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| #include <iostream>
#include <string>
#include "sdlglutils.h"
#include <GL/glu.h>
GLfloat lightAmbient[] = {0.5, 0.5, 0.5, 1.f };
GLfloat lightDiffuse[] = {1, 1, 1, 1.f };
GLfloat lightPosition[] = {0.f, 0.f,10 };
GLuint textureCaisseCote;
GLuint textureCaisseFace;
GLuint textureSol;
double angle1 = 0;
double angle2 = 0;
double fovy = 0;
void dessiner_scene()
{
// Vider l'écran.
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// Placer la camera.
gluLookAt(2+fovy, 1+fovy, 3+fovy, 0, 0, 0, 0, 0, 1);
glRotated(angle1, 1, 0, 0);
glRotated(angle2, 0, 0, 1);
glLightfv(GL_LIGHT0, GL_DIFFUSE, lightDiffuse);
glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmbient);
glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
// Sol.
glBindTexture(GL_TEXTURE_2D, textureSol);
glBegin(GL_QUADS);
glNormal3f(0, 0, -1);
glTexCoord2d(0, 0); glVertex3d(5, -5, -0.5);
glTexCoord2d(5, 0); glVertex3d(5, 5, -0.5);
glTexCoord2d(5, 5); glVertex3d(-5, 5, -0.5);
glTexCoord2d(0, 5); glVertex3d(-5, -5, -0.5);
glEnd();
glBindTexture(GL_TEXTURE_2D, textureCaisseFace);
glBegin(GL_QUADS);
// Face avant.
glNormal3f(1, 0, 0);
glTexCoord2d(0, 0); glVertex3d(1, -0.5, -0.5);
glTexCoord2d(1, 0); glVertex3d(1, 0.5, -0.5);
glTexCoord2d(1, 1); glVertex3d(1, 0.5, 0.5);
glTexCoord2d(0, 1); glVertex3d(1, -0.5, 0.5);
// Face arriere.
glNormal3f(-1, 0, 0);
glTexCoord2d(0, 0); glVertex3d(-1, 0.5, -0.5);
glTexCoord2d(1, 0); glVertex3d(-1, -0.5, -0.5);
glTexCoord2d(1, 1); glVertex3d(-1, -0.5, 0.5);
glTexCoord2d(0, 1); glVertex3d(-1, 0.5, 0.5);
glEnd();
glBindTexture(GL_TEXTURE_2D, textureCaisseCote);
glBegin(GL_QUADS);
// Cote Droit.
glNormal3f(0, 1, 0);
glTexCoord2d(0, 0); glVertex3d(-1, 0.5, -0.5);
glTexCoord2d(1, 0); glVertex3d(1, 0.5, -0.5);
glTexCoord2d(1, 1); glVertex3d(1, 0.5, 0.5);
glTexCoord2d(0, 1); glVertex3d(-1, 0.5, 0.5);
// Cote Gauche.
glNormal3f(0, -1, 0);
glTexCoord2d(0, 0); glVertex3d(-1, -0.5, -0.5);
glTexCoord2d(1, 0); glVertex3d(1, -0.5, -0.5);
glTexCoord2d(1, 1); glVertex3d(1, -0.5, 0.5);
glTexCoord2d(0, 1); glVertex3d(-1, -0.5, 0.5);
// Cote Haut.
glNormal3f(0, 0, 1);
glTexCoord2d(0, 0); glVertex3d(1, 0.5, 0.5);
glTexCoord2d(1, 0); glVertex3d(-1, 0.5, 0.5);
glTexCoord2d(1, 1); glVertex3d(-1, -0.5, 0.5);
glTexCoord2d(0, 1); glVertex3d(1, -0.5, 0.5);
glEnd();
// Proceder à l'affichage.
glFlush();
SDL_GL_SwapBuffers();
}
int main(int argc, char** argv)
{
// Initialisation de la SDL.
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
std::cerr << "Error - Impossible d'initialiser la SDL." << std::endl;
return EXIT_FAILURE;
}
// Parametrage de la fenêtre.
SDL_WM_SetCaption("OpenGL -- Caisse", NULL);
// Ouverture de la fenêtre avec un contexte OpenGL.
SDL_Surface* screen = SDL_SetVideoMode(640, 480, 32, SDL_OPENGL);
if (screen == NULL)
{
std::cerr << "Error - " << SDL_GetError() << std::endl;
return EXIT_FAILURE;
}
// Parametrage de la matrice de projection.
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(70, (double)(640/480), 1, 1000);
// Activation du texturage et de la profondeur.
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHTING);
// Chargement de la texture.
textureCaisseCote = loadTexture("crate06_side_top.jpg");
textureCaisseFace = loadTexture("crate06_front.jpg");
textureSol = loadTexture("sol.jpg");
SDL_Event event;
bool running = true;
SDL_EnableKeyRepeat(10, 10);
while (running)
{
while (SDL_PollEvent(&event))
{
switch (event.type)
{
case SDL_QUIT:
running = false;
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_LEFT)
angle1--;
if (event.key.keysym.sym == SDLK_RIGHT)
angle1++;
if (event.key.keysym.sym == SDLK_UP)
angle2++;
if (event.key.keysym.sym == SDLK_DOWN)
angle2--;
if (event.key.keysym.sym == SDLK_SPACE)
fovy += 0.1;
if (event.key.keysym.sym == SDLK_ESCAPE)
fovy -= 0.1;
break;
}
dessiner_scene();
}
}
// Fermer SDL.
SDL_Quit();
return EXIT_SUCCESS;
} |
