611 lines
14 KiB
C
611 lines
14 KiB
C
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/* Copyright (c) Mark J. Kilgard, 1994, 1997. */
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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
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for any purpose and without fee is hereby granted, provided
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that the above copyright notice appear in all copies and that
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both the copyright notice and this permission notice appear in
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supporting documentation, and that the name of Silicon
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Graphics, Inc. not be used in advertising or publicity
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pertaining to distribution of the software without specific,
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written prior permission.
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THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
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"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
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OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO
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EVENT SHALL SILICON GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE
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ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
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CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
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INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
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SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
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NOT SILICON GRAPHICS, INC. HAS BEEN ADVISED OF THE POSSIBILITY
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OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
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PERFORMANCE OF THIS SOFTWARE.
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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
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Software clause at DFARS 252.227-7013 and/or in similar or
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successor clauses in the FAR or the DOD or NASA FAR
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Supplement. Unpublished-- rights reserved under the copyright
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laws of the United States. Contractor/manufacturer is Silicon
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Graphics, Inc., 2011 N. Shoreline Blvd., Mountain View, CA
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94039-7311.
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OpenGL(TM) is a trademark of Silicon Graphics, Inc.
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*/
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#include <math.h>
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#include "gluos.h"
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#include "gluint.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 "glutint.h"
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#define GLUTAPIENTRY
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/* Some <math.h> files do not define M_PI... */
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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static GLUquadricObj *quadObj;
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#define QUAD_OBJ_INIT() { if(!quadObj) initQuadObj(); }
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static void
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initQuadObj(void)
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{
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quadObj = gluNewQuadric();
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if (!quadObj)
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{
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printf("%s: out of memory.\n", __FUNCTION__);
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abort();
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};
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// __glutFatalError("out of memory.");
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}
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/* CENTRY */
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void GLUTAPIENTRY
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glutWireSphere(GLdouble radius, GLint slices, GLint stacks)
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{
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QUAD_OBJ_INIT();
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gluQuadricDrawStyle(quadObj, GLU_LINE);
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gluQuadricNormals(quadObj, GLU_SMOOTH);
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/* If we ever changed/used the texture or orientation state
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of quadObj, we'd need to change it to the defaults here
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with gluQuadricTexture and/or gluQuadricOrientation. */
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gluSphere(quadObj, radius, slices, stacks);
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}
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void GLUTAPIENTRY
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glutSolidSphere(GLdouble radius, GLint slices, GLint stacks)
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{
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QUAD_OBJ_INIT();
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gluQuadricDrawStyle(quadObj, GLU_FILL);
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gluQuadricNormals(quadObj, GLU_SMOOTH);
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/* If we ever changed/used the texture or orientation state
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of quadObj, we'd need to change it to the defaults here
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with gluQuadricTexture and/or gluQuadricOrientation. */
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gluSphere(quadObj, radius, slices, stacks);
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}
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void GLUTAPIENTRY
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glutWireCone(GLdouble base, GLdouble height,
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GLint slices, GLint stacks)
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{
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QUAD_OBJ_INIT();
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gluQuadricDrawStyle(quadObj, GLU_LINE);
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gluQuadricNormals(quadObj, GLU_SMOOTH);
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/* If we ever changed/used the texture or orientation state
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of quadObj, we'd need to change it to the defaults here
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with gluQuadricTexture and/or gluQuadricOrientation. */
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gluCylinder(quadObj, base, 0.0, height, slices, stacks);
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}
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void GLUTAPIENTRY
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glutSolidCone(GLdouble base, GLdouble height,
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GLint slices, GLint stacks)
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{
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QUAD_OBJ_INIT();
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gluQuadricDrawStyle(quadObj, GLU_FILL);
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gluQuadricNormals(quadObj, GLU_SMOOTH);
