From a6163888f3c56123b1db313743c6147ba498732c Mon Sep 17 00:00:00 2001
From: Yuval Adam <yuv.adm@gmail.com>
Date: Fri, 8 Aug 2014 14:42:07 +0300
Subject: Add third_party libs

---
 .../windows/fltk-1.1.10/src/freeglut_geometry.cxx  | 1110 ++++++++++++++++++++
 1 file changed, 1110 insertions(+)
 create mode 100644 third_party/windows/fltk-1.1.10/src/freeglut_geometry.cxx

(limited to 'third_party/windows/fltk-1.1.10/src/freeglut_geometry.cxx')

diff --git a/third_party/windows/fltk-1.1.10/src/freeglut_geometry.cxx b/third_party/windows/fltk-1.1.10/src/freeglut_geometry.cxx
new file mode 100644
index 0000000..91bd9e3
--- /dev/null
+++ b/third_party/windows/fltk-1.1.10/src/freeglut_geometry.cxx
@@ -0,0 +1,1110 @@
+/*
+ * freeglut_geometry.c
+ *
+ * Freeglut geometry rendering methods.
+ *
+ * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
+ * Written by Pawel W. Olszta, <olszta@sourceforge.net>
+ * Creation date: Fri Dec 3 1999
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <FL/glut.H>
+#include <FL/math.h>
+#include <stdlib.h>
+
+/*
+ * TODO BEFORE THE STABLE RELEASE:
+ *
+ * Following functions have been contributed by Andreas Umbach.
+ *
+ *      glutWireCube()          -- looks OK
+ *      glutSolidCube()         -- OK
+ *
+ * Those functions have been implemented by John Fay.
+ *
+ *      glutWireTorus()         -- looks OK
+ *      glutSolidTorus()        -- looks OK
+ *      glutWireDodecahedron()  -- looks OK
+ *      glutSolidDodecahedron() -- looks OK
+ *      glutWireOctahedron()    -- looks OK
+ *      glutSolidOctahedron()   -- looks OK
+ *      glutWireTetrahedron()   -- looks OK
+ *      glutSolidTetrahedron()  -- looks OK
+ *      glutWireIcosahedron()   -- looks OK
+ *      glutSolidIcosahedron()  -- looks OK
+ *
+ *  The Following functions have been updated by Nigel Stewart, based
+ *  on FreeGLUT 2.0.0 implementations:
+ *
+ *      glutWireSphere()        -- looks OK
+ *      glutSolidSphere()       -- looks OK
+ *      glutWireCone()          -- looks OK
+ *      glutSolidCone()         -- looks OK
+ */
+
+
+/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
+
+/*
+ * Draws a wireframed cube. Code contributed by Andreas Umbach <marvin@dataway.ch>
+ */
+void glutWireCube( GLdouble dSize )
+{
+    double size = dSize * 0.5;
+
+#   define V(a,b,c) glVertex3d( a size, b size, c size );
+#   define N(a,b,c) glNormal3d( a, b, c );
+
+    /* PWO: I dared to convert the code to use macros... */
+    glBegin( GL_LINE_LOOP ); N( 1.0, 0.0, 0.0); V(+,-,+); V(+,-,-); V(+,+,-); V(+,+,+); glEnd();
+    glBegin( GL_LINE_LOOP ); N( 0.0, 1.0, 0.0); V(+,+,+); V(+,+,-); V(-,+,-); V(-,+,+); glEnd();
+    glBegin( GL_LINE_LOOP ); N( 0.0, 0.0, 1.0); V(+,+,+); V(-,+,+); V(-,-,+); V(+,-,+); glEnd();
+    glBegin( GL_LINE_LOOP ); N(-1.0, 0.0, 0.0); V(-,-,+); V(-,+,+); V(-,+,-); V(-,-,-); glEnd();
+    glBegin( GL_LINE_LOOP ); N( 0.0,-1.0, 0.0); V(-,-,+); V(-,-,-); V(+,-,-); V(+,-,+); glEnd();
+    glBegin( GL_LINE_LOOP ); N( 0.0, 0.0,-1.0); V(-,-,-); V(-,+,-); V(+,+,-); V(+,-,-); glEnd();
+
+#   undef V
+#   undef N
+}
+
+/*
+ * Draws a solid cube. Code contributed by Andreas Umbach <marvin@dataway.ch>
+ */
+void glutSolidCube( GLdouble dSize )
+{
+    double size = dSize * 0.5;
+
+#   define V(a,b,c) glVertex3d( a size, b size, c size );
+#   define N(a,b,c) glNormal3d( a, b, c );
+
+    /* PWO: Again, I dared to convert the code to use macros... */
+    glBegin( GL_QUADS );
+        N( 1.0, 0.0, 0.0); V(+,-,+); V(+,-,-); V(+,+,-); V(+,+,+);
+        N( 0.0, 1.0, 0.0); V(+,+,+); V(+,+,-); V(-,+,-); V(-,+,+);
+        N( 0.0, 0.0, 1.0); V(+,+,+); V(-,+,+); V(-,-,+); V(+,-,+);
+        N(-1.0, 0.0, 0.0); V(-,-,+); V(-,+,+); V(-,+,-); V(-,-,-);
+        N( 0.0,-1.0, 0.0); V(-,-,+); V(-,-,-); V(+,-,-); V(+,-,+);
+        N( 0.0, 0.0,-1.0); V(-,-,-); V(-,+,-); V(+,+,-); V(+,-,-);
+    glEnd();
+
+#   undef V
+#   undef N
+}
+
+/*
+ * Compute lookup table of cos and sin values forming a cirle
+ *
+ * Notes:
+ *    It is the responsibility of the caller to free these tables
+ *    The size of the table is (n+1) to form a connected loop
+ *    The last entry is exactly the same as the first
+ *    The sign of n can be flipped to get the reverse loop
+ */
+
+static void fghCircleTable(double **sint,double **cost,const int n)
+{
+    int i;
+
+    /* Table size, the sign of n flips the circle direction */
+
+    const int size = abs(n);
+
+    /* Determine the angle between samples */
+
+    const double angle = 2*M_PI/(double)( ( n == 0 ) ? 1 : n );
+
+    /* Allocate memory for n samples, plus duplicate of first entry at the end */
+
+    *sint = (double *) calloc(sizeof(double), size+1);
+    *cost = (double *) calloc(sizeof(double), size+1);
+
+    /* Bail out if memory allocation fails, fgError never returns */
