An orthographic camera defines a parallel projection from a viewpoint. This camera does not diminish objects with distance, as an
SoPerspectiveCamera does. The viewing volume for an orthographic camera is a rectangular parallelepiped
(a box).
By default, the camera is located at (0,0,1) and looks along the negative z-axis; the
position and
orientation fields can be used to change these values. The
height field defines the total height of the viewing volume;
this and the
aspectRatio field determine its width.