al_draw_rotated_bitmap (3alleg5)

• #include <allegro5/allegro.h>
  
  void al_draw_rotated_bitmap(ALLEGRO_BITMAP *bitmap,
     float cx, float cy, float dx, float dy, float angle, int flags)
  
  

Draws a rotated version of the given bitmap to the target bitmap. The bitmap is rotated by \[aq]angle\[aq] radians clockwise.

The point at cx/cy relative to the upper left corner of the bitmap will be drawn at dx/dy and the bitmap is rotated around this point. If cx,cy is 0,0 the bitmap will rotate around its upper left corner.

\[bu]

cx - center x (relative to the bitmap)

\[bu]

cy - center y (relative to the bitmap)

\[bu]

dx - destination x

\[bu]

dy - destination y

\[bu]

angle - angle by which to rotate (radians)

\[bu]

flags - same as for al_draw_bitmap(3alleg5)

Example

• float w = al_get_bitmap_width(bitmap);
  float h = al_get_bitmap_height(bitmap);
  al_draw_rotated_bitmap(bitmap, w / 2, h / 2, x, y, ALLEGRO_PI / 2, 0);
  
  

The above code draws the bitmap centered on x/y and rotates it 90° clockwise.

al_draw_bitmap(3alleg5), al_draw_bitmap_region(3alleg5), al_draw_scaled_bitmap(3alleg5), al_draw_scaled_rotated_bitmap(3alleg5)