!viewpoint¶

Zadano
x = (xmin + xmax)/2.0,
y = ymin + 1.5 *(ymax – ymin),
z = zmin + 1.5 *(zmax – zmin)

(Zadano: središte podataka)

up_direction: okvir pogleda zadaje se pomoću Viewpoint, look_at_point i up_direction.
              default : 0.0 0.0 1.0

View coordinate frame:
               Ishodište    : look_at_point
               z-os     : viewpoint - look_at_point
               x-os     : up × z-os
               y-os     : z-os × x-os