+
+    if (!(*sint) || !(*cost))
+    {
+      if (*sint) free(*sint);
+      if (*cost) free(*cost);
+      return;
+    }
+
+    /* Compute cos and sin around the circle */
+
+    (*sint)[0] = 0.0;
+    (*cost)[0] = 1.0;
+
+    for (i=1; i<size; i++)
+    {
+        (*sint)[i] = sin(angle*i);
+        (*cost)[i] = cos(angle*i);
+    }
+
+    /* Last sample is duplicate of the first */
+
+    (*sint)[size] = (*sint)[0];
+    (*cost)[size] = (*cost)[0];
+}
+
+/*
+ * Draws a solid sphere
+ */
+void glutSolidSphere(GLdouble radius, GLint slices, GLint stacks)
+{
+    int i,j;
+
+    /* Adjust z and radius as stacks are drawn. */
+
+    double z0,z1;
+    double r0,r1;
+
+    /* Pre-computed circle */
+
+    double *sint1,*cost1;
+    double *sint2,*cost2;
+
+    fghCircleTable(&sint1,&cost1,-slices);
+    fghCircleTable(&sint2,&cost2,stacks*2);
+
+    /* The top stack is covered with a triangle fan */
+
+    z0 = 1.0;
+    z1 = cost2[(stacks>0)?1:0];
+    r0 = 0.0;
+    r1 = sint2[(stacks>0)?1:0];
+
+    glBegin(GL_TRIANGLE_FAN);
+
+        glNormal3d(0,0,1);
+        glVertex3d(0,0,radius);
+
+        for (j=slices; j>=0; j--)
+        {
+            glNormal3d(cost1[j]*r1,        sint1[j]*r1,        z1       );
+            glVertex3d(cost1[j]*r1*radius, sint1[j]*r1*radius, z1*radius);
+        }
+
+    glEnd();
+
+    /* Cover each stack with a quad strip, except the top and bottom stacks */
+
+    for( i=1; i<stacks-1; i++ )
+    {
+        z0 = z1; z1 = cost2[i+1];
+        r0 = r1; r1 = sint2[i+1];
+
+        glBegin(GL_QUAD_STRIP);
+
+            for(j=0; j<=slices; j++)
+            {
+                glNormal3d(cost1[j]*r1,        sint1[j]*r1,        z1       );
+                glVertex3d(cost1[j]*r1*radius, sint1[j]*r1*radius, z1*radius);
+                glNormal3d(cost1[j]*r0,        sint1[j]*r0,        z0       );
+                glVertex3d(cost1[j]*r0*radius, sint1[j]*r0*radius, z0*radius);
+            }
+
+        glEnd();
+    }
+
+    /* The bottom stack is covered with a triangle fan */
+
+    z0 = z1;
+    r0 = r1;
+
+    glBegin(GL_TRIANGLE_FAN);
+
+        glNormal3d(0,0,-1);
+        glVertex3d(0,0,-radius);
+
+        for (j=0; j<=slices; j++)
+        {
+            glNormal3d(cost1[j]*r0,        sint1[j]*r0,        z0       );
+            glVertex3d(cost1[j]*r0*radius, sint1[j]*r0*radius, z0*radius);
+        }
+
+    glEnd();
+
+    /* Release sin and cos tables */
+
+    free(sint1);
+    free(cost1);
+    free(sint2);
+    free(cost2);
+}
+
+/*
+ * Draws a wire sphere
+ */
+void glutWireSphere(GLdouble radius, GLint slices, GLint stacks)
+{
+    int i,j;
+
+    /* Adjust z and radius as stacks and slices are drawn. */
+
+    double r;
+    double x,y,z;
+
+    /* Pre-computed circle */
+
+    double *sint1,*cost1;
+    double *sint2,*cost2;
+
+    fghCircleTable(&sint1,&cost1,-slices  );
+    fghCircleTable(&sint2,&cost2, stacks*2);
+
+    /* Draw a line loop for each stack */
+
+    for (i=1; i<stacks; i++)
+    {
+        z = cost2[i];
+        r = sint2[i];
+
+        glBegin(GL_LINE_LOOP);
+
+            for(j=0; j<=slices; j++)
+            {
+                x = cost1[j];
+                y = sint1[j];
+
+                glNormal3d(x,y,z);
+                glVertex3d(x*r*radius,y*r*radius,z*radius);
+            }
+
+        glEnd();
+    }
+
+    /* Draw a line loop for each slice */
+
+    for (i=0; i<slices; i++)
+    {
+        glBegin(GL_LINE_STRIP);
+
+            for(j=0; j<=stacks; j++)
+            {
+                x = cost1[i]*sint2[j];
+                y = sint1[i]*sint2[j];
+                z = cost2[j];
+
+                glNormal3d(x,y,z);
+                glVertex3d(x*radius,y*radius,z*radius);
+            }
+
+        glEnd();
+    }
+
+    /* Release sin and cos tables */
+
+    free(sint1);
+    free(cost1);
+    free(sint2);
+    free(cost2);
+}
+
+/*
+ * Draws a solid cone
+ */
+void glutSolidCone( GLdouble base, GLdouble height, GLint slices, GLint stacks )
+{
+    int i,j;
+
+    /* Step in z and radius as stacks are drawn. */
+
+    double z0,z1;
+    double r0,r1;
+
+    const double zStep = height / ( ( stacks > 0 ) ? stacks : 1 );
+    const double rStep = base / ( ( stacks > 0 ) ? stacks : 1 );
+
+    /* Scaling factors for vertex normals */
+
+    const double cosn = ( height / sqrt ( height * height + base * base ));
+    const double sinn = ( base   / sqrt ( height * height + base * base ));
+
+    /* Pre-computed circle */
+
+    double *sint,*cost;
+
+    fghCircleTable(&sint,&cost,-slices);
+
+    /* Cover the circular base with a triangle fan... */
+
+    z0 = 0.0;
+    z1 = zStep;
+
+    r0 = base;
+    r1 = r0 - rStep;
+
+    glBegin(GL_TRIANGLE_FAN);
+
+        glNormal3d(0.0,0.0,-1.0);
+        glVertex3d(0.0,0.0, z0 );
+
