/// <summary>
/// Creates a Preview for the RuleTile.
/// </summary>
protected virtual void CreatePreview()
{
m_PreviewUtility = new PreviewRenderUtility(true);
m_PreviewUtility.camera.orthographic = true;
m_PreviewUtility.camera.orthographicSize = 2;
m_PreviewUtility.camera.transform.position = new Vector3(0, 0, -10);
var previewInstance = new GameObject();
m_PreviewGrid = previewInstance.AddComponent<Grid>();
m_PreviewUtility.AddSingleGO(previewInstance);
m_PreviewTilemaps = new List<Tilemap>();
m_PreviewTilemapRenderers = new List<TilemapRenderer>();
for (int i = 0; i < 4; i++)
{
var previewTilemapGo = new GameObject();
m_PreviewTilemaps.Add(previewTilemapGo.AddComponent<Tilemap>());
m_PreviewTilemapRenderers.Add(previewTilemapGo.AddComponent<TilemapRenderer>());
previewTilemapGo.transform.SetParent(previewInstance.transform, false);
}
for (int x = -2; x <= 0; x++)
for (int y = -1; y <= 1; y++)
m_PreviewTilemaps[0].SetTile(new Vector3Int(x, y, 0), tile);
for (int y = -1; y <= 1; y++)
m_PreviewTilemaps[1].SetTile(new Vector3Int(1, y, 0), tile);
for (int x = -2; x <= 0; x++)
m_PreviewTilemaps[2].SetTile(new Vector3Int(x, -2, 0), tile);
m_PreviewTilemaps[3].SetTile(new Vector3Int(1, -2, 0), tile);
}