/* Copyright (c) Mark J. Kilgard, 1994. */
/**
* (c) Copyright 1993, Silicon Graphics, Inc.
* ALL RIGHTS RESERVED
* Permission to use, copy, modify, and distribute this software for
* any purpose and without fee is hereby granted, provided that the above
* copyright notice appear in all copies and that both the copyright notice
* and this permission notice appear in supporting documentation, and that
* the name of Silicon Graphics, Inc. not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission.
*
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
*
* US Government Users Restricted Rights
* Use, duplication, or disclosure by the Government is subject to
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
* (c)(1)(ii) of the Rights in Technical Data and Computer Software
* clause at DFARS 252.227-7013 and/or in similar or successor
* clauses in the FAR or the DOD or NASA FAR Supplement.
* Unpublished-- rights reserved under the copyright laws of the
* United States. Contractor/manufacturer is Silicon Graphics,
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
*
* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
*/
/*
* fog.c
* This program draws 5 red teapots, each at a different
* z distance from the eye, in different types of fog.
* Pressing the left mouse button chooses between 3 types of
* fog: exponential, exponential squared, and linear.
* In this program, there is a fixed density value, as well
* as fixed start and end values for the linear fog.
*/
#include <GL/glut.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <stdio.h>
#include "ModuleCouleurs.h"
#include "ModuleManipulateur.h"
#include "ModuleMenus.h"
#include "ModuleReshape.h"
static GLint fogMode;
void myinit(void) {
GLfloat position[] = { 0.0,3.0,3.0,0.0 };
GLfloat local_view[] = { 0.0 };
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glLightfv(GL_LIGHT0,GL_POSITION,position);
glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER,local_view);
glFrontFace(GL_CW);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_AUTO_NORMAL);
glEnable(GL_NORMALIZE);
glEnable(GL_FOG);
fogMode = GL_EXP;
glFogi(GL_FOG_MODE,fogMode);
glFogfv(GL_FOG_COLOR,couleurGrisMoyen());
glFogf(GL_FOG_DENSITY,0.35F);
glHint(GL_FOG_HINT,GL_DONT_CARE);
glClearColor(0.5,0.5,0.5,1.0);
}
void renderRedTeapot(GLfloat x,GLfloat y,GLfloat z) {
float mat[4];
glPushMatrix();
glTranslatef(x,y,z);
mat[0] = 0.1745F;
mat[1] = 0.01175F;
mat[2] = 0.01175F;
mat[3] = 1.0F;
glMaterialfv(GL_FRONT,GL_AMBIENT,mat);
mat[0] = 0.61424F;
mat[1] = 0.04136F;
mat[2] = 0.04136F;
glMaterialfv(GL_FRONT,GL_DIFFUSE,mat);
mat[0] = 0.727811F;
mat[1] = 0.626959F;
mat[2] = 0.626959F;
glMaterialfv(GL_FRONT,GL_SPECULAR,mat);
glMaterialf(GL_FRONT,GL_SHININESS,0.6F*128.0F);
glColor4fv(couleurBlanc());
glutSolidTeapot(1.0);
glPopMatrix();
}
void display(void) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
manipulateurSouris();
manipulateurClavier();
renderRedTeapot(-4.0,-0.5,-1.0);
renderRedTeapot(-2.0,-0.5,-2.0);
renderRedTeapot(0.0,-0.5,-3.0);
renderRedTeapot(2.0,-0.5,-4.0);
renderRedTeapot(4.0,-0.5,-5.0);
glPopMatrix();
glFlush();
glutSwapBuffers() ;
}
void souris(int bouton,int etat,int x,int y) {
if ( sourisManipulateur(bouton,etat,x,y) )
glutPostRedisplay();
else
if ( ( bouton == GLUT_LEFT_BUTTON ) && ( etat == GLUT_UP ) ) {
if(fogMode == GL_EXP) {
fogMode = GL_EXP2;
printf("Fog mode is GL_EXP2\n"); }
else
if(fogMode == GL_EXP2) {
fogMode = GL_LINEAR;
printf("Fog mode is GL_LINEAR\n");
glFogf(GL_FOG_START,1.0);
glFogf(GL_FOG_END,5.0); }
else
if(fogMode == GL_LINEAR) {
fogMode = GL_EXP;
printf("Fog mode is GL_EXP\n"); }
glFogi(GL_FOG_MODE,fogMode);
glutPostRedisplay(); }
}
int main(int argc,char **argv) {
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
glutInitWindowSize(450,150);
glutInitWindowPosition(50,50);
glutCreateWindow("Brouillard");
myinit();
creationMenuBasique();
setParametresOrthoBasique(-2.0,2.0,-2.0,2.0,-500.0,500.0);
setManipulateurDistance(1.0F);
glutReshapeFunc(reshapeOrthoBasique);
glutKeyboardFunc(keyBasique);
glutSpecialFunc(specialBasique);
glutMotionFunc(motionBasique);
glutMouseFunc(souris);
glutDisplayFunc(display);
glutMainLoop();
return(0);}
RETOUR