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/* If we ever changed/used the texture or orientation state
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of quadObj, we'd need to change it to the defaults here
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with gluQuadricTexture and/or gluQuadricOrientation. */
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gluCylinder(quadObj, base, 0.0, height, slices, stacks);
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}
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/* ENDCENTRY */
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static void
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drawBox(GLfloat size, GLenum type)
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{
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static GLfloat n[6][3] =
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{
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{-1.0, 0.0, 0.0},
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{0.0, 1.0, 0.0},
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{1.0, 0.0, 0.0},
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{0.0, -1.0, 0.0},
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{0.0, 0.0, 1.0},
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{0.0, 0.0, -1.0}
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};
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static GLint faces[6][4] =
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{
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{0, 1, 2, 3},
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{3, 2, 6, 7},
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{7, 6, 5, 4},
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{4, 5, 1, 0},
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{5, 6, 2, 1},
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{7, 4, 0, 3}
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};
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GLfloat v[8][3];
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GLint i;
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v[0][0] = v[1][0] = v[2][0] = v[3][0] = -size / 2;
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v[4][0] = v[5][0] = v[6][0] = v[7][0] = size / 2;
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v[0][1] = v[1][1] = v[4][1] = v[5][1] = -size / 2;
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v[2][1] = v[3][1] = v[6][1] = v[7][1] = size / 2;
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v[0][2] = v[3][2] = v[4][2] = v[7][2] = -size / 2;
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v[1][2] = v[2][2] = v[5][2] = v[6][2] = size / 2;
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for (i = 5; i >= 0; i--) {
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glBegin(type);
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glNormal3fv(&n[i][0]);
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glVertex3fv(&v[faces[i][0]][0]);
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glVertex3fv(&v[faces[i][1]][0]);
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glVertex3fv(&v[faces[i][2]][0]);
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glVertex3fv(&v[faces[i][3]][0]);
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glEnd();
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}
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}
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/* CENTRY */
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void GLUTAPIENTRY
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glutWireCube(GLdouble size)
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{
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drawBox(size, GL_LINE_LOOP);
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}
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void GLUTAPIENTRY
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glutSolidCube(GLdouble size)
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{
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drawBox(size, GL_QUADS);
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}
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/* ENDCENTRY */
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static void
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doughnut(GLfloat r, GLfloat R, GLint nsides, GLint rings)
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{
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int i, j;
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GLfloat theta, phi, theta1;
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GLfloat cosTheta, sinTheta;
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GLfloat cosTheta1, sinTheta1;
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GLfloat ringDelta, sideDelta;
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ringDelta = 2.0 * M_PI / rings;
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sideDelta = 2.0 * M_PI / nsides;
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theta = 0.0;
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cosTheta = 1.0;
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sinTheta = 0.0;
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for (i = rings - 1; i >= 0; i--) {
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theta1 = theta + ringDelta;
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cosTheta1 = cos(theta1);
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sinTheta1 = sin(theta1);
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glBegin(GL_QUAD_STRIP);
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phi = 0.0;
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for (j = nsides; j >= 0; j--) {
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GLfloat cosPhi, sinPhi, dist;
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phi += sideDelta;
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cosPhi = cos(phi);
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sinPhi = sin(phi);
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dist = R + r * cosPhi;
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glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
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glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
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glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
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glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi);
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}
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glEnd();
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theta = theta1;
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cosTheta = cosTheta1;
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sinTheta = sinTheta1;
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}
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}
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/* CENTRY */
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void GLUTAPIENTRY
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glutWireTorus(GLdouble innerRadius, GLdouble outerRadius,
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GLint nsides, GLint rings)
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{
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glPushAttrib(GL_POLYGON_BIT);
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glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
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doughnut(innerRadius, outerRadius, nsides, rings);
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glPopAttrib();
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}
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void GLUTAPIENTRY
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glutSolidTorus(GLdouble innerRadius, GLdouble outerRadius,
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GLint nsides, GLint rings)
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{
