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--
-- (c) Copyright 1993,1994,1995,1996 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-- Unpublished-- rights reserved under the copyright laws of the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.
--
with GL; use GL;
with Glut; use Glut;
package body Scenebamb_Procs is
procedure DoInit is
ambient : array (0 .. 3) of aliased GLfloat :=
(0.0, 0.0, 1.0, 1.0);
diffuse : array (0 .. 3) of aliased GLfloat :=
(1.0, 1.0, 1.0, 1.0);
specular : array (0 .. 3) of aliased GLfloat :=
(1.0, 1.0, 1.0, 1.0);
position : array (0 .. 3) of aliased GLfloat :=
(1.0, 1.0, 1.0, 0.0);
begin
glLightfv (GL_LIGHT0, GL_AMBIENT, ambient (0)'access);
glLightfv (GL_LIGHT0, GL_DIFFUSE, diffuse (0)'access);
glLightfv (GL_LIGHT0, GL_POSITION, position (0)'access);
glEnable (GL_LIGHTING);
glEnable (GL_LIGHT0);
glEnable (GL_DEPTH_TEST);
glDepthFunc (GL_LESS);
end DoInit;
procedure DoDisplay is
begin
-- 16#4100# = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT
glClear (GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
glPushMatrix;
glRotatef (20.0, 1.0, 0.0, 0.0);
glPushMatrix;
glTranslatef (-0.75, 0.5, 0.0);
glRotatef (90.0, 1.0, 0.0, 0.0);
glutSolidTorus (0.275, 0.85, 15, 15);
glPopMatrix;
glPushMatrix;
glTranslatef (-0.75, -0.5, 0.0);
glRotatef (270.0, 1.0, 0.0, 0.0);
glutSolidCone (1.0, 2.0, 15, 15);
glPopMatrix;
glPushMatrix;
glTranslatef (0.75, 0.0, -1.0);
glutSolidSphere (1.0, 15, 15);
glPopMatrix;
glPopMatrix;
glFlush;
end DoDisplay;
procedure ReshapeCallback (w : Integer; h : Integer) is
begin
glViewport (0, 0, GLsizei(w), GLsizei(h));
glMatrixMode (GL_PROJECTION);
glLoadIdentity;
if w <= h then
glOrtho (-2.5, 2.5, GLdouble (-2.5*Float (h)/ Float (w)),
GLdouble (2.5*Float (h)/Float (w)), -10.0, 10.0);
else
glOrtho (GLdouble (-2.5*Float (w)/Float (h)),
GLdouble (2.5*Float (w)/Float (h)), -2.5, 2.5, -10.0, 10.0);
end if;
glMatrixMode (GL_MODELVIEW);
end ReshapeCallback;
end Scenebamb_Procs;
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