z_to_uPoint.py

from pygeo import *

v=display(scale=3, camera_vector=(0,1,-1))

zpoint=zFreePoint(-1,-2,color=BLUE)

upoint=z_to_uPoint(zpoint)

#refences objects
usphere=uSphere()
zPlane(grid_scale=20)
rLine(usphere.N,upoint,color=WHITE)

v.pickloop()