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- /*
- * (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- * Unpublished-- rights reserved under the copyright laws of the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.
- */
- /*
- * antipoly.c
- * This program draws filled polygons with antialiased
- * edges. The special GL_SRC_ALPHA_SATURATE blending
- * function is used.
- * Pressing the left mouse button turns the antialiasing
- * on and off.
- */
- #include <GL/gl.h>
- #include <GL/glu.h>
- #include <stdlib.h>
- #include "glaux.h"
-
- GLboolean polySmooth;
-
- void myinit(void)
- {
- GLfloat mat_ambient[] = { 0.0, 0.0, 0.0, 1.00 };
- GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.00 };
- GLfloat mat_shininess[] = { 15.0 };
-
- glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
- glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
- glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
-
- glEnable (GL_LIGHTING);
- glEnable (GL_LIGHT0);
- glEnable (GL_BLEND);
- glCullFace (GL_BACK);
- glEnable (GL_CULL_FACE);
- glEnable (GL_POLYGON_SMOOTH);
- polySmooth = GL_TRUE;
-
- glClearColor (0.0, 0.0, 0.0, 0.0);
- }
-
- void toggleSmooth (AUX_EVENTREC *event)
- {
- if (polySmooth) {
- polySmooth = GL_FALSE;
- glDisable (GL_BLEND);
- glDisable (GL_POLYGON_SMOOTH);
- glEnable (GL_DEPTH_TEST);
- }
- else {
- polySmooth = GL_TRUE;
- glEnable (GL_BLEND);
- glEnable (GL_POLYGON_SMOOTH);
- glDisable (GL_DEPTH_TEST);
- }
- }
-
- /* Note: polygons must be drawn from back to front
- * for proper blending.
- */
- void display(void)
- {
- GLfloat position[] = { 0.0, 0.0, 1.0, 0.0 };
- GLfloat mat_cube1[] = { 0.75, 0.75, 0.0, 1.0 };
- GLfloat mat_cube2[] = { 0.0, 0.75, 0.75, 1.0 };
-
- if (polySmooth)
- glClear (GL_COLOR_BUFFER_BIT);
- else
- glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glPushMatrix ();
- glTranslatef (0.0, 0.0, -8.0);
- glLightfv (GL_LIGHT0, GL_POSITION, position);
-
- glBlendFunc (GL_SRC_ALPHA_SATURATE, GL_ONE);
-
- glPushMatrix ();
- glRotatef (30.0, 1.0, 0.0, 0.0);
- glRotatef (60.0, 0.0, 1.0, 0.0);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_cube1);
- auxSolidCube (1.0);
- glPopMatrix ();
-
- glTranslatef (0.0, 0.0, -2.0);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_cube2);
- glRotatef (30.0, 0.0, 1.0, 0.0);
- glRotatef (60.0, 1.0, 0.0, 0.0);
- auxSolidCube (1.0);
-
- glPopMatrix ();
-
- glFlush ();
- }
-
- void myReshape(int w, int h)
- {
- glViewport(0, 0, w, h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(30.0, (GLfloat) w/(GLfloat) h, 1.0, 20.0);
- glMatrixMode(GL_MODELVIEW);
- }
-
- /* Main Loop
- */
- int main(int argc, char** argv)
- {
- auxInitDisplayMode (AUX_SINGLE | AUX_RGB | AUX_ALPHA | AUX_DEPTH);
- auxInitPosition (0, 0, 200, 200);
- if (!auxInitWindow (argv[0]))
- auxQuit();
- auxMouseFunc (AUX_LEFTBUTTON, AUX_MOUSEDOWN, toggleSmooth);
- myinit();
- auxReshapeFunc (myReshape);
- auxMainLoop(display);
- return 0;
- }
-
-
-
-