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37 lines
839 B
37 lines
839 B
4 years ago
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# SPDX-FileCopyrightText: 2018 Coinkite, Inc. <coldcardwallet.com>
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# SPDX-License-Identifier: GPL-3.0-only
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#
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#!/usr/bin/env python3
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from math import sin, pi
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from collections import Counter
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W = 128 # screen width
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PW = 12 # width of eye
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parts = 53 # of animation steps
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dr = (2*pi) / parts
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RW = W - PW - 1
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ampl = (RW/2) + .5
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offset = (W/2) - (PW/2)
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rv = []
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r = 0
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for n in range(parts):
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x = (ampl * sin(r)) + offset
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x = int(x+.5)
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print(f'{n:2d}: {x:3d} ' + (' '*x) + 'X')
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r += dr
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rv.append(x)
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assert rv[0]+(PW//2) == W//2, rv[0]
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assert max(rv) == W-PW, max(rv)
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assert min(rv) == 0, min(rv)
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# only want it to hesitate at the ends
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cnt = Counter(rv).most_common()
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assert max(c for x,c in cnt) == 2, repr(cnt)
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print("\nResult: " + ', '.join(str(i) for i in rv))
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print("\ncylon = %r" % bytes(rv))
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