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lines.c
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C/C++ Source or Header
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1999-06-25
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146 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* Unpublished-- rights reserved under the copyright laws of the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.
*/
/*
* lines.c
* This program demonstrates different line stipples and widths.
*/
#include <GL/gl.h>
#include <GL/glu.h>
#include <stdlib.h>
#include <GL/glaux.h>
#define drawOneLine(x1,y1,x2,y2) glBegin(GL_LINES); \
glVertex2f ((x1),(y1)); glVertex2f ((x2),(y2)); glEnd();
void myinit(void)
{
/*
* background to be cleared to black
*/
glClearColor(0.0, 0.0, 0.0, 0.0);
glShadeModel(GL_FLAT);
}
void display(void)
{
int i;
glClear(GL_COLOR_BUFFER_BIT);
/*
* draw all lines in white
*/
glColor3f(1.0, 1.0, 1.0);
/*
* in 1st row, 3 lines drawn, each with a different stipple
*/
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0x0101); /*
* dotted
*/
drawOneLine(50.0, 125.0, 150.0, 125.0);
glLineStipple(1, 0x00FF); /*
* dashed
*/
drawOneLine(150.0, 125.0, 250.0, 125.0);
glLineStipple(1, 0x1C47); /*
* dash/dot/dash
*/
drawOneLine(250.0, 125.0, 350.0, 125.0);
/*
* in 2nd row, 3 wide lines drawn, each with different stipple
*/
glLineWidth(5.0);
glLineStipple(1, 0x0101);
drawOneLine(50.0, 100.0, 150.0, 100.0);
glLineStipple(1, 0x00FF);
drawOneLine(150.0, 100.0, 250.0, 100.0);
glLineStipple(1, 0x1C47);
drawOneLine(250.0, 100.0, 350.0, 100.0);
glLineWidth(1.0);
/*
* in 3rd row, 6 lines drawn, with dash/dot/dash stipple,
*/
/*
* as part of a single connect line strip
*/
glLineStipple(1, 0x1C47);
glBegin(GL_LINE_STRIP);
for (i = 0; i < 7; i++)
glVertex2f(50.0 + ((GLfloat) i * 50.0), 75.0);
glEnd();
/*
* in 4th row, 6 independent lines drawn,
*/
/*
* with dash/dot/dash stipple
*/
for (i = 0; i < 6; i++) {
drawOneLine(50.0 + ((GLfloat) i * 50.0),
50.0, 50.0 + ((GLfloat) (i + 1) * 50.0), 50.0);
}
/*
* in 5th row, 1 line drawn, with dash/dot/dash stipple
*/
/*
* and repeat factor of 5
*/
glLineStipple(5, 0x1C47);
drawOneLine(50.0, 25.0, 350.0, 25.0);
glFlush();
}
/*
* 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, 400, 150);
if (!auxInitWindow(argv[0]))
auxQuit();
myinit();
auxMainLoop(display);
return 0;
}