#/* # * 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 # * Unpublished-- rights reserved under the copyright laws of the # * United States.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. # */ # #/* # * aapoly.c # * This program draws filled polygons with antialiased # * edges. The special GL_SRC_ALPHA_SATURATE blending # * function is used. # * Pressing the 't' key turns the antialiasing on and off. # */ require 'RUDL' include RUDL require "opengl" require 'glut' require "rational" STDOUT.sync = TRUE $year = 0 $day = 0 def init GL.ClearColor(0.0, 0.0, 0.0, 0.0) GL.ShadeModel(GL::FLAT) end display = Proc.new { GL.Clear(GL::COLOR_BUFFER_BIT) GL.Color(1.0, 1.0, 1.0) GL.PushMatrix() GLUT.WireSphere(1.0, 20, 16) # draw sun */ GL.Rotate($year, 0.0, 1.0, 0.0) GL.Translate(2.0, 0.0, 0.0) GL.Rotate($day, 0.0, 1.0, 0.0) GLUT.WireSphere(0.2, 10, 8) # draw smaller planet */ GL.PopMatrix() } reshape = Proc.new { |w, h| GL.Viewport(0, 0, w, h) GL.MatrixMode(GL::PROJECTION) GL.LoadIdentity GLU.Perspective(60.0, w.to_f/h.to_f, 1.0, 20.0) GL.MatrixMode(GL::MODELVIEW) GL.LoadIdentity GLU.LookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0) } include Constant $d=DisplaySurface.new([640,480], OPENGL|DOUBLEBUF|FULLSCREEN) init Key.set_repeat(1,10) done=false while !done event=EventQueue.poll case event when QuitEvent done=true when KeyDownEvent case event.key when K_ESCAPE done=true when K_LEFT $day = ($day + 10) % 360 when K_RIGHT $day = ($day - 10) % 360 when K_UP $year = ($year + 5) % 360 when K_DOWN $year = ($year - 5) % 360 end end reshape.call(400,400) display.call $d.flip end