95/src/geometries/DodecahedronGeometry.js

/**
 * @author Abe Pazos / https://hamoid.com
 * @author Mugen87 / https://github.com/Mugen87
 */

import { Geometry } from '../core/Geometry.js';
import { PolyhedronBufferGeometry } from './PolyhedronGeometry.js';

// DodecahedronGeometry

function DodecahedronGeometry( radius, detail ) {

	Geometry.call( this );

	this.type = 'DodecahedronGeometry';

	this.parameters = {
		radius: radius,
		detail: detail
	};

	this.fromBufferGeometry( new DodecahedronBufferGeometry( radius, detail ) );
	this.mergeVertices();

}

DodecahedronGeometry.prototype = Object.create( Geometry.prototype );
DodecahedronGeometry.prototype.constructor = DodecahedronGeometry;

// DodecahedronBufferGeometry

function DodecahedronBufferGeometry( radius, detail ) {

	var t = ( 1 + Math.sqrt( 5 ) ) / 2;
	var r = 1 / t;

	var 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
	];

	var 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
	];

	PolyhedronBufferGeometry.call( this, vertices, indices, radius, detail );

	this.type = 'DodecahedronBufferGeometry';

	this.parameters = {
		radius: radius,
		detail: detail
	};

}

DodecahedronBufferGeometry.prototype = Object.create( PolyhedronBufferGeometry.prototype );
DodecahedronBufferGeometry.prototype.constructor = DodecahedronBufferGeometry;


export { DodecahedronGeometry, DodecahedronBufferGeometry };