NEED HELP! OpenGL code for my exam doesn't work

mr02077
Unregistered
 
Post: #1
Hello, I'm Dusan from Serbia. I have to hand this OpenGL code soon - and that's my exam on university, but this part doesn't work. I'm using .Net studio on Windows and Tao OpenGL wrapper:

void update_viewpoint(void)
{
double modelview[16];
double projection[16];
int viewport[4];
double m[3];

Gl::glGetDoublev(Gl::GL_MODELVIEW_MATRIX, modelview);
Gl::glGetDoublev(Gl::GL_PROJECTION_MATRIX, projection);
Gl::glGetIntegerv(Gl::GL_VIEWPORT, viewport);

Glu::gluUnProject(viewport[2] / 2, viewport[3] / 2, 0,
modelview, projection, viewport, m, m+1, m+2);

viewpoint[0]=m[0];
viewpoint[1]=m[1];
viewpoint[2]=m[2];
}

I'm getting this error:
e:\twisphere\Form1.h(232): error C2664: 'Tao::OpenGl::Glu::gluUnProject' : cannot convert parameter 4 from 'double [16]' to 'double __gc[]'

Appreciate any help.
Quote this message in a reply
Moderator
Posts: 1,140
Joined: 2005.07
Post: #2
Since you're using .NET, I'm assuming you're using C#. I know that arrays and pointers are treated differently, which is likely the cause of your problem. Unfortunately, I can't get any more specific than that since I have never used C#. In fact, I doubt you'll get a lot of help here regardless: notice the subtitle at the top: "The Macintosh Game Developer's Community." Some people here may have worked with C# before, whether it be at work or by developing Windows stuff along with their Mac stuff, but this community is mainly Mac based.
Quote this message in a reply
Moderator
Posts: 679
Joined: 2002.11
Post: #3
I'm with akb825. Are there other students who have working code who you could ask? Or other, more relevant forums? A quick Googling should do the trick.

(See OSC? I was nicer this time! Rasp)

My web site - Games, music, Python stuff
Quote this message in a reply
Post Reply 

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  starting to work with openGL, need some help smartalco 1 2,536 Mar 26, 2007 08:21 PM
Last Post: arekkusu
  SDL/OpenGL Initialization Code Nick 15 6,859 Sep 7, 2005 07:28 AM
Last Post: Nick
  OpenGL code optimization unknown 38 12,799 Jul 28, 2005 10:22 PM
Last Post: unknown
  OpenGL Source Code Generator Leisure Suit Lurie 2 3,789 Jul 5, 2005 11:55 AM
Last Post: Cochrane
  bus error with opengl code mnorton 2 3,643 Jan 21, 2005 02:53 PM
Last Post: ThemsAllTook