gfxdraw_test.py 文件源码

def test_textured_polygon(self):
        """textured_polygon(surface, points, texture, tx, ty): return None"""
        w, h = self.default_size
        fg = self.foreground_color
        bg = self.background_color
        tx = 0
        ty = 0
        texture = pygame.Surface((w + tx, h + ty), 0, 24)
        texture.fill(fg, (0, 0, w, h))
        points = [(10, 80), (10, 15), (92, 25), (92, 80)]
        # Don't know how to really check this as boarder points may
        # or may not be included in the textured polygon.
        fg_test_points = [(points[1][0] + 30, points[1][1] + 40)]
        bg_test_points = [(points[0][0] - 1, points[0][1]),
                          (points[0][0], points[0][1] + 1),
                          (points[0][0] - 1, points[0][1] + 1),
                          (points[3][0] + 1, points[3][1]),
                          (points[3][0], points[3][1] + 1),
                          (points[3][0] + 1, points[3][1] + 1),
                          (points[2][0] + 1, points[2][1]),
                          (points[1][0] - 1, points[1][1]),
                          (points[1][0], points[1][1] - 1),
                          (points[1][0] - 1, points[1][1] - 1)]
        for surf in self.surfaces[1:]:
            fg_adjusted = surf.unmap_rgb(surf.map_rgb(fg))
            bg_adjusted = surf.unmap_rgb(surf.map_rgb(bg))
            pygame.gfxdraw.textured_polygon(surf, points, texture, -tx, -ty)
            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)

        # Alpha blit to 8 bits-per-pixel surface forbidden.
        texture = pygame.Surface(self.default_size, SRCALPHA, 32)
        self.failUnlessRaises(ValueError,
                              pygame.gfxdraw.textured_polygon,
                              self.surfaces[0],
                              points,
                              texture, 0, 0)