/* Auteur: Nicolas JANEY */
/* nicolas.janey@univ-fcomte.fr */
/* Juin 2001 */
/* Schema d'utilisation de la fonction */
/* OpenGL glOrtho */
#include <stdio.h>
#include <math.h>
#include <GL/glut.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include "ModuleCouleurs.h"
#include "ModuleReshape.h"
#include "ModuleManipulateur.h"
#include "ModuleMenus.h"
#include "ModuleFont.h"
#include "ModuleFleche.h"
typedef float vecteur[4];
static float tx = 2.8F;
static float ty = 2.1F;
static float tz = 3.2F;
void myinit(void) {
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glEnable(GL_ALPHA_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glClearColor(1.0F,1.0F,0.9F,1.0F);
}
void axes() {
setFont(GLUT_BITMAP_8_BY_13,CENTER);
glColor4fv(couleurRouge());
flecheEnVolume(1.0F,0.0F,0.0F,0.1F,0.3F,0.02F);
glColor4fv(couleurVert());
flecheEnVolume(0.0F,1.0F,0.0F,0.1F,0.3F,0.02F);
glColor4fv(couleurBleu());
flecheEnVolume(0.0F,0.0F,1.0F,0.1F,0.3F,0.02F);
glPushAttrib(GL_DEPTH_TEST);
glDisable(GL_DEPTH_TEST);
glColor4fv(couleurRougeFonce());
bitmapStringOutput(1.3F,0.0F,0.0F,"x");
glColor4fv(couleurVertFonce());
bitmapStringOutput(0.0F,1.3F,0.0F,"y");
glColor4fv(couleurBleuFonce());
bitmapStringOutput(0.0F,0.0F,1.3F,"z");
glPopAttrib();
}
void display(void) {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
manipulateurSouris();
manipulateurClavier();
glEnable(GL_CULL_FACE);
glColor4fv(couleurRose(0.2F));
glBegin(GL_QUADS);
glVertex3f(tx,ty,-tz);
glVertex3f(tx,-ty,-tz);
glVertex3f(-tx,-ty,-tz);
glVertex3f(-tx,ty,-tz);
glEnd();
glBegin(GL_QUADS);
glVertex3f(tx,ty,tz);
glVertex3f(tx,-ty,tz);
glVertex3f(tx,-ty,-tz);
glVertex3f(tx,ty,-tz);
glEnd();
glBegin(GL_QUADS);
glVertex3f(-tx,ty,-tz);
glVertex3f(-tx,-ty,-tz);
glVertex3f(-tx,-ty,tz);
glVertex3f(-tx,ty,tz);
glEnd();
glBegin(GL_QUADS);
glVertex3f(tx,ty,-tz);
glVertex3f(-tx,ty,-tz);
glVertex3f(-tx,ty,tz);
glVertex3f(tx,ty,tz);
glEnd();
glBegin(GL_QUADS);
glVertex3f(tx,-ty,tz);
glVertex3f(-tx,-ty,tz);
glVertex3f(-tx,-ty,-tz);
glVertex3f(tx,-ty,-tz);
glEnd();
glDisable(GL_CULL_FACE);
glClear(GL_DEPTH_BUFFER_BIT);
glColor4fv(couleurBleuCiel(0.5F));
glBegin(GL_QUADS);
glVertex3f(-tx,ty,tz);
glVertex3f(-tx,-ty,tz);
glVertex3f(tx,-ty,tz);
glVertex3f(tx,ty,tz);
glEnd();
glClear(GL_DEPTH_BUFFER_BIT);
glColor4fv(couleurBleu());
setFont(GLUT_BITMAP_8_BY_13,CENTER);
bitmapStringOutput(0.0F,1.0F,tz,"ecran");
bitmapStringOutput(0.0F,0.0F,5.0F,"axe de visee");
glPushMatrix();
glTranslatef(0.0F,0.0F,6.0F);
flecheEnVolume(0.0F,0.0F,-3.5F,0.1F,0.3F,0.03F);
glPopMatrix();
glColor4fv(couleurRouge());
placeFontCursor(tx,0.0F,0.0F) ;
bitmapStringOutput("volume de");
deplacementCursor(0,13,0);
bitmapStringOutput("visualisation");
glColor4fv(couleurNoir());
setFont(GLUT_BITMAP_9_BY_15,CENTER);
bitmapStringOutput(-tx-0.5F,0.0F,tz,"g");
bitmapStringOutput(tx+0.5F,0.0F,tz,"d");
bitmapStringOutput(0.0F,-ty-0.5F,tz,"b");
bitmapStringOutput(0.0F,ty+0.5F,tz,"h");
bitmapStringOutput(tx+2.0F,-ty-0.3F,tz,"-cmin");
