Histogram2dDD.h

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//# Histogram2dDD.h: 2d histogram DisplayData
//# Copyright (C) 2000,2001,2002
//# 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
//#
//# $Id$

#ifndef TRIALDISPLAY_HISTOGRAM2DDD_H
#define TRIALDISPLAY_HISTOGRAM2DDD_H

#include <casa/aips.h>
#include <lattices/Lattices/Lattice.h>
#include <lattices/Lattices/MaskedLattice.h>
#include <display/DisplayDatas/ActiveCaching2dDD.h>

namespace casacore{

        template <class T> class ImageInterface;
        template <class T> class LatticeStatistics;
        template <class T> class LatticeHistograms;
}

namespace casa { //# NAMESPACE CASA - BEGIN

        class Histogram2dDM;

// <summary>
// A DisplayData to draw histograms
// </summary>
//
// <use visibility=export>
//
// <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
// </reviewed>
//
// <prerequisite>
//   <li> DisplayData
//   <li> CachingDisplayData
//   <li> ActiveCaching2dDD
// </prerequisite>
//
// <etymology>
// </etymology>
// <synopsis>
//
// </synopsis>

        class Histogram2dDD : public ActiveCaching2dDD {

        public:

                // Constructor taking a pointer to an already constructed
                // ImageInterface.
                Histogram2dDD(const casacore::ImageInterface<casacore::Float> *image);

                // Constructor taking a pointer to an already constructed casacore::Table,
                // and a casacore::String indicating a column name.
                //Histogram2dDD(const casacore::Table *table, const casacore::String column);

                // Constructor taking a pointer to an Array.
                //Histogram2dDD(const casacore::Array<casacore::Float> *array);

                // Destructor.
                virtual ~Histogram2dDD();

                // Return the data unit.
                virtual const casacore::Unit dataUnit();

                // casacore::Format the histogram value at the given world position.
                virtual casacore::String showValue(const casacore::Vector<casacore::Double> &world);

                // Install the default options for this DisplayData.
                virtual void setDefaultOptions();

                // Apply options stored in <src>rec</src> to the DisplayData.  A
                // return value of <src>true</src> means a refresh is needed.
                // <src>recOut</src> contains any fields which were implicitly
                // changed as a result of the call to this function.
                virtual casacore::Bool setOptions(casacore::Record &rec, casacore::Record &recOut);

                // Retrieve the current and default options and parameter types.
                virtual casacore::Record getOptions( bool scrub=false ) const;

                // Return the type of this DisplayData.
                virtual Display::DisplayDataType classType() {
                        return Display::CanvasAnnotation;
                }

                // Create a new AxesDisplayMethod for drawing on the given
                // WorldCanvas when the AttributeBuffers are suitably matched to the
                // current state of this DisplayData and of the WorldCanvas/Holder.
                // The tag is a unique number used to identify the age of the newly
                // constructed CachingDisplayMethod.
                virtual CachingDisplayMethod *newDisplayMethod(WorldCanvas *worldCanvas,
                        AttributeBuffer *wchAttributes,
                        AttributeBuffer *ddAttributes,
                        CachingDisplayData *dd);

                // Return the current options of this DisplayData as an
                // AttributeBuffer.
                virtual AttributeBuffer optionsAsAttributes();

                // Provide read-only access to the Lattice.
                const casacore::Lattice<casacore::Float> &lattice() const {
                        return *itsMaskedLattice;
                }

                // Provide read-only access to the MaskedLattce.
                const casacore::MaskedLattice<casacore::Float> &maskedLattice() const {
                        return *itsMaskedLattice;
                }

        protected:

                // (Required) default constructor.
                Histogram2dDD();

                // (Required) copy constructor.
                Histogram2dDD(const Histogram2dDD &other);

                // (Required) copy assignment.
                void operator=(const Histogram2dDD &other);

        private:

                friend class Histogram2dDM;

                // The base image cloned at construction.
                casacore::ImageInterface<casacore::Float> *itsBaseImage;

                // The masked lattice, effectively referencing one of itsBaseImage,
                // ...
                casacore::MaskedLattice<casacore::Float> *itsMaskedLattice;

                // Object to use for calculating statistics.
                casacore::LatticeStatistics<casacore::Float> *itsLatticeStatistics;

                // Object ot use for calculating histograms.
                casacore::LatticeHistograms<casacore::Float> *itsLatticeHistograms;

        };


} //# NAMESPACE CASA - END

#endif