importBoujouTracking.jsx

//Import Boujou 2d tracks to AE
//CC-BY Nik Ska, 2014

var parseBoujou = this;

parseBoujou.go = function(){

	function createNull(comp, _name){
		var newTrackNull = comp.layers.addNull();
    	newTrackNull.name = "Boujou Null_" + _name;
    	newTrackNull.threeDLayer = true;
    	newTrackNull.label = 10;
    	return newTrackNull;
	}

	var textFile = File.openDialog ("Choose a tracking data file","*.txt");

	if (textFile != null) {
	    var textLines = [];
	    textFile.open("r"); 

		while (!textFile.eof){
		    //reading file into lines
		    textLines.push(textFile.readln()); 
		}

		var activeComp = app.project.activeItem;
		if(activeComp && activeComp instanceof CompItem){
			app.beginUndoGroup("Parse Boujou");

			//regex to break line into segments
			//null number / frame number / X / Y
			var lineMatch = /(\S+(\s || $))/g;
			var namelineMatch = /(\d+)/;

			for(var t = 1; t<textLines.length; t++){
				if(t>5){ //boujou file header is 5 lines long
					var parsed = textLines[t].match(lineMatch);
					var nullNum = textLines[t].match(nameMatch)[1];
					//check for existing null
					var curNull = activeComp.layer("Boujou Null_"+nullNum);
					//create one if there is no null
					if(!curNull) curNull = createNull(activeComp, nullNum);

					if(parsed){
						// $.writeln(textLines[t].match(XYmatch))
						// $.writeln(Number(parsed[2]), ", ", Number(parsed[3]));;

						curNull.property("ADBE Transform Group").property("ADBE Position").setValueAtTime(Number(parsed[1]-1)*activeComp.frameDuration, [Number(parsed[2]), Number(parsed[3]),0]);
					}
				}
			}
		}
		app.endUndoGroup();
	}
}

parseBoujou.go();