+        for (j=0; j<=slices; j++)
+            glVertex3d(cost[j]*r0, sint[j]*r0, z0);
+
+    glEnd();
+
+    /* Cover each stack with a quad strip, except the top stack */
+
+    for( i=0; i<stacks-1; i++ )
+    {
+        glBegin(GL_QUAD_STRIP);
+
+            for(j=0; j<=slices; j++)
+            {
+                glNormal3d(cost[j]*sinn, sint[j]*sinn, cosn);
+                glVertex3d(cost[j]*r0,   sint[j]*r0,   z0  );
+                glVertex3d(cost[j]*r1,   sint[j]*r1,   z1  );
+            }
+
+            z0 = z1; z1 += zStep;
+            r0 = r1; r1 -= rStep;
+
+        glEnd();
+    }
+
+    /* The top stack is covered with individual triangles */
+
+    glBegin(GL_TRIANGLES);
+
+        glNormal3d(cost[0]*sinn, sint[0]*sinn, cosn);
+
+        for (j=0; j<slices; j++)
+        {
+            glVertex3d(cost[j+0]*r0,   sint[j+0]*r0,   z0    );
+            glVertex3d(0,              0,              height);
+            glNormal3d(cost[j+1]*sinn, sint[j+1]*sinn, cosn  );
+            glVertex3d(cost[j+1]*r0,   sint[j+1]*r0,   z0    );
+        }
+
+    glEnd();
+
+    /* Release sin and cos tables */
+
+    free(sint);
+    free(cost);
+}
+
+/*
+ * Draws a wire cone
+ */
+void glutWireCone( GLdouble base, GLdouble height, GLint slices, GLint stacks)
+{
+    int i,j;
+
+    /* Step in z and radius as stacks are drawn. */
+
+    double z = 0.0;
+    double r = base;
+
+    const double zStep = height / ( ( stacks > 0 ) ? stacks : 1 );
+    const double rStep = base / ( ( stacks > 0 ) ? stacks : 1 );
+
+    /* Scaling factors for vertex normals */
+
+    const double cosn = ( height / sqrt ( height * height + base * base ));
+    const double sinn = ( base   / sqrt ( height * height + base * base ));
+
+    /* Pre-computed circle */
+
+    double *sint,*cost;
+
+    fghCircleTable(&sint,&cost,-slices);
+
+    /* Draw the stacks... */
+
+    for (i=0; i<stacks; i++)
+    {
+        glBegin(GL_LINE_LOOP);
+
+            for( j=0; j<slices; j++ )
+            {
+                glNormal3d(cost[j]*sinn, sint[j]*sinn, cosn);
+                glVertex3d(cost[j]*r,    sint[j]*r,    z   );
+            }
+
+        glEnd();
+
+        z += zStep;
+        r -= rStep;
+    }
+
+    /* Draw the slices */
+
+    r = base;
+
+    glBegin(GL_LINES);
+
+        for (j=0; j<slices; j++)
+        {
+            glNormal3d(cost[j]*sinn, sint[j]*sinn, cosn  );
+            glVertex3d(cost[j]*r,    sint[j]*r,    0.0   );
+            glVertex3d(0.0,          0.0,          height);
+        }
+
+    glEnd();
+
+    /* Release sin and cos tables */
+
+    free(sint);
+    free(cost);
+}
+
+
+/*
+ * Draws a solid cylinder
+ */
+void glutSolidCylinder(GLdouble radius, GLdouble height, GLint slices, GLint stacks)
+{
+    int i,j;
+
+    /* Step in z and radius as stacks are drawn. */
+
+    double z0,z1;
+    const double zStep = height / ( ( stacks > 0 ) ? stacks : 1 );
+
+    /* Pre-computed circle */
+
+    double *sint,*cost;
+
+    fghCircleTable(&sint,&cost,-slices);
+
+    /* Cover the base and top */
+
+    glBegin(GL_TRIANGLE_FAN);
+        glNormal3d(0.0, 0.0, -1.0 );
+        glVertex3d(0.0, 0.0,  0.0 );
+        for (j=0; j<=slices; j++)
+          glVertex3d(cost[j]*radius, sint[j]*radius, 0.0);
+    glEnd();
+
+    glBegin(GL_TRIANGLE_FAN);
+        glNormal3d(0.0, 0.0, 1.0   );
+        glVertex3d(0.0, 0.0, height);
+        for (j=slices; j>=0; j--)
+          glVertex3d(cost[j]*radius, sint[j]*radius, height);
+    glEnd();
+
+    /* Do the stacks */
+
+    z0 = 0.0;
+    z1 = zStep;
+
+    for (i=1; i<=stacks; i++)
+    {
+        if (i==stacks)
+            z1 = height;
+
+        glBegin(GL_QUAD_STRIP);
+            for (j=0; j<=slices; j++ )
+            {
+                glNormal3d(cost[j],        sint[j],        0.0 );
+                glVertex3d(cost[j]*radius, sint[j]*radius, z0  );
+                glVertex3d(cost[j]*radius, sint[j]*radius, z1  );
+            }
+        glEnd();
+
+        z0 = z1; z1 += zStep;
+    }
+
+    /* Release sin and cos tables */
+
+    free(sint);
+    free(cost);
+}
+
+/*
+ * Draws a wire cylinder
+ */
+void glutWireCylinder(GLdouble radius, GLdouble height, GLint slices, GLint stacks)
+{
+    int i,j;
+
+    /* Step in z and radius as stacks are drawn. */
+
+          double z = 0.0;
+    const double zStep = height / ( ( stacks > 0 ) ? stacks : 1 );
+
+    /* Pre-computed circle */
+
+    double *sint,*cost;
+
+    fghCircleTable(&sint,&cost,-slices);
+
+    /* Draw the stacks... */
+
+    for (i=0; i<=stacks; i++)
+    {
+        if (i==stacks)
+            z = height;
+
+        glBegin(GL_LINE_LOOP);
+
+            for( j=0; j<slices; j++ )
+            {
+                glNormal3d(cost[j],        sint[j],        0.0);
+                glVertex3d(cost[j]*radius, sint[j]*radius, z  );
