X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Ffg_geometry.c;h=f52e13f2dab7c88bd3d6b62fab38cf3b825c4f90;hb=ee9edf0b34600e68936e677163238f2f47367fae;hp=14c48e86a299919d01316b01d0021753dcfaff2e;hpb=322b257b6daebfa0d8a09b389eb935bf7d6d80c1;p=freeglut

diff --git a/src/fg_geometry.c b/src/fg_geometry.c
index 14c48e8..f52e13f 100644
--- a/src/fg_geometry.c
+++ b/src/fg_geometry.c
@@ -67,7 +67,7 @@
  * useWireMode controls the drawing of solids (false) or wire frame
  * versions (TRUE) of the geometry you pass
  */
-static void fghDrawGeometry(GLenum vertexMode, double* vertices, double* normals, GLsizei numVertices, GLboolean useWireMode)
+static void fghDrawGeometry(GLenum vertexMode, GLdouble* vertices, GLdouble* normals, GLsizei numVertices, GLboolean useWireMode)
 {
     if (useWireMode)
     {
@@ -75,15 +75,31 @@ static void fghDrawGeometry(GLenum vertexMode, double* vertices, double* normals
         glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
     }
 
-    glEnableClientState(GL_VERTEX_ARRAY);
-    glEnableClientState(GL_NORMAL_ARRAY);
+    if (1)
+    {
+        glEnableClientState(GL_VERTEX_ARRAY);
+        glEnableClientState(GL_NORMAL_ARRAY);
 
-    glVertexPointer(3, GL_DOUBLE, 0, vertices);
-    glNormalPointer(GL_DOUBLE, 0, normals);
-    glDrawArrays(vertexMode,0,numVertices);
+        glVertexPointer(3, GL_DOUBLE, 0, vertices);
+        glNormalPointer(GL_DOUBLE, 0, normals);
+        glDrawArrays(vertexMode, 0, numVertices);
 
-    glDisableClientState(GL_VERTEX_ARRAY);
-    glDisableClientState(GL_NORMAL_ARRAY);
+        glDisableClientState(GL_VERTEX_ARRAY);
+        glDisableClientState(GL_NORMAL_ARRAY);
+    }
+    else
+    {
+        int i;
+        glBegin(vertexMode);
+            for(i=0; i<numVertices; i++)
+            {
+                glNormal3dv(normals+i*3);
+                printf("n(%i) = (%1.4f,%1.4f,%1.4f)\n",i,*(normals+i*3),*(normals+i*3+1),*(normals+i*3+2));
+                glVertex3dv(vertices+i*3);
+                printf("v(%i) = (%1.4f,%1.4f,%1.4f)\n",i,*(vertices+i*3),*(vertices+i*3+1),*(vertices+i*3+2));
+            }
+        glEnd();
+    }
 
     if (useWireMode)
     {
@@ -91,6 +107,35 @@ static void fghDrawGeometry(GLenum vertexMode, double* vertices, double* normals
     }
 }
 
+static void fghGenerateGeometry(int numFaces, int numVertPerFace, GLdouble *vertices, GLubyte* vertIndices, GLdouble *normals, GLdouble *vertOut, GLdouble *normOut)
+{
+    int i,j;
+    /*
+     * Build array with vertices from vertex coordinates and vertex indices 
+     * Do same for normals.
+     * Need to do this because of different normals at shared vertices
+     * (and because normals' coordinates need to be negated).
+     */
+    for (i=0; i<numFaces; i++)
+    {
+        int normIdx         = i*3;
+        int faceIdxVertIdx  = i*numVertPerFace;
+        for (j=0; j<numVertPerFace; j++)
+        {
+            int outIdx  = i*numVertPerFace*3+j*3;
+            int vertIdx = vertIndices[faceIdxVertIdx+j]*3;
+
+            vertOut[outIdx  ] = vertices[vertIdx  ];
+            vertOut[outIdx+1] = vertices[vertIdx+1];
+            vertOut[outIdx+2] = vertices[vertIdx+2];
+
+            normOut[outIdx  ] = normals [normIdx  ];
+            normOut[outIdx+1] = normals [normIdx+1];
+            normOut[outIdx+2] = normals [normIdx+2];
+        }
+    }
+}
+
 
