View difference between Paste ID: wKyd1tXG and EaSpWrHP

 //x, y and zoom to get the tile, the edge belongs to
 //hOffset: horizontal offset from the generated maps center to the edge
 //vOffset: vertical offset from the generated maps center to the edge
 private double[] getTilesEdge(int x, int y, int zoom, int hOffset, int vOffset) {
         double[] result = new double[2];
         double lngCenter = x/Math.pow(2,zoom)*360.0-180.0; //langitude of the center of the edge tile
         double latCenter = Math.toDegrees(Math.atan(Math.sinh(Math.PI-2*y/Math.pow(2,zoom)))); //latitude of the center of the edge tile
-        int xPos = 128+hOffset;
+        int xPos = 128+(-1)*hOffset;
-        int yPos = 128+vOffset;
+        int yPos = 128+(-1)*vOffset;
         result [0] = //to do: latitude of the edge
         result [1] = //to do: langitude of the edge
         return result;
 }