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623 lines
20 KiB
Python
623 lines
20 KiB
Python
import os.path
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from helper import PillowTestCase, hopper, unittest
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from PIL import Image, ImageColor, ImageDraw
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BLACK = (0, 0, 0)
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WHITE = (255, 255, 255)
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GRAY = (190, 190, 190)
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DEFAULT_MODE = 'RGB'
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IMAGES_PATH = os.path.join('Tests', 'images', 'imagedraw')
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# Image size
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W, H = 100, 100
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# Bounding box points
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X0 = int(W / 4)
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X1 = int(X0 * 3)
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Y0 = int(H / 4)
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Y1 = int(X0 * 3)
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# Two kinds of bounding box
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BBOX1 = [(X0, Y0), (X1, Y1)]
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BBOX2 = [X0, Y0, X1, Y1]
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# Two kinds of coordinate sequences
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POINTS1 = [(10, 10), (20, 40), (30, 30)]
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POINTS2 = [10, 10, 20, 40, 30, 30]
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KITE_POINTS = [(10, 50), (70, 10), (90, 50), (70, 90), (10, 50)]
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class TestImageDraw(PillowTestCase):
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def test_sanity(self):
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im = hopper("RGB").copy()
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draw = ImageDraw.ImageDraw(im)
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draw = ImageDraw.Draw(im)
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draw.ellipse(list(range(4)))
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draw.line(list(range(10)))
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draw.polygon(list(range(100)))
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draw.rectangle(list(range(4)))
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def test_valueerror(self):
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im = Image.open("Tests/images/chi.gif")
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draw = ImageDraw.Draw(im)
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draw.line(((0, 0)), fill=(0, 0, 0))
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def test_mode_mismatch(self):
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im = hopper("RGB").copy()
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self.assertRaises(ValueError, ImageDraw.ImageDraw, im, mode="L")
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def helper_arc(self, bbox, start, end):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.arc(bbox, start, end)
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# Assert
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self.assert_image_similar(
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im, Image.open("Tests/images/imagedraw_arc.png"), 1)
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def test_arc1(self):
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self.helper_arc(BBOX1, 0, 180)
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self.helper_arc(BBOX1, 0.5, 180.4)
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def test_arc2(self):
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self.helper_arc(BBOX2, 0, 180)
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self.helper_arc(BBOX2, 0.5, 180.4)
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def test_arc_end_le_start(self):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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start = 270.5
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end = 0
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# Act
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draw.arc(BBOX1, start=start, end=end)
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_arc_end_le_start.png"))
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def test_arc_no_loops(self):
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# No need to go in loops
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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start = 5
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end = 370
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# Act
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draw.arc(BBOX1, start=start, end=end)
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# Assert
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self.assert_image_similar(
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im, Image.open("Tests/images/imagedraw_arc_no_loops.png"), 1)
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def test_bitmap(self):
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# Arrange
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small = Image.open("Tests/images/pil123rgba.png").resize((50, 50))
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.bitmap((10, 10), small)
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_bitmap.png"))
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def helper_chord(self, mode, bbox, start, end):
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# Arrange
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im = Image.new(mode, (W, H))
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draw = ImageDraw.Draw(im)
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expected = "Tests/images/imagedraw_chord_{}.png".format(mode)
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# Act
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draw.chord(bbox, start, end, fill="red", outline="yellow")
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# Assert
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self.assert_image_similar(im, Image.open(expected), 1)