 /* -- INTERNAL SETUP OF GEOMETRY --------------------------------------- */
 static unsigned int ipow (int x, unsigned int y)
@@ -109,59 +154,105 @@ static unsigned int ipow (int x, unsigned int y)
 #define CUBE_NUM_VERT           8
 #define CUBE_NUM_FACES          6
 #define CUBE_NUM_VERT_PER_FACE  4
-#define CUBE_VERT_PER_TETR      CUBE_NUM_FACES*CUBE_NUM_VERT_PER_FACE
-#define CUBE_VERT_ELEM_PER_TETR CUBE_VERT_PER_TETR*3
+#define CUBE_VERT_PER_CUBE      CUBE_NUM_FACES*CUBE_NUM_VERT_PER_FACE
+#define CUBE_VERT_ELEM_PER_CUBE CUBE_VERT_PER_CUBE*3
 /* Vertex Coordinates */
-static GLdouble cube_v[CUBE_NUM_VERT][3] =
+static GLdouble cube_v[CUBE_NUM_VERT*3] =
 {
-    { .5, .5, .5},
-    {-.5, .5, .5},
-    {-.5,-.5, .5},
-    { .5,-.5, .5},
-    { .5,-.5,-.5},
-    { .5, .5,-.5},
-    {-.5, .5,-.5},
-    {-.5,-.5,-.5}
+     .5, .5, .5,
+    -.5, .5, .5,
+    -.5,-.5, .5,
+     .5,-.5, .5,
+     .5,-.5,-.5,
+     .5, .5,-.5,
+    -.5, .5,-.5,
+    -.5,-.5,-.5
 };
 /* Normal Vectors */
-static GLdouble cube_n[CUBE_NUM_FACES][3] =
+static GLdouble cube_n[CUBE_NUM_FACES*3] =
 {
-    { 1.0, 0.0, 0.0},
-    { 0.0, 1.0, 0.0},
-    { 0.0, 0.0, 1.0},
-    {-1.0, 0.0, 0.0},
-    { 0.0,-1.0, 0.0},
-    { 0.0, 0.0,-1.0}
+     0.0, 0.0, 1.0,
+     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
 };
 
 /* Vertex indices */
-static GLubyte cube_vi[CUBE_NUM_FACES][CUBE_NUM_VERT_PER_FACE] =
+static GLubyte cube_vi[CUBE_VERT_PER_CUBE] =
 {
-    {0,1,2,3}, {0,3,4,5}, {0,5,6,1}, {1,6,7,2}, {7,4,3,2}, {4,7,6,5}
+    0,1,2,3,
+    0,3,4,5,
+    0,5,6,1,
+    1,6,7,2,
+    7,4,3,2,
+    4,7,6,5
 };
 
 /* Cache of input to glDrawArrays */
 static GLboolean cubeCached = FALSE;
-static double cube_verts[CUBE_VERT_ELEM_PER_TETR];
-static double cube_norms[CUBE_VERT_ELEM_PER_TETR];
+static GLdouble cube_verts[CUBE_VERT_ELEM_PER_CUBE];
+static GLdouble cube_norms[CUBE_VERT_ELEM_PER_CUBE];
 
