three 基础库
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import { FloatNode } from '../inputs/FloatNode.js';
import { NodeLib } from '../core/NodeLib.js';
class TimerNode extends FloatNode {
constructor( scale, scope, timeScale ) {
super();
this.scale = scale !== undefined ? scale : 1;
this.scope = scope || TimerNode.GLOBAL;
this.timeScale = timeScale !== undefined ? timeScale : scale !== undefined;
}
getReadonly() {
// never use TimerNode as readonly but aways as "uniform"
return false;
}
getUnique() {
// share TimerNode "uniform" input if is used on more time with others TimerNode
return this.timeScale && ( this.scope === TimerNode.GLOBAL || this.scope === TimerNode.DELTA );
}
updateFrame( frame ) {
const scale = this.timeScale ? this.scale : 1;
switch ( this.scope ) {
case TimerNode.LOCAL:
this.value += frame.delta * scale;
break;
case TimerNode.DELTA:
this.value = frame.delta * scale;
break;
default:
this.value = frame.time * scale;
}
}
copy( source ) {
super.copy( source );
this.scope = source.scope;
this.scale = source.scale;
this.timeScale = source.timeScale;
return this;
}
toJSON( meta ) {
const data = super.toJSON( meta );
data.scope = this.scope;
data.scale = this.scale;
data.timeScale = this.timeScale;
return data;
}
}
TimerNode.GLOBAL = 'global';
TimerNode.LOCAL = 'local';
TimerNode.DELTA = 'delta';
TimerNode.prototype.nodeType = 'Timer';
NodeLib.addKeyword( 'time', function () {
return new TimerNode();
} );
export { TimerNode };