fireball/lib/geometries/IcosahedronGeometry.js

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2018-12-25 13:59:22 +00:00
/**
* @author timothypratley / https://github.com/timothypratley
* @author Mugen87 / https://github.com/Mugen87
*/
import { Geometry } from '../core/Geometry.js';
import { PolyhedronBufferGeometry } from './PolyhedronGeometry.js';
// IcosahedronGeometry
function IcosahedronGeometry( radius, detail ) {
Geometry.call( this );
this.type = 'IcosahedronGeometry';
this.parameters = {
radius: radius,
detail: detail
};
this.fromBufferGeometry( new IcosahedronBufferGeometry( radius, detail ) );
this.mergeVertices();
}
IcosahedronGeometry.prototype = Object.create( Geometry.prototype );
IcosahedronGeometry.prototype.constructor = IcosahedronGeometry;
// IcosahedronBufferGeometry
function IcosahedronBufferGeometry( radius, detail ) {
var t = ( 1 + Math.sqrt( 5 ) ) / 2;
var vertices = [
- 1, t, 0, 1, t, 0, - 1, - t, 0, 1, - t, 0,
0, - 1, t, 0, 1, t, 0, - 1, - t, 0, 1, - t,
t, 0, - 1, t, 0, 1, - t, 0, - 1, - t, 0, 1
];
var indices = [
0, 11, 5, 0, 5, 1, 0, 1, 7, 0, 7, 10, 0, 10, 11,
1, 5, 9, 5, 11, 4, 11, 10, 2, 10, 7, 6, 7, 1, 8,
3, 9, 4, 3, 4, 2, 3, 2, 6, 3, 6, 8, 3, 8, 9,
4, 9, 5, 2, 4, 11, 6, 2, 10, 8, 6, 7, 9, 8, 1
];
PolyhedronBufferGeometry.call( this, vertices, indices, radius, detail );
this.type = 'IcosahedronBufferGeometry';
this.parameters = {
radius: radius,
detail: detail
};
}
IcosahedronBufferGeometry.prototype = Object.create( PolyhedronBufferGeometry.prototype );
IcosahedronBufferGeometry.prototype.constructor = IcosahedronBufferGeometry;
export { IcosahedronGeometry, IcosahedronBufferGeometry };