Utils.h

Classes

IChangeDetector -- (full description)

ParAngleChangeDetector -- (full description)

struct IChangeDetector

Interface

virtual Bool changed(const VisBuffer &vb, Int row) const throw(AipsError) = 0

virtual void update(const VisBuffer &vb, Int row) throw(AipsError) = 0

virtual void reset() throw(AipsError) = 0

Bool changed(const VisBuffer &vb) const throw(AipsError)

Bool changedBuffer(const VisBuffer &vb, Int row1, Int &row2) const throw(AipsError)

Protected Members

virtual ~IChangeDetector() throw(AipsError)

Description

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An interface class to detect changes in the VisBuffer Exact meaning of the "change" is defined in the derived classes

Member Description

virtual Bool changed(const VisBuffer &vb, Int row) const throw(AipsError) = 0

return True if a change occurs in the given row since the last call of update

virtual void update(const VisBuffer &vb, Int row) throw(AipsError) = 0

start looking for a change from the given row of the VisBuffer

virtual void reset() throw(AipsError) = 0

reset to the state which exists just after construction

Bool changed(const VisBuffer &vb) const throw(AipsError)

some derived methods, which use the abstract virtual function changed(vb,row)

return True if a change occurs somewhere in the buffer

Bool changedBuffer(const VisBuffer &vb, Int row1, Int &row2) const throw(AipsError)

return True if a change occurs somewhere in the buffer starting from row1 up to row2 (row2=-1 means up to the end of the buffer). The row number, where the change occurs is returned in the row2 parameter

virtual ~IChangeDetector() throw(AipsError)

a virtual destructor to make the compiler happy

class ParAngleChangeDetector : public IChangeDetector

Interface

Public Members

ParAngleChangeDetector():pa_tolerance_p(0.0)

ParAngleChangeDetector(const Quantity &pa_tolerance) throw(AipsError)

virtual void setTolerance(const Quantity &pa_tolerance)

virtual void reset() throw(AipsError)

Quantity getParAngleTolerance() const throw(AipsError)

virtual Bool changed(const VisBuffer &vb, Int row) const throw(AipsError)

virtual void update(const VisBuffer &vb, Int row) throw(AipsError)

Description

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ParAngleChangeDetector - a class to detect a change in the parallactic angle.