def test_fx_red(ctx):
#img = Image.new((64, 64)) # TODO make the gradient, oops
black = RGBColor(0., 0., 0.)
white = RGBColor(1., 1., 1.)
img = gradient((64, 64), black, white)
img = image_filter(lambda *a: black)(*img, channel=Channel.blue | Channel.green)
ctx.compare(img, 'fx_red.miff')
def color(self):
# XXX this needs to do something special to handle non-rgba images
if self._pixel == ffi.NULL:
raise ValueError("Pixel has expired")
array = ffi.new("double[]", 4)
lib.sanpera_pixel_to_doubles(self._pixel, array)
return RGBColor(*array)
def new(cls, size, fill=None):
"""Create a new image (with one frame) of the given size."""
size = Size.coerce(size)
image_info = blank_image_info()
magick_pixel = blank_magick_pixel()
if fill is None:
# TODO need a way to explicitly create a certain color
fill = RGBColor(0., 0., 0., 0.)
fill._populate_magick_pixel(magick_pixel)
ptr = lib.NewMagickImage(image_info, size.width, size.height, magick_pixel)
magick_raise(ptr.exception)
return cls(ptr)
def new(cls, size, fill=None):
"""Create a new image (with one frame) of the given size."""
size = Size.coerce(size)
image_info = blank_image_info()
magick_pixel = blank_magick_pixel()
if fill is None:
# TODO need a way to explicitly create a certain color
fill = RGBColor(0., 0., 0., 0.)
fill._populate_magick_pixel(magick_pixel)
ptr = lib.NewMagickImage(image_info, size.width, size.height,
magick_pixel)
magick_raise(ptr.exception)
return cls(ptr)
def test_color_fx_math(ctx):
gold = RGBColor.parse('gold')
def gold_filter(self, *a):
return gold * 0.7
img = get_image('test.png')
img[0].translucent = False
img = evaluate(gold_filter, *img)
ctx.compare(img, 'color_fx_math.miff')
def test_color_fx_constant(ctx):
gold = RGBColor.parse('gold')
def gold_filter(self, *a):
return gold
img = get_image('test.png')
img[0].translucent = False
img = evaluate(gold_filter, *img)
ctx.compare(img, 'color_fx_constant.miff')
def test_color_fx_constant(ctx):
gold = RGBColor.parse('gold')
@image_filter
def gold_filter(self, *a):
return gold
img = get_image('test.png')
img[0].translucent = False
img = gold_filter(*img)
ctx.compare(img, 'color_fx_constant.miff')
def test_color_fx_math(ctx):
gold = RGBColor.parse('gold')
@image_filter
def gold_filter(self, *a):
return gold * 0.7
img = get_image('test.png')
img[0].translucent = False
img = gold_filter(*img)
ctx.compare(img, 'color_fx_math.miff')
def __getitem__(self, point):
point = Vector.coerce(point)
px = ffi.new("PixelPacket *")
# TODO retval is t/f
with magick_try() as exc:
lib.GetOneCacheViewAuthenticPixel(self._ptr, point.x, point.y, px,
exc.ptr)
array = ffi.new("double[]", 4)
lib.sanpera_pixel_to_doubles(px, array)
return RGBColor(*array)
def test_pixel_iter():
"""Does iterating over pixels appear to work?"""
img = Image.read(util.find_image('terminal.gif'))
pixel_iter = iter(img[0].pixels)
white = RGBColor(1., 1., 1.)
px = next(pixel_iter)
assert px.point == Vector(0, 0)
assert px.color == white
px = next(pixel_iter)
assert px.point == Vector(1, 0)
assert px.color == white
def test_wheat(ctx):
img = Image.new((100, 100), fill=RGBColor.parse('wheat'))
ctx.compare(img, 'canvas_wheat.miff')
def test_fx_navy(ctx):
img = Image.new((64, 64), fill=RGBColor(0., 0., 0.))
gray = RGBColor(0.5, 0.5, 0.5)
img = image_filter(lambda *a: gray)(*img, channel=Channel.blue)
ctx.compare(img, 'fx_navy.miff')
def test_khaki_to_tomato(ctx):
img = Image.new((100, 100), fill=RGBColor.parse('khaki'))
img[0].replace_color(RGBColor.parse('khaki'), RGBColor.parse('tomato'))
ctx.compare(img, 'canvas_opaque.miff')
def test_wheat(ctx):
img = Image.new((100, 100), fill=RGBColor.parse('wheat'))
ctx.compare(img, 'canvas_wheat.miff')
def test_khaki(ctx):
img = Image.new((100, 100), fill=RGBColor.parse('khaki'))
ctx.compare(img, 'canvas_khaki.miff')
def test_khaki(ctx):
img = Image.new((100, 100), fill=RGBColor.parse('khaki'))
ctx.compare(img, 'canvas_khaki.miff')
def test_pixel_get():
"""Does random pixel inspection work?"""
img = Image.read(util.find_image('terminal.gif'))
assert img[0].pixels[11, 6] == RGBColor(1., 0., 0.)
def test_khaki_to_tomato(ctx):
img = Image.new((100, 100), fill=RGBColor.parse('khaki'))
img[0].replace_color(RGBColor.parse('khaki'), RGBColor.parse('tomato'))
ctx.compare(img, 'canvas_opaque.miff')
def test_color_colorize(ctx):
img = get_image('test.png')
img[0].translucent = False
img = Colorize(RGBColor.parse('sienna'), 1.0)(*img)
ctx.compare(img, 'color_colorize.miff')
def test_color_colorize(ctx):
img = get_image('test.png')
img[0].translucent = False
img = Colorize(RGBColor.parse('sienna'), 1.0)(*img)
ctx.compare(img, 'color_colorize.miff')
