145 lines
4.9 KiB
C
145 lines
4.9 KiB
C
/*
|
|
* (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* Unpublished-- rights reserved under the copyright laws of the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.
|
|
*/
|
|
/*
|
|
* scene.c
|
|
* This program demonstrates the use of the GL lighting model.
|
|
* Objects are drawn using a grey material characteristic.
|
|
* A single light source illuminates the objects.
|
|
*/
|
|
#include <windows.h>
|
|
#include <GL/gl.h>
|
|
#include <GL/glu.h>
|
|
#include "glaux.h"
|
|
|
|
/* Initialize material property and light source.
|
|
*/
|
|
void myinit (void)
|
|
{
|
|
GLfloat light_ambient[] = { 0.0, 0.0, 0.0, 1.0 };
|
|
|
|
GLfloat rlight_diffuse[] = { 0.9, 0.0, 0.0, 1.0 };
|
|
GLfloat rlight_specular[] = { 0.9, 0.0, 0.0, 1.0 };
|
|
GLfloat glight_diffuse[] = { 0.0, 0.7, 0.0, 1.0 };
|
|
GLfloat glight_specular[] = { 0.0, 0.7, 0.0, 1.0 };
|
|
GLfloat blight_diffuse[] = { 0.0, 0.0, 0.5, 1.0 };
|
|
GLfloat blight_specular[] = { 0.0, 0.0, 0.5, 1.0 };
|
|
|
|
/* light_position is NOT default value */
|
|
GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
|
|
|
|
glLightfv (GL_LIGHT0, GL_AMBIENT, light_ambient);
|
|
glLightfv (GL_LIGHT0, GL_DIFFUSE, rlight_diffuse);
|
|
glLightfv (GL_LIGHT0, GL_SPECULAR, rlight_specular);
|
|
glLightfv (GL_LIGHT0, GL_POSITION, light_position);
|
|
|
|
glLightfv (GL_LIGHT1, GL_AMBIENT, light_ambient);
|
|
glLightfv (GL_LIGHT1, GL_DIFFUSE, glight_diffuse);
|
|
glLightfv (GL_LIGHT1, GL_SPECULAR, glight_specular);
|
|
glLightfv (GL_LIGHT1, GL_POSITION, light_position);
|
|
|
|
glLightfv (GL_LIGHT2, GL_AMBIENT, light_ambient);
|
|
glLightfv (GL_LIGHT2, GL_DIFFUSE, blight_diffuse);
|
|
glLightfv (GL_LIGHT2, GL_SPECULAR, blight_specular);
|
|
glLightfv (GL_LIGHT2, GL_POSITION, light_position);
|
|
|
|
glEnable (GL_LIGHTING);
|
|
glDepthFunc(GL_LESS);
|
|
glEnable(GL_DEPTH_TEST);
|
|
}
|
|
|
|
void display (void)
|
|
{
|
|
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
glPushMatrix ();
|
|
glRotatef (20.0, 1.0, 0.0, 0.0);
|
|
|
|
glEnable (GL_LIGHT0);
|
|
glPushMatrix ();
|
|
glTranslatef (-0.75, 0.5, 0.0);
|
|
glRotatef (90.0, 1.0, 0.0, 0.0);
|
|
auxSolidTorus (0.275, 0.85);
|
|
glPopMatrix ();
|
|
|
|
glDisable (GL_LIGHT0);
|
|
glEnable (GL_LIGHT1);
|
|
glPushMatrix ();
|
|
glTranslatef (-0.75, -0.5, 0.0);
|
|
glRotatef (270.0, 1.0, 0.0, 0.0);
|
|
auxSolidCone (1.0, 2.0);
|
|
glPopMatrix ();
|
|
|
|
glDisable (GL_LIGHT1);
|
|
glEnable (GL_LIGHT2);
|
|
glPushMatrix ();
|
|
glTranslatef (0.75, 0.0, -1.0);
|
|
auxSolidSphere (1.0);
|
|
glPopMatrix ();
|
|
glDisable (GL_LIGHT2);
|
|
|
|
glPopMatrix ();
|
|
glFlush ();
|
|
}
|
|
|
|
void myReshape (GLsizei w, GLsizei h)
|
|
{
|
|
glViewport (0, 0, w, h);
|
|
glMatrixMode (GL_PROJECTION);
|
|
glLoadIdentity ();
|
|
if (w <= h)
|
|
glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w,
|
|
2.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
|
|
else
|
|
glOrtho (-2.5*(GLfloat)w/(GLfloat)h,
|
|
2.5*(GLfloat)w/(GLfloat)h, -2.5, 2.5, -10.0, 10.0);
|
|
glMatrixMode (GL_MODELVIEW);
|
|
}
|
|
|
|
/* Main Loop
|
|
* Open window with initial window size, title bar,
|
|
* RGBA display mode, and handle input events.
|
|
*/
|
|
int main(int argc, char** argv)
|
|
{
|
|
auxInitDisplayMode (AUX_SINGLE | AUX_RGB | AUX_DEPTH16);
|
|
auxInitPosition (100, 50, 500, 500);
|
|
auxInitWindow (argv[0]);
|
|
myinit ();
|
|
auxReshapeFunc (myReshape);
|
|
auxMainLoop (display);
|
|
}
|