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#
# Code under the MIT license by Alexander Pruss
#
#
# Draw a knot
#
from mc import *
def ball(x0,y0,z0,r,block_type,done):
for x in range(-r,r):
for y in range(-r,r):
for z in range(-r,r):
if (x**2 + y**2 + z**2 <= r**2):
if not (x0+x,y0+y,z0+z) in done:
mc.setBlock(x0+x,y0+y,z0+z,block_type)
done.add((x0+x,y0+y,z0+z))
mc = Minecraft()
playerPos = mc.player.getPos()
scale = 10
x0 = int(playerPos.x)
y0 = int(playerPos.y + 5*scale)
z0 = int(playerPos.z)
done = set()
t = 0
while t < 2*pi:
# cinquefoil from http://www.maa.org/sites/default/files/images/upload_library/23/stemkoski/knots/page6.html
x = playerPos.x+int( scale * cos(2*t) * (3 + cos(5*t)) )
y = playerPos.y+int( scale * sin(2*t) * (3 + cos(5*t)) )
z = playerPos.z+int( scale * sin(5*t) )
ball(x,y,z,4,GLOWSTONE_BLOCK,done)
t += 2*pi / 10000
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