home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Amiga Format CD 52
/
Amiga Format AFCD52 (Issue 136, May 2000).iso
/
-serious-
/
programming
/
other
/
mesa
/
mesa-aux
/
book.aux
/
antipoly.c
< prev
next >
Wrap
C/C++ Source or Header
|
2000-02-23
|
5KB
|
158 lines
/*
* (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* Unpublished-- rights reserved under the copyright laws of the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 <GL/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;
}