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1134 lines
34 KiB
1134 lines
34 KiB
/*
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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 <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include <gl/glaux.h>
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#include "3d.h"
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#define static
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#define SPHEREWIRE 0
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#define CUBEWIRE 1
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#define BOXWIRE 2
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#define TORUSWIRE 3
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#define CYLINDERWIRE 4
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#define ICOSAWIRE 5
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#define OCTAWIRE 6
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#define TETRAWIRE 7
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#define DODECAWIRE 8
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#define CONEWIRE 9
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#define SPHERESOLID 10
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#define CUBESOLID 11
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#define BOXSOLID 12
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#define TORUSSOLID 13
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#define CYLINDERSOLID 14
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#define ICOSASOLID 15
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#define OCTASOLID 16
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#define TETRASOLID 17
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#define DODECASOLID 18
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#define CONESOLID 19
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#define PI ((GLdouble)3.1415926535897)
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/* structure for each geometric object */
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typedef struct model {
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GLuint list; /* display list to render object */
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struct model *ptr; /* pointer to next object */
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int numParam; /* # of parameters */
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GLdouble *params; /* array with parameters */
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} MODEL, *MODELPTR;
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/* array of linked lists--used to keep track of display lists
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* for each different type of geometric object.
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*/
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static MODELPTR lists[25] = {
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NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL
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};
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GLuint findList (int index, GLdouble *paramArray, int size);
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int compareParams (GLdouble *oneArray, GLdouble *twoArray, int size);
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GLuint makeModelPtr (int index, GLdouble *sizeArray, int count);
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static void drawbox(GLdouble, GLdouble, GLdouble,
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GLdouble, GLdouble, GLdouble, GLenum);
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static void doughnut(GLdouble, GLdouble, GLint, GLint, GLenum);
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static void icosahedron(GLdouble *, GLdouble, GLenum);
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static void octahedron(GLdouble *, GLdouble, GLenum);
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static void tetrahedron(GLdouble *, GLdouble, GLenum);
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static void subdivide(int, GLdouble *, GLdouble *, GLdouble *,
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GLdouble *, GLdouble, GLenum, int);
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static void drawtriangle(int, int, int,
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GLdouble *, GLdouble, GLenum, int);
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static void recorditem(GLdouble *, GLdouble *, GLdouble *,
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GLdouble *, GLdouble, GLenum, int);
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static void initdodec(void);
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static void dodecahedron(GLdouble *, GLdouble, GLenum);
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static void pentagon(int, int, int, int, int, GLenum);
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/* Render wire frame or solid sphere. If no display list with
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* the current model size exists, create a new display list.
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*/
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void auxWireSphere (GLdouble radius)
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{
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GLUquadricObj *quadObj;
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GLdouble *sizeArray;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
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if (!sizeArray)
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return;
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*sizeArray = radius;
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displayList = findList (SPHEREWIRE, sizeArray, 1);
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if (displayList == 0) {
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glNewList(makeModelPtr (SPHEREWIRE, sizeArray, 1),
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GL_COMPILE_AND_EXECUTE);
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quadObj = gluNewQuadric ();
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gluQuadricDrawStyle (quadObj, GLU_LINE);
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gluSphere (quadObj, radius, 16, 16);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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void auxSolidSphere (GLdouble radius)
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{
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GLUquadricObj *quadObj;
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GLdouble *sizeArray;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
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if (!sizeArray)
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return;
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*sizeArray = radius;
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displayList = findList (SPHERESOLID, sizeArray, 1);
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if (displayList == 0) {
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glNewList(makeModelPtr (SPHERESOLID, sizeArray, 1),
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GL_COMPILE_AND_EXECUTE);
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quadObj = gluNewQuadric ();
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gluQuadricDrawStyle (quadObj, GLU_FILL);
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gluQuadricNormals (quadObj, GLU_SMOOTH);
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gluSphere (quadObj, radius, 16, 16);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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/* Render wire frame or solid cube. If no display list with
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* the current model size exists, create a new display list.
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*/
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void auxWireCube (GLdouble size)
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{
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GLdouble *sizeArray;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
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if (!sizeArray)
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return;
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*sizeArray = size;
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displayList = findList (CUBEWIRE, sizeArray, 1);
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if (displayList == 0) {
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glNewList(makeModelPtr (CUBEWIRE, sizeArray, 1),
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GL_COMPILE_AND_EXECUTE);
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drawbox(-size/(GLdouble)2., size/(GLdouble)2., -size/(GLdouble)2., size/(GLdouble)2.,
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-size/(GLdouble)2., size/(GLdouble)2., GL_LINE_LOOP);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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void auxSolidCube (GLdouble size)
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{
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GLdouble *sizeArray;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
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if (!sizeArray)
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return;
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*sizeArray = size;
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displayList = findList (CUBESOLID, sizeArray, 1);
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if (displayList == 0) {
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glNewList(makeModelPtr (CUBESOLID, sizeArray, 1),
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GL_COMPILE_AND_EXECUTE);
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drawbox(-size/(GLdouble)2., size/(GLdouble)2., -size/(GLdouble)2., size/(GLdouble)2.,
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-size/(GLdouble)2., size/(GLdouble)2., GL_QUADS);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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/* Render wire frame or solid cube. If no display list with
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* the current model size exists, create a new display list.