 static void fghCubeGenerate()
-{   
-    int i,j;
-    for (i=0; i<CUBE_NUM_FACES; i++)
-    {
-        for (j=0; j<CUBE_NUM_VERT_PER_FACE; j++)
-        {
-            int idx = i*CUBE_NUM_VERT_PER_FACE*3+j*3;
-            cube_verts[idx  ] = cube_v[cube_vi[i][j]][0];
-            cube_verts[idx+1] = cube_v[cube_vi[i][j]][1];
-            cube_verts[idx+2] = cube_v[cube_vi[i][j]][2];
-
-            cube_norms[idx  ] = cube_n[i][0];
-            cube_norms[idx+1] = cube_n[i][1];
-            cube_norms[idx+2] = cube_n[i][2];
-        }
-    }
+{
+    fghGenerateGeometry(CUBE_NUM_FACES, CUBE_NUM_VERT_PER_FACE, cube_v, cube_vi, cube_n, cube_verts, cube_norms);
+}
+
+/* -- Octahedron -- */
+#define OCTAHEDRON_NUM_VERT           6
+#define OCTAHEDRON_NUM_FACES          8
+#define OCTAHEDRON_NUM_VERT_PER_FACE  3
+#define OCTAHEDRON_VERT_PER_OCTA      OCTAHEDRON_NUM_FACES*OCTAHEDRON_NUM_VERT_PER_FACE
+#define OCTAHEDRON_VERT_ELEM_PER_OCTA OCTAHEDRON_VERT_PER_OCTA*3
+
+/* Vertex Coordinates */
+static GLdouble octahedron_v[OCTAHEDRON_NUM_VERT*3] =
+{
+     1.,  0.,  0.,
+     0.,  1.,  0.,
+     0.,  0.,  1.,
+    -1.,  0.,  0.,
+     0., -1.,  0.,
+     0.,  0., -1.,
+
+};
+/* Normal Vectors */
+static GLdouble octahedron_n[OCTAHEDRON_NUM_FACES*3] =
+{
+     0.577350269189, 0.577350269189, 0.577350269189,    /* sqrt(1/3) */
+     0.577350269189, 0.577350269189,-0.577350269189,
+     0.577350269189,-0.577350269189, 0.577350269189,
+     0.577350269189,-0.577350269189,-0.577350269189,
+    -0.577350269189, 0.577350269189, 0.577350269189,
+    -0.577350269189, 0.577350269189,-0.577350269189,
+    -0.577350269189,-0.577350269189, 0.577350269189,
+    -0.577350269189,-0.577350269189,-0.577350269189
+
+};
+
+/* Vertex indices */
+static GLubyte octahedron_vi[OCTAHEDRON_VERT_PER_OCTA] =
+{
+    0, 1, 2,
+    0, 5, 1,
+    0, 2, 4,
+    0, 4, 5,
+    3, 2, 1,
+    3, 1, 5,
+    3, 4, 2,
+    3, 5, 4
+};
+
+/* Cache of input to glDrawArrays */
+static GLboolean octahedronCached = FALSE;
+static GLdouble octahedron_verts[OCTAHEDRON_VERT_ELEM_PER_OCTA];
+static GLdouble octahedron_norms[OCTAHEDRON_VERT_ELEM_PER_OCTA];
+
+static void fghOctahedronGenerate()
+{
+    fghGenerateGeometry(OCTAHEDRON_NUM_FACES, OCTAHEDRON_NUM_VERT_PER_FACE, octahedron_v, octahedron_vi, octahedron_n, octahedron_verts, octahedron_norms);
 }
 
 /* -- Tetrahedron -- */
@@ -181,76 +272,63 @@ static void fghCubeGenerate()
 #define TETR_VERT_ELEM_PER_TETR TETR_VERT_PER_TETR*3
 
 /* Vertex Coordinates */
-static GLdouble tet_r[TETR_NUM_VERT][3] =
+static GLdouble tetr_v[TETR_NUM_VERT*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 }
+                1.0,             0.0,             0.0,
+    -0.333333333333,  0.942809041582,             0.0,
+    -0.333333333333, -0.471404520791,  0.816496580928,
+    -0.333333333333, -0.471404520791, -0.816496580928
 };
 /* Normal Vectors */
-static GLdouble tet_n[CUBE_NUM_FACES][3] =
+static GLdouble tetr_n[CUBE_NUM_FACES*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 }
+    -           1.0,             0.0,             0.0,
+     0.333333333333, -0.942809041582,             0.0,
+     0.333333333333,  0.471404520791, -0.816496580928,
+     0.333333333333,  0.471404520791,  0.816496580928
 };
 
 /* Vertex indices */
-static GLubyte tet_i[TETR_NUM_FACES][TETR_NUM_VERT_PER_FACE] =
+static GLubyte tetr_vi[TETR_VERT_PER_TETR] =
 {
-    { 1, 3, 2 }, { 0, 2, 3 }, { 0, 3, 1 }, { 0, 1, 2 }
+    1, 3, 2,
+    0, 2, 3,
+    0, 3, 1,
+    0, 1, 2
 };
 
