import * as THREE from "three" ; /**
 * Usage in Modules:
 *
 * import { DebugContext, debugContext } from "../lib/DebugContext";
 *
 * Declare a debug option:
 * debugContext.settings.setOption("MY_DBG_OPT", "default");
 *
 * Access an option:
 * if (debugContext.settings.option("MY_DBG_OPT")) {
 *     ...
 * }
 *
 *
 * Access in browser console:
 *
 * window.__debugContext.settings.addEventListener("MY_DBG_OPT", function(event) {
 *  console.log("name:", event.type, "value:", event.value)});
 *
 */ /**
 * Allows access to the global `window` object here. The constructor of [[DebugContext]] adds the
 * instance to `window`, so it is available from the browser console.
 */ interface DebugInfo { __debugContext ? : DebugContext ; } const isNode = typeof window === "undefined" ; /**
 * A `DebugOption` is a pair that consists of an option value and an array of change listeners.
 * Listeners are called up when setting the option's value.
 */ class DebugOption extends THREE . EventDispatcher { static SET_EVENT_TYPE : string = "set" ; param value constructor ( public value ) { super ( ) ; } param value param name set ( value , name ) { this . value = value ; this . dispatchEvent ( { type : DebugOption . SET_EVENT_TYPE , name , value } ) ; } } /**
 * Maintains a map of [[DebugOption]]s. You can add listeners to debug options by passing their
 * names.
 */ export class DebugContext { private readonly m_optionsMap : Map < string , DebugOption > ; /**
     * Builds a `DebugContext`.
     */ constructor ( ) { this . m_optionsMap = new Map < string , DebugOption > ( ) ; if ( ! isNode && typeof window !== "undefined" && window ) { const debugInfo = window as DebugInfo ; debugInfo . __debugContext = this ; } } param name param value setValue ( name , value ) { let opt = this . m_optionsMap . get ( name ) ; if ( ! opt ) { opt = new DebugOption ( value ) ; this . m_optionsMap . set ( name , opt ) ; } else { opt . set ( value , name ) ; } } param name getValue ( name ) { const opt = this . m_optionsMap . get ( name ) ; return opt ? opt . value : undefined ; } param name hasOption ( name ) { return this . m_optionsMap . get ( name ) !== undefined ; } param name param listener addEventListener ( name , listener ) { const opt = this . m_optionsMap . get ( name ) ; if ( opt ) { opt . addEventListener ( DebugOption . SET_EVENT_TYPE , listener ) ; } else { throw Error ( "Unknown option: " + name ) ; } } param name param listener hasEventListener ( name , listener ) { const opt = this . m_optionsMap . get ( name ) ; if ( opt ) { return opt . hasEventListener ( DebugOption . SET_EVENT_TYPE , listener ) ; } else { throw Error ( "Unknown option: " + name ) ; } } param name param listener removeEventListener ( name , listener ) { const opt = this . m_optionsMap . get ( name ) ; if ( opt ) { opt . removeEventListener ( DebugOption . SET_EVENT_TYPE , listener ) ; } else { throw Error ( "Unknown option: " + name ) ; } } /**
     * Provides access to the options map. This method is useful for creating an automatic
     * browser GUI.
     */ get options ( ) : Map < string , any > { return this . m_optionsMap ; } /**
     * Clears away all debug options. Currently, `THREE.EventDispatcher` does not provide an API
     * to remove all event listeners.
     */ clear ( ) { this . m_optionsMap . forEach ( option => { option . set ( undefined , "" ) ; } ) ; } } export const debugContext = new DebugContext ( ) ;