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*/
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void auxWireBox (GLdouble width, GLdouble height, GLdouble depth)
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{
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GLdouble *sizeArray, *tmp;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 3);
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if (!sizeArray)
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return;
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tmp = sizeArray;
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*tmp++ = width;
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*tmp++ = height;
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*tmp++ = depth;
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displayList = findList (BOXWIRE, sizeArray, 3);
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if (displayList == 0) {
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glNewList(makeModelPtr (BOXWIRE, sizeArray, 3),
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GL_COMPILE_AND_EXECUTE);
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drawbox(-width/(GLdouble)2., width/(GLdouble)2., -height/(GLdouble)2., height/(GLdouble)2.,
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-depth/(GLdouble)2., depth/(GLdouble)2., GL_LINE_LOOP);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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void auxSolidBox (GLdouble width, GLdouble height, GLdouble depth)
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{
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GLdouble *sizeArray, *tmp;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 3);
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if (!sizeArray)
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return;
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tmp = sizeArray;
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*tmp++ = width;
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*tmp++ = height;
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*tmp++ = depth;
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displayList = findList (BOXSOLID, sizeArray, 3);
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if (displayList == 0) {
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glNewList(makeModelPtr (BOXSOLID, sizeArray, 3),
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GL_COMPILE_AND_EXECUTE);
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drawbox(-width/(GLdouble)2., width/(GLdouble)2., -height/(GLdouble)2., height/(GLdouble)2.,
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-depth/(GLdouble)2., depth/(GLdouble)2., GL_QUADS);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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/* Render wire frame or solid tori. If no display list with
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* the current model size exists, create a new display list.
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*/
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void auxWireTorus (GLdouble innerRadius, GLdouble outerRadius)
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{
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GLdouble *sizeArray, *tmp;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 2);
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if (!sizeArray)
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return;
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tmp = sizeArray;
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*tmp++ = innerRadius;
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*tmp++ = outerRadius;
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displayList = findList (TORUSWIRE, sizeArray, 2);
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if (displayList == 0) {
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glNewList(makeModelPtr (TORUSWIRE, sizeArray, 2),
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GL_COMPILE_AND_EXECUTE);
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doughnut(innerRadius, outerRadius, 5, 10, GL_LINE_LOOP);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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void auxSolidTorus (GLdouble innerRadius, GLdouble outerRadius)
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{
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GLdouble *sizeArray, *tmp;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 2);
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if (!sizeArray)
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return;
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tmp = sizeArray;
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*tmp++ = innerRadius;
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*tmp++ = outerRadius;
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displayList = findList (TORUSSOLID, sizeArray, 2);
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if (displayList == 0) {
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glNewList(makeModelPtr (TORUSSOLID, sizeArray, 2),
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GL_COMPILE_AND_EXECUTE);
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doughnut(innerRadius, outerRadius, 8, 15, GL_QUADS);
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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/* Render wire frame or solid cylinders. If no display list with
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* the current model size exists, create a new display list.
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*/
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void auxWireCylinder (GLdouble radius, GLdouble height)
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{
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GLUquadricObj *quadObj;
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GLdouble *sizeArray, *tmp;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 2);
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if (!sizeArray)
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return;
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tmp = sizeArray;
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*tmp++ = radius;
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*tmp++ = height;
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displayList = findList (CYLINDERWIRE, sizeArray, 2);
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if (displayList == 0) {
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glNewList(makeModelPtr (CYLINDERWIRE, sizeArray, 2),
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GL_COMPILE_AND_EXECUTE);
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glPushMatrix ();
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glRotatef ((GLfloat)90.0, (GLfloat)1.0, (GLfloat)0.0, (GLfloat)0.0);
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glTranslatef ((GLfloat)0.0, (GLfloat)0.0, (GLfloat)-1.0);
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quadObj = gluNewQuadric ();
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gluQuadricDrawStyle (quadObj, GLU_LINE);
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gluCylinder (quadObj, radius, radius, height, 12, 2);
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glPopMatrix ();
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glEndList();
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}
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else {
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glCallList(displayList);
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free (sizeArray);
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}
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}
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void auxSolidCylinder (GLdouble radius, GLdouble height)
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{
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GLUquadricObj *quadObj;
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GLdouble *sizeArray, *tmp;
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GLuint displayList;
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 2);
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if (!sizeArray)
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return;
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tmp = sizeArray;
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*tmp++ = radius;
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*tmp++ = height;
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displayList = findList (CYLINDERWIRE, sizeArray, 2);
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if (displayList == 0) {
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glNewList(makeModelPtr (CYLINDERWIRE, sizeArray, 2),
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GL_COMPILE_AND_EXECUTE);
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glPushMatrix ();
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glRotatef ((GLfloat)90.0, (GLfloat)1.0, (GLfloat)0.0, (GLfloat)0.0);
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glTranslatef ((GLfloat)0.0, (GLfloat)0.0, (GLfloat)-1.0);
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quadObj = gluNewQuadric ();
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gluQuadricDrawStyle (quadObj, GLU_FILL);
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gluQuadricNormals (quadObj, GLU_SMOOTH);
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gluCylinder (quadObj, radius, radius, height, 12, 2);
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glPopMatrix ();
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glEndList();
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}
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else {
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glCallList(displayList);
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|
free (sizeArray);
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}
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}
|
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|
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/* Render wire frame or solid icosahedra. If no display list with
|
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* the current model size exists, create a new display list.
