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source: orxonox.OLD/orxonox/branches/images/importer/windowHandler.cc @ 3105

Last change on this file since 3105 was 2936, checked in by bensch, 20 years ago

orxonox/trunk/importer: dynamic frame-size-reading

File size: 2.0 KB
Line 
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2
3#include "windowHandler.h"
4#include <stdio.h>
5void WindowHandler::ReSizeGLScene(GLsizei width, GLsizei height) // Resize And Initialize The GL Window
6{
7        if (height==0)  // Prevent A Divide By Zero By
8        {
9                height=1;// Making Height Equal One
10        }
11
12        glViewport(0,0,width,height); // Reset The Current Viewport
13
14       
15        glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
16        glLoadIdentity();       
17
18
19        // Calculate The Aspect Ratio Of The Window
20        gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
21        gluLookAt (0,0,15, 0,0,0, 0,1,0);
22
23        glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
24        glLoadIdentity(); // Reset The Modelview Matrix
25
26}
27
28
29int WindowHandler::InitGL(GLvoid)                                                                               // All Setup For OpenGL Goes Here
30{
31        glEnable(GL_TEXTURE_2D); // Enable Texture Mapping
32        glShadeModel(GL_SMOOTH); // Enable Smooth Shading
33        glClearColor(0.00f, 0.00f, 0.00f, 0.0f); // Black Background
34        glClearDepth(1.0f);  // Depth Buffer Setup
35        glEnable(GL_DEPTH_TEST); // Enables Depth Testing
36        glDepthFunc(GL_LEQUAL); // The Type Of Depth Testing To Do
37        glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);  // Really Nice Perspective Calculations
38
39    return TRUE;
40}
41
42
43GLvoid WindowHandler::KillGLWindow(GLvoid) // Properly Kill The Window
44{
45        SDL_Quit();
46}
47
48
49BOOL WindowHandler::CreateGLWindow(char* title, int width, int height, int bits, BOOL fullscreenflag)
50{
51        Uint32 flags;
52        int size;
53
54        /* Initialize SDL */
55        if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
56                fprintf(stderr, "Couldn't init SDL: %s\n", SDL_GetError());
57                return FALSE;
58        }
59
60        flags = SDL_OPENGL;
61        if ( fullscreenflag ) {
62                flags |= SDL_FULLSCREEN;
63        }
64        SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE, 1 );
65        if ( (screen = SDL_SetVideoMode(width, height, 0, flags)) == NULL ) {
66                return FALSE;
67        }
68        SDL_GL_GetAttribute( SDL_GL_STENCIL_SIZE, &size);
69
70        ReSizeGLScene(width, height); // Set Up Our Perspective GL Screen
71
72        if (!InitGL()) // Initialize Our Newly Created GL Window
73        {
74          KillGLWindow();  // Reset The Display
75          return FALSE;
76        }
77
78        return TRUE;
79}
80
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