Re: [PyOpenGL-Users] A big problem with glOrtho

[Ian M. <geo...@gm...>]

Definitely recommend using a perspective matrix for your first OpenGL
programs.  I use this class for perspective:

class glLibView3D():
    def __init__(self,rect,angle,near=0.1,far=1000.0):
        self.rect = list(rect)
        self.angle = angle
        self.near = near
        self.far = far
    def set_angle(self,value):
        self.angle = angle
    def set_near(self,value):
        self.near = value
    def set_far(self,value):
        self.far = value
    def set_view(self):
        glViewport(*self.rect)
        glMatrixMode(GL_PROJECTION)
        glLoadIdentity()
        gluPerspective(self.angle,float(self.rect[2])/float(self.rect[3]),\
        self.near,self.far)
        glMatrixMode(GL_MODELVIEW)
        glLoadIdentity()

HTH,
Ian