Hi Marco, yes I think it's possible to use the Fillet factory to get corner points, there is a custom method .generateVertices() on the fillet factory, you can use it like this to get an object list of point objects, one at each sharp corner of the curve:

function GetCorners( crvs )
{
	var factory = moi.command.createFactory( 'fillet' );
	
	factory.setInput( 0, crvs ); // Set an object list with one curve in it.
	factory.generateVertices();

	var corners = factory.getCreatedObjects();
	
	factory.cancel();
	
	return corners;
}

function TestGetCorners()
{
	var crvs = moi.geometryDatabase.getSelectedObjects().getCurves();
	if ( crvs.length != 1 )
	{
		moi.ui.alert( 'Select a curve before running this command.' );
		return;
	}
	
	var corners = GetCorners( crvs );
	
	moi.ui.alert( 'Got ' + corners.length + ' corners' );
}	

TestGetCorners();

- Michael