(* 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 * Unpublished-- rights reserved under the copyright laws of the * United States.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. *) (* clip.ml * This program demonstrates arbitrary clipping planes. *) (* Ported from C to OCaml by Florent Monnier *) open GL open Glu open Glut let init() = glClearColor 0.0 0.0 0.0 0.0; glShadeModel GL_FLAT; ;; let display() = let eqn = [| 0.0; 1.0; 0.0; 0.0 |] and eqn2 = [| 1.0; 0.0; 0.0; 0.0 |] in glClear [GL_COLOR_BUFFER_BIT]; glColor3 1.0 1.0 1.0; glPushMatrix(); glTranslate 0.0 0.0 (-5.0); (* clip lower half -- y < 0 *) glClipPlane Plane.GL_CLIP_PLANE0 eqn; glEnable GL_CLIP_PLANE0; (* clip left half -- x < 0 *) glClipPlane Plane.GL_CLIP_PLANE1 eqn2; glEnable GL_CLIP_PLANE1; glRotate 90.0 1.0 0.0 0.0; glutWireSphere 1.0 20 16; glPopMatrix(); glFlush (); ;; let reshape ~width:w ~height:h = glViewport 0 0 w h; glMatrixMode GL_PROJECTION; glLoadIdentity (); gluPerspective 60.0 (float w /. float h) 1.0 20.0; glMatrixMode GL_MODELVIEW; ;; let keyboard ~key ~x ~y = match key with | '\027' -> exit(0); | _ -> () ;; let () = let _ = glutInit Sys.argv in glutInitDisplayMode [GLUT_SINGLE; GLUT_RGB]; glutInitWindowSize 500 500; glutInitWindowPosition 100 100; let _ = glutCreateWindow Sys.argv.(0) in init (); glutDisplayFunc ~display; glutReshapeFunc ~reshape; glutKeyboardFunc ~keyboard; glutMainLoop(); ;;