annotate ch7ex2.py @ 48:98eb01502cf5
tip
Follow up to last commit. Re-orient the r-pentomino. Added progress display.
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Brian Neal <bgneal@gmail.com> |
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Wed, 31 Jul 2013 20:37:12 -0500 (2013-08-01) |
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2b0e229e163c |
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line source |
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1 """Chapter 7, exercise 2 in Allen Downey's Think Complexity book.
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2
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3 Start with an r-pentomino as an initial condition and confirm that the results
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4 are consistent with the description above. You might have to adjust the size of
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5 the grid and the boundary behavior.
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6
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7 """
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8 import Life
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9
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10
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11 class RPentomino(Life.Life):
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12
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13 def __init__(self, n):
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14 super(RPentomino, self).__init__(n, mode='constant', cval=0,
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15 random=False, show_progress=10)
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16
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17 i, j = n / 2, n / 2
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18 self.array[i, j] = 1
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19 self.array[i, j - 1] = 1
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20 self.array[i + 1, j] = 1
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21 self.array[i + 1, j + 1] = 1
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22 self.array[i - 1, j] = 1
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23
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24
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25 if __name__ == '__main__':
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26 life = RPentomino(150)
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27 viewer = Life.LifeViewer(life, delay=1)
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28 viewer.animate(steps=1200)
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