def get_color(self, x, y):
line = self.pixels[y]
if self.pixelsize == 1:
pixel = line[x]
if self.palette:
return Color.from_pixel(self.palette[pixel])
else:
return Color.from_pixel([pixel])
else:
start = x * self.pixelsize
return Color.from_pixel(line[start:start+self.pixelsize])
def test_resize_bilinear_down_proportional(self):
img = image_factory([
[Red, Red, Blue],
[Red, Red, Blue],
[Blue, Blue, Blue],
])
img = img.resize(2, 2, resample_algorithm=bilinear)
self.assertImage(img, [
[Red, Color(64, 0, 191, 255)],
[Color(64, 0, 191, 255),
Color(16, 0, 239, 255)],
])
def test_resize_bilinear_down_proportional_transparent(self):
img = image_factory([
[Red, Red, transparent],
[Red, Red, transparent],
[transparent, transparent, transparent],
])
img = img.resize(2, 2, resample_algorithm=bilinear)
# - the alpha values get blended equally.
# - all non-alpha channels get multiplied by their alpha, so the
# transparent pixel does not contribute to the result.
self.assertImage(img, [
[Red, Color(255, 0, 0, 64)],
[Color(255, 0, 0, 64), Color(255, 0, 0, 16)],
])
def get_pixel(pixels, pixelsize, x, y, palette):
"""
Get the pixel in an image.
This returns a list of values, which depend on your mode.
"""
line = pixels[y]
if pixelsize == 1:
pixel = line[x]
if palette:
return Color.from_pixel(palette[pixel])
else:
return Color.from_pixel([pixel])
else:
start = x * pixelsize
return Color.from_pixel(line[start:start+pixelsize])
def _fill_reverse_palette(self):
self.reverse_palette = {}
if not self.palette:
return
for index, color in enumerate(self.palette):
color_obj = Color.from_pixel(color)
color_obj.to_hexcode()
self.reverse_palette[color_obj] = index
def _fill_reverse_palette(self):
self.reverse_palette = {}
if not self.palette:
return
for index, color in enumerate(self.palette):
color_obj = Color.from_pixel(color)
color_obj.to_hexcode()
self.reverse_palette[color_obj] = index
def test_resize_bilinear_down_simple_completely_transparent(self):
img = image_factory([
[transparent, transparent],
[transparent, transparent],
])
img = img.resize(1, 1, resample_algorithm=bilinear)
# testing this because a naive implementation can cause div/0 error
self.assertImage(img, [[Color(0, 0, 0, 0)]])
def test_resize_bilinear_down_simple_transparent(self):
img = image_factory([
[Red, Blue],
[Blue, transparent],
])
img = img.resize(1, 1, resample_algorithm=bilinear)
# - the alpha values get blended equally.
# - all non-alpha channels get multiplied by their alpha, so the
# transparent pixel does not contribute to the result.
self.assertImage(img, [[Color(85, 0, 170, 191)]])
def test_resize_bilinear_down_simple(self):
img = image_factory([
[Red, Blue],
[Blue, Green],
])
img = img.resize(1, 1, resample_algorithm=bilinear)
self.assertImage(
img,
[
# all the colors blended equally
[Color(64, 32, 128, 255)]
])
def test_resize_bilinear_up_proportional(self):
img = image_factory([
[Red, Blue],
[Blue, Green],
])
img = img.resize(3, 3, resample_algorithm=bilinear)
self.assertImage(img, [
[
Color(177, 4, 71, 255),
Color(106, 11, 128, 255),
Color(0, 21, 212, 255)
],
[
Color(106, 11, 128, 255),
Color(64, 32, 128, 255),
Color(0, 64, 128, 255)
],
[
Color(0, 21, 212, 255),
Color(0, 64, 128, 255),
Color(0, 128, 0, 255)
],
])
def test_from_hexcode(self):
c = Color.from_hexcode('feef1510')
self.assertEqual(ctuple(c), (254, 239, 21, 16))
c = Color.from_hexcode('123')
self.assertEqual(ctuple(c), (17, 34, 51, 255))
# DISCLAIMED. IN NO EVENT SHALL JONAS OBRIST BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
from pymaging import Image
from pymaging.formats import register
from pymaging.colors import Color
from pymaging.tests.test_basic import PymagingBaseTestCase
from pymaging.utils import get_test_file
from pymaging.webcolors import Black, White
from pymaging_jpg.jpg import JPG
ALMOST_BLACK = Color(8, 8, 8, 255)
class JPGTests(PymagingBaseTestCase):
def setUp(self):
register(JPG)
def test_decode(self):
img = Image.open_from_path(
get_test_file(__file__, 'black-white-100.jpg'))
self.assertImage(
img,
[
[Black, White],
[White, ALMOST_BLACK] # no clue why this is "almost" black
],
psd.header.height - (layer.bbox.y1 + start[1])
)
angle = math.atan2(start[1] - end[1], start[0] - end[0]) - 1.570796
offsets.write(
" Offset { pos: Vec2::<GLfloat> { x: %i.0, y: %i.0 }, angle: %f },\n" % (abs_pos[0], abs_pos[1], angle)
