Source
//# PassiveCachingDD.h: passive implementation of a CachingDisplayData
//# Copyright (C) 1999,2000,2001,2002,2003
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
namespace casa { //# NAMESPACE CASA - BEGIN
// <summary>
// Class providing passive behaviour for CachingDisplayDatas.
// </summary>
// <synopsis>
// A "passive" DisplayData is one which can only be used in
// conjunction with another non-passive DisplayData. As such, it will
// not negotiate coordinates on a WorldCanvas, nor will it provide
// coordinate conversion capabilities.
// </synopsis>
class PassiveCachingDD : public CachingDisplayData {
public:
// Constructor.
PassiveCachingDD();
// Destructor.
virtual ~PassiveCachingDD();
// casacore::Coordinate transformation handlers, called by WorldCanvasHolder.
// These functions simply return false because this DisplayData is
// passive.
// <group>
virtual casacore::Bool linToWorld(casacore::Vector<casacore::Double> &world, const casacore::Vector<casacore::Double> &lin);
virtual casacore::Bool worldToLin(casacore::Vector<casacore::Double> &lin, const casacore::Vector<casacore::Double> &world);