| export class PrimitivePool { | |
| constructor( getNewPrimitive ) { | |
| this._getNewPrimitive = getNewPrimitive; | |
| this._primitives = []; | |
| } | |
| getPrimitive() { | |
| const primitives = this._primitives; | |
| if ( primitives.length === 0 ) { | |
| return this._getNewPrimitive(); | |
| } else { | |
| return primitives.pop(); | |
| } | |
| } | |
| releasePrimitive( primitive ) { | |
| this._primitives.push( primitive ); | |
| } | |
| } | |