/* Auteur: Nicolas JANEY      */
/* Avril 2001                 */
/* La visualisation en OpenGL */

#include "windows.h"

#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glaux.h>

#include <stdio.h>
#include <stdlib.h>

static float rotx = 0.0f ;
static float roty = 0.0f ;
static float rotz = 0.0f ;

void CALLBACK display(void) {
  glClear(GL_COLOR_BUFFER_BIT);
  glColor3f(1.0,1.0,1.0);
  glLoadIdentity();                /*(1)*/
  glTranslatef(0.0,0.0,-5.0);      /*(1)*/
  glRotatef(rotx,1.0f,0.0f,0.0f);  /*(1)*/
  glRotatef(roty,0.0f,1.0f,0.0f);  /*(1)*/
  glRotatef(rotz,0.0f,0.0f,1.0f);  /*(1)*/
  glScalef(1.0,2.0,3.0);           /*(2)*/
  auxWireCube(1.0);                /*(2)*/
  glFlush();
}

void myinit(void) {
  glShadeModel(GL_FLAT);
}

void CALLBACK myReshape(int w, int h) {
  glMatrixMode(GL_PROJECTION);     /*(3)*/
  glLoadIdentity();                /*(3)*/
  glFrustum(-1.,1.,-1.,1.,1.5,20.);/*(3)*/
  glMatrixMode(GL_MODELVIEW);      /*(2)*/
  glViewport(0,0,w,h);             /*(4)*/
}

void CALLBACK auxX(void) {
  rotx += 2 ;
}

void CALLBACK auxx(void) {
  rotx -= 2 ;
}

void CALLBACK auxY(void) {
  roty += 2 ;
}

void CALLBACK auxy(void) {
  roty -= 2 ;
}

void CALLBACK auxZ(void) {
  rotz += 2 ;
}

void CALLBACK auxz(void) {
  rotz -= 2 ;
}

void main() {
  auxInitDisplayMode(AUX_SINGLE|AUX_RGB);
  auxInitPosition(0,0,200,200);
  auxInitWindow("Visualisation");
  myinit();
  auxKeyFunc(AUX_X,auxX) ;
  auxKeyFunc(AUX_x,auxx) ;
  auxKeyFunc(AUX_Y,auxY) ;
  auxKeyFunc(AUX_y,auxy) ;
  auxKeyFunc(AUX_Z,auxZ) ;
  auxKeyFunc(AUX_z,auxz) ;
  auxReshapeFunc(myReshape);
  auxMainLoop(display);
}