#
# interact
#
import math
g.antialias(1)
g.norefresh()

def border():
g.paper(60)
g.field(5,10,25,80,30)
g.field(10,8,60,60,10)

def non(x,y,r,angle,color):
g.pen(color)
for i in range(0,121):
x0 = int(r*i/100.0*math.cos(angle+2*math.pi*(i/100.0)))
y0 = int(r*i/100.0*math.sin(angle+2*math.pi*(i/100.0)))
x1 = int(r*i/100.0*math.cos(math.pi+angle+2*math.pi*(i/100.0)))
y1 = int(r*i/100.0*math.sin(math.pi+angle+2*math.pi*(i/100.0)))
g.setPixel(x+x0,y+y0,color)
g.setPixel(x+x1,y+y1,color)
x0 = int(r*math.cos(angle))
y0 = int(r*math.sin(angle))
for i in range(1,10):
x1 = int(r*math.cos(angle+2*math.pi*(i/5.0)))
y1 = int(r*math.sin(angle+2*math.pi*(i/7.0)))
g.line(x,y,x+x0,y+y0)
g.line(x+x0,y+y0,x+x1,y+y1)
x0 = x1
y0 = y1

g.refresh()


while 1:
border()
angle = 2*math.pi*g.getMouse(1)/100.0
non(50,50,25,angle,100)