TreeInstance position to world position-CodePudding

I would like to get the position of trees (TreeInstance) on the terrain. I have the following code that I use but the position of the tree is not correct.

foreach (var treeInstance in terrainData.treeInstances) 
{
    resourcePositions.Add(treeInstance.position);
}

CodePudding user response：

The TreeInstance position is actually related to the height map of the terrain. To convert it to the world position you should do the following:

foreach (var treeInstance in terrainData.treeInstances) 
{
    var treeInstancePos = treeInstance.position;
    var localPos = new Vector3(treeInstancePos.x * terrainData.size.x, treeInstancePos.y * terrainData.size.y, treeInstancePos.z * terrainData.size.z);
    var worldPos = Terrain.activeTerrain.transform.TransformPoint(localPos);
    resourcePositions.Add(worldPos);
}

On the first line we just retrieve the position on the heightmap. Then we convert it to local position and finally to world position.