47 lines
525 B
JavaScript
47 lines
525 B
JavaScript
|
/**
|
||
|
|
* @author mrdoob / http://mrdoob.com/
|
||
|
|
*/
|
||
|
|
|
||
|
|
function Layers() {
|
||
|
|
|
||
|
|
this.mask = 1 | 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
Object.assign( Layers.prototype, {
|
||
|
|
|
||
|
|
set: function ( channel ) {
|
||
|
|
|
||
|
|
this.mask = 1 << channel | 0;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
enable: function ( channel ) {
|
||
|
|
|
||
|
|
this.mask |= 1 << channel | 0;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
toggle: function ( channel ) {
|
||
|
|
|
||
|
|
this.mask ^= 1 << channel | 0;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
disable: function ( channel ) {
|
||
|
|
|
||
|
|
this.mask &= ~ ( 1 << channel | 0 );
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
test: function ( layers ) {
|
||
|
|
|
||
|
|
return ( this.mask & layers.mask ) !== 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
|
||
|
|
export { Layers };
|