static void CombineChildMeshes(MenuCommand cmd)
{
MeshFilter mf = cmd.context as MeshFilter;
var mesh = mf.sharedMesh;
var meshFilters = mf.GetComponentsInChildren <MeshFilter>().Where(i => i != mf).ToArray();
// var transform = mf.GetComponent<Transform>();
var tile = mf.GetComponent <Tile>();
var combine = new CombineInstance[meshFilters.Length];
for (int i = 0; i < meshFilters.Length; i++)
{
var c = meshFilters[i];
Debug.Log(c.gameObject.name);
var m = c.GetComponent <MeshFilter>().sharedMesh;
var t = c.GetComponent <Transform>();
var x = i % tile.rect.width;
var y = i / tile.rect.width;
var uv = new Vector2((float)x / tile.rect.width, (float)y / tile.rect.height);
m.uv = new Vector2[] { uv, uv, uv };
combine[i].mesh = m;
//https://answers.unity.com/questions/231249/instanced-meshes-are-being-offset-to-weird-positio.html
combine[i].transform = Matrix4x4.TRS(t.localPosition, t.localRotation, t.localScale);
}
mesh.colors = Enumerable.Range(0, mesh.triangles.Length / 3)
.SelectMany(i =>
{
return(new Color[] {
Color.red,
Color.green,
Color.blue
});
})
.ToArray();
mesh.CombineMeshes(combine, true, true, false);
mesh.RecalculateBounds();
mesh.RecalculateNormals();
mf.GetComponent <MeshRenderer>().enabled = true;
for (int i = 0; i < meshFilters.Length; i++)
{
UnityEngine.Object.DestroyImmediate(meshFilters[i].gameObject);
}
}