|
|
*/
|
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void auxWireIcosahedron (GLdouble radius)
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{
|
|
GLdouble *sizeArray;
|
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GLuint displayList;
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GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
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sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
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return;
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*sizeArray = radius;
|
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displayList = findList (ICOSAWIRE, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
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glNewList(makeModelPtr (ICOSAWIRE, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
icosahedron (center, radius, GL_LINE_LOOP);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
void auxSolidIcosahedron (GLdouble radius)
|
|
{
|
|
GLdouble *sizeArray;
|
|
GLuint displayList;
|
|
GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
|
|
return;
|
|
*sizeArray = radius;
|
|
displayList = findList (ICOSASOLID, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (ICOSASOLID, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
icosahedron (center, radius, GL_TRIANGLES);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
/* Render wire frame or solid octahedra. If no display list with
|
|
* the current model size exists, create a new display list.
|
|
*/
|
|
void auxWireOctahedron (GLdouble radius)
|
|
{
|
|
GLdouble *sizeArray;
|
|
GLuint displayList;
|
|
GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
|
|
return;
|
|
*sizeArray = radius;
|
|
displayList = findList (OCTAWIRE, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (OCTAWIRE, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
octahedron (center, radius, GL_LINE_LOOP);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
void auxSolidOctahedron (GLdouble radius)
|
|
{
|
|
GLdouble *sizeArray;
|
|
GLuint displayList;
|
|
GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
|
|
return;
|
|
*sizeArray = radius;
|
|
displayList = findList (OCTASOLID, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (OCTASOLID, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
octahedron (center, radius, GL_TRIANGLES);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
/* Render wire frame or solid tetrahedra. If no display list with
|
|
* the current model size exists, create a new display list.
|
|
*/
|
|
void auxWireTetrahedron (GLdouble radius)
|
|
{
|
|
GLdouble *sizeArray;
|
|
GLuint displayList;
|
|
GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
|
|
return;
|
|
*sizeArray = radius;
|
|
displayList = findList (TETRAWIRE, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (TETRAWIRE, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
tetrahedron (center, radius, GL_LINE_LOOP);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
void auxSolidTetrahedron (GLdouble radius)
|
|
{
|
|
GLdouble *sizeArray;
|
|
GLuint displayList;
|
|
GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
|
|
return;
|
|
*sizeArray = radius;
|
|
displayList = findList (TETRASOLID, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (TETRASOLID, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
tetrahedron (center, radius, GL_TRIANGLES);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
/* Render wire frame or solid dodecahedra. If no display list with
|
|
* the current model size exists, create a new display list.
|
|
*/
|
|
void auxWireDodecahedron (GLdouble radius)
|
|
{
|
|
GLdouble *sizeArray;
|
|
GLuint displayList;
|
|
GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
|
|
return;
|
|
*sizeArray = radius;
|
|
displayList = findList (DODECAWIRE, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (DODECAWIRE, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
dodecahedron (center, radius/(GLdouble)1.73, GL_LINE_LOOP);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
void auxSolidDodecahedron (GLdouble radius)
|
|
{
|
|
GLdouble *sizeArray;
|
|
GLuint displayList;
|
|
GLdouble center[3] = {(GLdouble)0.0, (GLdouble)0.0, (GLdouble)0.0};
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 1);
|
|
if (!sizeArray)
|
|
return;
|
|
*sizeArray = radius;
|
|
displayList = findList (DODECASOLID, sizeArray, 1);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (DODECASOLID, sizeArray, 1),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
dodecahedron (center, radius/(GLdouble)1.73, GL_POLYGON);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
/* Render wire frame or solid cones. If no display list with
|
|
* the current model size exists, create a new display list.
