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-rw-r--r--progs/redbook/colormat.c153
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diff --git a/progs/redbook/colormat.c b/progs/redbook/colormat.c
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--- a/progs/redbook/colormat.c
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-/*
- * 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- * Unpublished-- rights reserved under the copyright laws of the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.
- */
-
-/*
- * colormat.c
- * After initialization, the program will be in
- * ColorMaterial mode. Interaction: pressing the
- * mouse buttons will change the diffuse reflection values.
- */
-#include <GL/glut.h>
-#include <stdlib.h>
-
-GLfloat diffuseMaterial[4] = { 0.5, 0.5, 0.5, 1.0 };
-
-/* Initialize material property, light source, lighting model,
- * and depth buffer.
- */
-static void init(void)
-{
- GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
-
- glClearColor (0.0, 0.0, 0.0, 0.0);
- glShadeModel (GL_SMOOTH);
- glEnable(GL_DEPTH_TEST);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, diffuseMaterial);
- glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
- glMaterialf(GL_FRONT, GL_SHININESS, 25.0);
- glLightfv(GL_LIGHT0, GL_POSITION, light_position);
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
-
- glColorMaterial(GL_FRONT, GL_DIFFUSE);
- glEnable(GL_COLOR_MATERIAL);
-}
-
-static void display(void)
-{
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glutSolidSphere(1.0, 20, 16);
- glFlush ();
-}
-
-static 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();
-}
-
-/* ARGSUSED2 */
-static void mouse(int button, int state, int x, int y)
-{
- switch (button) {
- case GLUT_LEFT_BUTTON:
- if (state == GLUT_DOWN) {
- diffuseMaterial[0] += 0.1;
- if (diffuseMaterial[0] > 1.0)
- diffuseMaterial[0] = 0.0;
- glColor4fv(diffuseMaterial);
- glutPostRedisplay();
- }
- break;
- case GLUT_MIDDLE_BUTTON:
- if (state == GLUT_DOWN) {
- diffuseMaterial[1] += 0.1;
- if (diffuseMaterial[1] > 1.0)
- diffuseMaterial[1] = 0.0;
- glColor4fv(diffuseMaterial);
- glutPostRedisplay();
- }
- break;
- case GLUT_RIGHT_BUTTON:
- if (state == GLUT_DOWN) {
- diffuseMaterial[2] += 0.1;
- if (diffuseMaterial[2] > 1.0)
- diffuseMaterial[2] = 0.0;
- glColor4fv(diffuseMaterial);
- glutPostRedisplay();
- }
- break;
- default:
- break;
- }
-}
-
-/* ARGSUSED1 */
-static 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 (500, 500);
- glutInitWindowPosition (100, 100);
- glutCreateWindow (argv[0]);
- init ();
- glutDisplayFunc(display);
- glutReshapeFunc(reshape);
- glutMouseFunc(mouse);
- glutKeyboardFunc(keyboard);
- glutMainLoop();
- return 0;
-}