Le source : Exam-TD1-2004-2005-Exo4.cpp
/* Auteur: Nicolas JANEY */
/* nicolas.janey@univ-fcomte.fr */
/* Novembre 2004 */
/* Animation en OpenGL + GLUT */
#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 "ModuleMenus.h"
#include "ModuleFont.h"
#include "ModuleReshape.h"
static int image = 0;
static int n = 600;
static int f1;
static int f2;
static int carre = 0;
void calculPosition(int image,int n,float *x,float *y) {
float l = 20.0F*image/(float) n;
if ( l < 5.0 ) {
*x = 2.5F;
*y = -2.5F + l;
return; }
if ( l < 10.0 ) {
*x = 7.5F - l;
*y = 2.5F;
return; }
if ( l < 15.0 ) {
*x = -2.5F;
*y = 12.5F - l;
return; }
*x = -17.5F + l;
*y = -2.5F;
}
void dessineTrajectoireCarree(void) {
glBegin(GL_LINE_LOOP);
glVertex2f(-2.5F,-2.5F);
glVertex2f(2.5F,-2.5F);
glVertex2f(2.5F,2.5F);
glVertex2f(-2.5F,2.5F);
glEnd();
}
void display1() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
if ( carre )
dessineTrajectoireCarree();
float x;
float y;
calculPosition(image,n,&x,&y);
glTranslatef(x,y,0.0F);
glutSolidSphere(1.0,120,120);
glPopMatrix();
glFlush();
glutSwapBuffers() ;
}
void display2() {
glClearColor(0.5F,0.5F,0.5F,1.0F);
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glPushMatrix();
float x;
float y;
calculPosition(image,n,&x,&y);
float pos = 1.0F;
glColor4fv(couleurNoir());
placeFontCursor(5.0F,-pos*20.0F,0.0F) ;
simpleBitmapOutput(1,REGULAR8x13,"Image %4d sur %4d",image,n) ;
pos += 1;
placeFontCursor(5.0F,-pos*20.0F,0.0F) ;
simpleBitmapOutput(1,REGULAR8x13,"P : %7.3f %7.3f",x,y) ;
glPopMatrix();
glutSwapBuffers();
}
void reshape2(int w,int h) {
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0,w,-h,0,-1.0,1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
void idle(void) {
image++;
if ( image == n )
image = 0;
glutPostWindowRedisplay(f1);
glutPostWindowRedisplay(f2);
}
void key(unsigned char key,int x,int y) {
switch ( key ) {
case 43 : n++ ;
glutPostWindowRedisplay(f1);
glutPostWindowRedisplay(f2);
break;
case 45 : n-- ;
if ( n < 2 )
n = 2;
if ( image >= n )
image = n-1;
glutPostWindowRedisplay(f1);
glutPostWindowRedisplay(f2);
break;
case ' ' : carre = !carre;
glutPostWindowRedisplay(f1);
glutPostWindowRedisplay(f2);
break;
case 0x0D : { static int anim = 1;
anim = !anim;
if ( anim )
glutIdleFunc(idle);
else
glutIdleFunc(NULL); }
break;
case 0x1B : exit(0);
break; }
}
void myinit() {
glClearColor(0.8F,0.8F,0.8F,1.0F);
GLfloat mat_shininess[] = { 50.0 };
GLfloat light0_position[] = { 1.0,1.0,1.0,0.0 };
GLfloat light1_position[] = { -1.0,1.0,1.0,0.0 };
GLfloat light2_position[] = { 1.0,-1.0,1.0,0.0 };
glMaterialfv(GL_FRONT,GL_SPECULAR,couleurBlanc());
glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess);
glLightfv(GL_LIGHT0,GL_DIFFUSE,couleurRouge());
glLightfv(GL_LIGHT1,GL_DIFFUSE,couleurVert());
glLightfv(GL_LIGHT2,GL_DIFFUSE,couleurBleu());
glLightfv(GL_LIGHT0,GL_POSITION,light0_position);
glLightfv(GL_LIGHT1,GL_POSITION,light1_position);
glLightfv(GL_LIGHT2,GL_POSITION,light2_position);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHT2);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glEnable(GL_NORMALIZE);
glEnable(GL_AUTO_NORMAL);
}
int main(int argc,char **argv) {
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
glutInitWindowSize(250,250);
glutInitWindowPosition(50,50);
f1 = glutCreateWindow("Animation OpenGL + GLUT");
myinit();
creationMenuBasique();
setParametresOrthoBasique(-4.0,4.0,-4.0,4.0,-50.0,50.0);
glutReshapeFunc(reshapeOrthoBasique);
glutKeyboardFunc(key);
glutIdleFunc(idle);
glutDisplayFunc(display1);
glutInitWindowSize(200,50);
glutInitWindowPosition(60,340);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
f2 = glutCreateWindow("Position sphère");
creationMenuBasique();
glutDisplayFunc(display2);
glutReshapeFunc(reshape2);
glutKeyboardFunc(key);
glutMainLoop();
return(0);
}
RETOUR