forked from fogleman/xy
/
pipes.py
139 lines (131 loc) · 4.43 KB
/
pipes.py
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from math import radians
import random
import xy
import xyz
PIPES = 8
SIZE = 3
TURN_PROBABILITY = 0.3
UPDATE_RATE = 0.05
DIRECTIONS = [
(0, -1, 0, 0), (0, 1, 0, 0),
(1, 0, -1, 0), (1, 0, 1, 0),
(2, 0, 0, -1), (2, 0, 0, 1),
]
def sphere(x, y, z, r, axis=2):
return xyz.Sphere(r, (x, y, z))
if axis == 0:
s = xyz.Sphere(r)
m = xyz.rotate((0, 1, 0), radians(90)).translate((x, y, z))
return xyz.TransformedShape(s, m)
if axis == 1:
s = xyz.Sphere(r)
m = xyz.rotate((1, 0, 0), radians(90)).translate((x, y, z))
return xyz.TransformedShape(s, m)
if axis == 2:
return xyz.Sphere(r, (x, y, z))
def pipe(a, b, r):
x1, y1, z1 = a
x2, y2, z2 = b
dx, dy, dz = x2 - x1, y2 - y1, z2 - z1
if dx:
c = xyz.Cylinder(r, -dx / 2.0, dx / 2.0)
m = xyz.rotate((0, 1, 0), radians(-90)).translate(((x1 + x2) / 2.0, y1, z1))
return xyz.TransformedShape(c, m)
if dy:
c = xyz.Cylinder(r, -dy / 2, dy / 2)
m = xyz.rotate((1, 0, 0), radians(-90)).translate((x1, (y1 + y2) / 2.0, z1))
return xyz.TransformedShape(c, m)
if dz:
c = xyz.Cylinder(r, z1, z2)
m = xyz.translate((x1, y1, 0))
return xyz.TransformedShape(c, m)
class Pipe(object):
def __init__(self, occupied):
self.occupied = occupied
self.shapes = []
self.restart()
def add_cylinder(self, position, axis):
x, y, z = position
if axis == 0:
self.shapes.append(pipe((x - 0.5, y, z), (x + 0.5, y, z), 0.25))
if axis == 1:
self.shapes.append(pipe((x, y - 0.5, z), (x, y + 0.5, z), 0.25))
if axis == 2:
self.shapes.append(pipe((x, y, z - 0.5), (x, y, z + 0.5), 0.25))
def add_sphere(self, position):
x, y, z = position
self.shapes.append(sphere(x, y, z, 0.25))
def restart(self):
while True:
x = random.randint(-SIZE, SIZE)
y = random.randint(-SIZE, SIZE)
z = random.randint(-SIZE, SIZE)
if (x, y, z) not in self.occupied:
break
self.position = (x, y, z)
self.direction = random.choice(DIRECTIONS)
self.occupied.add(self.position)
self.add_sphere(self.position)
def update(self):
x, y, z = self.position
directions = list(DIRECTIONS)
random.shuffle(directions)
if random.random() > TURN_PROBABILITY:
directions.remove(self.direction)
directions.insert(0, self.direction)
for direction in directions:
axis, dx, dy, dz = direction
nx, ny, nz = x + dx, y + dy, z + dz
if (nx, ny, nz) in self.occupied:
continue
if any(n < -SIZE or n > SIZE for n in (nx, ny, nz)):
continue
self.position = (nx, ny, nz)
self.occupied.add(self.position)
mx, my, mz = x + dx / 2.0, y + dy / 2.0, z + dz / 2.0
self.add_cylinder((mx, my, mz), axis)
if direction != self.direction:
self.add_sphere((x, y, z))
self.direction = direction
return True
# self.add_sphere(self.position)
# if len(self.occupied) < (SIZE * 2 + 1) ** 3:
# self.restart()
# return True
return False
def create_drawing():
random.seed(1004)
occupied = set()
pipes = [Pipe(occupied) for _ in range(PIPES)]
for _ in range(60000):
done = True
for pipe in pipes:
if pipe.update():
done = False
if done:
break
print len(occupied)
shapes = []
for pipe in pipes:
pipe.add_sphere(pipe.position)
shapes.extend(pipe.shapes)
print len(shapes)
scene = xyz.Scene(shapes)
paths = scene.render((25, 25, 10), (0, 0, 0), (0, 0, 1), 60, 1, 0.1, 100, 0.05)
# paths.append([(-1, -1), (1, -1), (1, 1), (-1, 1), (-1, -1)])
drawing = xy.Drawing(paths).rotate(90).scale_to_fit(315, 380).rotate(-90)
return drawing
def main():
try:
drawing = xy.Drawing.load('pipes.dwg')
except Exception:
drawing = create_drawing()
n = 50
o = 25
drawing = drawing.origin().crop(n, n + o, 315 - n, 315 - n + o).scale_to_fit(315, 315)
drawing = drawing.sort_paths_greedy().join_paths()
drawing.render().write_to_png('pipes.png')
# drawing.save('pipes.dwg')
xy.draw(drawing)
if __name__ == '__main__':
main()