|
|
*/
|
|
void auxWireCone (GLdouble base, GLdouble height)
|
|
{
|
|
GLUquadricObj *quadObj;
|
|
GLdouble *sizeArray, *tmp;
|
|
GLuint displayList;
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 2);
|
|
if (!sizeArray)
|
|
return;
|
|
tmp = sizeArray;
|
|
*tmp++ = base;
|
|
*tmp++ = height;
|
|
displayList = findList (CONEWIRE, sizeArray, 2);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (CONEWIRE, sizeArray, 2),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
quadObj = gluNewQuadric ();
|
|
gluQuadricDrawStyle (quadObj, GLU_LINE);
|
|
gluCylinder (quadObj, base, (GLdouble)0.0, height, 15, 10);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
void auxSolidCone (GLdouble base, GLdouble height)
|
|
{
|
|
GLUquadricObj *quadObj;
|
|
GLdouble *sizeArray, *tmp;
|
|
GLuint displayList;
|
|
|
|
sizeArray = (GLdouble *) malloc (sizeof (GLdouble) * 2);
|
|
if (!sizeArray)
|
|
return;
|
|
tmp = sizeArray;
|
|
*tmp++ = base;
|
|
*tmp++ = height;
|
|
displayList = findList (CONEWIRE, sizeArray, 2);
|
|
|
|
if (displayList == 0) {
|
|
glNewList(makeModelPtr (CONEWIRE, sizeArray, 2),
|
|
GL_COMPILE_AND_EXECUTE);
|
|
quadObj = gluNewQuadric ();
|
|
gluQuadricDrawStyle (quadObj, GLU_FILL);
|
|
gluQuadricNormals (quadObj, GLU_SMOOTH);
|
|
gluCylinder (quadObj, base, (GLdouble)0.0, height, 15, 10);
|
|
glEndList();
|
|
}
|
|
else {
|
|
glCallList(displayList);
|
|
free (sizeArray);
|
|
}
|
|
}
|
|
|
|
/* Routines to build 3 dimensional solids, including:
|
|
*
|
|
* drawbox, doughnut, icosahedron,
|
|
* octahedron, tetrahedron, dodecahedron.
|
|
*/
|
|
|
|
/* drawbox:
|
|
*
|
|
* draws a rectangular box with the given x, y, and z ranges.
|
|
* The box is axis-aligned.
|
|
*/
|
|
void drawbox(GLdouble x0, GLdouble x1, GLdouble y0, GLdouble y1,
|
|
GLdouble z0, GLdouble z1, GLenum type)
|
|
{
|
|
static GLdouble n[6][3] = {
|
|
{-1.0, 0.0, 0.0}, {0.0, 1.0, 0.0}, {1.0, 0.0, 0.0},
|
|
{0.0, -1.0, 0.0}, {0.0, 0.0, 1.0}, {0.0, 0.0, -1.0}
|
|
};
|
|
static GLint faces[6][4] = {
|
|
{ 0, 1, 2, 3 }, { 3, 2, 6, 7 }, { 7, 6, 5, 4 },
|
|
{ 4, 5, 1, 0 }, { 5, 6, 2, 1 }, { 7, 4, 0, 3 }
|
|
};
|
|
GLdouble v[8][3], tmp;
|
|
GLint i;
|
|
|
|
if (x0 > x1) {
|
|
tmp = x0; x0 = x1; x1 = tmp;
|
|
}
|
|
if (y0 > y1) {
|
|
tmp = y0; y0 = y1; y1 = tmp;
|
|
}
|
|
if (z0 > z1) {
|
|
tmp = z0; z0 = z1; z1 = tmp;
|
|
}
|
|
v[0][0] = v[1][0] = v[2][0] = v[3][0] = x0;
|
|
v[4][0] = v[5][0] = v[6][0] = v[7][0] = x1;
|
|
v[0][1] = v[1][1] = v[4][1] = v[5][1] = y0;
|
|
v[2][1] = v[3][1] = v[6][1] = v[7][1] = y1;
|
|
v[0][2] = v[3][2] = v[4][2] = v[7][2] = z0;
|
|
v[1][2] = v[2][2] = v[5][2] = v[6][2] = z1;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
glBegin(type);
|
|
glNormal3dv(&n[i][0]);
|
|
glVertex3dv(&v[faces[i][0]][0]);
|
|
glNormal3dv(&n[i][0]);
|
|
glVertex3dv(&v[faces[i][1]][0]);
|
|
glNormal3dv(&n[i][0]);
|
|
glVertex3dv(&v[faces[i][2]][0]);
|
|
glNormal3dv(&n[i][0]);
|
|
glVertex3dv(&v[faces[i][3]][0]);
|
|
glEnd();
|
|
}
|
|
}
|
|
|
|
/* doughnut:
|
|
*
|
|
* draws a doughnut, centered at (0, 0, 0) whose axis is aligned with
|
|
* the z-axis. The doughnut's major radius is R, and minor radius is r.
