def test_rgb(self):
self.assertEqual(Hex('#f00'), Hex('#ff0000'))
self.assertEqual(Hex('#ff0000'), Rgb(255, 0, 0))
self.assertEqual(Rgb(255, 0, 0), Rgb(Pr(100), Pr(0), Pr(0)))
self.assertEqual(Rgb(Pr(100), Pr(0), Pr(0)), Hex('#f00'))
self.assertEqual(Rgb(255, 0, 0), Rgba(255, 0, 0, 1))
self.assertEqual(Rgb(Pr(100), Pr(0), Pr(0)), Rgba(255, 0, 0, 1))
def mix(color, color1, weight=Pr(50)):
"""Mixes two colors together"""
p = weight.value / 100.0
w = p * 2 - 1
a = color.a - color1.a
w1 = ((w if w * a == -1 else (w + a) / (1 + w * a)) + 1) / 2.0
w2 = 1 - w1
r = color.r * w1 + color1.r * w2
g = color.g * w1 + color1.g * w2
b = color.b * w1 + color1.b * w2
a = color.a * p + color1.a * (1 - p)
return Color(r, g, b, a)
def spinin(color, value=Pr(10)):
"""Changes the hue of a color."""
color = Color(color)
color.h += value
return color
def percentage(value):
"""Converts a unitless number to a percentage."""
return Pr(value)
def fadeout(color, value=Pr(10)):
"""Add or change an alpha layer for any color value."""
color = Color(color)
color.a -= value
return color
def desaturate(color, value=Pr(10)):
"""Makes a color less saturated."""
color = Color(color)
color.s -= value
return color
def saturate(color, value=Pr(10)):
"""Makes a color more saturated."""
color = Color(color)
color.s += value
return color
def darken(color, value=Pr(10)):
"""Makes a color darker."""
color = Color(color)
color.l -= value
return color
def lighten(color, value=Pr(10)):
"""Makes a color lighten."""
color = Color(color)
color.l += value
return color
def test_hls(self):
self.assertEqual(Hsl(120, Pr(100), Pr(50)),
Hsla(120, Pr(100), Pr(50), 1))