gluPerspective "replacement"

[Srejv]

If you're only using glu.h for gluPerspective, you could use this snippet instead:

Code: [Select]

//additional includes
#include <math.h>

void
gluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar)
{
   GLdouble xmin, xmax, ymin, ymax;

   ymax = zNear * tan(fovy * M_PI / 360.0);
   ymin = -ymax;
   xmin = ymin * aspect;
   xmax = ymax * aspect;


   glFrustum(xmin, xmax, ymin, ymax, zNear, zFar);
}

Got it from this website: http://steinsoft.net/index.php?site=Programming/Code%20Snippets/OpenGL/gluperspective

[Laurent]

Everyone having OpenGL installed should have GLU as well, so I don't think it's a problem. And I also use it to generate mipmaps in the OpenGL sample.

But thanks for the function, it can still be useful