pg.translate(0, (float )radius);
// draw the ground (background)
pg.fill(COLOR_GROUND);
pg.rect(0, (float )-radius, content.getWidth(), content.getHeight());
// draw the sky (pitch input)
pg.fill(COLOR_SKY);
if (Math.cos(pitchAngle) > 0) {
pg.rect(0, (float )(Math.sin(pitchAngle) * radius), content.getWidth(), -content.getHeight());
}
else {
pg.rect(0, (float )-(Math.sin(pitchAngle) * radius), content.getWidth(), content.getHeight());