};
DECLARE_SHAPE_CACHE(cube,Cube,CUBE);
+/* Icosahedron */
+#define ICOSAHEDRON_NUM_VERT 12
+#define ICOSAHEDRON_NUM_FACES 20
+#define ICOSAHEDRON_NUM_VERT_PER_FACE 3
+#define ICOSAHEDRON_VERT_PER_OBJ ICOSAHEDRON_NUM_FACES*ICOSAHEDRON_NUM_VERT_PER_FACE
+#define ICOSAHEDRON_VERT_ELEM_PER_OBJ ICOSAHEDRON_VERT_PER_OBJ*3
+/* Vertex Coordinates */
+static GLdouble icosahedron_v[ICOSAHEDRON_NUM_VERT*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
+};
+/* Normal Vectors:
+ * icosahedron_n[i][0] = ( icosahedron_v[icosahedron_vi[i][1]][1] - icosahedron_v[icosahedron_vi[i][0]][1] ) * ( icosahedron_v[icosahedron_vi[i][2]][2] - icosahedron_v[icosahedron_vi[i][0]][2] ) - ( icosahedron_v[icosahedron_vi[i][1]][2] - icosahedron_v[icosahedron_vi[i][0]][2] ) * ( icosahedron_v[icosahedron_vi[i][2]][1] - icosahedron_v[icosahedron_vi[i][0]][1] ) ;
+ * icosahedron_n[i][1] = ( icosahedron_v[icosahedron_vi[i][1]][2] - icosahedron_v[icosahedron_vi[i][0]][2] ) * ( icosahedron_v[icosahedron_vi[i][2]][0] - icosahedron_v[icosahedron_vi[i][0]][0] ) - ( icosahedron_v[icosahedron_vi[i][1]][0] - icosahedron_v[icosahedron_vi[i][0]][0] ) * ( icosahedron_v[icosahedron_vi[i][2]][2] - icosahedron_v[icosahedron_vi[i][0]][2] ) ;
+ * icosahedron_n[i][2] = ( icosahedron_v[icosahedron_vi[i][1]][0] - icosahedron_v[icosahedron_vi[i][0]][0] ) * ( icosahedron_v[icosahedron_vi[i][2]][1] - icosahedron_v[icosahedron_vi[i][0]][1] ) - ( icosahedron_v[icosahedron_vi[i][1]][1] - icosahedron_v[icosahedron_vi[i][0]][1] ) * ( icosahedron_v[icosahedron_vi[i][2]][0] - icosahedron_v[icosahedron_vi[i][0]][0] ) ;
+*/
+static GLdouble icosahedron_n[ICOSAHEDRON_NUM_FACES*3] =
+{
+ 0.760845213037948, 0.470228201835026, 0.341640786498800,
+ 0.760845213036861, -0.179611190632978, 0.552786404500000,
+ 0.760845213033849, -0.581234022404097, 0,
+ 0.760845213036861, -0.179611190632978, -0.552786404500000,
+ 0.760845213037948, 0.470228201835026, -0.341640786498800,
+ 0.179611190628666, 0.760845213037948, 0.552786404498399,
+ 0.179611190634277, -0.290617011204044, 0.894427191000000,
+ 0.179611190633958, -0.940456403667806, 0,
+ 0.179611190634278, -0.290617011204044, -0.894427191000000,
+ 0.179611190628666, 0.760845213037948, -0.552786404498399,
+ -0.179611190633958, 0.940456403667806, 0,
+ -0.179611190634277, 0.290617011204044, 0.894427191000000,
+ -0.179611190628666, -0.760845213037948, 0.552786404498399,
+ -0.179611190628666, -0.760845213037948, -0.552786404498399,
+ -0.179611190634277, 0.290617011204044, -0.894427191000000,
+ -0.760845213036861, 0.179611190632978, -0.552786404500000,
+ -0.760845213033849, 0.581234022404097, 0,
+ -0.760845213036861, 0.179611190632978, 0.552786404500000,
+ -0.760845213037948, -0.470228201835026, 0.341640786498800,
+ -0.760845213037948, -0.470228201835026, -0.341640786498800,
+};
+
+/* Vertex indices */
+static GLubyte icosahedron_vi[ICOSAHEDRON_VERT_PER_OBJ] =
+{
+ 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
+};
+DECLARE_SHAPE_CACHE(icosahedron,Icosahedron,ICOSAHEDRON);
+
/* -- Octahedron -- */
#define OCTAHEDRON_NUM_VERT 6
#define OCTAHEDRON_NUM_FACES 8
else
fghDrawGeometry(GL_QUADS,cube_verts,cube_norms,CUBE_VERT_PER_OBJ,useWireMode);
}
+DECLARE_INTERNAL_DRAW(icosahedron,Icosahedron,ICOSAHEDRON);
DECLARE_INTERNAL_DRAW(octahedron,Octahedron,OCTAHEDRON);
DECLARE_INTERNAL_DRAW(tetrahedron,Tetrahedron,TETRAHEDRON);
/*
*
*/
-static 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 }
-};
-
-static 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 FGAPIENTRY glutWireIcosahedron( void )
-{
- int i ;
-
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireIcosahedron" );
-
- 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 FGAPIENTRY glutSolidIcosahedron( void )
-{
- int i ;
-
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidIcosahedron" );
-
- 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 () ;
-}
-
-/*
- *
- */
static double rdod_r[14][3] = {
{ 0.0, 0.0, 1.0 },
{ 0.707106781187, 0.000000000000, 0.5 },
/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
-/*
- * Draws a wireframed cube.
- */
+/* Macro to generate interface functions */
+#define DECLARE_SHAPE_INTERFACE(nameICaps)\
+ void FGAPIENTRY glutWire##nameICaps( void )\
+ {\
+ FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWire"#nameICaps );\
+ fgh##nameICaps( TRUE );\
+ }\
+ void FGAPIENTRY glutSolid##nameICaps( void )\
+ {\
+ FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolid"#nameICaps );\
+ fgh##nameICaps( FALSE );\
+ }
+
void FGAPIENTRY glutWireCube( GLdouble dSize )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireCube" );
fghCube( dSize, FALSE );
}
-void FGAPIENTRY glutWireOctahedron( void )
-{
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWireOctahedron" );
- fghOctahedron( TRUE );
-}
-void FGAPIENTRY glutSolidOctahedron( void )
-{
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSolidOctahedron" );
- fghOctahedron( FALSE );
-}
+DECLARE_SHAPE_INTERFACE(Icosahedron);
+DECLARE_SHAPE_INTERFACE(Octahedron);
void FGAPIENTRY glutWireSierpinskiSponge ( int num_levels, GLdouble offset[3], GLdouble scale )
{
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 );
-}
+DECLARE_SHAPE_INTERFACE(Tetrahedron);
/*** END OF FILE ***/