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- /**
- * @author mrdoob / http://mrdoob.com/
- */
- function Layers() {
- this.mask = 1;
- }
- Layers.prototype = {
- constructor: Layers,
- set: function ( channel ) {
- this.mask = 1 << channel;
- },
- enable: function ( channel ) {
- this.mask |= 1 << channel;
- },
- toggle: function ( channel ) {
- this.mask ^= 1 << channel;
- },
- disable: function ( channel ) {
- this.mask &= ~ ( 1 << channel );
- },
- test: function ( layers ) {
- return ( this.mask & layers.mask ) !== 0;
- },
- clone: function ( ) {
- return new Layers().copy( this );
- },
- copy: function ( source ) {
- this.mask = source.mask;
- return this;
- }
- };
- export { Layers };
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