/**
* Adds the Bottom-Face Vertices
* @param vertices
*/
private void addBottomVertices(List<TexturedVertex> vertices){
vertices.add(new TexturedVertex(x, y-1, z, id));
vertices.add(new TexturedVertex(x, y-1, z-1, id));
vertices.add(new TexturedVertex(x+1, y-1, z-1, id));
//vertices.add(new TexturedVertex(x+1, y-1, z-1, id));
vertices.add(new TexturedVertex(x+1, y-1, z, id));
//vertices.add(new TexturedVertex(x, y-1, z, id));
}