Mask Track Offset Position expression

gistfile1.txt

//input variables - pickwhip tPath to your path and offsetPos to your null or expression controller
var tPath = mask("Mask 1").maskPath;
var offsetPos=effect("Mask Position Offset")("Point");

var tPoints=[];
var InTan=[];
var OutTan=[];
var mPos=offsetPos-[thisComp.width/2,thisComp.height/2];
var tClosed=tPath.isClosed();

for(i=0;i<(tPath.points().length);i++)
{
	tPoints.push([tPath.points()[i][0]+mPos[0],[tPath.points()[i][1]+mPos[1]]],);
	InTan.push([tPath.inTangents()[i][0],[tPath.inTangents()[i][1]]],);
	OutTan.push([tPath.outTangents()[i][0],[tPath.outTangents()[i][1]]],);
}

createPath(tPoints, InTan, OutTan,tClosed)