Le source: SchemaReflexion.cpp
/* Auteur: Nicolas JANEY */
/* nicolas.janey@univ-fcomte.fr */
/* Janvier 2002 */
/* Schema du calcul de l'angle */
/* de reflexion */
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <GL/glut.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include "ModuleCouleurs.h"
#include "ModuleFleche.h"
#include "ModuleDessinArc.h"
#include "ModuleMatriceVecteur.h"
#include "ModuleFont.h"
#include "ModuleManipulateur.h"
#include "ModuleMenus.h"
#include "ModuleReshape.h"
static vecteur p = { -9.0F,9.0F,0.0F,1.0F } ;
static vecteur r ;
static vecteur i ;
static vecteur n = { 0.0F,1.0F,0.0F } ;
static float thetai ;
static int f1;
static int f2;
void myinit(void) {
GLfloat light_position0[] = { 1.0F,0.0F,1.0F,0.0F };
GLfloat light_position1[] = { -1.0F,0.0F,1.0F,0.0F };
glLightfv(GL_LIGHT0,GL_AMBIENT,couleurNoir());
glLightfv(GL_LIGHT0,GL_DIFFUSE,couleurBlanc());
glLightfv(GL_LIGHT1,GL_DIFFUSE,couleurBlanc());
glLightfv(GL_LIGHT0,GL_SPECULAR,couleurNoir());
glLightfv(GL_LIGHT0,GL_POSITION,light_position0);
glLightfv(GL_LIGHT1,GL_POSITION,light_position1);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_AUTO_NORMAL);
glEnable(GL_NORMALIZE);
glDepthFunc(GL_LESS);
glEnable(GL_ALPHA_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
}
void reflexion(vecteur p) {
glColor4fv(couleurRouge()) ;
r[0] = -p[0] ;
r[1] = p[1] ;
r[2] = -p[2] ;
normalise(r) ;
i[0] = p[0] ;
i[1] = p[1] ;
i[2] = p[2] ;
normalise(i) ;
thetai = acos(produitScalaire(r,n))*180.0F/3.14159F ;
flecheEnVolume(10*r[0],10*r[1],10*r[2],0.35F,1.5F,0.07F);
traceAngleFleche(n,r,30,7.0F,1,2,8.0F,0.5F) ;
vecteur pint;
positionIntermediaire(n,r,7.0F,pint);
placeFontCursor(pint[0],pint[1],pint[2]) ;
deplacementCursor(0,-10,0) ;
simpleBitmapOutput(1,SYMBOL,"q") ;
deplacementCursor(7,-8,0) ;
simpleBitmapOutput(1,REGULAR6x10,"r") ;
placeFontCursor(5*r[0],5*r[1],5*r[2]) ;
deplacementCursor(5,15,0) ;
simpleBitmapOutput(1,REGULAR8x13,"R") ;
deplacementCursor(2,10,0) ;
simpleBitmapOutput(1,DESSIN,"TF") ;
}
void displayRayons(void) {
reflexion(p);
glPushMatrix();
glMaterialfv(GL_FRONT,GL_DIFFUSE,couleurJaune()) ;
glPushMatrix();
glTranslatef(p[0],p[1],p[2]) ;
glEnable(GL_LIGHTING);
glEnable(GL_CULL_FACE);
glutSolidSphere(0.5,10,10);
glDisable(GL_CULL_FACE);
glDisable(GL_LIGHTING);
glPopMatrix();
glColor4fv(couleurJaune()) ;
placeFontCursor(i[0]*5,i[1]*5,i[2]*5) ;
deplacementCursor(-15,15,0) ;
simpleBitmapOutput(1,REGULAR8x13,"I") ;
deplacementCursor(-18,10,0) ;
simpleBitmapOutput(1,DESSIN,"TF") ;
flecheEnVolume(i[0]*10,i[1]*10,i[2]*10,0.35F,1.5F,0.07F);
traceAngleFleche(n,i,30,7.0F,1,2,8.0F,0.5F) ;
vecteur pint;
positionIntermediaire(n,i,7.0F,pint);
placeFontCursor(pint[0],pint[1],pint[2]) ;
deplacementCursor(0,-10,0) ;
simpleBitmapOutput(1,SYMBOL,"q") ;
deplacementCursor(7,-8,0) ;
simpleBitmapOutput(1,REGULAR6x10,"i") ;
glColor4fv(couleurJaune(0.3F)) ;
segmentEnVolume(p[0],p[1],p[2],0.07F);
glColor4fv(couleurMagenta()) ;
placeFontCursor(0.0F,8.0F,0.0F) ;
deplacementCursor(10,0,0) ;
simpleBitmapOutput(1,REGULAR8x13,"N") ;
deplacementCursor(7,-5,0) ;
simpleBitmapOutput(1,DESSIN,"TF") ;
