home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
viscobv6.zip
/
vac22os2
/
ibmcobol
/
samples
/
toolkit
/
opengl
/
auxdemo
/
antipt.c
< prev
next >
Wrap
C/C++ Source or Header
|
1996-11-19
|
4KB
|
104 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* Unpublished-- rights reserved under the copyright laws of the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.
*/
/*
* antipoint.c
* The program draws antialiased points, in RGBA mode.
*/
#include <GL/gl.h>
#include <GL/glu.h>
#include "aux.h"
/* Initialize point anti-aliasing for RGBA mode, including alpha
* blending, hint, and point size. These points are 3.0 pixels big.
*/
void myinit(void)
{
glEnable (GL_POINT_SMOOTH);
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glHint (GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
glPointSize (3.0);
glClearColor(0.0, 0.0, 0.0, 0.0);
}
/* display() draws several points.
*/
void display(void)
{
int i;
glClear (GL_COLOR_BUFFER_BIT);
glColor4f (1.0, 1.0, 1.0, 1.0);
glBegin (GL_POINTS);
for (i = 1; i < 10; i++) {
glVertex2f ((GLfloat) i * 10.0, (GLfloat) i * 10.0);
}
glEnd ();
glFlush();
}
void myReshape(int w, int h)
{
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if (w < h)
glOrtho (0.0, 100.0,
0.0, 100.0*(GLfloat) h/(GLfloat) w, -1.0, 1.0);
else
glOrtho (0.0, 100.0*(GLfloat) w/(GLfloat) h,
0.0, 100.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity ();
}
/* 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);
auxInitPosition (0, 0, 100, 100);
auxInitWindow (argv[0]);
myinit();
auxReshapeFunc (myReshape);
auxMainLoop(display);
}