@@ 14,7 14,7 @@ 
 
 package net.dermetfan.jigsawPuzzle.puzzle;
 
-import com.badlogic.gdx.math.Polygon;
+import com.badlogic.gdx.math.Intersector;
 import com.badlogic.gdx.math.Vector2;
 import com.badlogic.gdx.scenes.scene2d.Actor;
 import com.badlogic.gdx.scenes.scene2d.Group;

          
@@ 115,9 115,6 @@ public class JigsawPuzzle {
 		/** the position of the piece on the puzzle (the {@link PolygonRegionDrawable#getPolygonX() minX} and {@link PolygonRegionDrawable#getPolygonY() minY} of its vertices) */
 		private float slotX, slotY;
 
-		/** temporary Polygon for internal use */
-		private final Polygon tmpPolygon = new Polygon();
-
 		public Piece(Drawable drawable) {
 			super(drawable);
 		}

          
@@ 138,9 135,8 @@ public class JigsawPuzzle {
 			Actor hit = super.hit(x, y, touchable);
 			PolygonRegionDrawable drawable = getDrawable() instanceof PolygonRegionDrawable ? (PolygonRegionDrawable) getDrawable() : null;
 			if(hit == this && drawable != null) {
-				tmpPolygon.setVertices(drawable.getRegion().getVertices());
-				tmpPolygon.setPosition(-slotX, -slotY);
-				if(!tmpPolygon.contains(x / getWidth() * drawable.getPolygonWidth(), y / getHeight() * drawable.getPolygonHeight()))
+				float[] vertices = drawable.getRegion().getVertices();
+				if(!Intersector.isPointInPolygon(vertices, 0, vertices.length, x / getWidth() * drawable.getPolygonWidth() + slotX, y / getHeight() * drawable.getPolygonHeight() + slotY))
 					return null;
 			}
 			return hit;