terrain trees random rotation doesn't work

Unity Engine
1

hi all!
I’ve noticed that using the terrain and the trees placement with the random tree rotation the trees are placed all with no rotation…
the strange thing is that I do this script:

GameObject go = Selection.activeGameObject;
var terrain = go.GetComponent<Terrain>();
for (int i = 0; i < terrain.terrainData.treeInstances.Length; i++)
{
    Debug.Log("Rotation: "  + terrain.terrainData.treeInstances[i].rotation.ToString());   
    terrain.terrainData.treeInstances[i].rotation = 0.0f;
    Debug.Log("New Rotation: "  + terrain.terrainData.treeInstances[i].rotation.ToString());
}

the log tell me that the rotation is effectively randomized, but the 3d is still not rotated…
the line where is set the rotation to zero doesn’t work

thanks!

2

I’m having a similar issue - I’m creating a terrain in c# scripts and adding trees to it, and setting TreeInstance.rotation to random values, but all the trees are drawn with the same rotation. The documentation says it’s in radians, I thought maybe there was a mistake and tried degrees but that doesn’t help.

Does this happen to everyone else? Any idea how to fix it? Is it a bug in Unity? Should I report it?

3

seems that works only with speedtree trees, noway for custom trees

4

Yeah I figured it out in the end. Really frustrating as it makes the Unity custom tree creator basically useless.