Le source : PlacageTexture.cpp
/* Auteur: Nicolas JANEY */
/* nicolas.janey@univ-fcomte.fr */
/* Decembre 2005 */
/* Une facette texture avec un damier */
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <GL/glut.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include "ModuleManipulateur.h"
#include "ModuleMenus.h"
#include "ModuleReshape.h"
static GLbyte *image1 ;
static GLbyte *image2 ;
static int w2 ;
static int h2 ;
static int mode = 0;
static int deff = 0;
static int f1;
static int f2;
GLbyte *makeImage1() {
GLbyte *img =(GLbyte *) calloc(2*2*3,sizeof(GLbyte));
img[2] = img[3] = img[4] = img[6] = img[10] =(GLbyte) 0xFF;
return(img);
}
GLbyte *makeImage2() {
GLbyte *img =(GLbyte *) calloc(8*8*3,sizeof(GLbyte));
for ( int l = 0 ; l < 8 ; l++ )
for ( int c = 0 ; c < 8 ; c++ )
if ( (l+c)%2 == 1 )
img[(l*8+c)*3] = img[(l*8+c)*3+1] = img[(l*8+c)*3+2] =(GLbyte) 0xFF;
return(img);
}
void display2() {
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glPushMatrix();
glRasterPos2i(w2/2-32,h2/2+32);
if ( mode ) {
glPixelZoom(8.0F,-8.0F);
glDrawPixels(8,8,GL_RGB,GL_UNSIGNED_BYTE,image2); }
else {
glPixelZoom(32.0F,-32.0F);
glDrawPixels(2,2,GL_RGB,GL_UNSIGNED_BYTE,image1); }
glPopMatrix();
glutSwapBuffers();
}
void reshape2(int w,int h) {
w2 = w;
h2 = h;
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0,w,0,h,-1.0,1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
void display1() {
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
if ( mode )
glTexImage2D(GL_TEXTURE_2D,0,3,8,8,0,GL_RGB,GL_UNSIGNED_BYTE,image2);
else
glTexImage2D(GL_TEXTURE_2D,0,3,2,2,0,GL_RGB,GL_UNSIGNED_BYTE,image1);
glPushMatrix();
manipulateurSouris();
manipulateurClavier();
glBegin(GL_QUADS);
glTexCoord2f(0.0F,0.99F);
glVertex2f(-1.0F,-0.75F);
glTexCoord2f(0.0F,0.0F);
glVertex2f(-1.0F,0.75F);
glTexCoord2f(( deff == 0 ) ? 1.333333F : 1.0F,0.0F);
glVertex2f(1.0F,0.75F);
glTexCoord2f(( deff == 0 ) ? 1.333333F : 1.0F,0.99F);
glVertex2f(1.0F,-0.75F);
glEnd();
glPopMatrix();
glutSwapBuffers();
}
void postRedisplay(void) {
glutPostWindowRedisplay(f1);
glutPostWindowRedisplay(f2);
}
void key(unsigned char key,int x,int y) {
if ( keyManipulateur(key,x,y) )
postRedisplay();
else
switch ( key ) {
case ' ' : deff = !deff;
postRedisplay();
break;
case 0x0D : mode = !mode;
postRedisplay();
break; }
}
void myInit1() {
image1 = makeImage1();
image2 = makeImage2();
glClearColor(0.75F,0.75F,0.75F,1.0F);
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_AUTO_NORMAL);
glEnable(GL_NORMALIZE);
}
void myInit2() {
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
}
int main(int argc,char **argv) {
glutInit(&argc,argv);
{ glutInitWindowSize(300,250);
glutInitWindowPosition(50,50);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
f1 = glutCreateWindow("Rectangle texture");
creationMenuBasique();
myInit1();
setParametresOrthoBasique(-1.5,1.5,-1.5,1.5,-50.0,50.0);
setManipulateurDistance(10.0F);
glutReshapeFunc(reshapeOrthoBasique);
glutDisplayFunc(display1);
glutKeyboardFunc(key);
glutSpecialFunc(specialBasique);
glutMotionFunc(motionBasique);
glutMouseFunc(sourisBasique); }
{ glutInitWindowPosition(450,100);
glutInitWindowSize(150,150);
f2 = glutCreateWindow("Texture");
creationMenuBasique();
myInit2();
glutKeyboardFunc(key);
glutSpecialFunc(specialBasique);
glutDisplayFunc(display2);
glutReshapeFunc(reshape2); }
glutMainLoop();
return(0);
}
RETOUR