+            }
+
+        glEnd();
+
+        z += zStep;
+    }
+
+    /* Draw the slices */
+
+    glBegin(GL_LINES);
+
+        for (j=0; j<slices; j++)
+        {
+            glNormal3d(cost[j],        sint[j],        0.0   );
+            glVertex3d(cost[j]*radius, sint[j]*radius, 0.0   );
+            glVertex3d(cost[j]*radius, sint[j]*radius, height);
+        }
+
+    glEnd();
+
+    /* Release sin and cos tables */
+
+    free(sint);
+    free(cost);
+}
+
+/*
+ * Draws a wire torus
+ */
+void glutWireTorus( GLdouble dInnerRadius, GLdouble dOuterRadius, GLint nSides, GLint nRings )
+{
+  double  iradius = dInnerRadius, oradius = dOuterRadius, phi, psi, dpsi, dphi;
+  double *vertex, *normal;
+  int    i, j;
+  double spsi, cpsi, sphi, cphi ;
+
+  if ( nSides < 1 ) nSides = 1;
+  if ( nRings < 1 ) nRings = 1;
+
+  /* Allocate the vertices array */
+  vertex = (double *)calloc( sizeof(double), 3 * nSides * nRings );
+  normal = (double *)calloc( sizeof(double), 3 * nSides * nRings );
+
+  glPushMatrix();
+
+  dpsi =  2.0 * M_PI / (double)nRings ;
+  dphi = -2.0 * M_PI / (double)nSides ;
+  psi  = 0.0;
+
+  for( j=0; j<nRings; j++ )
+  {
+    cpsi = cos ( psi ) ;
+    spsi = sin ( psi ) ;
+    phi = 0.0;
+
+    for( i=0; i<nSides; i++ )
+    {
+      int offset = 3 * ( j * nSides + i ) ;
+      cphi = cos ( phi ) ;
+      sphi = sin ( phi ) ;
+      *(vertex + offset + 0) = cpsi * ( oradius + cphi * iradius ) ;
+      *(vertex + offset + 1) = spsi * ( oradius + cphi * iradius ) ;
+      *(vertex + offset + 2) =                    sphi * iradius  ;
+      *(normal + offset + 0) = cpsi * cphi ;
+      *(normal + offset + 1) = spsi * cphi ;
+      *(normal + offset + 2) =        sphi ;
+      phi += dphi;
+    }
+
+    psi += dpsi;
+  }
+
+  for( i=0; i<nSides; i++ )
+  {
+    glBegin( GL_LINE_LOOP );
+
+    for( j=0; j<nRings; j++ )
+    {
+      int offset = 3 * ( j * nSides + i ) ;
+      glNormal3dv( normal + offset );
+      glVertex3dv( vertex + offset );
+    }
+
+    glEnd();
+  }
+
+  for( j=0; j<nRings; j++ )
+  {
+    glBegin(GL_LINE_LOOP);
+
+    for( i=0; i<nSides; i++ )
+    {
+      int offset = 3 * ( j * nSides + i ) ;
+      glNormal3dv( normal + offset );
+      glVertex3dv( vertex + offset );
+    }
+
+    glEnd();
+  }
+
+  free ( vertex ) ;
+  free ( normal ) ;
+  glPopMatrix();
+}
+
+/*
+ * Draws a solid torus
+ */
+void glutSolidTorus( GLdouble dInnerRadius, GLdouble dOuterRadius, GLint nSides, GLint nRings )
+{
+  double  iradius = dInnerRadius, oradius = dOuterRadius, phi, psi, dpsi, dphi;
+  double *vertex, *normal;
+  int    i, j;
+  double spsi, cpsi, sphi, cphi ;
+
+  if ( nSides < 1 ) nSides = 1;
+  if ( nRings < 1 ) nRings = 1;
+
+  /* Increment the number of sides and rings to allow for one more point than surface */
+  nSides ++ ;
+  nRings ++ ;
+
+  /* Allocate the vertices array */
+  vertex = (double *)calloc( sizeof(double), 3 * nSides * nRings );
+  normal = (double *)calloc( sizeof(double), 3 * nSides * nRings );
+
+  glPushMatrix();
+
+  dpsi =  2.0 * M_PI / (double)(nRings - 1) ;
+  dphi = -2.0 * M_PI / (double)(nSides - 1) ;
+  psi  = 0.0;
+
+  for( j=0; j<nRings; j++ )
+  {
+    cpsi = cos ( psi ) ;
+    spsi = sin ( psi ) ;
+    phi = 0.0;
+
+    for( i=0; i<nSides; i++ )
+    {
+      int offset = 3 * ( j * nSides + i ) ;
+      cphi = cos ( phi ) ;
+      sphi = sin ( phi ) ;
+      *(vertex + offset + 0) = cpsi * ( oradius + cphi * iradius ) ;
+      *(vertex + offset + 1) = spsi * ( oradius + cphi * iradius ) ;
+      *(vertex + offset + 2) =                    sphi * iradius  ;
+      *(normal + offset + 0) = cpsi * cphi ;
+      *(normal + offset + 1) = spsi * cphi ;
+      *(normal + offset + 2) =        sphi ;
+      phi += dphi;
+    }
+
+    psi += dpsi;
+  }
+
+    glBegin( GL_QUADS );
+  for( i=0; i<nSides-1; i++ )
+  {
+    for( j=0; j<nRings-1; j++ )
+    {
+      int offset = 3 * ( j * nSides + i ) ;
+      glNormal3dv( normal + offset );
+      glVertex3dv( vertex + offset );
+      glNormal3dv( normal + offset + 3 );
+      glVertex3dv( vertex + offset + 3 );
+      glNormal3dv( normal + offset + 3 * nSides + 3 );
+      glVertex3dv( vertex + offset + 3 * nSides + 3 );
+      glNormal3dv( normal + offset + 3 * nSides );
+      glVertex3dv( vertex + offset + 3 * nSides );
+    }
+  }
+
+  glEnd();
+
+  free ( vertex ) ;
+  free ( normal ) ;
+  glPopMatrix();
+}
+
+/*
+ *
+ */
+void glutWireDodecahedron( void )
+{
+  /* Magic Numbers:  It is possible to create a dodecahedron by attaching two pentagons to each face of
+   * of a cube.  The coordinates of the points are:
+   *   (+-x,0, z); (+-1, 1, 1); (0, z, x )
+   * where x = (-1 + sqrt(5))/2, z = (1 + sqrt(5))/2  or
+   *       x = 0.61803398875 and z = 1.61803398875.