 /* Cache of input to glDrawArrays */
 static GLboolean tetrCached = FALSE;
-static double tetr_verts[TETR_VERT_ELEM_PER_TETR];
-static double tetr_norms[TETR_VERT_ELEM_PER_TETR];
+static GLdouble tetr_verts[TETR_VERT_ELEM_PER_TETR];
+static GLdouble tetr_norms[TETR_VERT_ELEM_PER_TETR];
 
 static void fghTetrahedronGenerate()
 {
-    int i,j;
-    /*
-     * Build array with vertices from vertex coordinates and vertex indices 
-     * Do same for normals.
-     * Need to do this because of different normals at shared vertices
-     * (and because normals' coordinates need to be negated).
-     */
-    for (i=0; i<TETR_NUM_FACES; i++)
-    {
-        for (j=0; j<TETR_NUM_VERT_PER_FACE; j++)
-        {
-            int idx = i*TETR_NUM_VERT_PER_FACE*3+j*3;
-            tetr_verts[idx  ] =  tet_r[tet_i[i][j]][0];
-            tetr_verts[idx+1] =  tet_r[tet_i[i][j]][1];
-            tetr_verts[idx+2] =  tet_r[tet_i[i][j]][2];
-
-            tetr_norms[idx  ] =  tet_n[i][0];
-            tetr_norms[idx+1] =  tet_n[i][1];
-            tetr_norms[idx+2] =  tet_n[i][2];
-        }
-    }
+    fghGenerateGeometry(TETR_NUM_FACES, TETR_NUM_VERT_PER_FACE, tetr_v, tetr_vi, tetr_n, tetr_verts, tetr_norms);
 }
 
 /* -- Sierpinski Sponge -- */
-static void fghSierpinskiSpongeGenerate ( int numLevels, GLdouble offset[3], GLdouble scale, double* vertices, double* normals )
+static void fghSierpinskiSpongeGenerate ( int numLevels, GLdouble offset[3], GLdouble scale, GLdouble* vertices, GLdouble* normals )
 {
     int i, j;
     if ( numLevels == 0 )
     {
-        for ( i = 0 ; i < TETR_NUM_FACES ; i++ )
+        for (i=0; i<TETR_NUM_FACES; i++)
         {
-            for ( j = 0; j < TETR_NUM_VERT_PER_FACE; j++ )
+            int normIdx         = i*3;
+            int faceIdxVertIdx  = i*TETR_NUM_VERT_PER_FACE;
+            for (j=0; j<TETR_NUM_VERT_PER_FACE; j++)
             {
-                int idx = i*TETR_NUM_VERT_PER_FACE*3+j*3;
-                vertices[idx  ] =  offset[0] + scale * tet_r[tet_i[i][j]][0];
-                vertices[idx+1] =  offset[1] + scale * tet_r[tet_i[i][j]][1];
-                vertices[idx+2] =  offset[2] + scale * tet_r[tet_i[i][j]][2];
-
-                normals [idx  ] = -tet_r[i][0];
-                normals [idx+1] = -tet_r[i][1];
-                normals [idx+2] = -tet_r[i][2];
+                int outIdx  = i*TETR_NUM_VERT_PER_FACE*3+j*3;
+                int vertIdx = tetr_vi[faceIdxVertIdx+j]*3;
+
+                vertices[outIdx  ] = offset[0] + scale * tetr_v[vertIdx  ];
+                vertices[outIdx+1] = offset[1] + scale * tetr_v[vertIdx+1];
+                vertices[outIdx+2] = offset[2] + scale * tetr_v[vertIdx+2];
+
+                normals [outIdx  ] = tetr_n[normIdx  ];
+                normals [outIdx+1] = tetr_n[normIdx+1];
+                normals [outIdx+2] = tetr_n[normIdx+2];
             }
         }
     }
@@ -261,9 +339,10 @@ static void fghSierpinskiSpongeGenerate ( int numLevels, GLdouble offset[3], GLd
         scale /= 2.0 ;
         for ( i = 0 ; i < TETR_NUM_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];
+            int idx         = i*3;
+            local_offset[0] = offset[0] + scale * tetr_v[idx  ];
+            local_offset[1] = offset[1] + scale * tetr_v[idx+1];
+            local_offset[2] = offset[2] + scale * tetr_v[idx+2];
             fghSierpinskiSpongeGenerate ( numLevels, local_offset, scale, vertices+i*stride, normals+i*stride );
         }
     }
@@ -335,11 +414,28 @@ static void fghCube( GLdouble dSize, GLboolean useWireMode )
 
