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  1. # Author: http://stackoverflow.com/users/1679849
  2. #
  3. # Create an SVG gear object based on three input parameters (provided
  4. # via stdin):
  5. #
  6. #  - number of teeth
  7. #  - mean radius (average radius between top & bottom of teeth)
  8. #  - tooth size (height of teeth from top to bottom)
  9. #
  10. # Note: to create gears that mesh correctly, always use the same
  11. # tooth size, and ensure that the ratio of the number of teeth to
  12. # the mean radius is constant. For example:
  13. #
  14. # 1: nteeth = 24, rmean = 45, tsize = 5
  15. # 2: nteeth = 16, rmean = 30, tsize = 5
  16. #
  17. # Outputs an SVG <path> element with up to 2 decimal places per point,
  18. # but you can edit this setting if you like:
  19. decimalplaces = 2
  20.  
  21. from math import (sin,cos,pi)
  22.  
  23. def formatnum(floatnum):
  24.     s = ('%.'+str(decimalplaces)+'f') % floatnum
  25.     s = s.rstrip('0').rstrip('.')
  26.     if s == '-0':
  27.         s = '0'
  28.     return s
  29.  
  30. def gear(nteeth,rmean,tsize):
  31.     dr = tsize * 0.1
  32.     rmin = rmean - tsize * 0.5
  33.     rmax = rmean + tsize * 0.5
  34.     rads = [rmin,rmin+dr,rmax-dr,rmax,rmax,rmax-dr,rmin+dr,rmin]
  35.     nt8 = nteeth * 8
  36.     o = ''
  37.     for theta in range(nt8):
  38.         r = rads[theta % 8]
  39.         x = sin(theta * 2 * pi / nt8) * r
  40.         y = cos(theta * 2 * pi / nt8) * r
  41.         o = o + formatnum(x) + ' ' + formatnum(y) + ' '
  42.     return o.strip().replace(' -','-')
  43.  
  44. nt = input()
  45. rm = input()
  46. ts = input()
  47. print '<path d="M' + gear(nt,rm,ts) + 'z" />'
  48.  
Success #stdin #stdout 0.01s 7740KB
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<path d="M0 27.5 0.92 27.99 2.09 31.93 3.19 32.34 4.24 32.22 5.21 31.57 5.46 27.46 6.24 26.78 7.12 26.56 8.13 26.79 10.29 30.3 11.45 30.42 12.44 30.03 13.21 29.15 12.38 25.11 12.96 24.25 13.75 23.82 14.79 23.78 17.78 26.61 18.93 26.42 19.78 25.78 20.3 24.74 18.46 21.05 18.8 20.07 19.45 19.45 20.44 19.14 24.06 21.1 25.12 20.62 25.78 19.78 26.01 18.64 23.28 15.56 23.35 14.52 23.82 13.75 24.69 13.2 28.7 14.15 29.6 13.41 30.03 12.44 29.95 11.27 26.51 9 26.32 7.98 26.56 7.12 27.27 6.36 31.39 6.24 32.07 5.29 32.22 4.24 31.85 3.14 27.94 1.83 27.49 0.9 27.5 0 27.99-0.92 31.93-2.09 32.34-3.19 32.22-4.24 31.57-5.21 27.46-5.46 26.78-6.24 26.56-7.12 26.79-8.13 30.3-10.29 30.42-11.45 30.03-12.44 29.15-13.21 25.11-12.38 24.25-12.96 23.82-13.75 23.78-14.79 26.61-17.78 26.42-18.93 25.78-19.78 24.74-20.3 21.05-18.46 20.07-18.8 19.45-19.45 19.14-20.44 21.1-24.06 20.62-25.12 19.78-25.78 18.64-26.01 15.56-23.28 14.52-23.35 13.75-23.82 13.2-24.69 14.15-28.7 13.41-29.6 12.44-30.03 11.27-29.95 9-26.51 7.98-26.32 7.12-26.56 6.36-27.27 6.24-31.39 5.29-32.07 4.24-32.22 3.14-31.85 1.83-27.94 0.9-27.49 0-27.5-0.92-27.99-2.09-31.93-3.19-32.34-4.24-32.22-5.21-31.57-5.46-27.46-6.24-26.78-7.12-26.56-8.13-26.79-10.29-30.3-11.45-30.42-12.44-30.03-13.21-29.15-12.38-25.11-12.96-24.25-13.75-23.82-14.79-23.78-17.78-26.61-18.93-26.42-19.78-25.78-20.3-24.74-18.46-21.05-18.8-20.07-19.45-19.45-20.44-19.14-24.06-21.1-25.12-20.62-25.78-19.78-26.01-18.64-23.28-15.56-23.35-14.52-23.82-13.75-24.69-13.2-28.7-14.15-29.6-13.41-30.03-12.44-29.95-11.27-26.51-9-26.32-7.98-26.56-7.12-27.27-6.36-31.39-6.24-32.07-5.29-32.22-4.24-31.85-3.14-27.94-1.83-27.49-0.9-27.5 0-27.99 0.92-31.93 2.09-32.34 3.19-32.22 4.24-31.57 5.21-27.46 5.46-26.78 6.24-26.56 7.12-26.79 8.13-30.3 10.29-30.42 11.45-30.03 12.44-29.15 13.21-25.11 12.38-24.25 12.96-23.82 13.75-23.78 14.79-26.61 17.78-26.42 18.93-25.78 19.78-24.74 20.3-21.05 18.46-20.07 18.8-19.45 19.45-19.14 20.44-21.1 24.06-20.62 25.12-19.78 25.78-18.64 26.01-15.56 23.28-14.52 23.35-13.75 23.82-13.2 24.69-14.15 28.7-13.41 29.6-12.44 30.03-11.27 29.95-9 26.51-7.98 26.32-7.12 26.56-6.36 27.27-6.24 31.39-5.29 32.07-4.24 32.22-3.14 31.85-1.83 27.94-0.9 27.49z" />
https://ideone.com/dQIEyV
language:
Python (cpython 2.7.16)
created:
10 years ago
visibility:
secret

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