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def test_chord1(self):
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for mode in ["RGB", "L"]:
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self.helper_chord(mode, BBOX1, 0, 180)
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self.helper_chord(mode, BBOX1, 0.5, 180.4)
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def test_chord2(self):
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for mode in ["RGB", "L"]:
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self.helper_chord(mode, BBOX2, 0, 180)
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self.helper_chord(mode, BBOX2, 0.5, 180.4)
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def helper_ellipse(self, mode, bbox):
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# Arrange
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im = Image.new(mode, (W, H))
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draw = ImageDraw.Draw(im)
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expected = "Tests/images/imagedraw_ellipse_{}.png".format(mode)
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# Act
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draw.ellipse(bbox, fill="green", outline="blue")
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# Assert
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self.assert_image_similar(im, Image.open(expected), 1)
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def test_ellipse1(self):
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for mode in ["RGB", "L"]:
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self.helper_ellipse(mode, BBOX1)
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def test_ellipse2(self):
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for mode in ["RGB", "L"]:
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self.helper_ellipse(mode, BBOX2)
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def test_ellipse_edge(self):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.ellipse(((0, 0), (W-1, H)), fill="white")
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# Assert
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self.assert_image_similar(
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im, Image.open("Tests/images/imagedraw_ellipse_edge.png"), 1)
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def test_ellipse_symmetric(self):
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for bbox in [
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(25, 25, 76, 76),
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(25, 25, 75, 75)
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]:
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im = Image.new("RGB", (101, 101))
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draw = ImageDraw.Draw(im)
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draw.ellipse(bbox, fill="green", outline="blue")
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self.assert_image_equal(im, im.transpose(Image.FLIP_LEFT_RIGHT))
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def helper_line(self, points):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.line(points, fill="yellow", width=2)
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_line.png"))
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def test_line1(self):
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self.helper_line(POINTS1)
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def test_line2(self):
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self.helper_line(POINTS2)
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def test_shape1(self):
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# Arrange
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im = Image.new("RGB", (100, 100), "white")
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draw = ImageDraw.Draw(im)
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x0, y0 = 5, 5
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x1, y1 = 5, 50
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x2, y2 = 95, 50
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x3, y3 = 95, 5
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# Act
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s = ImageDraw.Outline()
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s.move(x0, y0)
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s.curve(x1, y1, x2, y2, x3, y3)
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s.line(x0, y0)
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draw.shape(s, fill=1)
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_shape1.png"))
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def test_shape2(self):
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# Arrange
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im = Image.new("RGB", (100, 100), "white")
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draw = ImageDraw.Draw(im)
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x0, y0 = 95, 95
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x1, y1 = 95, 50
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x2, y2 = 5, 50
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x3, y3 = 5, 95
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# Act
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s = ImageDraw.Outline()
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s.move(x0, y0)
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s.curve(x1, y1, x2, y2, x3, y3)
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s.line(x0, y0)
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draw.shape(s, outline="blue")
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_shape2.png"))
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def helper_pieslice(self, bbox, start, end):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.pieslice(bbox, start, end, fill="white", outline="blue")
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# Assert
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self.assert_image_similar(
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im, Image.open("Tests/images/imagedraw_pieslice.png"), 1)
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def test_pieslice1(self):
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self.helper_pieslice(BBOX1, -90, 45)
