ref: 9eaba52cafcac7c2f3bfc72d7be1f15893196be1
dir: /DoConfig/fltk/src/freeglut_teapot.cxx/
/*
* freeglut_teapot.c
*
* Teapot(tm) rendering code.
*
* Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
* Written by Pawel W. Olszta, <olszta@sourceforge.net>
* Creation date: Fri Dec 24 1999
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* Original teapot code copyright follows:
*/
/*
* (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.
*/
#include <FL/glut.H>
#include "freeglut_teapot_data.h"
/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
static void fghTeapot( GLint grid, GLdouble scale, GLenum type )
{
double p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
long i, j, k, l;
glPushAttrib( GL_ENABLE_BIT | GL_EVAL_BIT );
glEnable( GL_AUTO_NORMAL );
glEnable( GL_NORMALIZE );
glEnable( GL_MAP2_VERTEX_3 );
glEnable( GL_MAP2_TEXTURE_COORD_2 );
glPushMatrix();
glRotated( 270.0, 1.0, 0.0, 0.0 );
glScaled( 0.5 * scale, 0.5 * scale, 0.5 * scale );
glTranslated( 0.0, 0.0, -1.5 );
for (i = 0; i < 10; i++) {
for (j = 0; j < 4; j++) {
for (k = 0; k < 4; k++) {
for (l = 0; l < 3; l++) {
p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
if (l == 1)
q[j][k][l] *= -1.0;
if (i < 6) {
r[j][k][l] =
cpdata[patchdata[i][j * 4 + (3 - k)]][l];
if (l == 0)
r[j][k][l] *= -1.0;
s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
if (l == 0)
s[j][k][l] *= -1.0;
if (l == 1)
s[j][k][l] *= -1.0;
}
}
}
}
glMap2d(GL_MAP2_TEXTURE_COORD_2, 0.0, 1.0, 2, 2, 0.0, 1.0, 4, 2,
&tex[0][0][0]);
glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
&p[0][0][0]);
glMapGrid2d(grid, 0.0, 1.0, grid, 0.0, 1.0);
glEvalMesh2(type, 0, grid, 0, grid);
glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
&q[0][0][0]);
glEvalMesh2(type, 0, grid, 0, grid);
if (i < 6) {
glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
&r[0][0][0]);
glEvalMesh2(type, 0, grid, 0, grid);
glMap2d(GL_MAP2_VERTEX_3, 0.0, 1.0, 3, 4, 0.0, 1.0, 12, 4,
&s[0][0][0]);
glEvalMesh2(type, 0, grid, 0, grid);
}
}
glPopMatrix();
glPopAttrib();
}
/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
/*
* Renders a beautiful wired teapot...
*/
void glutWireTeapot( GLdouble size )
{
/* We will use the general teapot rendering code */
fghTeapot( 10, size, GL_LINE );
}
/*
* Renders a beautiful filled teapot...
*/
void glutSolidTeapot( GLdouble size )
{
/* We will use the general teapot rendering code */
fghTeapot( 7, size, GL_FILL );
}
/*** END OF FILE ***/