Question

OpenGL - glu.h, gl.h

Asked by: shilpi84

from where can i download glu.h and gl.h for windows xp?

i downloaded the glut 3.7.6 package but these files were'nt present in it..  

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Asked On
2006-07-31 at 23:21:50ID21938667
Tags

download

Topic

Game Programming

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Answers

 

by: shilpi84Posted on 2006-08-01 at 00:06:41ID: 17221660

// i found these header files
// now i have another question ::  how do i run this program (its from OpenGL distilled - Addison Wesley)
// which compiler should i use?
// i am not able to run it in turbo C++ 3.0,Dev-Cpp 5.0 , MS visual studio '05...

#include <GL/glut.h>
#include <GL/glu.h>
#include <GL/gl.h>
#include <string>
#include <sstream>
#include <assert.h>

// Define an ID for the "Quit" menu item.
static const int QUIT_VALUE( 99 );

// Global variable to hold display list ID
GLuint listID;


//
// GLUT display callback. Called by GLUT when the window
// needs redrawing.
static void display()
{
    glClear( GL_COLOR_BUFFER_BIT );

    // Modeling transform, move geometry 4 units back in Z.
    glLoadIdentity();
    glTranslatef( 0.f, 0.f, -4.f );

    // Draw the geometry
    glCallList( listID );

    // Swap buffers (display the rendered image).
    glutSwapBuffers();

    assert( glGetError() == GL_NO_ERROR );
}

//
// GLUT resize callback, called when window size changes.
static void reshape( int w, int h )
{
    // Update the viewport to draw to the full window
    glViewport( 0, 0, w, h );

    // Update the projection matrix / aspect ratio
    glMatrixMode( GL_PROJECTION );
    glLoadIdentity();
    gluPerspective( 50., (double)w/(double)h, 1., 10. );

    // Leave us in model-view mode for our display routine
    glMatrixMode( GL_MODELVIEW );

    assert( glGetError() == GL_NO_ERROR );
}

//
// GLUT menu callback, called when user selects a menu item.
static void mainMenuCB( int value )
{
    if (value == QUIT_VALUE)
        exit( 0 );
}


static void init()
{
    // Dither is on by default but not needed, disable it.
    glDisable( GL_DITHER );

    // Determine whether or not vertex arrays are available.
    // In other words, check for OpenGL v1.1...
    std::string ver((const char*) glGetString( GL_VERSION ));
    assert( !ver.empty() );
    std::istringstream verStream( ver );

    int major, minor;
    char dummySep;
    verStream >> major >> dummySep >> minor;
    const bool useVertexArrays = ( (major >= 1) && (minor >= 1) );

    const GLfloat data[] = {
        -1.f, -1.f, 0.f,
        1.f, -1.f, 0.f,
        0.f, 1.f, 0.f };

    if (useVertexArrays)
    {
        // Set up for using vertex arrays.
        glEnableClientState( GL_VERTEX_ARRAY );
        glVertexPointer( 3, GL_FLOAT, 0, data );
    }

    // Create a new display list.
    listID = glGenLists( 1 );
    glNewList( listID, GL_COMPILE );

    if (useVertexArrays)
        // Vertex arrays are available in OpenGL 1.1, use them.
        glDrawArrays( GL_TRIANGLES, 0, 3 );

    else
    {
        // Use OpenGL 1.0 Begin/End interface.
        glBegin( GL_TRIANGLES );
        glVertex3fv( &data[0] );
        glVertex3fv( &data[3] );
        glVertex3fv( &data[6] );
        glEnd();
    }

    glEndList();

    assert( glGetError() == GL_NO_ERROR );

    // Register our display and resize callbacks with GLUT.
    glutDisplayFunc( display );
    glutReshapeFunc( reshape );

    // Create a right-mouse menu to allow users to exit.
    int mainMenu = glutCreateMenu( mainMenuCB );
    glutAddMenuEntry( "Quit", QUIT_VALUE );
    glutAttachMenu( GLUT_RIGHT_BUTTON );
}

int main( int argc, char** argv )
{
    glutInit( &argc, argv );

    // Create a single GLUT window, 300x300 pixels, RGB mode,
    // and double-buffered. Call it "Simple Example".
    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
    glutInitWindowSize( 300, 300 );
    glutCreateWindow( "Simple Example" );

    init();

    // Loop for events.
    glutMainLoop();

    return 0;
}


 

by: JoseParrotPosted on 2006-08-01 at 05:57:55ID: 17223279

Hi,

The headers gl.h and glu.h are components of OpenGL package, found at www.opengl.org.

Just to remember and avoid confusion:
GLU - OpenGL Utility Library
GLUT - OpenGL Utility Toolkit

I have noticed in your code that you are using the GLUT Library.
It is another package, not included in the OpenGL official pack.
You will need also the header glut.h, as well the other files of GLUT.
The GLUT Library is available at the opengl.org site too.

Please note, GLUT is not free software, althought we can donwload it for free.
Also, there are other implementations of such library, at:
- Nate Robins' library: http://www.xmission.com/~nate/glut.html
- freeglut: http://freeglut.sourceforge.net
- OpenGlut: http://openglut.sourceforge.net

Hope it helps!

Jose

 

by: shilpi84Posted on 2006-08-01 at 06:13:55ID: 17223398

where is the OpenGL package at www.opengl.org

 

by: JoseParrotPosted on 2006-08-01 at 09:10:45ID: 17225180

Hi,

Actually the APIs are for download at Microsoft, Apple or other O.S. vendor.
Please take a look at http://www.opengl.org/documentation/implementations/.
For Windows, the self-extracting file opengl95.exe is pointed from there. This package has the gl.h and glu.h you are searching for.

By the way, if you don't have such headers, probably don't have also other must to have files, as OPENGL.DLL, GLU.DLL and OPENGL32.LIB and GLU32.LIB (don't use the oldfashioned AUX files, the GLUTs are better). The DLLs should be placed at SYSTEM32 Windows directory. And the LIBs' path should be configured in your compiler/linker.

Jose

 

by: JoseParrotPosted on 2006-08-01 at 13:52:08ID: 17228179

Hi,

Did you changed the question?
In the code there is a comment that you find the headers, and another comment asking about which compiler to use to the code from the Distiller book.

If it is a new question (as it has an essentially new subject), please post it as a new one.

I am not sure if Turbo C++ 3.0 (it is a Windows 3.1 program) works.
My guess is NO.
As far I am understanding, if the OpenGL (from Microsoft opengl95.exe) and the toolkit (from the sites I described before) are installed and the compiler is the MS VC++ 5 or the Dec-Cpp, it should compile, link and run properly. Which error messages do you receive? At compile or at run time?

Jose

 

by: shilpi84Posted on 2006-08-02 at 02:59:45ID: 17231522

thanks Jose u answeres my initial question .. i'm going to download it n try to compile it using Dev-Cpp ..
although i've switched from OpenGL(2.0) Distilled to a tutorial at nehe.gamedev.net .. it's actually OpenGL 1.4 but it's 10 times better than OpenGL Distilled ..

20120131-EE-VQP-002

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