Test scripts

gamut.py

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+import colorsys
+
+from PIL import Image, ImageDraw, ImageCms
+
+import math
+
+from crop_card import BASE_DIR
+
+
+def clamp(v, min_v, max_v):
+    return max(min_v, min(max_v, v))
+
+
+# im = Image.new('RGB', (4096, 4096))
+# d = ImageDraw.Draw(im)
+# for y in range(4096):
+#     for x in range(4096):
+#         r = x // 16
+#         g = y // 16
+#         b = 0
+#         d.point((x, y), fill = (r, g, b))
+
+im = Image.new('RGB', (1024, 1024))
+d = ImageDraw.Draw(im)
+center = 1024 / 2
+radius = 1024 / 2
+for y in range(1024):
+    for x in range(1024):
+        h = (math.atan2(y - center, x - center) + math.pi) / (math.pi * 2)
+        h = clamp(h, 0, 1)
+        distance_from_center = (abs(x - center) ** 2 + abs(y - center) ** 2) ** 0.5
+        s = distance_from_center / radius
+        if s > 1:
+            v = 0
+        else:
+            v = 1
+        s = clamp(s, 0, 1)
+        r, g, b = colorsys.hsv_to_rgb(h, s, v)
+        rgb = (
+            clamp(round(r * 255), 0, 255),
+            clamp(round(g * 255), 0, 255),
+            clamp(round(b * 255), 0, 255),
+        )
+        d.point((x, y), fill = rgb)
+
+im = im.convert('RGB')
+icc_profile = ImageCms.getOpenProfile(str(BASE_DIR / 'icc' / 'AdobeRGB1998.icc'))
+im.save(BASE_DIR / 'archive' / 'gamut_srgb.jpg', 'JPEG', quality=100, subsampling=0)
+im.save(BASE_DIR / 'archive' / 'gamut_icc.jpg', 'JPEG', quality=100, subsampling=0, icc_profile=icc_profile.tobytes())
+