- rename class Tiles -> TileSet

- cleanup + comments

src/org/oscim/renderer/overlays/OverlayText.java

@@ -20,7 +20,7 @@ import org.oscim.core.Tile;
 import org.oscim.renderer.GLRenderer;
 import org.oscim.renderer.MapTile;
 import org.oscim.renderer.TileManager;
-import org.oscim.renderer.Tiles;
+import org.oscim.renderer.TileSet;
 import org.oscim.renderer.layer.TextItem;
 import org.oscim.renderer.layer.TextLayer;
 import org.oscim.utils.FastMath;
@@ -34,7 +34,7 @@ import android.util.FloatMath;
 
 public class OverlayText extends RenderOverlay {
 
-	private Tiles tiles;
+	private TileSet tiles;
 	private LabelThread mThread;
 
 	private MapPosition mWorkPos;

src/org/oscim/renderer/overlays/RenderOverlay.java

@@ -46,6 +46,8 @@ public abstract class RenderOverlay {
 
 	public BufferObject vbo;
 
+	protected float[] mvp = new float[16];
+
 	public RenderOverlay(MapView mapView) {
 		mMapView = mapView;
 		mMapPosition = new MapPosition();
@@ -68,7 +70,7 @@ public abstract class RenderOverlay {
 	 * @param positionChanged
 	 *            true when MapPosition has changed
 	 * @param tilesChanged
-	 *            true when loaded tiles changed
+	 *            true when current tiles changed
 	 */
 	public synchronized void update(MapPosition curPos, boolean positionChanged,
 			boolean tilesChanged) {
@@ -86,8 +88,15 @@ public abstract class RenderOverlay {
 		// }
 	}
 
-	float[] mvp = new float[16];
-
+	/**
+	 * Default overlay render function
+	 * @param pos
+	 *            current MapPosition
+	 * @param mv
+	 *            current model-view matrix
+	 * @param proj
+	 *            current projection matrix
+	 */
 	public synchronized void render(MapPosition pos, float[] mv, float[] proj) {
 		float div = setMatrix(pos, mv);
 
@@ -105,8 +114,6 @@ public abstract class RenderOverlay {
 			}
 		}
 
-		// float scale = curPos.scale / div;
-
 		for (Layer l = layers.textureLayers; l != null;) {
 
 			l = TextureRenderer.draw(l, (mMapPosition.scale / pos.scale) * div, proj, mv,