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self.helper_pieslice(BBOX1, -90.5, 45.4)
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def test_pieslice2(self):
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self.helper_pieslice(BBOX2, -90, 45)
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self.helper_pieslice(BBOX2, -90.5, 45.4)
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def helper_point(self, points):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.point(points, fill="yellow")
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_point.png"))
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def test_point1(self):
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self.helper_point(POINTS1)
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def test_point2(self):
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self.helper_point(POINTS2)
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def helper_polygon(self, points):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.polygon(points, fill="red", outline="blue")
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_polygon.png"))
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def test_polygon1(self):
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self.helper_polygon(POINTS1)
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def test_polygon2(self):
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self.helper_polygon(POINTS2)
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def test_polygon_kite(self):
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# Test drawing lines of different gradients (dx>dy, dy>dx) and
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# vertical (dx==0) and horizontal (dy==0) lines
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for mode in ["RGB", "L"]:
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# Arrange
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im = Image.new(mode, (W, H))
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draw = ImageDraw.Draw(im)
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expected = "Tests/images/imagedraw_polygon_kite_{}.png".format(
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mode)
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# Act
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draw.polygon(KITE_POINTS, fill="blue", outline="yellow")
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# Assert
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self.assert_image_equal(im, Image.open(expected))
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def helper_rectangle(self, bbox):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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# Act
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draw.rectangle(bbox, fill="black", outline="green")
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_rectangle.png"))
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def test_rectangle1(self):
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self.helper_rectangle(BBOX1)
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def test_rectangle2(self):
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self.helper_rectangle(BBOX2)
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def test_big_rectangle(self):
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# Test drawing a rectangle bigger than the image
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# Arrange
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im = Image.new("RGB", (W, H))
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bbox = [(-1, -1), (W+1, H+1)]
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draw = ImageDraw.Draw(im)
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expected = "Tests/images/imagedraw_big_rectangle.png"
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# Act
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draw.rectangle(bbox, fill="orange")
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# Assert
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self.assert_image_similar(im, Image.open(expected), 1)
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def test_floodfill(self):
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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draw.rectangle(BBOX2, outline="yellow", fill="green")
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centre_point = (int(W/2), int(H/2))
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red = ImageColor.getrgb("red")
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im_floodfill = Image.open("Tests/images/imagedraw_floodfill.png")
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# Act
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ImageDraw.floodfill(im, centre_point, red)
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# Assert
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self.assert_image_equal(im, im_floodfill)
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# Test that using the same colour does not change the image
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ImageDraw.floodfill(im, centre_point, red)
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self.assert_image_equal(im, im_floodfill)
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# Test that filling outside the image does not change the image
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ImageDraw.floodfill(im, (W, H), red)
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self.assert_image_equal(im, im_floodfill)
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def test_floodfill_border(self):
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# floodfill() is experimental
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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draw.rectangle(BBOX2, outline="yellow", fill="green")
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centre_point = (int(W/2), int(H/2))
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# Act
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ImageDraw.floodfill(
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im, centre_point, ImageColor.getrgb("red"),
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border=ImageColor.getrgb("black"))
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_floodfill2.png"))
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def test_floodfill_thresh(self):
