public void UpdateMesh(IMeshContext options, IReadOnlyDictionary <Vector2i, ITerrainMesh2i> terrainMeshes, IEnumerable <Vector2i> toKeepGroups)
{
if (terrainMeshes != null)
{
using (options.ProfilerFactory("Setting Mesh", this))
{
var toDeleteGroups = _meshFilters.Keys.Except(terrainMeshes.Keys).Except(toKeepGroups).ToList();
int meshIndex = 0;
foreach (var terrainMesh in terrainMeshes)
{
MeshFilter meshFilter;
if (!_meshFilters.TryGetValue(terrainMesh.Key, out meshFilter))
{
if (toDeleteGroups.Count > 0)
{
int toDeleteIndex = toDeleteGroups.Count - 1;
var toDeleteKey = toDeleteGroups[toDeleteIndex];
meshFilter = _meshFilters[toDeleteKey];
_meshFilters.Remove(toDeleteKey);
_meshFilters[terrainMesh.Key] = meshFilter;
toDeleteGroups.RemoveAt(toDeleteIndex);
}
else
{
meshFilter = CreateMeshObject(options);
_meshFilters[terrainMesh.Key] = meshFilter;
}
}
ITerrainMesh2i triangleMesh = terrainMesh.Value;
UpdateMesh(triangleMesh, meshFilter.sharedMesh);
var collider = meshFilter.gameObject.GetComponent <MeshCollider>();
collider.sharedMesh = null;
collider.sharedMesh = meshFilter.sharedMesh;
meshIndex++;
}
foreach (var toDeleteGroup in toDeleteGroups)
{
_meshFilters[toDeleteGroup].gameObject.Destroy();
_meshFilters.Remove(toDeleteGroup);
}
}
}
}
private MeshFilter CreateMeshObject(IMeshContext options)
{
string name = string.Format("group_{0}", _meshFilters.Count);
var tile = options.GameObjectFactory != null?options.GameObjectFactory() : new GameObject();
tile.name = name;
tile.hideFlags = HideFlags.DontSave;
var meshFilter = tile.GetOrAddComponent <MeshFilter>();
tile.AddComponentIfMissing <MeshRenderer>();
tile.AddComponentIfMissing <MeshCollider>();
if (meshFilter.sharedMesh == null)
{
meshFilter.mesh = new Mesh();
}
var mesh = meshFilter.sharedMesh;
mesh.MarkDynamic();
return(meshFilter);
}
