# # 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 # Unpublished-- rights reserved under the copyright laws of the # United States.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. #/ #* #* drawf.c #* Draws the bitmapped letter F on the screen (several times). #* This demonstrates use of the glBitmap() call. #*/ require "opengl" require "glut" $rasters = [ 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xff, 0x00, 0xff, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xff, 0xc0, 0xff, 0xc0].pack("C*"); def init GL.PixelStorei(GL::UNPACK_ALIGNMENT, 1); GL.ClearColor(0.0, 0.0, 0.0, 0.0); end display = Proc.new { GL.Clear(GL::COLOR_BUFFER_BIT); GL.Color(1.0, 1.0, 1.0); GL.RasterPos2i(20, 20); GL.Bitmap(10, 12, 0.0, 0.0, 11.0, 0.0, $rasters); GL.Bitmap(10, 12, 0.0, 0.0, 11.0, 0.0, $rasters); GL.Bitmap(10, 12, 0.0, 0.0, 11.0, 0.0, $rasters); GL.Flush(); } reshape = Proc.new {|w, h| GL.Viewport(0, 0, w, h); GL.MatrixMode(GL::PROJECTION); GL.LoadIdentity(); GL.Ortho(0, w, 0, h, -1.0, 1.0); GL.MatrixMode(GL::MODELVIEW); } #* ARGSUSED1 */ keyboard = Proc.new {|key, x, y| case (key) when 27 exit(0); end } #* Main Loop #* Open window with initial window size, title bar, #* RGBA display mode, and handle input events. #*/ GLUT.Init GLUT.InitDisplayMode(GLUT::SINGLE | GLUT::RGB); GLUT.InitWindowSize(100, 100); GLUT.InitWindowPosition(100, 100); GLUT.CreateWindow($0); init(); GLUT.ReshapeFunc(reshape); GLUT.KeyboardFunc(keyboard); GLUT.DisplayFunc(display); GLUT.MainLoop();