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#/*
# * 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# * Unpublished-- rights reserved under the copyright laws of the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.
# */
#
#/*
# * list.c
# * This program demonstrates how to make and execute a
# * display list. Note that attributes, such as current
# * color and matrix, are changed.
# */
require "opengl"
require "glut"
require "mathn"
$listName = 0;
def init
$listName = GL.GenLists(1);
GL.NewList($listName, GL::COMPILE);
GL.Color(1.0, 0.0, 0.0); # /* current color red */
GL.Begin(GL::TRIANGLES);
GL.Vertex(0.0, 0.0);
GL.Vertex(1.0, 0.0);
GL.Vertex(0.0, 1.0);
GL.End();
GL.Translate(1.5, 0.0, 0.0); # /* move position */
GL.EndList();
GL.ShadeModel(GL::FLAT);
end
def drawLine
GL.Begin(GL::LINES);
GL.Vertex(0.0, 0.5);
GL.Vertex(15.0, 0.5);
GL.End();
end
display = Proc.new {
GL.Clear(GL::COLOR_BUFFER_BIT);
GL.Color(0.0, 1.0, 0.0); # /* current color green */
for i in (0..9 ) # /* draw 10 triangles */
GL.CallList($listName);
end
drawLine(); # /* is this line green? NO! */
# /* where is the line drawn? */
GL.Flush();
}
reshape = Proc.new {|w, h|
GL.Viewport(0, 0, w, h);
GL.MatrixMode(GL::PROJECTION);
GL.LoadIdentity();
if (w <= h)
GLU.Ortho2D(0.0, 2.0, -0.5 * h/w, 1.5 * h/w);
else
GLU.Ortho2D(0.0, 2.0 * w/h, -0.5, 1.5);
end
GL.MatrixMode(GL::MODELVIEW);
GL.LoadIdentity();
}
# /* 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.
# */
# int main(int argc, char** argv)
# {
GLUT.Init
GLUT.InitDisplayMode(GLUT::SINGLE | GLUT::RGB);
GLUT.InitWindowSize(650, 50);
GLUT.CreateWindow($0);
init();
GLUT.ReshapeFunc(reshape);
GLUT.DisplayFunc(display);
GLUT.KeyboardFunc(keyboard);
GLUT.MainLoop();
# return 0;
#}
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