68 lines
1.7 KiB
Python
68 lines
1.7 KiB
Python
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import math
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# # Linear
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def diagonal():
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def f (x, y, width, height, mark, blank):
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if x == math.floor((y / float(height)) * width):
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return mark()
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else:
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return blank()
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return f
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# Cross
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def cross ():
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def f (x, y, width, height, mark, blank):
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pos = math.floor((y / float(height)) * width)
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if x == pos or (width - 1) - pos == x:
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return mark()
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else:
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return blank()
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return f
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def horizontal (position):
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def f (x, y, width, height, mark, blank):
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return mark() if position == y else blank()
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return f
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def vertical (position):
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def f (x, y, width, height, mark, blank):
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return mark() if position == x else blank()
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return f
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# Sinus
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def sinus_vertical (period=0.2, amplitude=0.5, offset_t=0, offset=0):
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period = (period / (math.pi * 2))
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def f (x, y, width, height, mark, blank):
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middle = (width - 1) * .5
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to_mark = math.floor(middle + math.sin(offset_t + y / period) * amplitude)
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return mark() if (x + offset) == to_mark else blank()
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return f
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def sinus_horizontal (period=0.2, amplitude=0.5, offset_t=0, offset=0):
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period = (period / (math.pi * 2))
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def f (x, y, width, height, mark, blank):
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middle = (height - 1) * .5
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to_mark = math.floor(middle + math.sin(offset_t + x / period) * amplitude)
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return mark() if y + offset == to_mark else blank()
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return f
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def image (path, threshold=128):
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from PIL import Image
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im = Image.open(path).convert('L')
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image_width, image_height = im.size
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pixels = im.load()
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def f (x, y, width, height, mark, blank):
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if x < image_width and y < image_height:
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if pixels[x, y] < threshold:
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return mark()
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return blank()
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return f
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