L'exécutable
- s ou S pour sauvegarder l'image dans un fichier RAW
Le source: Sauvegarde.cpp
#include <windows.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glaux.h>
#include <stdio.h>
static int ww ;
static int hh ;
void myinit(void) {
GLfloat specular[] = { 1.0,1.0,1.0,1.0 };
GLfloat shinines[] = { 50.0 };
GLfloat l_pos[] = { 1.0,1.0,1.0,0.0 };
glClearColor(0.5,0.5,1.0,1.0) ;
glMaterialfv(GL_FRONT,GL_SPECULAR,specular);
glMaterialfv(GL_FRONT,GL_SHININESS,shinines);
glLightfv(GL_LIGHT0,GL_POSITION,l_pos);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
}
void CALLBACK display(void) {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
auxSolidSphere(1.0);
glFlush();
}
void CALLBACK myReshape(int w,int h) {
glViewport(0,0,w,h);
ww = w ;
hh = h ;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if (w <= h)
glOrtho(-1.5,1.5,-1.5*(float)h/(float)w,1.5*(float)h/(float)w,-10.,10.);
else
glOrtho(-1.5*(float)w/(float)h,1.5*(float)w/(float)h,-1.5,1.5,-10.,10.);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
void sauve(char *nom,int px,int py,int dx,int dy) {
GLubyte *image ;
FILE *num ;
int y,x ;
image =(GLubyte *) calloc(dx*dy*3,sizeof(GLubyte));
glReadPixels(px,py,dx,dy,GL_RGB,GL_UNSIGNED_BYTE,image);
num = fopen(nom,"wb") ;
if ( num ) {
for ( y = dy-1 ; y >= 0 ; y-- ) {
for ( x = 0 ; x < dx ; x++ ) {
fwrite((void *) &image[(y*dx+x)*3],sizeof(GLubyte),3,num) ; } }
fclose(num) ; }
free(image) ;
}
void CALLBACK keyS(void) {
sauve("image.raw",0,0,ww,hh) ;
}
void main(void) {
auxInitDisplayMode(AUX_SINGLE|AUX_RGB|AUX_DEPTH);
auxInitPosition(0,0,256,256);
auxInitWindow("Sphère blanche");
myinit();
auxKeyFunc(AUX_S,keyS) ;
auxKeyFunc(AUX_s,keyS) ;
auxReshapeFunc(myReshape);
auxMainLoop(display);
}
RETOUR