const Vector& position, int layer, Color color = Color(1.0,1.0,1.0));
/// Draws a color gradient onto the whole screen */
void draw_gradient(const Color& from, const Color& to, int layer);
/// Fills a rectangle.
void draw_filled_rect(const Vector& topleft, const Vector& size,
const Color& color, int layer);
const Vector& position, int layer, Color color = Color(1.0,1.0,1.0));
/// Draws a color gradient onto the whole screen */
void draw_gradient(const Color& from, const Color& to, int layer);
/// Fills a rectangle.
void draw_filled_rect(const Vector& topleft, const Vector& size,
const Color& color, int layer);