/usr/include/magics/PointsHandler.h is in libmagics++-dev 3.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* (C) Copyright 1996-2016 ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
* In applying this licence, ECMWF does not waive the privileges and immunities
* granted to it by virtue of its status as an intergovernmental organisation nor
* does it submit to any jurisdiction.
*/
/*! \file PointsHandler.h
\brief Definition of the Template class PointsHandler.
Magics Team - ECMWF 2004
Started: Tue 20-Jan-2004
Changes:
*/
#ifndef PointsHandler_H
#define PointsHandler_H
#include "magics.h"
#include "BasePointsHandler.h"
#include "Transformation.h"
namespace magics {
class PointsHandler: public AbstractPoints {
public:
PointsHandler(AbstractPoints& handler):handler_(handler) {}
virtual ~PointsHandler() {}
//! Method to set the current position to the first point.(abstract)
virtual void setToFirst() { handler_.setToFirst(); }
//! Method to test the end of collection.
virtual bool more() { return handler_.more(); }
//! Method to return the current value
virtual const UserPoint& current() { return handler_.current(); }
//! Method to advance
virtual void advance() { handler_.advance(); }
virtual bool empty() { handler_.setToFirst(); return handler_.more() == false; }
protected:
//! Method to print string about this class on to a stream of type ostream (virtual).
virtual void print(ostream& out) const { out << "PointsHandler on " << handler_; }
AbstractPoints& handler_;
private:
//! Copy constructor - No copy allowed
PointsHandler(const PointsHandler&);
//! Overloaded << operator to copy - No copy allowed
PointsHandler& operator=(const PointsHandler&);
// -- Friends
//! Overloaded << operator to call print().
friend ostream& operator<<(ostream& s,const PointsHandler& p)
{ p.print(s); return s; }
};
class BatchPointsHandler : public PointsHandler
{
public:
BatchPointsHandler(AbstractPoints& handler, int count):
PointsHandler(handler), count_(count), more_(0), last_(false) {}
virtual ~BatchPointsHandler() {}
//! Method to set the current position to the first point.(abstract)
virtual void setToFirst() {}
//! Method to test the end of collection.
virtual bool more()
{
if ( last_ ) {
last_ = false;
return false;
}
//MagLog::debug() << "batch " << more_ << "\n";
if (more_++ < count_) return this->handler_.more();
last_ = true;
return true;
}
//! Method to return the current value
virtual const UserPoint& current() { return this->handler_.current(); }
//! Method to advance
virtual void advance() { this->handler_.advance(); }
protected:
//! Method to print string about this class on to a stream of type ostream (virtual).
virtual void print(ostream& out) const { out << "BatchPointsHandler(" << count_ << "items) on " << this->handler_; }
int count_;
mutable int more_;
mutable bool last_;
private:
//! Copy constructor - No copy allowed
BatchPointsHandler(const BatchPointsHandler&);
//! Overloaded << operator to copy - No copy allowed
BatchPointsHandler& operator=(const BatchPointsHandler&);
// -- Friends
//! Overloaded << operator to call print().
friend ostream& operator<<(ostream& s,const BatchPointsHandler& p)
{ p.print(s); return s; }
};
class BoxPointsHandler : public PointsHandler
{
public:
BoxPointsHandler(AbstractPoints& handler, const Transformation& transformation, bool filter) :
PointsHandler(handler),
transformation_(transformation),
filter_(filter) {}
virtual ~BoxPointsHandler() {}
//! Method to set the current position to the first point.(abstract)
virtual void setToFirst() ;
//! Method to test the end of collection.
virtual bool more()
{
return more_;
}
//! Method to return the current value
virtual UserPoint& current() { return current_; }
//! Method to advance
virtual void advance() ;
protected:
//! Method to print string about this class on to a stream of type ostream (virtual).
virtual void print(ostream& out) const { out << "BocPointsHandler() on " << this->handler_; }
const Transformation& transformation_;
mutable std::stack<UserPoint> duplicates_;
mutable UserPoint current_;
mutable bool more_;
bool filter_; // Do no send the point if they are outside the transformation view!
};
class ThinningPointsHandler : public PointsHandler
{
public:
ThinningPointsHandler(AbstractPoints& handler, int xfreq, int yfreq):
PointsHandler(handler),
xfreq_(xfreq), yfreq_(yfreq) {
}
virtual ~ThinningPointsHandler() {}
//! Method to set the current position to the first point.(abstract)
virtual void setToFirst();
//! Method to test the end of collection.
virtual bool more()
{
return more_;
}
//! Method to return the current value
virtual const UserPoint& current() { return current_; }
//! Method to advance
virtual void advance() ;
protected:
//! Method to print string about this class on to a stream of type ostream (virtual).
virtual void print(ostream& out) const { out << "BocPointsHandler() on " << this->handler_; }
mutable int xfreq_;
mutable int yfreq_;
mutable map<double, map<double, UserPoint> > data_;
map<double, map<double, UserPoint> >::iterator y_;
map<double, UserPoint>::iterator x_;
mutable UserPoint current_;
mutable bool more_;
};
} // namespace magics
#endif
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