def _rounded_rect(surface, color, rect, width, corner_radius):
backend.lock(surface)
rect.height -= width//2
rect.width -= width//2
diameter = corner_radius * 2
for offset, angles, corner in (((0, 0), (pi/2, pi), rect.topleft,),
((-diameter, 0), (0, pi/2), rect.topright),
((-diameter,-diameter), (3./2*pi, 2*pi), rect.bottomright),
((0, -diameter), (pi, 3./2*pi), rect.bottomleft),
):
corner = [a+b for a,b in zip(offset, corner)]
corner_rect = pygame.Rect(corner[0], corner[1], diameter, diameter)
backend.arc(surface, color, corner_rect, angles[0], angles[1], width)
line_dist = corner_radius
for p1, p2 in (((rect.topleft[0] + line_dist, rect.topleft[1]),
(rect.topright[0] - line_dist, rect.topright[1])),
((rect.topright[0], rect.topright[1] + line_dist),
(rect.bottomright[0], rect.bottomright[1] - line_dist)),
((rect.bottomright[0] - line_dist, rect.bottomright[1]),
(rect.bottomleft[0] + line_dist, rect.bottomleft[1])),
((rect.bottomleft[0], rect.bottomleft[1] - line_dist),
(rect.topleft[0], rect.topleft[1] + line_dist)),
):
backend.line(surface, color, p1, p2, width)
backend.unlock(surface)
def arc(surface, color, rect, angle_start, angle_stop, width=0):
rect = offset.rect_offset(rect)
return backend.arc(surface, color, rect, angle_start, angle_stop, width)
