keys

Web3D/VR

[] readme course preface 1 2 3 4 5 6 7 reference examples resources

extern


  
  #@extern @vr-extern-monitor.wrl

proto


  
  PROTO keyboard [
  eventOut MFString string
  ]{

body


  DEF KEYBOARD_INTERFACE Script {
      field    SFNode   me          USE KEYBOARD_INTERFACE
  
      field    SFInt32  oldMask     0
  
      eventIn  SFNode   onEvent
      eventOut MFString string IS string

functions


      url "vrmlscript:
          function initialize()
          {
              // tell what events
              oldMask = Browser.eventMask;
              //Browser.eventMask = 1<<5; // KeyDown Only...
              Browser.eventMask = ((1<<5) | (1<<6)); // KeyDown and KeyUp
              // add event observer
              Browser.addRoute(Browser,'event_changed',me,'onEvent');
          }
          function shutdown()
          {
              // remove event observer
              Browser.eventMask = oldMask;
              Browser.deleteRoute(Browser,'event_changed',me,'onEvent');
          }

events


          function onEvent(e,t) {
              if(e.type == 'keydown') {
              str = 'press: ' + e.keyCode;
              //print(str);
              string = new MFString(str);
              e.returnValue = false; // no further processing
              } else  if(e.type == 'keyup') {
              str = 'release: ' + e.keyCode;
              //print(str);
              string = new MFString(str);
              e.returnValue = false; // no further processing
              } 
          }
      "
  }
  
  }
  
  Viewpoint { position 0 0 10 }
  DEF keyboard keyboard { }
  DEF monitor monitor { string [ "hit a key" "(click to focus)" ] }
  
  ROUTE keyboard.string TO monitor.string

[] readme course preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthoughts appendix references examples resources _

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