)
if x + psd.header.width > width:
y += psd.header.height
x = 0
else:
x += psd.header.width
offsets.write("];\n")
else:
atlas = Image.new(colors.RGBA, width, height, Color.from_hexcode("#00000000"))
metadata_filename = outpath + ".info"
metadata = open(metadata_filename, "w")
currentframe = None
for name, number, index, layer in frames:
if name != currentframe:
currentframe = name
metadata.write("%s frame %i offset = %i\n" % (name, number, index))
atlas.blit(y + layer.bbox.y1, x + layer.bbox.x1, layer.as_pymaging())
if x + psd.header.width > width:
y += psd.header.height
x = 0
psd.header.height - (layer.bbox.y1 + start[1]))
angle = math.atan2(start[1] - end[1], start[0] - end[0]) - 1.570796
offsets.write(
" Offset { pos: Vec2::<GLfloat> { x: %i.0, y: %i.0 }, angle: %f },\n"
% (abs_pos[0], abs_pos[1], angle))
if x + psd.header.width > width:
y += psd.header.height
x = 0
else:
x += psd.header.width
offsets.write("];\n")
else:
atlas = Image.new(colors.RGBA, width, height,
Color.from_hexcode("#00000000"))
metadata_filename = outpath + ".info"
metadata = open(metadata_filename, "w")
currentframe = None
for name, number, index, layer in frames:
if name != currentframe:
currentframe = name
metadata.write("%s frame %i offset = %i\n" % (name, number, index))
atlas.blit(y + layer.bbox.y1, x + layer.bbox.x1, layer.as_pymaging())
if x + psd.header.width > width:
y += psd.header.height
x = 0
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL JONAS OBRIST BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
from pymaging.tests.test_basic import PymagingBaseTestCase, image_factory
from pymaging.colors import Color
from pymaging.webcolors import Red, Green, Blue
from pymaging.resample import bilinear
transparent = Color(0, 0, 0, 0)
class NearestResamplingTests(PymagingBaseTestCase):
def test_resize_nearest_down(self):
img = image_factory([
[Red, Green, Blue],
[Green, Blue, Red],
[Blue, Red, Green],
])
img = img.resize(2, 2)
self.assertImage(img, [
[Red, Blue],
[Blue, Green],
])
def test_color_mix_with(self):
base = Red
color = Lime.get_for_brightness(0.5)
result = base.cover_with(color)
self.assertEqual(result, Color(128, 127, 0, 255))
def test_alpha_mixing(self):
img = image_factory([[Red]])
semi_transparent_green = Lime.get_for_brightness(0.5)
img.draw(Pixel(0, 0), semi_transparent_green)
result = img.get_color(0, 0)
self.assertEqual(result, Color(128, 127, 0, 255))
def working_cover_with(self, cover_color):
try:
return old_cover_with(self, cover_color)
except ZeroDivisionError:
return Color(0, 0, 0, 0)
def get_color(self, x, y):
return Color.from_pixel(self.get_pixel(x, y))
def test_from_pixel(self):
c = Color.from_pixel([10, 20, 30])
self.assertEqual(ctuple(c), (10, 20, 30, 255))
c = Color.from_pixel([10, 20, 30, 40])
self.assertEqual(ctuple(c), (10, 20, 30, 40))
def test_from_hexcode(self):
c = Color.from_hexcode('feef1510')
self.assertEqual(ctuple(c), (254, 239, 21, 16))
c = Color.from_hexcode('123')
self.assertEqual(ctuple(c), (17, 34, 51, 255))
def test_from_pixel(self):
c = Color.from_pixel([10, 20, 30])
self.assertEqual(ctuple(c), (10, 20, 30, 255))
c = Color.from_pixel([10, 20, 30, 40])
self.assertEqual(ctuple(c), (10, 20, 30, 40))
def test_constructor(self):
c = Color(10, 20, 30)
self.assertEqual(c.red, 10)
self.assertEqual(c.alpha, 255)
def get_color(self, x, y):
return Color.from_pixel(self.get_pixel(x, y))
# # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE # DISCLAIMED. IN NO EVENT SHALL JONAS OBRIST BE LIABLE FOR ANY # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. from pymaging.colors import Color # List of web color names taken from http://en.wikipedia.org/wiki/Web_colors IndianRed = Color(205, 92, 92, 255) LightCoral = Color(240, 128, 128, 255) Salmon = Color(250, 128, 114, 255) DarkSalmon = Color(233, 150, 122, 255) LightSalmon = Color(255, 160, 122, 255) Red = Color(255, 0, 0, 255) Crimson = Color(220, 20, 60, 255) FireBrick = Color(178, 34, 34, 255) DarkRed = Color(139, 0, 0, 255) Pink = Color(255, 192, 203, 255) LightPink = Color(255, 182, 193, 255) HotPink = Color(255, 105, 180, 255) DeepPink = Color(255, 20, 147, 255) MediumVioletRed = Color(199, 21, 133, 255) PaleVioletRed = Color(219, 112, 147, 255) LightSalmon = Color(255, 160, 122, 255)