bitmapStringOutput(tx+2.0F,-ty-0.3F,-tz,"-cmax");
glColor4fv(couleurRouge());
glLineWidth(2.0);
glBegin(GL_LINE_LOOP);
glVertex3f(tx,ty,-tz);
glVertex3f(tx,-ty,-tz);
glVertex3f(-tx,-ty,-tz);
glVertex3f(-tx,ty,-tz);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f(tx,ty,tz);
glVertex3f(tx,-ty,tz);
glVertex3f(-tx,-ty,tz);
glVertex3f(-tx,ty,tz);
glEnd();
glBegin(GL_LINES);
glVertex3f(tx,ty,-tz);
glVertex3f(tx,ty,tz);
glVertex3f(tx,-ty,-tz);
glVertex3f(tx,-ty,tz);
glVertex3f(-tx,-ty,-tz);
glVertex3f(-tx,-ty,tz);
glVertex3f(-tx,ty,-tz);
glVertex3f(-tx,ty,tz);
glEnd();
glLineWidth(1.0);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1,0x5555);
glBegin(GL_LINES);
glVertex3f(tx,ty,-tz);
glVertex3f(tx,ty,-tz-10000.0F);
glVertex3f(tx,-ty,-tz);
glVertex3f(tx,-ty,-tz-10000.0F);
glVertex3f(-tx,-ty,-tz);
glVertex3f(-tx,-ty,-tz-10000.0F);
glVertex3f(-tx,ty,-tz);
glVertex3f(-tx,ty,-tz-10000.0F);
glVertex3f(tx,ty,tz);
glVertex3f(tx,ty,tz+10000.0F);
glVertex3f(tx,-ty,tz);
glVertex3f(tx,-ty,tz+10000.0F);
glVertex3f(-tx,-ty,tz);
glVertex3f(-tx,-ty,tz+10000.0F);
glVertex3f(-tx,ty,tz);
glVertex3f(-tx,ty,tz+10000.0F);
glColor4fv(couleurBleu());
glVertex3f(0.0F,0.0F,-10000.0F);
glVertex3f(0.0F,0.0F,10000.0F);
glColor4fv(couleurNoir());
glVertex3f(tx+1.2F,-ty,tz);
glVertex3f(tx+1.8F,-ty,tz);
glVertex3f(tx+1.5F,-ty-0.3F,tz);
glVertex3f(tx+1.5F,-ty+0.3F,tz);
glVertex3f(tx+1.2F,-ty,-tz);
glVertex3f(tx+1.8F,-ty,-tz);
glVertex3f(tx+1.5F,-ty-0.3F,-tz);
glVertex3f(tx+1.5F,-ty+0.3F,-tz);
glVertex3f(tx+1.5F,-ty,-10000.0F);
glVertex3f(tx+1.5F,-ty,10000.0F);
glEnd();
glDisable(GL_LINE_STIPPLE);
glPushMatrix();
glTranslatef(1.0F,1.0F,-1.0F);
axes();
glPopMatrix();
glPopMatrix();
glFlush();
glutSwapBuffers();
int error = glGetError();
if ( error )
printf("%d\n",error);
}
void key(unsigned char key,int x,int y) {
if ( keyManipulateur(key,x,y) )
glutPostRedisplay();
else
switch ( key ) {
case 'e' : tx += 0.1F;
glutPostRedisplay();
break;
case 'E' : tx -= 0.1F;
if ( tx < 0.1F )
tx = 0.1F;
glutPostRedisplay();
break;
case 'r' : ty += 0.1F;
glutPostRedisplay();
break;
case 'R' : ty -= 0.1F;
if ( ty < 0.1F )
ty = 0.1F;
glutPostRedisplay();
break;
case 't' : tz += 0.1F;
glutPostRedisplay();
break;
case 'T' : tz -= 0.1F;
if ( tz < 0.1F )
tz = 0.1F;
glutPostRedisplay();
break; }
}
int main(int argc,char **argv) {
//glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGBA|GLUT_DEPTH);
glutInitWindowPosition(10,10);
glutInitWindowSize(400,250);
glutCreateWindow("Schema: Fonction OpenGL glOrtho");
myinit();
creationMenuBasique();
setParametresOrthoBasique(-4.5,4.5,-4.5,4.5,-100.0,100.0);
setManipulateurDistance(1.0F);
setManipulateurClavierAngle(10.0F,-68.0F,0.0F) ;
glutReshapeFunc(reshapeOrthoBasique);
glutKeyboardFunc(key);
glutSpecialFunc(specialBasique);
glutMotionFunc(motionBasique);
glutMouseFunc(sourisBasique);
glutDisplayFunc(display);
glutMainLoop();
return(0);
}
/* ************************************************** */
RETOUR