/usr/share/doc/ruby-opengl/examples/misc/plane.rb is in ruby-opengl 0.60.1+dfsg2-1~wheezy1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | #!/usr/bin/env ruby -rubygems
#/* Copyright (c) Mark J. Kilgard, 1994. */
#
#/*
# * (c) Copyright 1993, 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# * Unpublished-- rights reserved under the copyright laws of the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(TM) is a trademark of Silicon Graphics, Inc.
# */
#/*
# * plane.c
# * This program demonstrates the use of local versus
# * infinite lighting on a flat plane.
# */
require "gl"
require "glut"
require "mathn"
# /* Initialize material property, light source, and lighting model.
# */
def myinit
mat_ambient = [ 0.0, 0.0, 0.0, 1.0 ];
#/* mat_specular and mat_shininess are NOT default values */
mat_diffuse = [ 0.4, 0.4, 0.4, 1.0 ];
mat_specular = [ 1.0, 1.0, 1.0, 1.0 ];
mat_shininess = [ 15.0 ];
light_ambient = [ 0.0, 0.0, 0.0, 1.0 ];
light_diffuse = [ 1.0, 1.0, 1.0, 1.0 ];
light_specular = [ 1.0, 1.0, 1.0, 1.0 ];
lmodel_ambient = [ 0.2, 0.2, 0.2, 1.0 ];
Gl.glMaterial(Gl::GL_FRONT, Gl::GL_AMBIENT, mat_ambient);
Gl.glMaterial(Gl::GL_FRONT, Gl::GL_DIFFUSE, mat_diffuse);
Gl.glMaterial(Gl::GL_FRONT, Gl::GL_SPECULAR, mat_specular);
Gl.glMaterial(Gl::GL_FRONT, Gl::GL_SHININESS, *mat_shininess);
Gl.glLight(Gl::GL_LIGHT0, Gl::GL_AMBIENT, light_ambient);
Gl.glLight(Gl::GL_LIGHT0, Gl::GL_DIFFUSE, light_diffuse);
Gl.glLight(Gl::GL_LIGHT0, Gl::GL_SPECULAR, light_specular);
Gl.glLightModel(Gl::GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
Gl.glEnable(Gl::GL_LIGHTING);
Gl.glEnable(Gl::GL_LIGHT0);
Gl.glDepthFunc(Gl::GL_LESS);
Gl.glEnable(Gl::GL_DEPTH_TEST);
end
def drawPlane
Gl.glBegin(Gl::GL_QUADS);
Gl.glNormal(0.0, 0.0, 1.0);
Gl.glVertex(-1.0, -1.0, 0.0);
Gl.glVertex(0.0, -1.0, 0.0);
Gl.glVertex(0.0, 0.0, 0.0);
Gl.glVertex(-1.0, 0.0, 0.0);
Gl.glNormal(0.0, 0.0, 1.0);
Gl.glVertex(0.0, -1.0, 0.0);
Gl.glVertex(1.0, -1.0, 0.0);
Gl.glVertex(1.0, 0.0, 0.0);
Gl.glVertex(0.0, 0.0, 0.0);
Gl.glNormal(0.0, 0.0, 1.0);
Gl.glVertex(0.0, 0.0, 0.0);
Gl.glVertex(1.0, 0.0, 0.0);
Gl.glVertex(1.0, 1.0, 0.0);
Gl.glVertex(0.0, 1.0, 0.0);
Gl.glNormal(0.0, 0.0, 1.0);
Gl.glVertex(0.0, 0.0, 0.0);
Gl.glVertex(0.0, 1.0, 0.0);
Gl.glVertex(-1.0, 1.0, 0.0);
Gl.glVertex(-1.0, 0.0, 0.0);
Gl.glEnd();
end
display = Proc.new {
infinite_light = [ 1.0, 1.0, 1.0, 0.0 ];
local_light = [ 1.0, 1.0, 1.0, 1.0 ];
Gl.glClear(Gl::GL_COLOR_BUFFER_BIT | Gl::GL_DEPTH_BUFFER_BIT);
Gl.glPushMatrix();
Gl.glTranslate(-1.5, 0.0, 0.0);
Gl.glLight(Gl::GL_LIGHT0, Gl::GL_POSITION, infinite_light);
drawPlane();
Gl.glPopMatrix();
Gl.glPushMatrix();
Gl.glTranslate(1.5, 0.0, 0.0);
Gl.glLight(Gl::GL_LIGHT0, Gl::GL_POSITION, local_light);
drawPlane();
Gl.glPopMatrix();
Gl.glFlush();
}
myReshape = Proc.new {|w, h|
Gl.glViewport(0, 0, w, h);
Gl.glMatrixMode(Gl::GL_PROJECTION);
Gl.glLoadIdentity();
if (w <= h)
Gl.glOrtho(-1.5, 1.5, -1.5*h/w, 1.5*h/w, -10.0, 10.0);
else
Gl.glOrtho(-1.5*w/h, 1.5*w/h, -1.5, 1.5, -10.0, 10.0);
end
Gl.glMatrixMode(Gl::GL_MODELVIEW);
}
# Keyboard handler to exit when ESC is typed
keyboard = lambda do |key, x, y|
case(key)
when ?\e
exit(0)
end
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.glutInit
Glut.glutInitDisplayMode(Glut::GLUT_SINGLE | Glut::GLUT_RGB | Glut::GLUT_DEPTH);
Glut.glutInitWindowSize(500, 200);
Glut.glutCreateWindow($0);
myinit();
Glut.glutReshapeFunc(myReshape);
Glut.glutDisplayFunc(display);
Glut.glutKeyboardFunc(keyboard);
Glut.glutMainLoop();
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