Merge pull request #151 from NASA-AMMOS/fix-premultiply

Parent transform multiply -> premultiply

src/three/TilesRenderer.js

@@ -399,7 +399,7 @@ export class TilesRenderer extends TilesRendererBase {
 
 		if ( parentTile ) {
 
-			transform.multiply( parentTile.cached.transform );
+			transform.premultiply( parentTile.cached.transform );
 
 		}