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107 lines
2.9 KiB
107 lines
2.9 KiB
#!/usr/bin/env python3 |
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import sys |
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import random |
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import math |
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import argparse |
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import collections |
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import blup.frame |
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import blup.output |
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import blup.animation |
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import blup.writebml |
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import colorsys |
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import functools |
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WIDTH = 22 |
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HEIGHT = 16 |
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DEPTH = 256 |
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class Point(collections.namedtuple('Point', ['x', 'y'])): |
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def __add__(self, other): |
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return Point(self.x + other.x, self.y + other.y) |
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def __sub__(self, other): |
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return Point(self.x - other.x, self.y - other.y) |
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def __mul__(self, other): |
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if isinstance(other, Point): |
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raise Exception('not implemented') |
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else: |
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return Point(self.x * other, self.y * other) |
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def __truediv__(self, other): |
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if isinstance(other, Point): |
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raise ValueError() |
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else: |
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return self * (1/other) |
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@property |
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def len(self): |
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return math.sqrt(self.x**2 + self.y**2) |
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@property |
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def n(self): |
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n = Point(self.y, -self.x) |
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return n / n.len |
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@property |
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def intp(self): |
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return Point(int(round(self.x)), int(round(self.y))) |
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def convert_color(c): |
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return list(map(lambda x: int(round(x*(DEPTH-1))), c)) |
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def get_random_color(): |
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return colorsys.hsv_to_rgb(random.random(), 0.5 + random.random() / 2, 1) |
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class CurveFunction(): |
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def __init__(self, p1, p2): |
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self.p1, self.p2 = p1, p2 |
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d = p2 - p1 |
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self.pp = p1 + d/2 + d.n * (d.len * 0.8) |
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def __call__(self, t): |
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ret = (self.p1 - self.pp*2 + self.p2) * t**2 |
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ret += (self.p1 * -2 + self.pp * 2) * t |
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ret += self.p1 |
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return ret |
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if __name__ == '__main__': |
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parser = argparse.ArgumentParser(description='Generate animations') |
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parser.add_argument('-d', '--delay', type=int, default=50) |
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parser.add_argument('-t', '--time', type=int, default=15) |
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parser.add_argument('output_file') |
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args = parser.parse_args() |
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dim = blup.frame.FrameDimension(WIDTH, HEIGHT, DEPTH, 3) |
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anim = blup.animation.Animation(dim) |
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anim.tags['description'] = ' '.join(sys.argv) |
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t = 0 |
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dt = args.delay / 1000 |
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while t < args.time: |
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t += dt |
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p1 = p2 = None |
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while p1 == p2 or (p1 - p2).len < max(WIDTH, HEIGHT) / 2: |
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p1 = Point(random.randint(0, WIDTH-1), random.randint(0, HEIGHT-1)) |
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p2 = Point(random.randint(0, WIDTH-1), random.randint(0, HEIGHT-1)) |
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cf = CurveFunction(p1, p2) |
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color = convert_color(get_random_color()) |
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tt = 0 |
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points = [] |
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while tt <= 1: |
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t += dt |
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tt += 0.025 |
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p = cf(tt).intp |
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points.append(p) |
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frame = blup.animation.AnimationFrame(dim, args.delay) |
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for p in points: |
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try: |
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frame.setPixel(p.x, p.y, color) |
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except ValueError: |
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pass |
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anim.addFrame(frame) |
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blup.writebml.writeBml(anim, args.output_file)
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