Fix active tile transforms (#1627)

* Fix active tile transforms

* Update comment

Author: gkjohnson

src/three/renderer/tiles/TilesGroup.js

@@ -79,6 +79,35 @@ export class TilesGroup extends Group {
 
 				}
 
+				// update the active tile scenes so they are up to date, as well. We iterate over all
+				// children above because plugins etc may add other objects.
+				const { tilesRenderer } = this;
+				const { activeTiles, visibleTiles } = tilesRenderer;
+				activeTiles.forEach( tile => {
+
+					if ( ! visibleTiles.has( tile ) ) {
+
+						const { scene } = tile.engineData;
+						scene.traverse( c => {
+
+							c.updateMatrix();
+							c.matrixWorld.copy( c.matrix );
+							if ( c.parent ) {
+
+								c.matrixWorld.premultiply( c.parent.matrixWorld );
+
+							} else {
+
+								c.matrixWorld.premultiply( this.matrixWorld );
+
+							}
+
+						} );
+
+					}
+
+				} );
+
 			}
 
 		}

src/three/renderer/tiles/TilesRenderer.js

@@ -935,6 +935,36 @@ export class TilesRenderer extends TilesRendererBase {
 
 	}
 
+	setTileActive( tile, active ) {
+
+		const scene = tile.engineData.scene;
+		const group = this.group;
+
+		if ( scene ) {
+
+			// update matrices for the tile scene
+			scene.traverse( c => {
+
+				c.updateMatrix();
+				c.matrixWorld.copy( c.matrix );
+				if ( c.parent ) {
+
+					c.matrixWorld.premultiply( c.parent.matrixWorld );
+
+				} else {
+
+					c.matrixWorld.premultiply( group.matrixWorld );
+
+				}
+
+			} );
+
+		}
+
+		super.setTileActive( tile, active );
+
+	}
+
 	setTileVisible( tile, visible ) {
 
 		const scene = tile.engineData.scene;
@@ -945,7 +975,6 @@ export class TilesRenderer extends TilesRendererBase {
 			if ( scene ) {
 
 				group.add( scene );
-				scene.updateMatrixWorld( true );
 
 			}