XProfan

// mirrors / Spiegel: Typ: wall-..  IMPORTANT! define after walls / WICHTIG! nach Wänden definieren
// 'rectangle', x,z, y position, w, h,                y-rotation°,  (tilt°/Neigung°), ([color])  (optional)
// 'polygon',   x,z, y position, radius, n.rotation°, y-rotation°,  (tilt°/Neigung°), ([color])  (optional)
// 'wall-rectangle', wall-index, left, btm, w, h,           wall-d, (tilt°/Neigung°), ([color])  (optional)
// 'wall-polygon',   wall-index, left, btm, r, n.rotation°, wall-d, (tilt°/Neigung°), ([color])  (optional)
mirrors = [
['rectangle', 10,11, 2.5,  3.2, 2.12,  -45,  5 ],    // 0
['polygon',    7,10, 1.2,  1.8, 18.025 , 60, 30 ],        // 1
['wall-rectangle', 7, 0.2, 0.9, 1.8,1.4, 0.5, 10, [2] ],  // 2
['wall-polygon', 7, 3.2, 0.9, 1.1, 6.030, 0.5, 10   ]     // 3
];
...

switch ( type ) {

    case'rectangle':
    case'polygon':
    case'wall-rectangle':
    case'wall-polygon':

let m = [];// materials
let mm = [];// multi materials
let vt = [];// vertices
let uv = [];
let geometries = [];
let meshes = [];
...

for ( let i = 0; i < m.length; i ++ ) {

    m[ i ].unshift( i )// insert index at the front of the material definition, used for vt, uv  index
    vt.push( [] );//  vertices array for each material
    uv.push( [] );//  uv's array for each material

}

for ( let i = 0; i < m.length; i ++ ) {

    if ( vt[ i ].length > 0 ) {// only used materials

        geometries[ i ] = new THREE.BufferGeometry();
        geometries[ i ].setAttribute('position', new THREE.BufferAttribute( new Float32Array( vt[ i ] ), 3 ) );
        geometries[ i ].setAttribute('uv', new THREE.BufferAttribute( new Float32Array( uv[ i ] ), 2 ) );
        geometries[ i ].computeVertexNormals();
        meshes[ i ] = new THREE.Mesh( geometries[ i ], getMaterial( m[ i ] ) );
        scene.add( meshes[ i ] );

    } else {

        geometries[ i ] = null;
        meshes[ i ]  = null;

    }

}

// shell functions for components (diameter to height)
// functions:  dH[i] = h => term;   def[0,1] => value[0,1]    (dHdefault = h => 1)
dH[0] = h =>  0.5 + 0.25 * sin( 16 * h );
dH[1] = h => 1 - 0.25 * h;
dH[2] = h => 0.2 + sqrt( h );
dH[3] = h => tan( 1 - 0.7 * h );
// components:
// x,z -center,  y0 bottom ,y1 top, radial, height -detail, mm[ i ] (,shell function ) (,rotation angle° )   ( optional )
// mm[] - mantle, top, bottom / Mantel, Deckel, Boden
components = [
[ 7,15, 0.1,1.1, 4,144, mm[14], dH[0], 28 ],// 0
];