//
Name : OpenGL Teapot
//
Author : Terrence Ma
//
Email : terrence@terrence.com
//
Web :
http://www.terrence.com
//
Date : 10/25/2001
//
Modified : Tutorial sample from Mesa3d.org (
http://www.mesa3d.org
)
/*
* Copyright (c) 1993-1997, 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 * Unpublished-- rights reserved under the copyright laws of the * United States.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(R) is a registered trademark of Silicon Graphics, Inc.
*/
/* * light.c * This program demonstrates the use of the OpenGL lighting * model. A sphere is drawn using a grey material characteristic. * A single light source illuminates the object. */
#include <GL/glut.h>
#include <stdlib.h>
/* Initialize material property, light source, lighting model, * and depth buffer. */
void init(
void)
{
GLfloat mat_specular[] = { 3000.0, 3000.0, 3000.0, 3000.0 }; GLfloat mat_shininess[] = { 100.0 }; GLfloat mat_surface[] = { 1.0, 1.0, 0.0, 0.0 }; GLfloat white_light[] = { 1.0, 1.0, 1.0, 1.0 }; GLfloat light_position0[] = { 1.0, 1.0, 1.0, 0.0 }; GLfloat light_position1[] = { -1.0, -1.0, 1.0, 0.0 }; glClearColor (0.0, 0.0, 0.0, 0.0); glShadeModel (GL_SMOOTH); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); glMaterialfv(GL_FRONT, GL_AMBIENT, mat_surface); glLightfv(GL_LIGHT0, GL_POSITION, light_position0); glLightfv(GL_LIGHT0, GL_DIFFUSE, white_light); glLightfv(GL_LIGHT0, GL_SPECULAR, white_light); glLightfv(GL_LIGHT1, GL_POSITION, light_position1); glLightfv(GL_LIGHT1, GL_DIFFUSE, white_light); glLightfv(GL_LIGHT1, GL_SPECULAR, white_light); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_LIGHT1); glEnable(GL_DEPTH_TEST);}
void display(
void)
{ gluLookAt (6.0, 5.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glutSolidTeapot (0.80); glFlush ();}
void reshape (
int w,
int h)
{ glViewport (0, 0, (GLsizei) w, (GLsizei) h); glMatrixMode (GL_PROJECTION); glLoadIdentity(); if (w <= h) glOrtho (-1.5, 1.5, -1.5*(GLfloat)h/(GLfloat)w, 1.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0); else glOrtho (-1.5*(GLfloat)w/(GLfloat)h, 1.5*(GLfloat)w/(GLfloat)h, -1.5, 1.5, -10.0, 10.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity();}
/* ARGSUSED1 */
void keyboard(unsigned
char key,
int x,
int y)
{ switch (key) { case 27: exit(0); break;
}}
int main(
int argc,
char** argv)
{ glutInit(&argc, argv); glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH); glutInitWindowSize (400, 400); glutInitWindowPosition (100, 100); glutCreateWindow ("OpenGL Teapot"); init (); glutDisplayFunc(display); glutReshapeFunc(reshape); glutKeyboardFunc(keyboard); glutMainLoop(); return 0;}