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doughnut(innerRadius, outerRadius, nsides, rings);
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}
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/* ENDCENTRY */
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static GLfloat dodec[20][3];
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static void
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initDodecahedron(void)
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{
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GLfloat alpha, beta;
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alpha = sqrt(2.0 / (3.0 + sqrt(5.0)));
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beta = 1.0 + sqrt(6.0 / (3.0 + sqrt(5.0)) -
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2.0 + 2.0 * sqrt(2.0 / (3.0 + sqrt(5.0))));
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/* *INDENT-OFF* */
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dodec[0][0] = -alpha; dodec[0][1] = 0; dodec[0][2] = beta;
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dodec[1][0] = alpha; dodec[1][1] = 0; dodec[1][2] = beta;
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dodec[2][0] = -1; dodec[2][1] = -1; dodec[2][2] = -1;
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dodec[3][0] = -1; dodec[3][1] = -1; dodec[3][2] = 1;
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dodec[4][0] = -1; dodec[4][1] = 1; dodec[4][2] = -1;
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dodec[5][0] = -1; dodec[5][1] = 1; dodec[5][2] = 1;
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dodec[6][0] = 1; dodec[6][1] = -1; dodec[6][2] = -1;
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dodec[7][0] = 1; dodec[7][1] = -1; dodec[7][2] = 1;
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dodec[8][0] = 1; dodec[8][1] = 1; dodec[8][2] = -1;
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dodec[9][0] = 1; dodec[9][1] = 1; dodec[9][2] = 1;
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dodec[10][0] = beta; dodec[10][1] = alpha; dodec[10][2] = 0;
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dodec[11][0] = beta; dodec[11][1] = -alpha; dodec[11][2] = 0;
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dodec[12][0] = -beta; dodec[12][1] = alpha; dodec[12][2] = 0;
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dodec[13][0] = -beta; dodec[13][1] = -alpha; dodec[13][2] = 0;
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dodec[14][0] = -alpha; dodec[14][1] = 0; dodec[14][2] = -beta;
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dodec[15][0] = alpha; dodec[15][1] = 0; dodec[15][2] = -beta;
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dodec[16][0] = 0; dodec[16][1] = beta; dodec[16][2] = alpha;
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dodec[17][0] = 0; dodec[17][1] = beta; dodec[17][2] = -alpha;
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dodec[18][0] = 0; dodec[18][1] = -beta; dodec[18][2] = alpha;
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dodec[19][0] = 0; dodec[19][1] = -beta; dodec[19][2] = -alpha;
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/* *INDENT-ON* */
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}
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#define DIFF3(_a,_b,_c) { \
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(_c)[0] = (_a)[0] - (_b)[0]; \
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(_c)[1] = (_a)[1] - (_b)[1]; \
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(_c)[2] = (_a)[2] - (_b)[2]; \
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}
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static void
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crossprod(GLfloat v1[3], GLfloat v2[3], GLfloat prod[3])
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{
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GLfloat p[3]; /* in case prod == v1 or v2 */
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p[0] = v1[1] * v2[2] - v2[1] * v1[2];
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p[1] = v1[2] * v2[0] - v2[2] * v1[0];
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p[2] = v1[0] * v2[1] - v2[0] * v1[1];
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prod[0] = p[0];
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prod[1] = p[1];
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prod[2] = p[2];
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}
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static void
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normalize(GLfloat v[3])
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{
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GLfloat d;
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d = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
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if (d == 0.0) {
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// __glutWarning("normalize: zero length vector");
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v[0] = d = 1.0;
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}
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d = 1 / d;
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v[0] *= d;
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v[1] *= d;
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v[2] *= d;
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}
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static void
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pentagon(int a, int b, int c, int d, int e, GLenum shadeType)
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{
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GLfloat n0[3], d1[3], d2[3];
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DIFF3(dodec[a], dodec[b], d1);
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DIFF3(dodec[b], dodec[c], d2);
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crossprod(d1, d2, n0);
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normalize(n0);
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glBegin(shadeType);
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glNormal3fv(n0);
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glVertex3fv(&dodec[a][0]);
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glVertex3fv(&dodec[b][0]);
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glVertex3fv(&dodec[c][0]);
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glVertex3fv(&dodec[d][0]);
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glVertex3fv(&dodec[e][0]);
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glEnd();
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}
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static void
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dodecahedron(GLenum type)
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{
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static int inited = 0;
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if (inited == 0) {
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inited = 1;
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initDodecahedron();
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}
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pentagon(0, 1, 9, 16, 5, type);
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pentagon(1, 0, 3, 18, 7, type);
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pentagon(1, 7, 11, 10, 9, type);
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pentagon(11, 7, 18, 19, 6, type);
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pentagon(8, 17, 16, 9, 10, type);
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pentagon(2, 14, 15, 6, 19, type);
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pentagon(2, 13, 12, 4, 14, type);
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pentagon(2, 19, 18, 3, 13, type);
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pentagon(3, 0, 5, 12, 13, type);
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pentagon(6, 15, 8, 10, 11, type);
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pentagon(4, 17, 8, 15, 14, type);
