/**
* Get the screen pixel for map coordinates
*
* @param out Point projected to screen coordinate
*/
public void toScreenPoint(double x, double y, Point out) {
double cs = mPos.scale * Tile.SIZE;
double cx = mPos.x * cs;
double cy = mPos.y * cs;
mv[0] = (float) (x * cs - cx);
mv[1] = (float) (y * cs - cy);
mv[2] = 0;
mv[3] = 1;
mViewProjMatrix.prj(mv);
out.x = (mv[0] * (mWidth / 2));
out.y = -(mv[1] * (mHeight / 2));
}
/**
* Get the map position for x,y in screen coordinates.
*
* @param x screen coordinate
* @param y screen coordinate
*/
public void fromScreenPoint(double x, double y, Point out) {
unprojectScreen(x, y, mu);
double cs = mPos.scale * Tile.SIZE;
double cx = mPos.x * cs;
double cy = mPos.y * cs;
double dx = cx + mu[0];
double dy = cy + mu[1];
dx /= cs;
dy /= cs;
while (dx > 1) dx -= 1;
while (dx < 0) dx += 1;
if (dy > 1) dy = 1;
else if (dy < 0) dy = 0;
out.x = dx;
out.y = dy;
}