def test_hue_rotate_less_than_0():
im = util.fill((4, 4), [174, 56, 3])
hue_rotated_im = css.hue_rotate(im, -42)
hue_rotated_im2 = css.hue_rotate(im)
assert list(hue_rotated_im.getdata()) != list(hue_rotated_im2.getdata())
assert hue_rotated_im.size == im.size
assert hue_rotated_im.mode == im.mode
def test_hue_rotate_360():
im = util.fill((4, 4), [174, 56, 3])
hue_rotated_im = css.hue_rotate(im)
hue_rotated_im2 = css.hue_rotate(im, 360)
assert list(hue_rotated_im.getdata()) == list(hue_rotated_im2.getdata())
assert hue_rotated_im.size == im.size
assert hue_rotated_im.mode == im.mode
def test_hue_rotate_hsv():
im = util.fill((4, 4), [174, 56, 3])
im2 = im.convert('HSV')
hue_rotated_im = css.hue_rotate(im)
hue_rotated_im2 = css.hue_rotate(im2)
hue_rotated_im2_rgb = hue_rotated_im2.convert('RGB')
hue_rotated_im_data = list(hue_rotated_im.getdata())
hue_rotated_im2_rgb_data = list(hue_rotated_im2_rgb.getdata())
assert hue_rotated_im_data == hue_rotated_im2_rgb_data
assert hue_rotated_im2.size == im2.size
assert hue_rotated_im2.mode == im2.mode
def gingham(im):
"""Applies Gingham filter.
Arguments:
im: An input image.
Returns:
The output image.
"""
cb = util.or_convert(im, 'RGB')
cs = util.fill(cb.size, [230, 230, 250])
cr = css.blending.soft_light(cb, cs)
cr = css.brightness(cr, 1.05)
cr = css.hue_rotate(cr, -10)
return cr
def walden(im):
"""Applies Walden filter.
Arguments:
im: An input image.
Returns:
The output image.
"""
cb = util.or_convert(im, 'RGB')
cs = util.fill(cb.size, [0, 68, 204])
cs = ImageChops.screen(cb, cs)
cr = Image.blend(cb, cs, .3)
cr = css.brightness(cr, 1.1)
cr = css.hue_rotate(cr, -10)
cr = css.sepia(cr, .3)
cr = css.saturate(cr, 1.6)
return cr
def aden(im):
"""Applies Aden filter.
Arguments:
im: An input image.
Returns:
The output image.
"""
cb = util.or_convert(im, 'RGB')
cs = util.fill(cb.size, [66, 10, 14])
cs = ImageChops.darker(cb, cs)
alpha_mask = util.linear_gradient_mask(cb.size, start=.8)
cr = Image.composite(cs, cb, alpha_mask)
cr = css.hue_rotate(cr, -20)
cr = css.contrast(cr, .9)
cr = css.saturate(cr, .85)
cr = css.brightness(cr, 1.2)
return cr