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# floodfill() is experimental
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# Arrange
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im = Image.new("RGB", (W, H))
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draw = ImageDraw.Draw(im)
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draw.rectangle(BBOX2, outline="darkgreen", fill="green")
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centre_point = (int(W/2), int(H/2))
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# Act
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ImageDraw.floodfill(
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im, centre_point, ImageColor.getrgb("red"),
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thresh=30)
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# Assert
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self.assert_image_equal(
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im, Image.open("Tests/images/imagedraw_floodfill2.png"))
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def create_base_image_draw(self, size,
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mode=DEFAULT_MODE,
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background1=WHITE,
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background2=GRAY):
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img = Image.new(mode, size, background1)
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for x in range(0, size[0]):
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for y in range(0, size[1]):
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if (x + y) % 2 == 0:
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img.putpixel((x, y), background2)
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return (img, ImageDraw.Draw(img))
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def test_square(self):
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expected = Image.open(os.path.join(IMAGES_PATH, 'square.png'))
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expected.load()
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img, draw = self.create_base_image_draw((10, 10))
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draw.polygon([(2, 2), (2, 7), (7, 7), (7, 2)], BLACK)
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self.assert_image_equal(img, expected,
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'square as normal polygon failed')
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img, draw = self.create_base_image_draw((10, 10))
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draw.polygon([(7, 7), (7, 2), (2, 2), (2, 7)], BLACK)
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self.assert_image_equal(img, expected,
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'square as inverted polygon failed')
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img, draw = self.create_base_image_draw((10, 10))
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draw.rectangle((2, 2, 7, 7), BLACK)
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self.assert_image_equal(img, expected,
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'square as normal rectangle failed')
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img, draw = self.create_base_image_draw((10, 10))
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draw.rectangle((7, 7, 2, 2), BLACK)
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self.assert_image_equal(
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img, expected, 'square as inverted rectangle failed')
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def test_triangle_right(self):
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expected = Image.open(os.path.join(IMAGES_PATH, 'triangle_right.png'))
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expected.load()
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img, draw = self.create_base_image_draw((20, 20))
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draw.polygon([(3, 5), (17, 5), (10, 12)], BLACK)
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self.assert_image_equal(img, expected, 'triangle right failed')
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def test_line_horizontal(self):
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expected = Image.open(os.path.join(IMAGES_PATH,
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'line_horizontal_w2px_normal.png'))
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expected.load()
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img, draw = self.create_base_image_draw((20, 20))
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draw.line((5, 5, 14, 5), BLACK, 2)
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self.assert_image_equal(
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img, expected, 'line straight horizontal normal 2px wide failed')
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expected = Image.open(os.path.join(IMAGES_PATH,
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'line_horizontal_w2px_inverted.png'))
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expected.load()
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img, draw = self.create_base_image_draw((20, 20))
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draw.line((14, 5, 5, 5), BLACK, 2)
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self.assert_image_equal(
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img, expected, 'line straight horizontal inverted 2px wide failed')
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expected = Image.open(os.path.join(IMAGES_PATH,
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'line_horizontal_w3px.png'))
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expected.load()
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img, draw = self.create_base_image_draw((20, 20))
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draw.line((5, 5, 14, 5), BLACK, 3)
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self.assert_image_equal(
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img, expected, 'line straight horizontal normal 3px wide failed')
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img, draw = self.create_base_image_draw((20, 20))
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draw.line((14, 5, 5, 5), BLACK, 3)
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self.assert_image_equal(