flecheEnVolume(0.0F,10.0F,0.0F,0.35F,1.5F,0.07F);
glPopMatrix();
}
void display(void) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glPushMatrix() ;
glTranslatef(0.0F,-2.0F,0.0F);
manipulateurSouris();
manipulateurClavier();
displayRayons() ;
glEnable(GL_LIGHTING);
glPushMatrix();
glMaterialfv(GL_FRONT,GL_DIFFUSE,couleurBlanc(0.5F)) ;
glScalef(16.0F,0.0001F,14.0F) ;
glEnable(GL_CULL_FACE);
glutSolidCube(1.0) ;
glDisable(GL_CULL_FACE);
glPopMatrix();
glDisable(GL_LIGHTING);
glPopMatrix() ;
glDisable(GL_DEPTH_TEST);
glFlush();
glutSwapBuffers() ;
glutPostWindowRedisplay(f2);
}
void key2(unsigned char key,int x,int y) {
switch ( key ) {
case '1' : p[0] -= 0.2F ;
glutPostWindowRedisplay(f1);
break;
case '4' : p[0] += 0.2F ;
glutPostWindowRedisplay(f1);
break;
case '2' : p[1] -= 0.2F ;
glutPostWindowRedisplay(f1);
break;
case '5' : p[1] += 0.2F ;
glutPostWindowRedisplay(f1);
break;
case '3' : p[2] -= 0.2F ;
glutPostWindowRedisplay(f1);
break;
case '6' : p[2] += 0.2F ;
glutPostWindowRedisplay(f1);
break;
case 0x1B : exit(0);
break; }
}
void key(unsigned char key,int x,int y) {
if ( keyManipulateur(key,x,y) )
glutPostWindowRedisplay(f1);
else
key2(key,x,y);
}
void special(int key,int x,int y) {
if ( specialManipulateur(key,x,y) ) {
glutPostWindowRedisplay(f1); }
}
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 display2() {
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glClearColor(0.0F,0.0F,0.0F,1.0F) ;
glPushMatrix();
float pos = 1.0F;
glColor4fv(couleurJaune());
placeFontCursor(5.0F,-pos*20.0F,0.0F) ;
simpleBitmapOutput(1,REGULAR8x13,"INCIDENT : %6.3f %6.3f %6.3f",i[0],i[1],i[2]) ;
pos += 1.0F;
glColor4fv(couleurMagenta());
placeFontCursor(5.0F,-pos*20.0F,0.0F) ;
simpleBitmapOutput(1,REGULAR8x13,"NORMALE : %6.3f %6.3f %6.3f",n[0],n[1],n[2]) ;
pos += 1.0F;
glColor4fv(couleurRouge());
placeFontCursor(5.0F,-pos*20.0F,0.0F) ;
simpleBitmapOutput(1,REGULAR8x13,"REFLEXION : %6.3f %6.3f %6.3f",r[0],r[1],r[2]) ;
pos += 1.0F;
glColor4fv(couleurJaune());
placeFontCursor(5.0F,-pos*20.0F,0.0F) ;
simpleBitmapOutput(1,REGULAR8x13,"THETA I : %6.3f degres",thetai) ;
pos += 1.0F;
glColor4fv(couleurRouge());
placeFontCursor(5.0F,-pos*20.0F,0.0F) ;
simpleBitmapOutput(1,REGULAR8x13,"THETA R : %6.3f degres",thetai) ;
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char **argv) {
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
glutInitWindowPosition(50,50);
glutInitWindowSize(310,250);
f1 = glutCreateWindow("Schéma réflexion");
myinit();
creationMenuBasique();
setParametresOrthoBasique(-10.0,10.0,-10.0,10.0,-500.0,500.0);
setManipulateurDistance(1.0F);
setManipulateurClavierAngle(25.0F,15.0F,0.0F);
glutReshapeFunc(reshapeOrthoBasique);
glutKeyboardFunc(key);
glutSpecialFunc(specialBasique);
glutDisplayFunc(display);
glutMotionFunc(motionBasique);
glutMouseFunc(sourisBasique);
glutInitWindowSize(360,110);
glutInitWindowPosition(60,340);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
f2 = glutCreateWindow("Valeurs");
creationMenuBasique();
glutDisplayFunc(display2);
glutReshapeFunc(reshape2);
glutKeyboardFunc(key2);
glutSpecialFunc(special);
glutMainLoop();
return(0);
}
RETOUR