|
|
*/
|
|
|
|
void doughnut(GLdouble r, GLdouble R, GLint nsides, GLint rings, GLenum type)
|
|
{
|
|
int i, j;
|
|
GLdouble theta, phi, theta1, phi1;
|
|
GLdouble p0[03], p1[3], p2[3], p3[3];
|
|
GLdouble n0[3], n1[3], n2[3], n3[3];
|
|
|
|
for (i = 0; i < rings; i++) {
|
|
theta = (GLdouble)i*(GLdouble)2.0*PI/rings;
|
|
theta1 = (GLdouble)(i+1)*(GLdouble)2.0*PI/rings;
|
|
for (j = 0; j < nsides; j++) {
|
|
phi = (GLdouble)j*(GLdouble)2.0*PI/nsides;
|
|
phi1 = (GLdouble)(j+1)*(GLdouble)2.0*PI/nsides;
|
|
|
|
p0[0] = cos(theta)*(R + r*cos(phi));
|
|
p0[1] = -sin(theta)*(R + r*cos(phi));
|
|
p0[2] = r*sin(phi);
|
|
|
|
p1[0] = cos(theta1)*(R + r*cos(phi));
|
|
p1[1] = -sin(theta1)*(R + r*cos(phi));
|
|
p1[2] = r*sin(phi);
|
|
|
|
p2[0] = cos(theta1)*(R + r*cos(phi1));
|
|
p2[1] = -sin(theta1)*(R + r*cos(phi1));
|
|
p2[2] = r*sin(phi1);
|
|
|
|
p3[0] = cos(theta)*(R + r*cos(phi1));
|
|
p3[1] = -sin(theta)*(R + r*cos(phi1));
|
|
p3[2] = r*sin(phi1);
|
|
|
|
n0[0] = cos(theta)*(cos(phi));
|
|
n0[1] = -sin(theta)*(cos(phi));
|
|
n0[2] = sin(phi);
|
|
|
|
n1[0] = cos(theta1)*(cos(phi));
|
|
n1[1] = -sin(theta1)*(cos(phi));
|
|
n1[2] = sin(phi);
|
|
|
|
n2[0] = cos(theta1)*(cos(phi1));
|
|
n2[1] = -sin(theta1)*(cos(phi1));
|
|
n2[2] = sin(phi1);
|
|
|
|
n3[0] = cos(theta)*(cos(phi1));
|
|
n3[1] = -sin(theta)*(cos(phi1));
|
|
n3[2] = sin(phi1);
|
|
|
|
m_xformpt(p0, p0, n0, n0);
|
|
m_xformpt(p1, p1, n1, n1);
|
|
m_xformpt(p2, p2, n2, n2);
|
|
m_xformpt(p3, p3, n3, n3);
|
|
|
|
glBegin(type);
|
|
glNormal3dv(n3);
|
|
glVertex3dv(p3);
|
|
glNormal3dv(n2);
|
|
glVertex3dv(p2);
|
|
glNormal3dv(n1);
|
|
glVertex3dv(p1);
|
|
glNormal3dv(n0);
|
|
glVertex3dv(p0);
|
|
glEnd();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* octahedron data: The octahedron produced is centered
|
|
* at the origin and has radius 1.0
|
|
*/
|
|
static GLdouble odata[6][3] = {
|
|
{1.0, 0.0, 0.0},
|
|
{-1.0, 0.0, 0.0},
|
|
{0.0, 1.0, 0.0},
|
|
{0.0, -1.0, 0.0},
|
|
{0.0, 0.0, 1.0},
|
|
{0.0, 0.0, -1.0}
|
|
};
|
|
|
|
static int ondex[8][3] = {
|
|
{0, 4, 2}, {1, 2, 4}, {0, 3, 4}, {1, 4, 3},
|
|
{0, 2, 5}, {1, 5, 2}, {0, 5, 3}, {1, 3, 5}
|
|
};
|
|
|
|
/* tetrahedron data: */
|
|
|
|
#define T 1.73205080756887729
|
|
|
|
static GLdouble tdata[4][3] = {
|
|
{T, T, T}, {T, -T, -T}, {-T, T, -T}, {-T, -T, T}
|
|
};
|
|
|
|
static int tndex[4][3] = {
|
|
{0, 1, 3}, {2, 1, 0}, {3, 2, 0}, {1, 2, 3}
|
|
};
|
|
|
|
/* icosahedron data: These numbers are rigged to
|
|
* make an icosahedron of radius 1.0
|
|
*/
|
|
|
|
#define X .525731112119133606
|
|
#define Z .850650808352039932
|
|
|
|
static GLdouble idata[12][3] = {
|
|
{-X, 0, Z},
|
|
{X, 0, Z},
|
|
{-X, 0, -Z},
|
|
{X, 0, -Z},
|
|
{0, Z, X},
|
|
{0, Z, -X},
|
|
{0, -Z, X},
|
|
{0, -Z, -X},
|
|
{Z, X, 0},
|
|
{-Z, X, 0},
|
|
{Z, -X, 0},
|
|
{-Z, -X, 0}
|
|
};
|
|
|
|
static int index[20][3] = {
|
|
{0, 4, 1}, {0, 9, 4},
|
|
{9, 5, 4}, {4, 5, 8},
|
|
{4, 8, 1}, {8, 10, 1},
|
|
{8, 3, 10}, {5, 3, 8},
|
|
{5, 2, 3}, {2, 7, 3},
|
|
{7, 10, 3}, {7, 6, 10},
|
|
{7, 11, 6}, {11, 0, 6},
|
|
{0, 1, 6}, {6, 1, 10},
|
|
{9, 0, 11}, {9, 11, 2},
|
|
{9, 2, 5}, {7, 2, 11},
|
|
};
|
|
|
|
/* icosahedron:
|
|
*
|
|
* Draws an icosahedron with center at p0 having the
|
|
* given radius.