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pentagon(4, 12, 5, 16, 17, type);
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}
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/* CENTRY */
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void GLUTAPIENTRY
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glutWireDodecahedron(void)
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{
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dodecahedron(GL_LINE_LOOP);
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}
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void GLUTAPIENTRY
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glutSolidDodecahedron(void)
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{
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dodecahedron(GL_TRIANGLE_FAN);
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}
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/* ENDCENTRY */
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static void
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recorditem(GLfloat * n1, GLfloat * n2, GLfloat * n3,
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GLenum shadeType)
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{
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GLfloat q0[3], q1[3];
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DIFF3(n1, n2, q0);
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DIFF3(n2, n3, q1);
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crossprod(q0, q1, q1);
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normalize(q1);
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glBegin(shadeType);
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glNormal3fv(q1);
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glVertex3fv(n1);
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glVertex3fv(n2);
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glVertex3fv(n3);
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glEnd();
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}
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static void
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subdivide(GLfloat * v0, GLfloat * v1, GLfloat * v2,
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GLenum shadeType)
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{
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int depth;
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GLfloat w0[3], w1[3], w2[3];
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GLfloat l;
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int i, j, k, n;
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depth = 1;
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for (i = 0; i < depth; i++) {
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for (j = 0; i + j < depth; j++) {
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k = depth - i - j;
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for (n = 0; n < 3; n++) {
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w0[n] = (i * v0[n] + j * v1[n] + k * v2[n]) / depth;
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w1[n] = ((i + 1) * v0[n] + j * v1[n] + (k - 1) * v2[n])
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/ depth;
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w2[n] = (i * v0[n] + (j + 1) * v1[n] + (k - 1) * v2[n])
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/ depth;
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}
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l = sqrt(w0[0] * w0[0] + w0[1] * w0[1] + w0[2] * w0[2]);
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w0[0] /= l;
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w0[1] /= l;
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w0[2] /= l;
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l = sqrt(w1[0] * w1[0] + w1[1] * w1[1] + w1[2] * w1[2]);
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w1[0] /= l;
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w1[1] /= l;
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w1[2] /= l;
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l = sqrt(w2[0] * w2[0] + w2[1] * w2[1] + w2[2] * w2[2]);
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w2[0] /= l;
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w2[1] /= l;
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w2[2] /= l;
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recorditem(w1, w0, w2, shadeType);
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}
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}
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}
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static void
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drawtriangle(int i, GLfloat data[][3], int ndx[][3],
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GLenum shadeType)
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{
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GLfloat *x0, *x1, *x2;
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x0 = data[ndx[i][0]];
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x1 = data[ndx[i][1]];
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x2 = data[ndx[i][2]];
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subdivide(x0, x1, x2, shadeType);
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}
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/* octahedron data: The octahedron produced is centered at the
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origin and has radius 1.0 */
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static GLfloat odata[6][3] =
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{
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{1.0, 0.0, 0.0},
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{-1.0, 0.0, 0.0},
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{0.0, 1.0, 0.0},
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{0.0, -1.0, 0.0},
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{0.0, 0.0, 1.0},
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{0.0, 0.0, -1.0}
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};
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static int ondex[8][3] =
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{
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{0, 4, 2},
|
|
{1, 2, 4},
|
|
{0, 3, 4},
|
|
{1, 4, 3},
|
|
{0, 2, 5},
|
|
{1, 5, 2},
|
|
{0, 5, 3},
|
|
{1, 3, 5}
|
|
};
|
|
|
|
static void
|
|
octahedron(GLenum shadeType)
|
|
{
|
|
int i;
|
|
|
|
for (i = 7; i >= 0; i--) {
|
|
drawtriangle(i, odata, ondex, shadeType);
|
|
}
|
|
}
|
|
|
|
/* CENTRY */
|
|
void GLUTAPIENTRY
|
|
glutWireOctahedron(void)
|
|
{
|
|
octahedron(GL_LINE_LOOP);
|
|
}
|
|
|
|
void GLUTAPIENTRY
|
|
glutSolidOctahedron(void)
|
|
{
|
|
octahedron(GL_TRIANGLES);
|
|
}
|
|
|
|
/* ENDCENTRY */
|
|
|
|
/* icosahedron data: These numbers are rigged to make an
|
|
icosahedron of radius 1.0 */
|
|
|
|
#define X .525731112119133606
|
|
#define Z .850650808352039932
|
|
|
|
static GLfloat 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},
|
|
};
|
|
|
|
static void
|
|
icosahedron(GLenum shadeType)
|
|
{
|
|
int i;
|
|
|
|
for (i = 19; i >= 0; i--) {
|
|
drawtriangle(i, idata, index, shadeType);
|
|
}
|
|
}
|
|
|
|
/* CENTRY */
|
|
void GLUTAPIENTRY
|
|
glutWireIcosahedron(void)
|
|
{
|
|
icosahedron(GL_LINE_LOOP);
|
|
}
|
|
|
|
void GLUTAPIENTRY
|
|
glutSolidIcosahedron(void)
|
|
{
|
|
icosahedron(GL_TRIANGLES);
|
|
}
|
|
|
|
/* ENDCENTRY */
|
|
|
|
/* tetrahedron data: */
|
|
|
|
#define T 1.73205080756887729
|
|
|
|
static GLfloat 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}
|
|
};
|
|
|
|
static void
|
|
tetrahedron(GLenum shadeType)
|
|
{
|
|
int i;
|
|
|
|
for (i = 3; i >= 0; i--)
|
|
drawtriangle(i, tdata, tndex, shadeType);
|
|
}
|
|
|
|
/* CENTRY */
|
|
void GLUTAPIENTRY
|
|
glutWireTetrahedron(void)
|
|
{
|
|
tetrahedron(GL_LINE_LOOP);
|
|
}
|
|
|
|
void GLUTAPIENTRY
|
|
glutSolidTetrahedron(void)
|
|
{
|
|
tetrahedron(GL_TRIANGLES);
|
|
}
|
|
|
|
/* ENDCENTRY */
|