+   */
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.0,  0.525731112119,  0.850650808354 ) ; glVertex3d (  0.0,  1.61803398875,  0.61803398875 ) ; glVertex3d ( -1.0,  1.0,  1.0 ) ; glVertex3d ( -0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d (  0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d (  1.0,  1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.0,  0.525731112119, -0.850650808354 ) ; glVertex3d (  0.0,  1.61803398875, -0.61803398875 ) ; glVertex3d (  1.0,  1.0, -1.0 ) ; glVertex3d (  0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d ( -0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d ( -1.0,  1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.0, -0.525731112119,  0.850650808354 ) ; glVertex3d (  0.0, -1.61803398875,  0.61803398875 ) ; glVertex3d (  1.0, -1.0,  1.0 ) ; glVertex3d (  0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d ( -0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d ( -1.0, -1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.0, -0.525731112119, -0.850650808354 ) ; glVertex3d (  0.0, -1.61803398875, -0.61803398875 ) ; glVertex3d ( -1.0, -1.0, -1.0 ) ; glVertex3d ( -0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d (  0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d (  1.0, -1.0, -1.0 ) ;
+  glEnd () ;
+
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.850650808354,  0.0,  0.525731112119 ) ; glVertex3d (  0.61803398875,  0.0,  1.61803398875 ) ; glVertex3d (  1.0, -1.0,  1.0 ) ; glVertex3d (  1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d (  1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d (  1.0,  1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d ( -0.850650808354,  0.0,  0.525731112119 ) ; glVertex3d ( -0.61803398875,  0.0,  1.61803398875 ) ; glVertex3d ( -1.0,  1.0,  1.0 ) ; glVertex3d ( -1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d ( -1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d ( -1.0, -1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.850650808354,  0.0, -0.525731112119 ) ; glVertex3d (  0.61803398875,  0.0, -1.61803398875 ) ; glVertex3d (  1.0,  1.0, -1.0 ) ; glVertex3d (  1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d (  1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d (  1.0, -1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d ( -0.850650808354,  0.0, -0.525731112119 ) ; glVertex3d ( -0.61803398875,  0.0, -1.61803398875 ) ; glVertex3d ( -1.0, -1.0, -1.0 ) ; glVertex3d ( -1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d ( -1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d ( -1.0,  1.0, -1.0 ) ;
+  glEnd () ;
+
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.525731112119,  0.850650808354,  0.0 ) ; glVertex3d (  1.61803398875,  0.61803398875,  0.0 ) ; glVertex3d (  1.0,  1.0, -1.0 ) ; glVertex3d ( 0.0,  1.61803398875, -0.61803398875 ) ; glVertex3d ( 0.0,  1.61803398875,  0.61803398875 ) ; glVertex3d (  1.0,  1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d (  0.525731112119, -0.850650808354,  0.0 ) ; glVertex3d (  1.61803398875, -0.61803398875,  0.0 ) ; glVertex3d (  1.0, -1.0,  1.0 ) ; glVertex3d ( 0.0, -1.61803398875,  0.61803398875 ) ; glVertex3d ( 0.0, -1.61803398875, -0.61803398875 ) ; glVertex3d (  1.0, -1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d ( -0.525731112119,  0.850650808354,  0.0 ) ; glVertex3d ( -1.61803398875,  0.61803398875,  0.0 ) ; glVertex3d ( -1.0,  1.0,  1.0 ) ; glVertex3d ( 0.0,  1.61803398875,  0.61803398875 ) ; glVertex3d ( 0.0,  1.61803398875, -0.61803398875 ) ; glVertex3d ( -1.0,  1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_LINE_LOOP ) ;
+  glNormal3d ( -0.525731112119, -0.850650808354,  0.0 ) ; glVertex3d ( -1.61803398875, -0.61803398875,  0.0 ) ; glVertex3d ( -1.0, -1.0, -1.0 ) ; glVertex3d ( 0.0, -1.61803398875, -0.61803398875 ) ; glVertex3d ( 0.0, -1.61803398875,  0.61803398875 ) ; glVertex3d ( -1.0, -1.0,  1.0 ) ;
+  glEnd () ;
+}
+
+/*
+ *
+ */
+void glutSolidDodecahedron( void )
+{
+  /* Magic Numbers:  It is possible to create a dodecahedron by attaching two pentagons to each face of
+   * of a cube.  The coordinates of the points are:
+   *   (+-x,0, z); (+-1, 1, 1); (0, z, x )
+   * where x = (-1 + sqrt(5))/2, z = (1 + sqrt(5))/2 or
+   *       x = 0.61803398875 and z = 1.61803398875.
