color_test.py 文件源码

def test_sub (self):
        c1 = pygame.Color (0xFFFFFFFF)
        self.assertEquals (c1.r, 255)
        self.assertEquals (c1.g, 255)
        self.assertEquals (c1.b, 255)
        self.assertEquals (c1.a, 255)

        c2 = pygame.Color (20, 33, 82, 193)
        self.assertEquals (c2.r, 20)
        self.assertEquals (c2.g, 33)
        self.assertEquals (c2.b, 82)
        self.assertEquals (c2.a, 193)

        c3 = c1 - c2
        self.assertEquals (c3.r, 235)
        self.assertEquals (c3.g, 222)
        self.assertEquals (c3.b, 173)
        self.assertEquals (c3.a, 62)

        c3 = c3 - c2
        self.assertEquals (c3.r, 215)
        self.assertEquals (c3.g, 189)
        self.assertEquals (c3.b, 91)
        self.assertEquals (c3.a, 0)