maybe Lumion people can take it from here....
I still need to check version 3, and see if it behaves the same way.