from pygeo import * v=display(scale=70) p1 = FreePoint(-8.,17,-3,color=WHITE) p2 = FreePoint(-23,33,4,color=WHITE) sphere=Sphere(p1,p2,color=BLUE) p3 = FreePoint(1,9,-1,color=WHITE) p4 = FreePoint(30,2,-1,color=WHITE) line=Line(p3,p4,color=BLUE) SphereChord(sphere,line,color=RED,linewidth=.5) v.pickloop()