: my hobby is programing graphics in c language. i am fully familiar with c in dos mode. recently i started to work on linux and i like it. but i could not run any "graphics program in linux"<br>
: with or without using graphics.h. other than using ascii characters on screen mode..<br>
: could you please brief up how graphics programing in c for linux is done.<br>
: <br>
<br>
If you like to play with graphics I would suggest you to<br>
start with OpenGL. It is real fun to program and there are plenty of<br>
examples out there for free. But first you have to figure out whether you <br>
have Mesa lib or not. Check in /usr/lib/ there must be Mesa-x.x where x.x is<br>
a version. <br>
here is files you may want to get from net:<br>
Mesa-demos-3.0-2.i386.rpm<br>
Mesa-devel-3.0-2.i386.rpm<br>
Mesa-glut-3.0-2.i386.rpm<br>
Mesa-glut-devel-3.0-2.i386.rpm<br>
--------------------------------------<br>
For you to start here is a small example: <br>
Save it as x.c or x.cpp where x is name you like and than compile by the following command:<br>
For x.c use<br>
cc x.c -lglut -lMesaGLU -lMesaGL -L/usr/X11/lib -L/usr/X11R6/lib -lX11 -lXext -lXmu -lXt –lXi<br>
<br>
For x.cpp use<br>
g++ x.cpp -lglut -lMesaGLU -lMesaGL -L/usr/X11/lib -L/usr/X11R6/lib -lX11 -lXext -lXmu -lXt -lXi<br>
<br>
Later you have to decide which X lib you have to use during compilation but now I show you most common lib. <br>
<br>
<br>
----------------------------------------------<br>
<br>
<br>
/*<br>
* Copyright (c) 1993-1997, Silicon Graphics, Inc.<br>
* ALL RIGHTS RESERVED <br>
* Permission to use, copy, modify, and distribute this software for <br>
* any purpose and without fee is hereby granted, provided that the above<br>
* copyright notice appear in all copies and that both the copyright notice<br>
* and this permission notice appear in supporting documentation, and that <br>
* the name of Silicon Graphics, Inc. not be used in advertising<br>
* or publicity pertaining to distribution of the software without specific,<br>
* written prior permission. <br>
*<br>
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"<br>
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,<br>
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR<br>
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON<br>
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,<br>
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY<br>
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,<br>
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF<br>
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN<br>
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON<br>
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE<br>
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.<br>
* <br>
* US Government Users Restricted Rights <br>
* Use, duplication, or disclosure by the Government is subject to<br>
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph<br>
* (c)(1)(ii) of the Rights in Technical Data and Computer Software<br>
* clause at DFARS 252.227-7013 and/or in similar or successor<br>
* clauses in the FAR or the DOD or NASA FAR Supplement.<br>
* Unpublished-- rights reserved under the copyright laws of the<br>
* United States. Contractor/manufacturer is Silicon Graphics,<br>
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.<br>
*<br>
* OpenGL(R) is a registered trademark of Silicon Graphics, Inc.<br>
*/<br>
<br>
/*<br>
* cube.c<br>
* This program demonstrates a single modeling transformation,<br>
* glScalef() and a single viewing transformation, gluLookAt().<br>
* A wireframe cube is rendered.<br>
*/<br>
#include <GL/glut.h><br>
#include <stdlib.h><br>
<br>
void init(void) <br>
{<br>
glClearColor (0.0, 0.0, 0.0, 0.0);<br>
glShadeModel (GL_FLAT);<br>
}<br>
<br>
void display(void)<br>
{<br>
glClear (GL_COLOR_BUFFER_BIT);<br>
glColor3f (1.0, 1.0, 1.0);<br>
glLoadIdentity (); /* clear the matrix */<br>
/* viewing transformation */<br>
gluLookAt (0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);<br>
glScalef (1.0, 2.0, 1.0); /* modeling transformation */ <br>
glutWireCube (1.0);<br>
glFlush ();<br>
}<br>
<br>
void reshape (int w, int h)<br>
{<br>
glViewport (0, 0, (GLsizei) w, (GLsizei) h); <br>
glMatrixMode (GL_PROJECTION);<br>
glLoadIdentity ();<br>
glFrustum (-1.0, 1.0, -1.0, 1.0, 1.5, 20.0);<br>
glMatrixMode (GL_MODELVIEW);<br>
}<br>
<br>
/* ARGSUSED1 */<br>
void keyboard(unsigned char key, int x, int y)<br>
{<br>
switch (key) {<br>
case 27:<br>
exit(0);<br>
break;<br>
}<br>
}<br>
<br>
int main(int argc, char** argv)<br>
{<br>
glutInit(&argc, argv);<br>
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);<br>
glutInitWindowSize (500, 500); <br>
glutInitWindowPosition (100, 100);<br>
glutCreateWindow (argv[0]);<br>
init ();<br>
glutDisplayFunc(display); <br>
glutReshapeFunc(reshape);<br>
glutKeyboardFunc(keyboard);<br>
glutMainLoop();<br>
return 0;<br>
}<br>
---------------------------------------------<br>
<br>
Have fun!<br>
PS: if you wish e-mail me and I will post you those libs.<br>
