Accueil / npm / three@0.186.1 / src / geometries / DodecahedronGeometry.js
DodecahedronGeometry.js
import { PolyhedronGeometry } from './PolyhedronGeometry.js';
/**
* A geometry class for representing a dodecahedron.
*
* ```js
* const geometry = new THREE.DodecahedronGeometry();
* const material = new THREE.MeshBasicMaterial( { color: 0xffff00 } );
* const dodecahedron = new THREE.Mesh( geometry, material );
* scene.add( dodecahedron );
* ```
*
* @augments PolyhedronGeometry
* @demo scenes/geometry-browser.html#DodecahedronGeometry
*/
class DodecahedronGeometry extends PolyhedronGeometry {
/**
* Constructs a new dodecahedron geometry.
*
* @param {number} [radius=1] - Radius of the dodecahedron.
* @param {number} [detail=0] - Setting this to a value greater than `0` adds vertices making it no longer a dodecahedron.
*/
constructor( radius = 1, detail = 0 ) {
const t = ( 1 + Math.sqrt( 5 ) ) / 2;
const r = 1 / t;
const vertices = [
// (±1, ±1, ±1)
- 1, - 1, - 1, - 1, - 1, 1,
- 1, 1, - 1, - 1, 1, 1,
1, - 1, - 1, 1, - 1, 1,
1, 1, - 1, 1, 1, 1,
// (0, ±1/φ, ±φ)
0, - r, - t, 0, - r, t,
0, r, - t, 0, r, t,
// (±1/φ, ±φ, 0)
- r, - t, 0, - r, t, 0,
r, - t, 0, r, t, 0,
// (±φ, 0, ±1/φ)
- t, 0, - r, t, 0, - r,
- t, 0, r, t, 0, r
];
const indices = [
3, 11, 7, 3, 7, 15, 3, 15, 13,
7, 19, 17, 7, 17, 6, 7, 6, 15,
17, 4, 8, 17, 8, 10, 17, 10, 6,
8, 0, 16, 8, 16, 2, 8, 2, 10,
0, 12, 1, 0, 1, 18, 0, 18, 16,
6, 10, 2, 6, 2, 13, 6, 13, 15,
2, 16, 18, 2, 18, 3, 2, 3, 13,
18, 1, 9, 18, 9, 11, 18, 11, 3,
4, 14, 12, 4, 12, 0, 4, 0, 8,
11, 9, 5, 11, 5, 19, 11, 19, 7,
19, 5, 14, 19, 14, 4, 19, 4, 17,
1, 12, 14, 1, 14, 5, 1, 5, 9
];
super( vertices, indices, radius, detail );
this.type = 'DodecahedronGeometry';
/**
* Holds the constructor parameters that have been
* used to generate the geometry. Any modification
* after instantiation does not change the geometry.
*
* @type {Object}
*/
this.parameters = {
radius: radius,
detail: detail
};
}
/**
* Factory method for creating an instance of this class from the given
* JSON object.
*
* @param {Object} data - A JSON object representing the serialized geometry.
* @return {DodecahedronGeometry} A new instance.
*/
static fromJSON( data ) {
return new DodecahedronGeometry( data.radius, data.detail );
}
}
export { DodecahedronGeometry };