teapots_procs.adb
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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- -- Unpublished-- rights reserved under the copyright laws of the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 Teapots_Procs is
- procedure DoInit is
- ambient : array (0 .. 3) of aliased GLfloat :=
- (0.0, 0.0, 0.0, 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 :=
- (0.0, 3.0, 3.0, 0.0);
- lmodel_ambient : array (0 .. 3) of aliased GLfloat :=
- (0.2, 0.2, 0.2, 1.0);
- local_view : aliased GLfloat := 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);
- glLightModelfv (GL_LIGHT_MODEL_AMBIENT, lmodel_ambient (0)'Access);
- glLightModelfv (GL_LIGHT_MODEL_LOCAL_VIEWER, local_view'Access);
- glFrontFace (GL_CW);
- glEnable (GL_LIGHTING);
- glEnable (GL_LIGHT0);
- glEnable (GL_AUTO_NORMAL);
- glEnable (GL_NORMALIZE);
- glEnable (GL_DEPTH_TEST);
- glDepthFunc (GL_LESS);
- end DoInit;
- procedure renderTeapot
- (x : GLfloat; y : GLfloat; ambr : GLfloat;
- ambg : GLfloat; ambb : GLfloat; difr : GLfloat;
- difg : GLfloat; difb : GLfloat; specr : GLfloat;
- specg : GLfloat; specb : GLfloat; shine : GLfloat)
- is
- mat : array (0 .. 3) of aliased GLfloat;
- begin
- glPushMatrix;
- glTranslatef (x, y, 0.0);
- mat (0) := ambr;
- mat (1) := ambg;
- mat (2) := ambb;
- mat (3) := 1.0;
- glMaterialfv (GL_FRONT, GL_AMBIENT, mat (0)'Access);
- mat (0) := difr;
- mat (1) := difg;
- mat (2) := difb;
- glMaterialfv (GL_FRONT, GL_DIFFUSE, mat (0)'Access);
- mat (0) := specr;
- mat (1) := specg;
- mat (2) := specb;
- glMaterialfv (GL_FRONT, GL_SPECULAR, mat (0)'Access);
- glMaterialf (GL_FRONT, GL_SHININESS, shine * 128.0);
- glutSolidTeapot (1.0);
- glPopMatrix;
- end renderTeapot;
- procedure DoDisplay is
- begin
- -- 16#4100# = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT
- glClear (GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
- renderTeapot (2.0, 17.0, 0.0215, 0.1745, 0.0215,
- 0.07568, 0.61424, 0.07568, 0.633, 0.727811, 0.633, 0.6);
- renderTeapot (2.0, 14.0, 0.135, 0.2225, 0.1575,
- 0.54, 0.89, 0.63, 0.316228, 0.316228, 0.316228, 0.1);
- renderTeapot (2.0, 11.0, 0.05375, 0.05, 0.06625,
- 0.18275, 0.17, 0.22525, 0.332741, 0.328634, 0.346435, 0.3);
- renderTeapot (2.0, 8.0, 0.25, 0.20725, 0.20725,
- 1.0, 0.829, 0.829, 0.296648, 0.296648, 0.296648, 0.088);
- renderTeapot (2.0, 5.0, 0.1745, 0.01175, 0.01175,
- 0.61424, 0.04136, 0.04136, 0.727811, 0.626959, 0.626959, 0.6);
- renderTeapot (2.0, 2.0, 0.1, 0.18725, 0.1745,
- 0.396, 0.74151, 0.69102, 0.297254, 0.30829, 0.306678, 0.1);
- renderTeapot (6.0, 17.0, 0.329412, 0.223529, 0.027451,
- 0.780392, 0.568627, 0.113725, 0.992157, 0.941176, 0.807843,
- 0.21794872);
- renderTeapot (6.0, 14.0, 0.2125, 0.1275, 0.054,
- 0.714, 0.4284, 0.18144, 0.393548, 0.271906, 0.166721, 0.2);
- renderTeapot (6.0, 11.0, 0.25, 0.25, 0.25,
- 0.4, 0.4, 0.4, 0.774597, 0.774597, 0.774597, 0.6);
- renderTeapot (6.0, 8.0, 0.19125, 0.0735, 0.0225,
- 0.7038, 0.27048, 0.0828, 0.256777, 0.137622, 0.086014, 0.1);
- renderTeapot (6.0, 5.0, 0.24725, 0.1995, 0.0745,
- 0.75164, 0.60648, 0.22648, 0.628281, 0.555802, 0.366065, 0.4);
- renderTeapot (6.0, 2.0, 0.19225, 0.19225, 0.19225,
- 0.50754, 0.50754, 0.50754, 0.508273, 0.508273, 0.508273, 0.4);
- renderTeapot (10.0, 17.0, 0.0, 0.0, 0.0, 0.01, 0.01, 0.01,
- 0.50, 0.50, 0.50, 0.25);
- renderTeapot (10.0, 14.0, 0.0, 0.1, 0.06, 0.0, 0.50980392, 0.50980392,
- 0.50196078, 0.50196078, 0.50196078, 0.25);
- renderTeapot (10.0, 11.0, 0.0, 0.0, 0.0,
- 0.1, 0.35, 0.1, 0.45, 0.55, 0.45, 0.25);
- renderTeapot (10.0, 8.0, 0.0, 0.0, 0.0, 0.5, 0.0, 0.0,
- 0.7, 0.6, 0.6, 0.25);
- renderTeapot (10.0, 5.0, 0.0, 0.0, 0.0, 0.55, 0.55, 0.55,
- 0.70, 0.70, 0.70, 0.25);
- renderTeapot (10.0, 2.0, 0.0, 0.0, 0.0, 0.5, 0.5, 0.0,
- 0.60, 0.60, 0.50, 0.25);
- renderTeapot (14.0, 17.0, 0.02, 0.02, 0.02, 0.01, 0.01, 0.01,
- 0.4, 0.4, 0.4, 0.078125);
- renderTeapot (14.0, 14.0, 0.0, 0.05, 0.05, 0.4, 0.5, 0.5,
- 0.04, 0.7, 0.7, 0.078125);
- renderTeapot (14.0, 11.0, 0.0, 0.05, 0.0, 0.4, 0.5, 0.4,
- 0.04, 0.7, 0.04, 0.078125);
- renderTeapot (14.0, 8.0, 0.05, 0.0, 0.0, 0.5, 0.4, 0.4,
- 0.7, 0.04, 0.04, 0.078125);
- renderTeapot (14.0, 5.0, 0.05, 0.05, 0.05, 0.5, 0.5, 0.5,
- 0.7, 0.7, 0.7, 0.078125);
- renderTeapot (14.0, 2.0, 0.05, 0.05, 0.0, 0.5, 0.5, 0.4,
- 0.7, 0.7, 0.04, 0.078125);
- 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 (0.0, 16.0, 0.0, GLdouble (16.0*Float (h)/Float (w)),
- -10.0, 0.0);
- else
- glOrtho (0.0, GLdouble (16.0*Float (w)/Float (h)),
- 0.0, 16.0, -10.0, 10.0);
- end if;
- glMatrixMode (GL_MODELVIEW);
- end ReshapeCallback;
- end Teapots_Procs;