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img, expected, 'line straight horizontal inverted 3px wide failed')
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expected = Image.open(os.path.join(IMAGES_PATH,
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'line_horizontal_w101px.png'))
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expected.load()
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img, draw = self.create_base_image_draw((200, 110))
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draw.line((5, 55, 195, 55), BLACK, 101)
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self.assert_image_equal(
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img, expected, 'line straight horizontal 101px wide failed')
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def test_line_h_s1_w2(self):
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self.skipTest('failing')
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expected = Image.open(os.path.join(IMAGES_PATH,
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'line_horizontal_slope1px_w2px.png'))
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expected.load()
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img, draw = self.create_base_image_draw((20, 20))
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draw.line((5, 5, 14, 6), BLACK, 2)
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self.assert_image_equal(
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img, expected, 'line horizontal 1px slope 2px wide failed')
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def test_line_vertical(self):
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expected = Image.open(os.path.join(IMAGES_PATH,
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'line_vertical_w2px_normal.png'))
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expected.load()
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img, draw = self.create_base_image_draw((20, 20))
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draw.line((5, 5, 5, 14), BLACK, 2)
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self.assert_image_equal(
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img, expected, 'line straight vertical normal 2px wide failed')
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expected = Image.open(os.path.join(IMAGES_PATH,
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'line_vertical_w2px_inverted.png'))
|
|
expected.load()
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((5, 14, 5, 5), BLACK, 2)
|
|
self.assert_image_equal(
|
|
img, expected, 'line straight vertical inverted 2px wide failed')
|
|
expected = Image.open(os.path.join(IMAGES_PATH,
|
|
'line_vertical_w3px.png'))
|
|
expected.load()
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((5, 5, 5, 14), BLACK, 3)
|
|
self.assert_image_equal(
|
|
img, expected, 'line straight vertical normal 3px wide failed')
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((5, 14, 5, 5), BLACK, 3)
|
|
self.assert_image_equal(
|
|
img, expected, 'line straight vertical inverted 3px wide failed')
|
|
expected = Image.open(os.path.join(IMAGES_PATH,
|
|
'line_vertical_w101px.png'))
|
|
expected.load()
|
|
img, draw = self.create_base_image_draw((110, 200))
|
|
draw.line((55, 5, 55, 195), BLACK, 101)
|
|
self.assert_image_equal(img, expected,
|
|
'line straight vertical 101px wide failed')
|
|
expected = Image.open(os.path.join(IMAGES_PATH,
|
|
'line_vertical_slope1px_w2px.png'))
|
|
expected.load()
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((5, 5, 6, 14), BLACK, 2)
|
|
self.assert_image_equal(img, expected,
|
|
'line vertical 1px slope 2px wide failed')
|
|
|
|
def test_line_oblique_45(self):
|
|
expected = Image.open(os.path.join(IMAGES_PATH,
|
|
'line_oblique_45_w3px_a.png'))
|
|
expected.load()
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((5, 5, 14, 14), BLACK, 3)
|
|
self.assert_image_equal(img, expected,
|
|
'line oblique 45 normal 3px wide A failed')
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((14, 14, 5, 5), BLACK, 3)
|
|
self.assert_image_equal(img, expected,
|
|
'line oblique 45 inverted 3px wide A failed')
|
|
expected = Image.open(os.path.join(IMAGES_PATH,
|
|
'line_oblique_45_w3px_b.png'))
|
|
expected.load()
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((14, 5, 5, 14), BLACK, 3)
|
|
self.assert_image_equal(img, expected,
|
|
'line oblique 45 normal 3px wide B failed')
|
|
img, draw = self.create_base_image_draw((20, 20))
|
|
draw.line((5, 14, 14, 5), BLACK, 3)
|
|
self.assert_image_equal(img, expected,
|
|
'line oblique 45 inverted 3px wide B failed')
|
|
|
|
def test_wide_line_dot(self):
|
|
# Test drawing a wide "line" from one point to another just draws
|
|
# a single point
|
|
# Arrange
|
|
im = Image.new("RGB", (W, H))
|
|
draw = ImageDraw.Draw(im)
|
|
expected = "Tests/images/imagedraw_wide_line_dot.png"
|
|
|
|
# Act
|
|
draw.line([(50, 50), (50, 50)], width=3)
|
|
|
|
# Assert
|
|
self.assert_image_similar(im, Image.open(expected), 1)
|
|
|
|
def test_textsize_empty_string(self):
|
|
# https://github.com/python-pillow/Pillow/issues/2783
|
|
# Arrange
|
|
im = Image.new("RGB", (W, H))
|
|
draw = ImageDraw.Draw(im)
|
|
|
|
# Act
|
|
# Should not cause 'SystemError: <built-in method getsize of
|
|
# ImagingFont object at 0x...> returned NULL without setting an error'
|
|
draw.textsize("")
|
|
draw.textsize("\n")
|
|
draw.textsize("test\n")
|
|
|
|
def test_same_color_outline(self):
|
|
# Prepare shape
|
|
x0, y0 = 5, 5
|
|
x1, y1 = 5, 50
|
|
x2, y2 = 95, 50
|
|
x3, y3 = 95, 5
|
|
|
|
s = ImageDraw.Outline()
|
|
s.move(x0, y0)
|
|
s.curve(x1, y1, x2, y2, x3, y3)
|
|
s.line(x0, y0)
|
|
|
|
# Begin
|
|
for mode in ["RGB", "L"]:
|
|
for fill, outline in [
|
|
["red", None],
|
|
["red", "red"],
|
|
["red", "#f00"]
|
|
]:
|
|
for operation, args in {
|
|
'chord':[BBOX1, 0, 180],
|
|
'ellipse':[BBOX1],
|
|
'shape':[s],
|
|
'pieslice':[BBOX1, -90, 45],
|
|
'polygon':[[(18, 30), (85, 30), (60, 72)]],
|
|
'rectangle':[BBOX1]
|
|
}.items():
|
|
# Arrange
|
|
im = Image.new(mode, (W, H))
|
|
draw = ImageDraw.Draw(im)
|
|
|
|
# Act
|
|
draw_method = getattr(draw, operation)
|
|
args += [fill, outline]
|
|
draw_method(*args)
|
|
|
|
# Assert
|
|
expected = ("Tests/images/imagedraw_outline"
|
|
"_{}_{}.png".format(operation, mode))
|
|
self.assert_image_similar(im, Image.open(expected), 1)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|