/// <summary>
/// Calculates data used for placing grass on terrain regardless of
/// whether or not this data has already been computed previously.
/// Use <c>HasGrassData</c> to check if its already been computed.
/// This method calculates grass meshes via a coroutine which calculates a
/// mesh and then waits for the next frame before continuing to the next.
/// </summary>
public static void CalculateGrassMeshes(TerrainTile tile)
{
GrassTile gt = new GrassTile(tile, TerraSettings.Instance.GrassStepLength);
CalculatingTile = true;
tile.StartCoroutine(gt.CalculateCells((data) => {
List <GameObject> createdGos = new List <GameObject>(data.Count);
GameObject parent = SetupGrassParent(tile);
foreach (GrassTile.MeshData md in data)
{
//Apply material to each Mesh
if (md.vertices != null)
{
GameObject grassGO = new GameObject("Grass");
grassGO.transform.parent = parent.transform;
createdGos.Add(grassGO);
var mf = grassGO.AddComponent <MeshFilter>();
var mr = grassGO.AddComponent <MeshRenderer>();
mr.material = Material;
Mesh m = new Mesh();
m.SetVertices(md.vertices);
m.SetNormals(md.normals);
m.SetIndices(md.indicies.ToArray(), MeshTopology.Points, 0);
mf.mesh = m;
}
}
CachedMeshData.Add(tile, createdGos);
CalculatingTile = false;
}));
}