from pygeo import * v=display(scale=3, axis=True, camera_vector=(0,2,-1)) u=uSlider(PI/7,-PI/7,color=WHITE) zplane=zPlane(color=WHITE,grid_scale=20) plane=Plane(u,zplane,color=BLUE,grid_scale=20) uSphereSlice(plane,color=RED) #refences objects uSphere() v.pickloop()