|
|
*/
|
|
|
|
static void icosahedron(GLdouble p0[3], GLdouble radius, GLenum shadeType)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 20; i++)
|
|
drawtriangle(i, 0, 1, p0, radius, shadeType, 0);
|
|
}
|
|
|
|
/* octahedron:
|
|
*
|
|
* Draws an octahedron with center at p0 having the
|
|
* given radius.
|
|
*/
|
|
static void octahedron(GLdouble p0[3], GLdouble radius, GLenum shadeType)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++)
|
|
drawtriangle(i, 1, 1, p0, radius, shadeType, 0);
|
|
}
|
|
|
|
/* tetrahedron:
|
|
*
|
|
* Draws an tetrahedron with center at p0 having the
|
|
* given radius.
|
|
*/
|
|
|
|
static void tetrahedron(GLdouble p0[3], GLdouble radius, GLenum shadeType)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
drawtriangle(i, 2, 1, p0, radius, shadeType, 0);
|
|
}
|
|
|
|
static void subdivide(int depth, GLdouble *v0, GLdouble *v1, GLdouble *v2,
|
|
GLdouble p0[3], GLdouble radius, GLenum shadeType, int avnormal)
|
|
{
|
|
GLdouble w0[3], w1[3], w2[3];
|
|
GLdouble l;
|
|
int i, j, k, n;
|
|
|
|
for (i = 0; i < depth; i++)
|
|
for (j = 0; i + j < depth; j++) {
|
|
k = depth - i - j;
|
|
for (n = 0; n < 3; n++) {
|
|
w0[n] = (i*v0[n] + j*v1[n] + k*v2[n])/depth;
|
|
w1[n] = ((i+1)*v0[n] + j*v1[n] + (k-1)*v2[n])/depth;
|
|
w2[n] = (i*v0[n] + (j+1)*v1[n] + (k-1)*v2[n])/depth;
|
|
}
|
|
l = sqrt(w0[0]*w0[0] + w0[1]*w0[1] + w0[2]*w0[2]);
|
|
w0[0] /= l; w0[1] /= l; w0[2] /= l;
|
|
l = sqrt(w1[0]*w1[0] + w1[1]*w1[1] + w1[2]*w1[2]);
|
|
w1[0] /= l; w1[1] /= l; w1[2] /= l;
|
|
l = sqrt(w2[0]*w2[0] + w2[1]*w2[1] + w2[2]*w2[2]);
|
|
w2[0] /= l; w2[1] /= l; w2[2] /= l;
|
|
recorditem(w1, w0, w2, p0, radius, shadeType, avnormal);
|
|
}
|
|
for (i = 0; i < depth-1; i++)
|
|
for (j = 0; i + j < depth-1; j++) {
|
|
k = depth - i - j;
|
|
for (n = 0; n < 3; n++) {
|
|
w0[n] = ((i+1)*v0[n] + (j+1)*v1[n] + (k-2)*v2[n])/depth;
|
|
w1[n] = ((i+1)*v0[n] + j*v1[n] + (k-1)*v2[n])/depth;
|
|
w2[n] = (i*v0[n] + (j+1)*v1[n] + (k-1)*v2[n])/depth;
|
|
}
|
|
l = sqrt(w0[0]*w0[0] + w0[1]*w0[1] + w0[2]*w0[2]);
|
|
w0[0] /= l; w0[1] /= l; w0[2] /= l;
|
|
l = sqrt(w1[0]*w1[0] + w1[1]*w1[1] + w1[2]*w1[2]);
|
|
w1[0] /= l; w1[1] /= l; w1[2] /= l;
|
|
l = sqrt(w2[0]*w2[0] + w2[1]*w2[1] + w2[2]*w2[2]);
|
|
w2[0] /= l; w2[1] /= l; w2[2] /= l;
|
|
recorditem(w0, w1, w2, p0, radius, shadeType, avnormal);
|
|
}
|
|
}
|
|
|
|
static void drawtriangle(int i, int geomType, int depth,
|
|
GLdouble p0[3], GLdouble radius, GLenum shadeType, int avnormal)
|
|
{
|
|
GLdouble *x0, *x1, *x2;
|
|
|
|
switch (geomType) {
|
|
case 0: /* icosahedron */
|
|
x0 = &idata[index[i][0]][0];
|
|
x1 = &idata[index[i][1]][0];
|
|
x2 = &idata[index[i][2]][0];
|
|
break;
|
|
case 1: /* octahedron */
|
|
x0 = &odata[ondex[i][0]][0];
|
|
x1 = &odata[ondex[i][1]][0];
|
|
x2 = &odata[ondex[i][2]][0];
|
|
break;
|
|
case 2: /* tetrahedron */
|
|
