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115 lines
3.2 KiB
115 lines
3.2 KiB
7 years ago
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#!/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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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(), 1, 1)
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class Disc:
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def __init__(self, worldsize, hue):
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self.worldsize = worldsize
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self.pos = Point(random.randint(0, worldsize.x - 1),
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random.randint(0, worldsize.y - 1))
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self.hue = hue
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self.r = 1
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self.speed = min(worldsize.x, worldsize.y) / 2
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self.done = False
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def update(self, t, dt):
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self.r += self.speed * dt
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if self.r > max(self.worldsize.x, self.worldsize.y):
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self.done = True
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def draw(self, frame):
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color = colorsys.hsv_to_rgb(self.hue, 1, 1)
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for x in range(self.worldsize.x):
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for y in range(self.worldsize.y):
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p = Point(x, y)
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if (p - self.pos).len < self.r:
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frame.setPixel(p.x, p.y, convert_color(color))
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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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discs = []
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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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frame = blup.animation.AnimationFrame(dim, args.delay)
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if len(discs) == 0 or discs[-1].r > min(WIDTH, HEIGHT) / 2:
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hue = random.random()
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if len(discs) > 0:
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l = lambda d: hue - d.hue if d.hue < hue else d.hue - hue
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while not 0.2 < sorted(map(l, discs))[0] < 0.8:
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hue = random.random()
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discs.append(Disc(Point(WIDTH, HEIGHT), hue))
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for d in discs:
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d.update(t, dt)
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d.draw(frame)
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if len(discs) > 2 and discs[0].done and discs[1].done:
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del discs[0]
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anim.addFrame(frame)
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blup.writebml.writeBml(anim, args.output_file)
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