/**

 * This script will add markers at regular intervals,

 * but only at events on the selected track, and only at 

 * event boundaries.

 *

 * Based on a script by: Edward Troxel

 * Written by John Meyer February 1, 2007

 **/



import System;

import System.IO;

import System.Windows.Forms;

import Sony.Vegas;



//Change this value to be the desired interval

//Format:  hh:mm:ss:ff (hours:minutes:seconds:frames)

  var Interval = "00:00:55:00";



try {

  var myMarker : Marker;

  var IncTime  : Timecode = new Timecode(Interval);

  var CurrTime : Timecode = IncTime;



  //Find the selected event

  var track = FindSelectedTrack();

  if (null == track)

      throw "no selected track";



  for (var evnt in track.Events) {

    if ( CurrTime <= evnt.Start ){

      //Put a marker at the start point

      if ( !MarkerExist(evnt.Start.ToMilliseconds()) ) {

        myMarker = new Marker(evnt.Start);

        Vegas.Project.Markers.Add(myMarker);

      }

      CurrTime = evnt.Start + IncTime;

    } // End if CurrTime

  }  // End for var evnt







} catch (e) {

    MessageBox.Show(e);

}





function FindSelectedTrack() : Track {

  var trackEnum = new Enumerator(Vegas.Project.Tracks);

  while (!trackEnum.atEnd()) {

    var track : Track = Track(trackEnum.item());

    if (track.Selected) {

        return track;

    }

    trackEnum.moveNext();

  }

  return null;

}







// Function to check if there is a marker at timecode passed to this function

// Timecode (dStart) must be in milliseconds

function MarkerExist (dStart) : boolean {



  var fmarkerEnum = new Enumerator(Vegas.Project.Markers);



  while (!fmarkerEnum.atEnd()) {

    var fMyMarker = fmarkerEnum.item();        

    var fMarkerStart = fMyMarker.Position.ToMilliseconds();

    if ( dStart == fMarkerStart ) {

      return 1;

    }



  fmarkerEnum.moveNext();



  } // End while fmarkerEnum



  return 0;

}