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141 lines
4.2 KiB
141 lines
4.2 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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@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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class PointLenOrder: |
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def __init__(self, value): |
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self.value = value |
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def __eq__(self, other): |
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return other.value.len == self.value.len |
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def __lt__(self, other): |
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return other.value.len < self.value.len |
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DIRECTIONS = [ Point(x, y) for x in [-1, 1] for y in [-1, 1] ] |
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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 Line: |
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def __init__(self, worldsize): |
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self.worldsize = worldsize |
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self.line = [Point(random.randint(0, worldsize.x), |
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random.randint(0, worldsize.y))] |
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self.slen = 1 |
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self.dir = random.choice(DIRECTIONS) |
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self.color = get_random_color() |
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diaglen = int(math.sqrt(worldsize.x**2 + worldsize.y**2)) |
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self.maxlen = random.randint(diaglen, diaglen * 3) |
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self.fadeout_time = 2 + random.random() * 2 |
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self.fadeout_remaining = None |
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self.finished = False |
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def check_bounds(self, p): |
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return p.x < self.worldsize.x and p.x >= 0 \ |
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and p.y < self.worldsize.y and p.y >= 0 |
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def update(self, t, dt): |
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if len(self.line) < self.maxlen: |
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if self.slen >= 3 and random.random() < 0.4: |
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dirs = list(DIRECTIONS) |
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dirs.remove(self.line[-1] - self.line[-2]) |
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if self.check_bounds(self.line[-1]): |
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newp = None |
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while newp is None or newp == self.line[-2]: |
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self.dir = random.choice(dirs) |
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newp = self.line[-1] + self.dir |
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else: |
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dirs.sort(key=lambda d: ((self.line[-1]+d) - Point(0, 0)).len) |
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self.dir = dirs[0] |
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self.slen = 1 |
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else: |
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self.slen += 1 |
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self.line.append(self.line[-1] + self.dir) |
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else: |
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if self.fadeout_remaining is None: |
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self.fadeout_remaining = self.fadeout_time |
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elif self.fadeout_remaining <= 0: |
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self.finished = True |
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else: |
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self.fadeout_remaining -= dt |
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def draw(self, frame): |
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if self.fadeout_remaining is not None: |
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if self.fadeout_remaining > 0: |
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h, s, v = colorsys.rgb_to_hsv(*self.color) |
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v = v * (self.fadeout_remaining / self.fadeout_time) |
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color = colorsys.hsv_to_rgb(h, s, v) |
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else: |
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color = (0, 0, 0) |
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else: |
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color = self.color |
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for p in self.line: |
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if self.check_bounds(p): |
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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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lines = [Line(Point(WIDTH, HEIGHT))] |
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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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for l in lines: |
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l.update(t, dt) |
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l.draw(frame) |
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if lines[-1].fadeout_remaining is not None: |
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lines.append(Line(Point(WIDTH, HEIGHT))) |
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for l in lines: |
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if l.finished: |
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lines.remove(l) |
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anim.addFrame(frame) |
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blup.writebml.writeBml(anim, args.output_file)
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