source: orxonox.OLD/orxonox/branches/dave/importer/windowHandler.cc @ 2931

#include "windowHandler.h"
#include <stdio.h>
void WindowHandler::ReSizeGLScene(GLsizei width, GLsizei height)                // Resize And Initialize The GL Window
{
        if (height==0)                                                                          // Prevent A Divide By Zero By
        {
                height=1;                                                                               // Making Height Equal One
        }

        glViewport(0,0,width,height);                                           // Reset The Current Viewport


        glMatrixMode(GL_PROJECTION);                                            // Select The Projection Matrix
        glLoadIdentity();       


        // Calculate The Aspect Ratio Of The Window
        gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
        gluLookAt (0,0,15, 0,0,0, 0,1,0);

        glMatrixMode(GL_MODELVIEW);                                                     // Select The Modelview Matrix
        glLoadIdentity();                                                                       // Reset The Modelview Matrix

}


int WindowHandler::InitGL(GLvoid)                                                                               // All Setup For OpenGL Goes Here
{
        glEnable(GL_TEXTURE_2D);                                                        // Enable Texture Mapping
        glShadeModel(GL_SMOOTH);                                                        // Enable Smooth Shading
        glClearColor(0.00f, 0.00f, 0.00f, 0.0f);                        // Black Background
        glClearDepth(1.0f);                                                                     // Depth Buffer Setup
        glEnable(GL_DEPTH_TEST);                                                        // Enables Depth Testing
        glDepthFunc(GL_LEQUAL);                                                         // The Type Of Depth Testing To Do
        glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);      // Really Nice Perspective Calculations

    return TRUE;
}


GLvoid WindowHandler::KillGLWindow(GLvoid)                                                              // Properly Kill The Window
{
        SDL_Quit();
}


BOOL WindowHandler::CreateGLWindow(char* title, int width, int height, int bits, BOOL fullscreenflag)
{
        Uint32 flags;
        int size;

        /* Initialize SDL */
        if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
                fprintf(stderr, "Couldn't init SDL: %s\n", SDL_GetError());
                return FALSE;
        }

        flags = SDL_OPENGL;
        if ( fullscreenflag ) {
                flags |= SDL_FULLSCREEN;
        }
        SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE, 1 );
        if ( SDL_SetVideoMode(width, height, 0, flags) == NULL ) {
                return FALSE;
        }
        SDL_GL_GetAttribute( SDL_GL_STENCIL_SIZE, &size);

        ReSizeGLScene(width, height);                                           // Set Up Our Perspective GL Screen

        if (!InitGL())                                                                          // Initialize Our Newly Created GL Window
        {
                KillGLWindow();                                                                 // Reset The Display
                return FALSE;                                                                   // Return FALSE
        }

        return TRUE;                                                                            // Success
}