My Graphics engine problem

>>how can I expand this Viewing Volume? I call glFrustrum right before I render and also right before I push the matrix. I'm so used to having the "Direct X" way where if I want to see a larger area I just move the camera back, but here since everything is in "Model" mode <<

im not 100% sure what u meant,
*u are calling glFrustum (or gluPerspective) only once per frame (at the start) and not per object. to make it so u can see a larger area make the first 4 number of the frustum call bigger (if u use gluPerspective make the first number bigger).

>>I can look at it in different ways using gluLookAt but the "Box" is still from (seems like) -1 1 along the X Y Z so all my varibles I have to scale by a factor of 1000ths but I want to be able to work with integers! Any thoughts?<<

im not to sure, do u want the original size to change from -1,1 to say -100,100. if so the best way is to change the meshes size when u load it (or in the modelling program). ekse u can let opengl do this with glScale(100,100,100) beware though if u use lighting the normals are also scaled.

I looked into it, I think my correct path would be changing the
Matrix mode to GL_Perspective

glMatrixMode(GL_PERSPECTIVE);
glFrustum(-100,100,-100,100,0,100);
glMatrixMode(GL_MODELVIEW);

but sigh the viewing volume is still -1 to 1 on all axes. When my character jumps 20 "units" he disappears....because the volume is too small : (. I do this every "frame". every time I render...

How do you guys change the volume?
In addition without changing the matrix mode still does nothing :'('' any thoughts?

Biggest fool ever.

I don't need to change the Matrix mode...?

Ok that frustum call I can change the near plane, I know that for sure because when its greater than 0 nothing appears...

The object is still the same size tho. I would figure if I make the volume bigger...the objects would get smaller?

I'm gonna google this thing but if anybody knows exactly what I need plz feel free to jump in while i'm trying to figure this thing out.

try using gluPerspetive instead of Frustum (easier to understand) once u have that sorted out go back to frustum if u wish

Objects will not appear any smaller when they are farther away if your viewing frustum is a box. They will all be projected in an orthographic way. If you want a distance effect, then you need to use gluPerspective(...) (sets up a pyramid shaped viewing frustum) and gluLookAt(...) (positions the 'camera' and tells it where to look). It might look something like this, in your rendering code:


In the case that I misunderstood you, and you want an orthographic projection, use glOrtho(...), instead of glFrustum(...).
Well, I hope that helps. Good luck with your program.