110 lines
2.9 KiB
Python
110 lines
2.9 KiB
Python
import svgwrite
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import random
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import time
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from math import factorial,sin,cos,pi
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from itertools import permutations
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import tsp as m_tsp
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def dist(p1,p2):
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return dist2(p1,p2)**0.5
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def dist2(p1,p2):
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diff=0
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for a,b in zip(p1,p2):
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diff+=(a-b)**2
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return diff
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def tsp(points):
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res=[]
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for idx in m_tsp.tsp(points)[1]:
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res.append(points[idx])
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return res
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def make_points(n,size,min_dist=0):
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min_dist*=min_dist
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points=[]
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while len(points)<n:
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px,py=random.random(),random.random()
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px*=size/2
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py*=size/2
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px+=70
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py+=70
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valid=True
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for p in points:
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if dist2(p,(px,py))<min_dist:
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valid=False
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break
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if valid:
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points.append((px,py))
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print("{}/{}".format(len(points),n))
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return points
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def generate(seed,name=None,small=False):
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sd=1
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if small:
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sd=2
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random.seed(seed)
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w=2
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max_rings=3
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num_points=5
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min_dist=10+10+20*(max_rings+1)
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base_r=10
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ring_step=lambda v:10+v*10
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size=1000
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if name is None:
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name=seed
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dwg=svgwrite.Drawing(filename="out/{}.svg".format(name))
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dwg.defs.add(dwg.style(".background { fill: #222; }"))
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dwg.add(dwg.rect(size=('100%','100%'), class_='background'))
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print("Generating points...")
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color="#eee"
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pos=make_points(num_points,size,min_dist=min_dist)
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print("TSP...")
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pos=tsp(pos)
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for (x1,y1),(x2,y2) in zip(pos,pos[1:]):
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if small:
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x1/=sd
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x2/=sd
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y1/=sd
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y2/=sd
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line=dwg.add(dwg.line((x1,y1),(x2,y2),stroke_width=w,stroke=color))
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for (px,py) in pos:
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base_r=3
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if small:
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base_r=5
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px/=sd
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py/=sd
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if random.random()>0.8:
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dwg.add(dwg.circle((px,py),r=base_r+random.random()*base_r,stroke_width=w,stroke='#0ae')).fill('#0ae')
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else:
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dwg.add(dwg.circle((px,py),r=base_r+random.random()*base_r,stroke_width=w,stroke=color)).fill(color)
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r=base_r
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for _ in range(random.randint(1,max_rings)):
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if small:
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random.random()
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random.random()
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random.random()
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continue
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r+=ring_step(random.random())
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ring_col=color
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if random.random()>0.75:
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ring_col="#ea0"
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circ=dwg.add(dwg.circle((px,py),r=r,stroke_width=w,stroke=ring_col))
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circ.fill(color,opacity=0)
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d=random.random()*pi*2
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dx=cos(d)
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dy=sin(d)
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m=random.random()
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moon=dwg.add(dwg.circle((px+dx*r,py+dy*r),r=2+2*m,stroke_width=w,stroke=ring_col))
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moon.fill(ring_col)
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dwg.save()
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seed=-4
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generate(seed,"icon_1",small=False)
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generate(seed,"icon_1_small",small=True)
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