160 lines
6 KiB
C
160 lines
6 KiB
C
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/*
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* (c) Copyright 1993, Silicon Graphics, Inc.
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* ALL RIGHTS RESERVED
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* Permission to use, copy, modify, and distribute this software for
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* any purpose and without fee is hereby granted, provided that the above
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* copyright notice appear in all copies and that both the copyright notice
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* and this permission notice appear in supporting documentation, and that
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* the name of Silicon Graphics, Inc. not be used in advertising
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* or publicity pertaining to distribution of the software without specific,
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* written prior permission.
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*
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* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
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* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
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* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
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* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
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* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
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* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
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* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
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* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* US Government Users Restricted Rights
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
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* (c)(1)(ii) of the Rights in Technical Data and Computer Software
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* clause at DFARS 252.227-7013 and/or in similar or successor
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* clauses in the FAR or the DOD or NASA FAR Supplement.
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* Unpublished-- rights reserved under the copyright laws of the
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* United States. Contractor/manufacturer is Silicon Graphics,
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* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
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*
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* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
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*/
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#include <windows.h>
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#include <GL/gl.h>
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#include <gl/glaux.h>
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#include "teapot.h"
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#define static
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long GRD;
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#define TEAPOTSOLID 0
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#define TEAPOTWIRE 1
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static GLuint teapots[2] = {0, 0};
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static float tex[2][2][2] = {{{0, 0},{1, 0}},{{0, 1},{1, 1}}};
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static void solidTeapot(long grid, GLdouble scale)
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{
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float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
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long i, j, k, l;
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if (grid < 2) grid = 7;
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GRD = grid;
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teapots[TEAPOTSOLID] = glGenLists (1);
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glNewList(teapots[TEAPOTSOLID], GL_COMPILE);
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glPushMatrix ();
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glRotatef ((GLfloat)270.0, (GLfloat)1.0, (GLfloat)0.0, (GLfloat)0.0);
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glScalef ((GLdouble)0.5*scale, (GLdouble)0.5*scale, (GLdouble)0.5*scale);
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glTranslatef ((GLfloat)0.0, (GLfloat)0.0, (GLfloat)-1.5);
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for (i = 0; i < 10; i++) {
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for (j = 0; j < 4; j++)
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for (k = 0; k < 4; k++)
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for (l = 0; l < 3; l++) {
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p[j][k][l] = cpdata[patchdata[i][j*4+k]][l];
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q[j][k][l] = cpdata[patchdata[i][j*4+(3-k)]][l];
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if (l == 1) q[j][k][l] *= (float)-1.0;
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if (i < 6) {
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r[j][k][l] = cpdata[patchdata[i][j*4+(3-k)]][l];
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if (l == 0) r[j][k][l] *= (float)-1.0;
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s[j][k][l] = cpdata[patchdata[i][j*4+k]][l];
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if (l == 0) s[j][k][l] *= (float)-1.0;
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if (l == 1) s[j][k][l] *= (float)-1.0;
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}
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}
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glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, &tex[0][0][0]);
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &p[0][0][0]);
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glEnable(GL_MAP2_VERTEX_3); glEnable(GL_MAP2_TEXTURE_COORD_2);
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glMapGrid2f(GRD, (GLfloat)0.0, (GLfloat)1.0, GRD, (GLfloat)0.0, (GLfloat)1.0);
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glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &q[0][0][0]);
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glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
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if (i < 6) {
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &r[0][0][0]);
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glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &s[0][0][0]);
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glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
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}
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}
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glDisable(GL_MAP2_VERTEX_3); glDisable(GL_MAP2_TEXTURE_COORD_2);
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glPopMatrix ();
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glEndList();
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}
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static void wireTeapot(long grid, GLdouble scale)
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{
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float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
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long i, j, k, l;
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if (grid < 2) grid = 7;
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GRD = grid;
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teapots[TEAPOTWIRE] = glGenLists (1);
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glNewList(teapots[TEAPOTWIRE], GL_COMPILE);
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glPushMatrix ();
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glRotatef ((GLfloat)270.0, (GLfloat)1.0, (GLfloat)0.0, (GLfloat)0.0);
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glScalef ((GLdouble)0.5*scale, (GLdouble)0.5*scale, (GLdouble)0.5*scale);
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glTranslatef ((GLfloat)0.0, (GLfloat)0.0, (GLfloat)-1.5);
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for (i = 0; i < 10; i++) {
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for (j = 0; j < 4; j++)
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for (k = 0; k < 4; k++)
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for (l = 0; l < 3; l++) {
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p[j][k][l] = cpdata[patchdata[i][j*4+k]][l];
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q[j][k][l] = cpdata[patchdata[i][j*4+(3-k)]][l];
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if (l == 1) q[j][k][l] *= (float)-1.0;
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if (i < 6) {
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r[j][k][l] = cpdata[patchdata[i][j*4+(3-k)]][l];
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if (l == 0) r[j][k][l] *= (float)-1.0;
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s[j][k][l] = cpdata[patchdata[i][j*4+k]][l];
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if (l == 0) s[j][k][l] *= (float)-1.0;
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if (l == 1) s[j][k][l] *= (float)-1.0;
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}
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}
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glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, &tex[0][0][0]);
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &p[0][0][0]);
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glEnable(GL_MAP2_VERTEX_3); glEnable(GL_MAP2_TEXTURE_COORD_2);
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glMapGrid2f(GRD, (GLfloat)0.0, (GLfloat)1.0, GRD, (GLfloat)0.0, (GLfloat)1.0);
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glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &q[0][0][0]);
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glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
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if (i < 6) {
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &r[0][0][0]);
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glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
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glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &s[0][0][0]);
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glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
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}
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}
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glDisable(GL_MAP2_VERTEX_3); glDisable(GL_MAP2_TEXTURE_COORD_2);
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glPopMatrix ();
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glEndList();
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}
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void auxSolidTeapot(GLdouble scale)
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{
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if (glIsList(teapots[TEAPOTSOLID]) == 0)
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solidTeapot (14, scale);
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glCallList(teapots[TEAPOTSOLID]);
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}
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void auxWireTeapot(GLdouble scale)
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{
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if (glIsList(teapots[TEAPOTWIRE]) == 0)
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wireTeapot (10, scale);
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glCallList(teapots[TEAPOTWIRE]);
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}
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