from pygeo import * v=display(scale=70) p1 = FreePoint(-33.,-3,-3,color=WHITE) prs2 = FreePoint(-23,33,4,color=WHITE) sphere=Sphere(p1,p2,color=BLUE,style=LINES) p4 = FreePoint(10,9,-1,color=BLUE,pointsize=1.5) SphereInversion(p4,sphere,color=RED,pointsize=1.5) v.pickloop()