+   */
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.0,  0.525731112119,  0.850650808354 ) ; glVertex3d (  0.0,  1.61803398875,  0.61803398875 ) ; glVertex3d ( -1.0,  1.0,  1.0 ) ; glVertex3d ( -0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d (  0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d (  1.0,  1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.0,  0.525731112119, -0.850650808354 ) ; glVertex3d (  0.0,  1.61803398875, -0.61803398875 ) ; glVertex3d (  1.0,  1.0, -1.0 ) ; glVertex3d (  0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d ( -0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d ( -1.0,  1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.0, -0.525731112119,  0.850650808354 ) ; glVertex3d (  0.0, -1.61803398875,  0.61803398875 ) ; glVertex3d (  1.0, -1.0,  1.0 ) ; glVertex3d (  0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d ( -0.61803398875, 0.0,  1.61803398875 ) ; glVertex3d ( -1.0, -1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.0, -0.525731112119, -0.850650808354 ) ; glVertex3d (  0.0, -1.61803398875, -0.61803398875 ) ; glVertex3d ( -1.0, -1.0, -1.0 ) ; glVertex3d ( -0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d (  0.61803398875, 0.0, -1.61803398875 ) ; glVertex3d (  1.0, -1.0, -1.0 ) ;
+  glEnd () ;
+
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.850650808354,  0.0,  0.525731112119 ) ; glVertex3d (  0.61803398875,  0.0,  1.61803398875 ) ; glVertex3d (  1.0, -1.0,  1.0 ) ; glVertex3d (  1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d (  1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d (  1.0,  1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d ( -0.850650808354,  0.0,  0.525731112119 ) ; glVertex3d ( -0.61803398875,  0.0,  1.61803398875 ) ; glVertex3d ( -1.0,  1.0,  1.0 ) ; glVertex3d ( -1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d ( -1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d ( -1.0, -1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.850650808354,  0.0, -0.525731112119 ) ; glVertex3d (  0.61803398875,  0.0, -1.61803398875 ) ; glVertex3d (  1.0,  1.0, -1.0 ) ; glVertex3d (  1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d (  1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d (  1.0, -1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d ( -0.850650808354,  0.0, -0.525731112119 ) ; glVertex3d ( -0.61803398875,  0.0, -1.61803398875 ) ; glVertex3d ( -1.0, -1.0, -1.0 ) ; glVertex3d ( -1.61803398875, -0.61803398875, 0.0 ) ; glVertex3d ( -1.61803398875,  0.61803398875, 0.0 ) ; glVertex3d ( -1.0,  1.0, -1.0 ) ;
+  glEnd () ;
+
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.525731112119,  0.850650808354,  0.0 ) ; glVertex3d (  1.61803398875,  0.61803398875,  0.0 ) ; glVertex3d (  1.0,  1.0, -1.0 ) ; glVertex3d ( 0.0,  1.61803398875, -0.61803398875 ) ; glVertex3d ( 0.0,  1.61803398875,  0.61803398875 ) ; glVertex3d (  1.0,  1.0,  1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d (  0.525731112119, -0.850650808354,  0.0 ) ; glVertex3d (  1.61803398875, -0.61803398875,  0.0 ) ; glVertex3d (  1.0, -1.0,  1.0 ) ; glVertex3d ( 0.0, -1.61803398875,  0.61803398875 ) ; glVertex3d ( 0.0, -1.61803398875, -0.61803398875 ) ; glVertex3d (  1.0, -1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d ( -0.525731112119,  0.850650808354,  0.0 ) ; glVertex3d ( -1.61803398875,  0.61803398875,  0.0 ) ; glVertex3d ( -1.0,  1.0,  1.0 ) ; glVertex3d ( 0.0,  1.61803398875,  0.61803398875 ) ; glVertex3d ( 0.0,  1.61803398875, -0.61803398875 ) ; glVertex3d ( -1.0,  1.0, -1.0 ) ;
+  glEnd () ;
+  glBegin ( GL_POLYGON ) ;
+  glNormal3d ( -0.525731112119, -0.850650808354,  0.0 ) ; glVertex3d ( -1.61803398875, -0.61803398875,  0.0 ) ; glVertex3d ( -1.0, -1.0, -1.0 ) ; glVertex3d ( 0.0, -1.61803398875, -0.61803398875 ) ; glVertex3d ( 0.0, -1.61803398875,  0.61803398875 ) ; glVertex3d ( -1.0, -1.0,  1.0 ) ;
+  glEnd () ;
+}
+
+/*
+ *
+ */
+void glutWireOctahedron( void )
+{
+#define RADIUS    1.0f
+  glBegin( GL_LINE_LOOP );
+    glNormal3d( 0.577350269189, 0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
+    glNormal3d( 0.577350269189, 0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
+    glNormal3d( 0.577350269189,-0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
+    glNormal3d( 0.577350269189,-0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
+    glNormal3d(-0.577350269189, 0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
+    glNormal3d(-0.577350269189, 0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
+    glNormal3d(-0.577350269189,-0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
+    glNormal3d(-0.577350269189,-0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
+  glEnd();
+#undef RADIUS
+}
+
+/*
+ *
+ */
+void glutSolidOctahedron( void )
+{
+#define RADIUS    1.0f
+  glBegin( GL_TRIANGLES );
+    glNormal3d( 0.577350269189, 0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
+    glNormal3d( 0.577350269189, 0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
+    glNormal3d( 0.577350269189,-0.577350269189, 0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
+    glNormal3d( 0.577350269189,-0.577350269189,-0.577350269189); glVertex3d( RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
+    glNormal3d(-0.577350269189, 0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, 0.0 );
+    glNormal3d(-0.577350269189, 0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS );
+    glNormal3d(-0.577350269189,-0.577350269189, 0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0, RADIUS );
+    glNormal3d(-0.577350269189,-0.577350269189,-0.577350269189); glVertex3d(-RADIUS, 0.0, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS, 0.0 );
+  glEnd();
+#undef RADIUS
+}
+
+/* Magic Numbers:  r0 = ( 1, 0, 0 )
+ *                 r1 = ( -1/3, 2 sqrt(2) / 3, 0 )
+ *                 r2 = ( -1/3, -sqrt(2) / 3, sqrt(6) / 3 )
+ *                 r3 = ( -1/3, -sqrt(2) / 3, -sqrt(6) / 3 )
+ * |r0| = |r1| = |r2| = |r3| = 1
+ * Distance between any two points is 2 sqrt(6) / 3
+ *
+ * Normals:  The unit normals are simply the negative of the coordinates of the point not on the surface.
