/* * Copyright (c) 1993-1997, 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 * Unpublished-- rights reserved under the copyright laws of the * United States.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(R) is a registered trademark of Silicon Graphics, Inc. */ /* * lines.c * This program demonstrates geometric primitives and * their attributes. */ #include <GL/glut.h> #include <stdlib.h> #define drawOneLine(x1,y1,x2,y2) glBegin(GL_LINES); \ glVertex2f ((x1),(y1)); glVertex2f ((x2),(y2)); glEnd(); void init(void) { glClearColor (0.0, 0.0, 0.0, 0.0); glShadeModel (GL_FLAT); } void display(void) { int i; glClear (GL_COLOR_BUFFER_BIT); /* select white for all lines */ glColor3f (1.0, 1.0, 1.0); /* in 1st row, 3 lines, 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, each with different stipple */ glLineWidth (5.0); glLineStipple (1, 0x0101); /* dotted */ drawOneLine (50.0, 100.0, 150.0, 100.0); glLineStipple (1, 0x00FF); /* dashed */ drawOneLine (150.0, 100.0, 250.0, 100.0); glLineStipple (1, 0x1C47); /* dash/dot/dash */ drawOneLine (250.0, 100.0, 350.0, 100.0); glLineWidth (1.0); /* in 3rd row, 6 lines, with dash/dot/dash stipple */ /* as part of a single connected line strip */ glLineStipple (1, 0x1C47); /* dash/dot/dash */ 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 with same 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, with dash/dot/dash stipple */ /* and a stipple repeat factor of 5 */ glLineStipple (5, 0x1C47); /* dash/dot/dash */ drawOneLine (50.0, 25.0, 350.0, 25.0); glDisable (GL_LINE_STIPPLE); glFlush (); } void reshape (int w, int h) { glViewport (0, 0, (GLsizei) w, (GLsizei) h); glMatrixMode (GL_PROJECTION); glLoadIdentity (); gluOrtho2D (0.0, (GLdouble) w, 0.0, (GLdouble) h); } /* ARGSUSED1 */ void keyboard(unsigned char key, int x, int y) { switch (key) { case 27: exit(0); break; } } int main(int argc, char** argv) { glutInit(&argc, argv); glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB); glutInitWindowSize (400, 150); glutInitWindowPosition (100, 100); glutCreateWindow (argv[0]); init (); glutDisplayFunc(display); glutReshapeFunc(reshape); glutKeyboardFunc(keyboard); glutMainLoop(); return 0; }