x0 = &tdata[tndex[i][0]][0];
|
|
x1 = &tdata[tndex[i][1]][0];
|
|
x2 = &tdata[tndex[i][2]][0];
|
|
break;
|
|
}
|
|
subdivide(depth, x0, x1, x2, p0, radius, shadeType, avnormal);
|
|
}
|
|
|
|
static void recorditem(GLdouble *n1, GLdouble *n2, GLdouble *n3,
|
|
GLdouble center[3], GLdouble radius, GLenum shadeType, int avnormal)
|
|
{
|
|
GLdouble p1[3], p2[3], p3[3], q0[3], q1[3], n11[3], n22[3], n33[3];
|
|
int i;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
p1[i] = n1[i]*radius + center[i];
|
|
p2[i] = n2[i]*radius + center[i];
|
|
p3[i] = n3[i]*radius + center[i];
|
|
}
|
|
if (avnormal == 0) {
|
|
diff3(p1, p2, q0);
|
|
diff3(p2, p3, q1);
|
|
crossprod(q0, q1, q1);
|
|
normalize(q1);
|
|
m_xformpt(p1, p1, q1, n11);
|
|
m_xformptonly(p2, p2);
|
|
m_xformptonly(p3, p3);
|
|
|
|
glBegin (shadeType);
|
|
glNormal3dv(n11);
|
|
glVertex3dv(p1);
|
|
glVertex3dv(p2);
|
|
glVertex3dv(p3);
|
|
glEnd();
|
|
return;
|
|
}
|
|
m_xformpt(p1, p1, n1, n11);
|
|
m_xformpt(p2, p2, n2, n22);
|
|
m_xformpt(p3, p3, n3, n33);
|
|
|
|
glBegin (shadeType);
|
|
glNormal3dv(n11);
|
|
glVertex3dv(p1);
|
|
glNormal3dv(n22);
|
|
glVertex3dv(p2);
|
|
glNormal3dv(n33);
|
|
glVertex3dv(p3);
|
|
glEnd();
|
|
}
|
|
|
|
static GLdouble dodec[20][3];
|
|
|
|
static void initdodec()
|
|
{
|
|
GLdouble alpha, beta;
|
|
|
|
alpha = sqrt((double)2.0/((double)3.0 + sqrt((double)5.0)));
|
|
beta = (double)1.0 + sqrt((double)6.0/((double)3.0 + sqrt((double)5.0)) - (double)2.0 + (double)2.0*sqrt((double)2.0/((double)3.0 +
|
|
sqrt((double)5.0))));
|
|
dodec[0][0] = -alpha; dodec[0][1] = 0; dodec[0][2] = beta;
|
|
dodec[1][0] = alpha; dodec[1][1] = 0; dodec[1][2] = beta;
|
|
dodec[2][0] = -1; dodec[2][1] = -1; dodec[2][2] = -1;
|
|
dodec[3][0] = -1; dodec[3][1] = -1; dodec[3][2] = 1;
|
|
dodec[4][0] = -1; dodec[4][1] = 1; dodec[4][2] = -1;
|
|
dodec[5][0] = -1; dodec[5][1] = 1; dodec[5][2] = 1;
|
|
dodec[6][0] = 1; dodec[6][1] = -1; dodec[6][2] = -1;
|
|
dodec[7][0] = 1; dodec[7][1] = -1; dodec[7][2] = 1;
|
|
dodec[8][0] = 1; dodec[8][1] = 1; dodec[8][2] = -1;
|
|
dodec[9][0] = 1; dodec[9][1] = 1; dodec[9][2] = 1;
|
|
dodec[10][0] = beta; dodec[10][1] = alpha; dodec[10][2] = 0;
|
|
dodec[11][0] = beta; dodec[11][1] = -alpha; dodec[11][2] = 0;
|
|
dodec[12][0] = -beta; dodec[12][1] = alpha; dodec[12][2] = 0;
|
|
dodec[13][0] = -beta; dodec[13][1] = -alpha; dodec[13][2] = 0;
|
|
dodec[14][0] = -alpha; dodec[14][1] = 0; dodec[14][2] = -beta;
|
|
dodec[15][0] = alpha; dodec[15][1] = 0; dodec[15][2] = -beta;
|
|
dodec[16][0] = 0; dodec[16][1] = beta; dodec[16][2] = alpha;
|
|
dodec[17][0] = 0; dodec[17][1] = beta; dodec[17][2] = -alpha;
|
|
dodec[18][0] = 0; dodec[18][1] = -beta; dodec[18][2] = alpha;
|
|
dodec[19][0] = 0; dodec[19][1] = -beta; dodec[19][2] = -alpha;
|
|
}
|
|
|
|
/* dodecahedron:
|
|
*
|
|
* Draws an dodecahedron with center at 0.0. The radius
|
|
* is sqrt(3).
