PcCurve.py

from pygeo import *

v=display(scale=70)
point1 = FreePoint(-18,-12.,15,pointsize=1.5)
point2 = FreePoint(3,-8.0,0,pointsize=1.5)
point3 = FreePoint(-35.0,-2.0,25,pointsize=1.5)

plane=Plane(point1,point2,point3,color=WHITE)
point4 = Slider(plane,-9,18,-1,pointsize=1.5)

PcCurve(point1,point2,point3,point4,color=RED,linewidth=.5)
PcCurve(point2,point3,point4,point1,color=RED,linewidth=.5)
PcCurve(point3,point4,point1,point2,color=RED,linewidth=.5)
PcCurve(point4,point1,point2,point3,color=RED,linewidth=.5)
v.pickloop()