Le source : Exam-TD1-2004-2005-Exo1.cpp
/* Auteur: Nicolas JANEY */
/* nicolas.janey@univ-fcomte.fr */
/* Novembre 2004 */
/* Fonctions de dessin de sphere */
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <GL/glut.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include "ModuleCouleurs.h"
#include "ModuleManipulateur.h"
#include "ModuleMenus.h"
#include "ModuleReshape.h"
#include "ModuleAxes.h"
#ifndef M_PI
#define M_PI 3.14159F
#endif
static float anglex = 0.0F;
static float angley = 0.0F;
static float anglez = 0.0F;
static int n = 10;
GLubyte *makeImage(void) {
GLubyte *img =(GLubyte *) calloc(8*8*3,sizeof(GLubyte));
for ( int i = 0 ; i < 8 ; i++ )
for ( int j = 0 ; j < 8 ; j++ )
if ( ((i+j)%2) == 1 ) {
int ind = 3*(i*8+j);
img[ind] = img[ind+1] = img[ind+2] = 0xFF; }
return(img);
}
void solidSphere(int n) {
for ( int i = 0 ; i < n ; i++ ) {
float a1 = -M_PI/2.0F + i*M_PI/n ;
float a2 = a1 + M_PI/n ;
float cs1 = cos(a1);
float cs2 = cos(a2);
float sn1 = sin(a1);
float sn2 = sin(a2);
float s1 =(float) i/n;
float s2 =(float) (i+1)/n;
glBegin(GL_QUAD_STRIP);
for ( int j = 0 ; j <= n ; j++ ) {
float a = j*2*M_PI/n;
float x1 = cs1*cos(a);
float y1 = cs1*sin(a);
float x2 = cs2*cos(a);
float y2 = cs2*sin(a);
float t =(float) j/n;
glTexCoord2f(s1,t);
glNormal3f(x1,y1,sn1);
glVertex3f(x1,y1,sn1);
glTexCoord2f(s2,t);
glNormal3f(x2,y2,sn2);
glVertex3f(x2,y2,sn2); }
glEnd(); }
}
void display(void) {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
manipulateurSouris();
manipulateurClavier();
axes();
glEnable(GL_TEXTURE_2D);
glPushMatrix();
glTranslatef(1.5F,1.5F,0.0F) ;
glRotatef(anglex,1.0F,0.0F,0.0F);
glRotatef(angley,0.0F,1.0F,0.0F);
glRotatef(anglez,0.0F,0.0F,1.0F);
solidSphere(n) ;
glPopMatrix();
glPushMatrix();
glTranslatef(-1.5F,-1.5F,0.0F) ;
glRotatef(angley,0.0F,1.0F,0.0F);
glRotatef(anglez,0.0F,0.0F,1.0F);
glRotatef(anglex,1.0F,0.0F,0.0F);
solidSphere(n) ;
glPopMatrix();
glPushMatrix();
glTranslatef(-1.5F,1.5F,0.0F) ;
glRotatef(anglez,0.0F,0.0F,1.0F);
glRotatef(anglex,1.0F,0.0F,0.0F);
glRotatef(angley,0.0F,1.0F,0.0F);
solidSphere(n) ;
glPopMatrix();
glPushMatrix();
glTranslatef(1.5F,-1.5F,0.0F) ;
glRotatef(angley,0.0F,1.0F,0.0F);
glRotatef(anglex,1.0F,0.0F,0.0F);
glRotatef(anglez,0.0F,0.0F,1.0F);
solidSphere(n) ;
glPopMatrix();
glDisable(GL_TEXTURE_2D);
glPopMatrix();
glFlush();
glutSwapBuffers();
}
void myinit (void) {
glClearColor(0.75F,0.75F,0.75F,0.0F);
glShadeModel(GL_SMOOTH);
glEnable(GL_NORMALIZE);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHT2);
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexImage2D(GL_TEXTURE_2D,0,3,8,8,0,GL_RGB,GL_UNSIGNED_BYTE,makeImage());
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
float dir0[4] = { 1.0F,1.0F,1.0F,0.0F };
glLightfv(GL_LIGHT0,GL_POSITION,dir0) ;
glLightfv(GL_LIGHT0,GL_DIFFUSE,couleurVert()) ;
float dir1[4] = { -1.0F,1.0F,1.0F,0.0F };
glLightfv(GL_LIGHT1,GL_POSITION,dir1) ;
glLightfv(GL_LIGHT1,GL_DIFFUSE,couleurBleu()) ;
float dir2[4] = { 0.0F,-1.0F,1.0F,0.0F };
glLightfv(GL_LIGHT2,GL_POSITION,dir2) ;
glLightfv(GL_LIGHT2,GL_DIFFUSE,couleurRouge()) ;
}
void key(unsigned char key,int x,int y) {
static int aff = 1;
if ( keyManipulateur(key,x,y) )
glutPostRedisplay();
else
switch ( key ) {
case 43 : n++ ;
glutPostRedisplay();
break ;
case 45 : n-- ;
if ( n < 3 )
n = 3 ;
glutPostRedisplay();
break ;
case ' ' : switchAffichagePlan();
glutPostRedisplay();
break;
case 0x0D : aff = !aff;
glPolygonMode(GL_FRONT_AND_BACK,(aff) ? GL_FILL : GL_LINE);
glutPostRedisplay(); }
}
void idle(void) {
anglex += 0.33F;
angley += 0.44F;
anglez += 0.55F;
glutPostRedisplay();
}
int main(int argc,char **argv) {
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
glutInitWindowSize(250,250);
glutInitWindowPosition(50,50);
glutCreateWindow("Spheres");
myinit();
creationMenuBasique();
setParametresOrthoBasique(-3.0F,3.0F,-3.0F,3.0F,-500.0,500.0);
setManipulateurDistance(1.0F);
glutReshapeFunc(reshapeOrthoBasique);
glutKeyboardFunc(key);
glutSpecialFunc(specialBasique);
glutMotionFunc(motionBasique);
glutMouseFunc(sourisBasique);
glutIdleFunc(idle);
glutDisplayFunc(display);
glutMainLoop();
return(0);
}
RETOUR