+ */
+
+#define NUM_TETR_FACES     4
+
+static GLdouble tet_r[4][3] = { {             1.0,             0.0,             0.0 },
+                                { -0.333333333333,  0.942809041582,             0.0 },
+                                { -0.333333333333, -0.471404520791,  0.816496580928 },
+                                { -0.333333333333, -0.471404520791, -0.816496580928 } } ;
+
+static GLint tet_i[4][3] =  /* Vertex indices */
+{
+  { 1, 3, 2 }, { 0, 2, 3 }, { 0, 3, 1 }, { 0, 1, 2 }
+} ;
+
+/*
+ *
+ */
+void glutWireTetrahedron( void )
+{
+  glBegin( GL_LINE_LOOP ) ;
+    glNormal3d ( -tet_r[0][0], -tet_r[0][1], -tet_r[0][2] ) ; glVertex3dv ( tet_r[1] ) ; glVertex3dv ( tet_r[3] ) ; glVertex3dv ( tet_r[2] ) ;
+    glNormal3d ( -tet_r[1][0], -tet_r[1][1], -tet_r[1][2] ) ; glVertex3dv ( tet_r[0] ) ; glVertex3dv ( tet_r[2] ) ; glVertex3dv ( tet_r[3] ) ;
+    glNormal3d ( -tet_r[2][0], -tet_r[2][1], -tet_r[2][2] ) ; glVertex3dv ( tet_r[0] ) ; glVertex3dv ( tet_r[3] ) ; glVertex3dv ( tet_r[1] ) ;
+    glNormal3d ( -tet_r[3][0], -tet_r[3][1], -tet_r[3][2] ) ; glVertex3dv ( tet_r[0] ) ; glVertex3dv ( tet_r[1] ) ; glVertex3dv ( tet_r[2] ) ;
+  glEnd() ;
+}
+
+/*
+ *
+ */
+void glutSolidTetrahedron( void )
+{
+  glBegin( GL_TRIANGLES ) ;
+    glNormal3d ( -tet_r[0][0], -tet_r[0][1], -tet_r[0][2] ) ; glVertex3dv ( tet_r[1] ) ; glVertex3dv ( tet_r[3] ) ; glVertex3dv ( tet_r[2] ) ;
+    glNormal3d ( -tet_r[1][0], -tet_r[1][1], -tet_r[1][2] ) ; glVertex3dv ( tet_r[0] ) ; glVertex3dv ( tet_r[2] ) ; glVertex3dv ( tet_r[3] ) ;
+    glNormal3d ( -tet_r[2][0], -tet_r[2][1], -tet_r[2][2] ) ; glVertex3dv ( tet_r[0] ) ; glVertex3dv ( tet_r[3] ) ; glVertex3dv ( tet_r[1] ) ;
+    glNormal3d ( -tet_r[3][0], -tet_r[3][1], -tet_r[3][2] ) ; glVertex3dv ( tet_r[0] ) ; glVertex3dv ( tet_r[1] ) ; glVertex3dv ( tet_r[2] ) ;
+  glEnd() ;
+}
+
+/*
+ *
+ */
+double icos_r[12][3] = { { 1.0, 0.0, 0.0 },
+  {  0.447213595500,  0.894427191000, 0.0 }, {  0.447213595500,  0.276393202252, 0.850650808354 }, {  0.447213595500, -0.723606797748, 0.525731112119 }, {  0.447213595500, -0.723606797748, -0.525731112119 }, {  0.447213595500,  0.276393202252, -0.850650808354 },
+  { -0.447213595500, -0.894427191000, 0.0 }, { -0.447213595500, -0.276393202252, 0.850650808354 }, { -0.447213595500,  0.723606797748, 0.525731112119 }, { -0.447213595500,  0.723606797748, -0.525731112119 }, { -0.447213595500, -0.276393202252, -0.850650808354 },
+  { -1.0, 0.0, 0.0 } } ;
+int icos_v [20][3] = { { 0, 1, 2 }, { 0, 2, 3 }, { 0, 3, 4 }, { 0, 4, 5 }, { 0, 5, 1 },
+                       { 1, 8, 2 }, { 2, 7, 3 }, { 3, 6, 4 }, { 4, 10, 5 }, { 5, 9, 1 },
+                       { 1, 9, 8 }, { 2, 8, 7 }, { 3, 7, 6 }, { 4, 6, 10 }, { 5, 10, 9 },
+                       { 11, 9, 10 }, { 11, 8, 9 }, { 11, 7, 8 }, { 11, 6, 7 }, { 11, 10, 6 } } ;
+
+void glutWireIcosahedron( void )
+{
+  int i ;
+
+  for ( i = 0; i < 20; i++ )
+  {
+    double normal[3] ;
+    normal[0] = ( icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1] ) * ( icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2] ) - ( icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2] ) * ( icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1] ) ;
+    normal[1] = ( icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2] ) * ( icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0] ) - ( icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0] ) * ( icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2] ) ;
+    normal[2] = ( icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0] ) * ( icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1] ) - ( icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1] ) * ( icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0] ) ;
+    glBegin ( GL_LINE_LOOP ) ;
+      glNormal3dv ( normal ) ;
+      glVertex3dv ( icos_r[icos_v[i][0]] ) ;
+      glVertex3dv ( icos_r[icos_v[i][1]] ) ;
+      glVertex3dv ( icos_r[icos_v[i][2]] ) ;
+    glEnd () ;
+  }
+}
+
+/*
+ *
+ */
+void glutSolidIcosahedron( void )
+{
+  int i ;
+
+  glBegin ( GL_TRIANGLES ) ;
+  for ( i = 0; i < 20; i++ )
+  {
+    double normal[3] ;
+    normal[0] = ( icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1] ) * ( icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2] ) - ( icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2] ) * ( icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1] ) ;
+    normal[1] = ( icos_r[icos_v[i][1]][2] - icos_r[icos_v[i][0]][2] ) * ( icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0] ) - ( icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0] ) * ( icos_r[icos_v[i][2]][2] - icos_r[icos_v[i][0]][2] ) ;
+    normal[2] = ( icos_r[icos_v[i][1]][0] - icos_r[icos_v[i][0]][0] ) * ( icos_r[icos_v[i][2]][1] - icos_r[icos_v[i][0]][1] ) - ( icos_r[icos_v[i][1]][1] - icos_r[icos_v[i][0]][1] ) * ( icos_r[icos_v[i][2]][0] - icos_r[icos_v[i][0]][0] ) ;
