al_draw_rotated_bitmap(3)al_draw_rotated_bitmap(3)NAMEal_draw_rotated_bitmap - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
void al_draw_rotated_bitmap(ALLEGRO_BITMAP *bitmap,
float cx, float cy, float dx, float dy, float angle, int flags)
DESCRIPTION
Draws a rotated version of the given bitmap to the target bitmap. The
bitmap is rotated by 'angle' 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.
· cx - center x (relative to the bitmap)
· cy - center y (relative to the bitmap)
· dx - destination x
· dy - destination y
· angle - angle by which to rotate
· flags - same as for al_draw_bitmap(3)
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.
SEE ALSOal_draw_bitmap(3), al_draw_bitmap_region(3), al_draw_scaled_bitmap(3),
al_draw_scaled_rotated_bitmap(3)Allegro reference manualal_draw_rotated_bitmap(3)
