This is an important method because it sets the OpenGL projection matrix. It uses all the params that we inizializate
when we call to setParams method and it take care about which eye is "open" so, in function of this factor it makes
a matrix with perspective begining on the path_l, the path_r or the central eye.
(in GLSV.dll) Version: 1.2009.6.26 (1.2009.06.26)
public void Perspective()
|Visual Basic (Declaration)|
Public Sub Perspective