if (letterboxcon == 1)
{
    letterboxtimer++;
    x1 = camerawidth() / 2;
    y1 = 0;
    x2 = camerawidth();
    y2 = 0;
    x3 = camerawidth();
    y3 = cameraheight() / 2;
    x4 = x1;
    y4 = y1;
}