|
|
*/
|
|
static void dodecahedron(GLdouble center[3], GLdouble sc, GLenum type)
|
|
{
|
|
static int inited = 0;
|
|
|
|
if ( inited == 0) {
|
|
inited = 1;
|
|
initdodec();
|
|
}
|
|
m_pushmatrix();
|
|
m_translate(center[0], center[1], center[2]);
|
|
m_scale(sc, sc, sc);
|
|
pentagon(0, 1, 9, 16, 5, type);
|
|
pentagon(1, 0, 3, 18, 7, type);
|
|
pentagon(1, 7, 11, 10, 9, type);
|
|
pentagon(11, 7, 18, 19, 6, type);
|
|
pentagon(8, 17, 16, 9, 10, type);
|
|
pentagon(2, 14, 15, 6, 19, type);
|
|
pentagon(2, 13, 12, 4, 14, type);
|
|
pentagon(2, 19, 18, 3, 13, type);
|
|
pentagon(3, 0, 5, 12, 13, type);
|
|
pentagon(6, 15, 8, 10, 11, type);
|
|
pentagon(4, 17, 8, 15, 14, type);
|
|
pentagon(4, 12, 5, 16, 17, type);
|
|
m_popmatrix();
|
|
}
|
|
|
|
static void pentagon(int a, int b, int c, int d, int e, GLenum shadeType)
|
|
{
|
|
GLdouble n0[3], d1[3], d2[3], d3[3], d4[3], d5[3], nout[3];
|
|
|
|
diff3(&dodec[a][0], &dodec[b][0], d1);
|
|
diff3(&dodec[b][0], &dodec[c][0], d2);
|
|
crossprod(d1, d2, n0);
|
|
normalize(n0);
|
|
m_xformpt(&dodec[a][0], d1, n0, nout);
|
|
m_xformptonly(&dodec[b][0], d2);
|
|
m_xformptonly(&dodec[c][0], d3);
|
|
m_xformptonly(&dodec[d][0], d4);
|
|
m_xformptonly(&dodec[e][0], d5);
|
|
|
|
glBegin (shadeType);
|
|
glNormal3dv(nout);
|
|
glVertex3dv(d1);
|
|
glVertex3dv(d2);
|
|
glVertex3dv(d3);
|
|
glVertex3dv(d4);
|
|
glVertex3dv(d5);
|
|
glEnd();
|
|
}
|
|
|
|
/* linked lists--display lists for each different
|
|
* type of geometric objects. The linked list is
|
|
* searched, until an object of the requested
|
|
* size is found. If no geometric object of that size
|
|
* has been previously made, a new one is created.
|
|
*/
|
|
GLuint findList (int index, GLdouble *paramArray, int size)
|
|
{
|
|
MODELPTR endList;
|
|
int found = 0;
|
|
|
|
endList = lists[index];
|
|
while (endList != NULL) {
|
|
if (compareParams (endList->params, paramArray, size))
|
|
return (endList->list);
|
|
endList = endList->ptr;
|
|
}
|
|
/* if not found, return 0 and calling routine should
|
|
* make a new list
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
int compareParams (GLdouble *oneArray, GLdouble *twoArray, int size)
|
|
{
|
|
int i;
|
|
int matches = 1;
|
|
|
|
for (i = 0; (i < size) && matches; i++) {
|
|
if (*oneArray++ != *twoArray++)
|
|
matches = 0;
|
|
}
|
|
return (matches);
|
|
}
|
|
|
|
GLuint makeModelPtr (int index, GLdouble *sizeArray, int count)
|
|
{
|
|
MODELPTR newModel;
|
|
|
|
newModel = (MODELPTR) malloc (sizeof (MODEL));
|
|
if (!newModel)
|
|
return 0;
|
|
newModel->list = glGenLists (1);
|
|
newModel->numParam = count;
|
|
newModel->params = sizeArray;
|
|
newModel->ptr = lists[index];
|
|
lists[index] = newModel;
|
|
|
|
return (newModel->list);
|
|
}
|