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#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <GL/glut.h>
#include <GL/gl.h>
#include <GL/glu.h>
/* Variables et constantes globales */
/* pour les angles et les couleurs utilises */
#ifndef M_PI
#define M_PI 3.14159
#endif
/* Variables et constantes globales */
/* pour les angles et les couleurs utilises */
static float rx = 0.0F;
static float ry = 0.0F;
static float rz = 0.0F;
static const float noir[] = { 0.0F,0.0F,0.0F,1.0F };
static const float grisClair[] = { 0.7F,0.7F,0.7F,1.0F };
static const float grisFonce[] = { 0.3F,0.3F,0.3F,1.0F };
static const float blanc[] = { 1.0F,1.0F,1.0F,1.0F };
static const float jaune[] = { 1.0F,1.0F,0.0F,1.0F };
static const float rouge[] = { 1.0F,0.0F,0.0F,1.0F };
static const float vert[] = { 0.0F,1.0F,0.0F,1.0F };
static const float bleu[] = { 0.0F,0.0F,1.0F,1.0F };
static const float bleuatre[] = { 0.4F,0.4F,1.0F,1.0F };
static const float jaunatre[] = { 0.6F,0.6F,0.0F,1.0F };
static const float jauneClair[] = { 1.0F,1.0F,0.7F,1.0F };
static int n = 36;
static int m = 36;
//Gestion camera
static float ex = 0.0;
static float ey = 0.0;
static float ez = 20.0;
/* Fonction d'initialisation des parametres */
/* OpenGL ne changeant pas au cours de la vie */
/* du programme */
void init(void) {
const GLfloat shininess[] = { 50.0 };
glMaterialfv(GL_FRONT,GL_SPECULAR,blanc);
glMaterialfv(GL_FRONT,GL_SHININESS,shininess);
glLightfv(GL_LIGHT0,GL_DIFFUSE,blanc);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glEnable(GL_NORMALIZE);
glEnable(GL_AUTO_NORMAL);
}
/* Scene dessinee */
void mySolidCylinder(int n,int m) {
glPushMatrix();
for ( int j = 0 ; j < m ; j++ ) {
float hi = 1.0F-j*2.0F/m;
float hf = hi-2.0F/m;
glBegin(GL_QUAD_STRIP);
for( int i = 0 ; i <= n ; i++ ){
float a = (2*M_PI*i)/n;
float sn = -sin(a);
float cs = cos(a);
glNormal3f(cs,0.0F,sn);
glVertex3f(cs,hi,sn);
glVertex3f(cs,hf,sn); }
glEnd(); }
glPopMatrix();
}
void scene() {
glPushMatrix();
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,1);
glMaterialfv(GL_FRONT,GL_AMBIENT,noir);
glMaterialfv(GL_FRONT,GL_EMISSION,noir);
glMaterialfv(GL_FRONT,GL_DIFFUSE,jaune);
glMaterialfv(GL_FRONT,GL_SPECULAR,jauneClair);
glMaterialf(GL_FRONT,GL_SHININESS,60.0F);
glMaterialfv(GL_BACK,GL_AMBIENT,noir);
glMaterialfv(GL_BACK,GL_EMISSION,noir);
glMaterialfv(GL_BACK,GL_DIFFUSE,grisClair);
glMaterialfv(GL_BACK,GL_SPECULAR,grisFonce);
glMaterialf(GL_BACK,GL_SHININESS,110.0F);
mySolidCylinder(n,m);
glPopMatrix();
}
/* Fonction executee lors d'un rafraichissement */
/* de la fenetre de dessin */
void display(void) {
glClearColor(0.5F,0.5F,1.0F,1.0F) ;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
const GLfloat light0_position[] = { 1.0,1.0,1.0,0.0 };
glLightfv(GL_LIGHT0,GL_POSITION,light0_position);
glPushMatrix();
glRotatef(rx,1.0F,0.0F,0.0F);
glRotatef(ry,0.0F,1.0F,0.0F);
glRotatef(rz,0.0F,0.0F,1.0F);
scene();
glPopMatrix();
glFlush();
glutSwapBuffers();
}
/* Fonction executee lorsqu'aucun evenement */
/* n'est en file d'attente */
void idle(void) {
rx += 0.04129F;
ry += 0.04129F;
rz += 0.04129F;
glutPostRedisplay() ;
}
/* Fonction executee lors d'un changement */
/* de la taille de la fenetre OpenGL */
void reshape(int x,int y) {
glViewport(0,0,x,y);
glMatrixMode(GL_PROJECTION) ;
glLoadIdentity() ;
gluPerspective(18.0F,(float) x/y,1.0,500.0) ;
glMatrixMode(GL_MODELVIEW) ;
glLoadIdentity() ;
gluLookAt(ex,ey,ez,0.0,0.0,0.0,0.0,1.0,0.0);
}
/* Fonction executee lors de l'appui */
/* d'une touche alphanumerique du clavier */
void keyboard(unsigned char key,int x,int y) {
switch (key) {
case 0x20 :
{
static int anim = 1;
anim = !anim;
glutIdleFunc(( anim ) ? idle : NULL);
}
break;
case 'z' :
{
n++;
m++;
glutPostRedisplay();
}
break;
case 'e' :
{
n--;
m--;
glutPostRedisplay();
}
break;
case 'a' :
{ static int face = 1;
face = !face;
glPolygonMode(GL_FRONT_AND_BACK,( face ) ? GL_FILL : GL_LINE); }
glutPostRedisplay();
break;
case 0x1B :
exit(0);
break; }
}
void GestionSpecial(int key, int x, int y)
{
switch (key)
{
case GLUT_KEY_LEFT :
printf("GAUCHE");
ey = ey - 0.014159;
gluLookAt(ex,ey,ez,0.0,0.0,0.0,0.0,1.0,0.0);
glutPostRedisplay();
break;
case GLUT_KEY_UP :
printf("AVANCE");
ez = ez - 0.014159;
gluLookAt(ex,ey,ez,0.0,0.0,0.0,0.0,1.0,0.0);
glutPostRedisplay();
break;
case GLUT_KEY_RIGHT :
printf("DROITE");
ey = ey + 0.014159;
gluLookAt(ex,ey,ez,0.0,0.0,0.0,0.0,1.0,0.0);
glutPostRedisplay();
break;
case GLUT_KEY_DOWN :
printf("RECULE");
ez += 0.014159;
gluLookAt(ex,ey,ez,0.0,0.0,0.0,0.0,1.0,0.0);
glutPostRedisplay();
break;
}
}
/* Fonction principale */
int main(int argc,char **argv) {
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
glutInitWindowSize(800,500);
glutInitWindowPosition(50,50);
glutCreateWindow("gestion des lumieres et materiaux");
init();
glutKeyboardFunc(keyboard);
glutSpecialFunc(GestionSpecial);
glutReshapeFunc(reshape);
glutIdleFunc(idle);
glutDisplayFunc(display);
glutMainLoop();
return(0);
} |
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