     if (dSize!=1.)
     {
-        /* Need to build new */
-        fghDrawGeometry(GL_QUADS,cube_verts,cube_norms,CUBE_VERT_PER_TETR,useWireMode);
+        int i;
+
+        /* Need to build new vertex list containing vertices for cube of different size */
+        GLdouble *vertices = malloc(CUBE_VERT_ELEM_PER_CUBE * sizeof(GLdouble));
+        for (i=0; i<CUBE_VERT_ELEM_PER_CUBE; i++)
+            vertices[i] = dSize*cube_verts[i];
+
+        fghDrawGeometry(GL_QUADS,vertices  ,cube_norms,CUBE_VERT_PER_CUBE,useWireMode);
     }
     else
-        fghDrawGeometry(GL_QUADS,cube_verts,cube_norms,CUBE_VERT_PER_TETR,useWireMode);
+        fghDrawGeometry(GL_QUADS,cube_verts,cube_norms,CUBE_VERT_PER_CUBE,useWireMode);
+}
+
+static void fghOctahedron( GLboolean useWireMode )
+{
+    if (!octahedronCached)
+    {
+        fghOctahedronGenerate();
+        octahedronCached = TRUE;
+    }
+
+    fghDrawGeometry(GL_TRIANGLES,octahedron_verts,octahedron_norms,OCTAHEDRON_VERT_PER_OCTA,useWireMode);
 }
 
 static void fghTetrahedron( GLboolean useWireMode )
@@ -355,16 +451,16 @@ static void fghTetrahedron( GLboolean useWireMode )
 
 static void fghSierpinskiSponge ( int numLevels, GLdouble offset[3], GLdouble scale, GLboolean useWireMode )
 {
-    double      *vertices;
-    double      * normals;
-    unsigned int  numTetr = numLevels<0? 0 : ipow(4,numLevels); /* No sponge for numLevels below 0 */
-    unsigned int  numVert = numTetr*TETR_VERT_PER_TETR;
+    GLdouble *vertices;
+    GLdouble * normals;
+    GLsizei    numTetr = numLevels<0? 0 : ipow(4,numLevels); /* No sponge for numLevels below 0 */
+    GLsizei    numVert = numTetr*TETR_VERT_PER_TETR;
 
     if (numTetr)
     {
         /* Allocate memory */
-        vertices = malloc(numVert*3 * sizeof(double));
-        normals  = malloc(numVert*3 * sizeof(double));
+        vertices = malloc(numVert*3 * sizeof(GLdouble));
+        normals  = malloc(numVert*3 * sizeof(GLdouble));
 
         /* Generate elements */
         fghSierpinskiSpongeGenerate ( numLevels, offset, scale, vertices, normals );
@@ -1082,48 +1178,6 @@ void FGAPIENTRY glutSolidDodecahedron( void )
 /*
  *
  */
-void FGAPIENTRY glutWireOctahedron( void )
-{
-  FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireOctahedron" );
-
-#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 FGAPIENTRY glutSolidOctahedron( void )
-{
-  FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidOctahedron" );
-
-#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
-}
-
-/*
- *
- */
 static double icos_r[12][3] = {
     {  1.0,             0.0,             0.0            },
     {  0.447213595500,  0.894427191000,  0.0            },
@@ -1315,15 +1369,15 @@ void FGAPIENTRY glutSolidCube( GLdouble dSize )
     fghCube( dSize, FALSE );
 }
 
-void FGAPIENTRY glutWireTetrahedron( void )
+void FGAPIENTRY glutWireOctahedron( void )
 {
-    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireTetrahedron" );
-    fghTetrahedron( TRUE );
+    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireOctahedron" );
+    fghOctahedron( TRUE );
 }
-void FGAPIENTRY glutSolidTetrahedron( void )
+void FGAPIENTRY glutSolidOctahedron( void )
 {
-    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidTetrahedron" );
-    fghTetrahedron( FALSE );
+    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidOctahedron" );
+    fghOctahedron( FALSE );
 }
 
 void FGAPIENTRY glutWireSierpinskiSponge ( int num_levels, GLdouble offset[3], GLdouble scale )
@@ -1337,5 +1391,16 @@ void FGAPIENTRY glutSolidSierpinskiSponge ( int num_levels, GLdouble offset[3],
     fghSierpinskiSponge ( num_levels, offset, scale, FALSE );
 }
 
+void FGAPIENTRY glutWireTetrahedron( void )
+{
+    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireTetrahedron" );
+    fghTetrahedron( TRUE );
+}
+void FGAPIENTRY glutSolidTetrahedron( void )
+{
+    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidTetrahedron" );
+    fghTetrahedron( FALSE );
+}
+
 
 /*** END OF FILE ***/