Initial revision

1 files changed, 138 insertions, 0 deletions

diff --git a/progs/redbook/lines.c b/progs/redbook/lines.c
new file mode 100644
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+++ b/progs/redbook/lines.c
@@ -0,0 +1,138 @@
+/*
+ * 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+ * Unpublished-- rights reserved under the copyright laws of the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;
+}