kopia lustrzana https://gitlab.com/gerbolyze/gerbonara
37 wiersze
1.3 KiB
Python
37 wiersze
1.3 KiB
Python
#!/usr/bin/env python3
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import math
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from gerbonara.graphic_objects import Arc
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from gerbonara.graphic_objects import rotate_point
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def approx_test():
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print('<?xml version="1.0" encoding="utf-8"?>')
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print('<svg width="300mm" height="300mm" viewBox="0 0 300 300" xmlns="http://www.w3.org/2000/svg">')
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n = 16
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eps = 1/n*2*math.pi
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cx, cy = 0, 0
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for clockwise in False, True:
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for start_angle in range(n):
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cx, cy = 0, cy+2.5
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for sweep_angle in range(n):
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for color, max_error in zip(['black', 'red', 'blue', 'magenta'], [0.1, 0.3, 1, 3]):
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cx = cx+2.5
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x1, y1 = rotate_point(0, -1, start_angle*eps)
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x2, y2 = rotate_point(x1, y1, sweep_angle*eps*(-1 if clockwise else 1))
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arc = Arc(x1+cx, y1+cy, x2+cx, y2+cy, -x1, -y1, clockwise=clockwise, aperture=None, polarity_dark=True)
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lines = arc.approximate(max_error=max_error)
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print(f'<path style="fill: {color}; stroke: none;" d="M {cx} {cy} L {lines[0].x1} {lines[0].y1}', end=' ')
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for line in lines:
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print(f'L {line.x2} {line.y2}', end=' ')
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print('"/>')
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print('</svg>')
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if __name__ == '__main__':
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approx_test()
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