+      glNormal3dv ( normal ) ;
+      glVertex3dv ( icos_r[icos_v[i][0]] ) ;
+      glVertex3dv ( icos_r[icos_v[i][1]] ) ;
+      glVertex3dv ( icos_r[icos_v[i][2]] ) ;
+  }
+
+  glEnd () ;
+}
+
+/*
+ *
+ */
+double rdod_r[14][3] = { { 0.0, 0.0, 1.0 },
+  {  0.707106781187,  0.000000000000,  0.5 }, {  0.000000000000,  0.707106781187,  0.5 }, { -0.707106781187,  0.000000000000,  0.5 }, {  0.000000000000, -0.707106781187,  0.5 },
+  {  0.707106781187,  0.707106781187,  0.0 }, { -0.707106781187,  0.707106781187,  0.0 }, { -0.707106781187, -0.707106781187,  0.0 }, {  0.707106781187, -0.707106781187,  0.0 },
+  {  0.707106781187,  0.000000000000, -0.5 }, {  0.000000000000,  0.707106781187, -0.5 }, { -0.707106781187,  0.000000000000, -0.5 }, {  0.000000000000, -0.707106781187, -0.5 },
+  {  0.0, 0.0, -1.0 } } ;
+int rdod_v [12][4] = { { 0,  1,  5,  2 }, { 0,  2,  6,  3 }, { 0,  3,  7,  4 }, { 0,  4,  8, 1 },
+                       { 5, 10,  6,  2 }, { 6, 11,  7,  3 }, { 7, 12,  8,  4 }, { 8,  9,  5, 1 },
+                       { 5,  9, 13, 10 }, { 6, 10, 13, 11 }, { 7, 11, 13, 12 }, { 8, 12, 13, 9 } } ;
+double rdod_n[12][3] = {
+  {  0.353553390594,  0.353553390594,  0.5 }, { -0.353553390594,  0.353553390594,  0.5 }, { -0.353553390594, -0.353553390594,  0.5 }, {  0.353553390594, -0.353553390594,  0.5 },
+  {  0.000000000000,  1.000000000000,  0.0 }, { -1.000000000000,  0.000000000000,  0.0 }, {  0.000000000000, -1.000000000000,  0.0 }, {  1.000000000000,  0.000000000000,  0.0 },
+  {  0.353553390594,  0.353553390594, -0.5 }, { -0.353553390594,  0.353553390594, -0.5 }, { -0.353553390594, -0.353553390594, -0.5 }, {  0.353553390594, -0.353553390594, -0.5 }
+  } ;
+
+void glutWireRhombicDodecahedron( void )
+{
+  int i ;
+
+  for ( i = 0; i < 12; i++ )
+  {
+    glBegin ( GL_LINE_LOOP ) ;
+      glNormal3dv ( rdod_n[i] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][0]] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][1]] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][2]] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][3]] ) ;
+    glEnd () ;
+  }
+}
+
+/*
+ *
+ */
+void glutSolidRhombicDodecahedron( void )
+{
+  int i ;
+
+  glBegin ( GL_QUADS ) ;
+  for ( i = 0; i < 12; i++ )
+  {
+      glNormal3dv ( rdod_n[i] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][0]] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][1]] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][2]] ) ;
+      glVertex3dv ( rdod_r[rdod_v[i][3]] ) ;
+  }
+
+  glEnd () ;
+}
+
+void glutWireSierpinskiSponge ( int num_levels, GLdouble offset[3], GLdouble scale )
+{
+  int i, j ;
+
+  if ( num_levels == 0 )
+  {
+
+    for ( i = 0 ; i < NUM_TETR_FACES ; i++ )
+    {
+      glBegin ( GL_LINE_LOOP ) ;
+      glNormal3d ( -tet_r[i][0], -tet_r[i][1], -tet_r[i][2] ) ;
+      for ( j = 0; j < 3; j++ )
+      {
+        double x = offset[0] + scale * tet_r[tet_i[i][j]][0] ;
+        double y = offset[1] + scale * tet_r[tet_i[i][j]][1] ;
+        double z = offset[2] + scale * tet_r[tet_i[i][j]][2] ;
+        glVertex3d ( x, y, z ) ;
+      }
+
+      glEnd () ;
+    }
+  }
+  else
+  {
+    GLdouble local_offset[3] ;  /* Use a local variable to avoid buildup of roundoff errors */
+    num_levels -- ;
+    scale /= 2.0 ;
+    for ( i = 0 ; i < NUM_TETR_FACES ; i++ )
+    {
+      local_offset[0] = offset[0] + scale * tet_r[i][0] ;
+      local_offset[1] = offset[1] + scale * tet_r[i][1] ;
+      local_offset[2] = offset[2] + scale * tet_r[i][2] ;
+      glutWireSierpinskiSponge ( num_levels, local_offset, scale ) ;
+    }
+  }
+}
+
+void glutSolidSierpinskiSponge ( int num_levels, GLdouble offset[3], GLdouble scale )
+{
+  int i, j ;
+
+  if ( num_levels == 0 )
+  {
+    glBegin ( GL_TRIANGLES ) ;
+
+    for ( i = 0 ; i < NUM_TETR_FACES ; i++ )
+    {
+      glNormal3d ( -tet_r[i][0], -tet_r[i][1], -tet_r[i][2] ) ;
+      for ( j = 0; j < 3; j++ )
+      {
+        double x = offset[0] + scale * tet_r[tet_i[i][j]][0] ;
+        double y = offset[1] + scale * tet_r[tet_i[i][j]][1] ;
+        double z = offset[2] + scale * tet_r[tet_i[i][j]][2] ;
+        glVertex3d ( x, y, z ) ;
+      }
+    }
+
+    glEnd () ;
+  }
+  else
+  {
+    GLdouble local_offset[3] ;  /* Use a local variable to avoid buildup of roundoff errors */
+    num_levels -- ;
+    scale /= 2.0 ;
+    for ( i = 0 ; i < NUM_TETR_FACES ; i++ )
+    {
+      local_offset[0] = offset[0] + scale * tet_r[i][0] ;
+      local_offset[1] = offset[1] + scale * tet_r[i][1] ;
+      local_offset[2] = offset[2] + scale * tet_r[i][2] ;
+      glutSolidSierpinskiSponge ( num_levels, local_offset, scale ) ;
+    }
+  }
+}
+
+/*** END OF FILE ***/
-- 
cgit v1.3.1