gfxdraw_test.py 文件源码

def test_arc(self):
        """arc(surface, x, y, r, start, end, color): return None"""
        fg = self.foreground_color
        bg = self.background_color
        x = 45
        y = 40
        r = 30
        start = 0  # +x direction, but not (x + r, y) (?)
        end = 90   # -y direction, including (x, y + r)
        fg_test_points = [(x, y + r), (x + r, y + 1)]
        bg_test_points = [(x, y),
                          (x, y - r),
                          (x - r, y),
                          (x, y + r + 1),
                          (x, y + r - 1),
                          (x - 1, y + r),
                          (x + r + 1, y),
                          (x + r - 1, y),
                          (x + r, y)]
        for surf in self.surfaces:
            fg_adjusted = surf.unmap_rgb(surf.map_rgb(fg))
            bg_adjusted = surf.unmap_rgb(surf.map_rgb(bg))
            pygame.gfxdraw.arc(surf, x, y, r, start, end, fg)
            for posn in fg_test_points:
                self.check_at(surf, posn, fg_adjusted)
            for posn in bg_test_points:
                self.check_at(surf, posn, bg_adjusted)