📄 shapes.c
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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 GLUTAPIENTRY 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 = 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 GLUTAPIENTRY 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, 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,-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, 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,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glEnd();#undef RADIUS}/* * */void GLUTAPIENTRY 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, 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,-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, 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,-RADIUS, 0.0 ); glVertex3d( 0.0, 0.0,-RADIUS ); glEnd();#undef RADIUS}/* * */void GLUTAPIENTRY glutWireTetrahedron( void ){ /* 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. */ double r0[3] = { 1.0, 0.0, 0.0 } ; double r1[3] = { -0.333333333333, 0.942809041582, 0.0 } ; double r2[3] = { -0.333333333333, -0.471404520791, 0.816496580928 } ; double r3[3] = { -0.333333333333, -0.471404520791, -0.816496580928 } ; glBegin( GL_LINE_LOOP ) ; glNormal3d ( -1.0, 0.0, 0.0 ) ; glVertex3dv ( r1 ) ; glVertex3dv ( r3 ) ; glVertex3dv ( r2 ) ; glNormal3d ( 0.333333333333, -0.942809041582, 0.0 ) ; glVertex3dv ( r0 ) ; glVertex3dv ( r2 ) ; glVertex3dv ( r3 ) ; glNormal3d ( 0.333333333333, 0.471404520791, -0.816496580928 ) ; glVertex3dv ( r0 ) ; glVertex3dv ( r3 ) ; glVertex3dv ( r1 ) ; glNormal3d ( 0.333333333333, 0.471404520791, 0.816496580928 ) ; glVertex3dv ( r0 ) ; glVertex3dv ( r1 ) ; glVertex3dv ( r2 ) ; glEnd() ;}/* * */void GLUTAPIENTRY glutSolidTetrahedron( void ){ /* 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. */ double r0[3] = { 1.0, 0.0, 0.0 } ; double r1[3] = { -0.333333333333, 0.942809041582, 0.0 } ; double r2[3] = { -0.333333333333, -0.471404520791, 0.816496580928 } ; double r3[3] = { -0.333333333333, -0.471404520791, -0.816496580928 } ; glBegin( GL_TRIANGLES ) ; glNormal3d ( -1.0, 0.0, 0.0 ) ; glVertex3dv ( r1 ) ; glVertex3dv ( r3 ) ; glVertex3dv ( r2 ) ; glNormal3d ( 0.333333333333, -0.942809041582, 0.0 ) ; glVertex3dv ( r0 ) ; glVertex3dv ( r2 ) ; glVertex3dv ( r3 ) ; glNormal3d ( 0.333333333333, 0.471404520791, -0.816496580928 ) ; glVertex3dv ( r0 ) ; glVertex3dv ( r3 ) ; glVertex3dv ( r1 ) ; glNormal3d ( 0.333333333333, 0.471404520791, 0.816496580928 ) ; glVertex3dv ( r0 ) ; glVertex3dv ( r1 ) ; glVertex3dv ( r2 ) ; 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 GLUTAPIENTRY 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 GLUTAPIENTRY 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 GLUTAPIENTRY 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 GLUTAPIENTRY 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 () ;}#define NUM_FACES 4static GLdouble tetrahedron_v[4][3] = /* Vertices */{ { -0.5, -0.288675134595, -0.144337567297 }, { 0.5, -0.288675134595, -0.144337567297 }, { 0.0, 0.577350269189, -0.144337567297 }, { 0.0, 0.0, 0.672159013631 }} ;static GLint tetrahedron_i[4][3] = /* Vertex indices */{ { 0, 1, 2 }, { 0, 2, 3 }, { 0, 3, 1 }, { 1, 3, 2 }} ;static GLdouble tetrahedron_n[4][3] = /* Normals */{ { 0.0, 0.0, -1.0 }, { -0.816496580928, 0.471404520791, 0.333333333333 }, { 0.0, -0.942809041582, 0.333333333333 }, { 0.816496580928, 0.471404520791, 0.333333333333 }} ;void GLUTAPIENTRY glutWireSierpinskiSponge ( int num_levels, GLdouble offset[3], GLdouble scale ){ int i, j ; if ( num_levels == 0 ) { for ( i = 0 ; i < NUM_FACES ; i++ ) { glBegin ( GL_LINE_LOOP ) ; glNormal3dv ( tetrahedron_n[i] ) ; for ( j = 0; j < 3; j++ ) { double x = offset[0] + scale * tetrahedron_v[tetrahedron_i[i][j]][0] ; double y = offset[1] + scale * tetrahedron_v[tetrahedron_i[i][j]][1] ; double z = offset[2] + scale * tetrahedron_v[tetrahedron_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 ; local_offset[0] = offset[0] + scale * tetrahedron_v[0][0] ; local_offset[1] = offset[1] + scale * tetrahedron_v[0][1] ; local_offset[2] = offset[2] + scale * tetrahedron_v[0][2] ; glutWireSierpinskiSponge ( num_levels, local_offset, scale ) ; local_offset[0] += scale ; glutWireSierpinskiSponge ( num_levels, local_offset, scale ) ; local_offset[0] -= 0.5 * scale ; local_offset[1] += 0.866025403784 * scale ; glutWireSierpinskiSponge ( num_levels, local_offset, scale ) ; local_offset[1] -= 0.577350269189 * scale ; local_offset[2] += 0.816496580928 * scale ; glutWireSierpinskiSponge ( num_levels, local_offset, scale ) ; }}void GLUTAPIENTRY glutSolidSierpinskiSponge ( int num_levels, GLdouble offset[3], GLdouble scale ){ int i, j ; if ( num_levels == 0 ) { glBegin ( GL_TRIANGLES ) ; for ( i = 0 ; i < NUM_FACES ; i++ ) { glNormal3dv ( tetrahedron_n[i] ) ; for ( j = 0; j < 3; j++ ) { double x = offset[0] + scale * tetrahedron_v[tetrahedron_i[i][j]][0] ; double y = offset[1] + scale * tetrahedron_v[tetrahedron_i[i][j]][1] ; double z = offset[2] + scale * tetrahedron_v[tetrahedron_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 ; local_offset[0] = offset[0] + scale * tetrahedron_v[0][0] ; local_offset[1] = offset[1] + scale * tetrahedron_v[0][1] ; local_offset[2] = offset[2] + scale * tetrahedron_v[0][2] ; glutSolidSierpinskiSponge ( num_levels, local_offset, scale ) ; local_offset[0] += scale ; glutSolidSierpinskiSponge ( num_levels, local_offset, scale ) ; local_offset[0] -= 0.5 * scale ; local_offset[1] += 0.866025403784 * scale ; glutSolidSierpinskiSponge ( num_levels, local_offset, scale ) ; local_offset[1] -= 0.577350269189 * scale ; local_offset[2] += 0.816496580928 * scale ; glutSolidSierpinskiSponge ( num_levels, local_offset, scale ) ; }}#undef NUM_FACES/*** END OF FILE ***/⌨️ 快捷键说明
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