139 lines
4.5 KiB
C
139 lines
4.5 KiB
C
/*
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* Copyright (c) 1993-1997, Silicon Graphics, Inc.
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* ALL RIGHTS RESERVED
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* Permission to use, copy, modify, and distribute this software for
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* any purpose and without fee is hereby granted, provided that the above
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* copyright notice appear in all copies and that both the copyright notice
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* and this permission notice appear in supporting documentation, and that
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* the name of Silicon Graphics, Inc. not be used in advertising
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* or publicity pertaining to distribution of the software without specific,
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* written prior permission.
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*
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* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
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* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
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* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
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* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
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* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
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* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
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* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
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* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* US Government Users Restricted Rights
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
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* (c)(1)(ii) of the Rights in Technical Data and Computer Software
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* clause at DFARS 252.227-7013 and/or in similar or successor
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* clauses in the FAR or the DOD or NASA FAR Supplement.
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* Unpublished-- rights reserved under the copyright laws of the
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* United States. Contractor/manufacturer is Silicon Graphics,
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* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
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*
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* OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
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*/
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/*
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* lines.c
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* This program demonstrates geometric primitives and
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* their attributes.
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*/
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#include <GL/glut.h>
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#include <stdlib.h>
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#define drawOneLine(x1,y1,x2,y2) glBegin(GL_LINES); \
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glVertex2f ((x1),(y1)); glVertex2f ((x2),(y2)); glEnd();
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void init(void)
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{
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glClearColor (0.0, 0.0, 0.0, 0.0);
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glShadeModel (GL_FLAT);
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}
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void display(void)
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{
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int i;
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glClear (GL_COLOR_BUFFER_BIT);
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/* select white for all lines */
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glColor3f (1.0, 1.0, 1.0);
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/* in 1st row, 3 lines, each with a different stipple */
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glEnable (GL_LINE_STIPPLE);
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glLineStipple (1, 0x0101); /* dotted */
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drawOneLine (50.0, 125.0, 150.0, 125.0);
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glLineStipple (1, 0x00FF); /* dashed */
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drawOneLine (150.0, 125.0, 250.0, 125.0);
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glLineStipple (1, 0x1C47); /* dash/dot/dash */
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drawOneLine (250.0, 125.0, 350.0, 125.0);
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/* in 2nd row, 3 wide lines, each with different stipple */
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glLineWidth (5.0);
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glLineStipple (1, 0x0101); /* dotted */
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drawOneLine (50.0, 100.0, 150.0, 100.0);
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glLineStipple (1, 0x00FF); /* dashed */
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drawOneLine (150.0, 100.0, 250.0, 100.0);
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glLineStipple (1, 0x1C47); /* dash/dot/dash */
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drawOneLine (250.0, 100.0, 350.0, 100.0);
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glLineWidth (1.0);
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/* in 3rd row, 6 lines, with dash/dot/dash stipple */
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/* as part of a single connected line strip */
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glLineStipple (1, 0x1C47); /* dash/dot/dash */
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glBegin (GL_LINE_STRIP);
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for (i = 0; i < 7; i++)
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glVertex2f (50.0 + ((GLfloat) i * 50.0), 75.0);
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glEnd ();
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/* in 4th row, 6 independent lines with same stipple */
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for (i = 0; i < 6; i++) {
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drawOneLine (50.0 + ((GLfloat) i * 50.0), 50.0,
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50.0 + ((GLfloat)(i+1) * 50.0), 50.0);
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}
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/* in 5th row, 1 line, with dash/dot/dash stipple */
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/* and a stipple repeat factor of 5 */
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glLineStipple (5, 0x1C47); /* dash/dot/dash */
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drawOneLine (50.0, 25.0, 350.0, 25.0);
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glDisable (GL_LINE_STIPPLE);
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glFlush ();
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}
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void reshape (int w, int h)
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{
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glViewport (0, 0, (GLsizei) w, (GLsizei) h);
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glMatrixMode (GL_PROJECTION);
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glLoadIdentity ();
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gluOrtho2D (0.0, (GLdouble) w, 0.0, (GLdouble) h);
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}
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/* ARGSUSED1 */
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void keyboard(unsigned char key, int x, int y)
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{
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switch (key) {
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case 27:
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exit(0);
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break;
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}
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}
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int main(int argc, char** argv)
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{
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glutInit(&argc, argv);
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glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
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glutInitWindowSize (400, 150);
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glutInitWindowPosition (100, 100);
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glutCreateWindow (argv[0]);
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init ();
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glutDisplayFunc(display);
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glutReshapeFunc(reshape);
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glutKeyboardFunc(keyboard);
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glutMainLoop();
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return 0;
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}
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