player/js/utils/shapes/shapePathBuilder.js

var buildShapeString = function(pathNodes, length, closed, mat) {
	if(length === 0) {
            return '';
        }
        var _o = pathNodes.o;
        var _i = pathNodes.i;
        var _v = pathNodes.v;
        var i, shapeString = ' M' + mat.applyToPointStringified(_v[0][0], _v[0][1]);
        for(i = 1; i < length; i += 1) {
            shapeString += ' C' + mat.applyToPointStringified(_o[i - 1][0], _o[i - 1][1]) + ' ' + mat.applyToPointStringified(_i[i][0], _i[i][1]) + ' ' + mat.applyToPointStringified(_v[i][0], _v[i][1]);
        }
        if (closed && length) {
            shapeString += ' C' + mat.applyToPointStringified(_o[i - 1][0], _o[i - 1][1]) + ' ' + mat.applyToPointStringified(_i[0][0], _i[0][1]) + ' ' + mat.applyToPointStringified(_v[0][0], _v[0][1]);
            shapeString += 'z';
        }
        return shapeString;
}