casa::DDDPolygon Class Reference

Implementation of aan ellipse object for DrawingDisplayData class. More...

#include <DDDPolygon.h>

Inheritance diagram for casa::DDDPolygon:

Public Member Functions
	DDDPolygon (const Record &description, DrawingDisplayData *owner)
	Constructor taking a Record description.
virtual	~DDDPolygon ()
	Destructor.
virtual void	draw (const Display::RefreshReason &reason, WorldCanvas *worldcanvas)
	Draw this rectangle object for the given reason on the provided WorldCanvas.
virtual Record	description ()
	Return a record describing this object.
virtual void	setDescription (const Record &rec)
	Update this object based on the information in the provided Record.
virtual void	operator() (const WCRefreshEvent &)
	Event handlers.
virtual void	operator() (const WCPositionEvent &ev)
	Default just prints the event to cout.
virtual void	operator() (const WCMotionEvent &ev)
	default sends event to cout
Protected Member Functions
	DDDPolygon ()
	(Required) default constructor.
	DDDPolygon (const DDDPolygon &other)
	(Required) copy constructor.
void	operator= (const DDDPolygon &other)
	(Required) copy assignment.
Private Member Functions
void	convertToPixel ()
	COnvert parameters from world to pixel.
void	updateWorldValues ()
	Update private world parameters from current pixel values.
void	decode (const RecordInterface &description, Bool required)
	Decode record into private data.
void	encode (RecordInterface &description) const
	Encode private data into record.
void	createCorners ()
	compute corners of rectangle of bounding box of polygon
void	createHandles ()
	create handles, one per vertex
void	listWorld ()
	Debugging routines.
void	listPixel ()
Private Attributes
Bool	itsOutline
	Fill style.
Quantum< Vector< Double > >	itsWorldX
	Define x and y.
Quantum< Vector< Double > >	itsWorldY
Vector< Double >	itsPixelX
Vector< Double >	itsPixelY
uInt	itsNPoints
Matrix< Double >	itsCorners
	Rotated Rectangle Corners to draw in screen pixel.
Block< DDDHandle >	itsHandles
	List of handles.
DDDObject::Mode	itsMode
	Mode.
Double	itsBaseMoveX
	Store for movement bases.
Double	itsBaseMoveY
Bool	itsRecompute
	In function draw(), recompute all pixel coordinates when true else use what is currently set.
LogIO	itsLogger
	LOgger.
DisplayCoordinateSystem	itsCoordinateSystem
	DisplayCoordinateSystem in screen pixel coordinates.
WorldCanvas *	itsWorldCanvasPtr
	pointer to world canvas (shallow copy)
Bool	itsFracX
	Fractional indicators.
Bool	itsFracY

Detailed Description

Implementation of aan ellipse object for DrawingDisplayData class.

Synopsis

This class implements the interface defined by DDDObject, to provide a polygon object for registration with DrawingDisplayData objects.

Definition at line 62 of file DDDPolygon.h.

Constructor & Destructor Documentation

casa::DDDPolygon::DDDPolygon	(	const Record &	description,
		DrawingDisplayData *	owner
	)

Constructor taking a Record description.

Fields in the record, on top of what is consumed by the DDDObject constructor, are: Required : x (quantum of vector double) and y (quantum of vector double). Other, not required fields are outline & editable which default to True. When editable=False the object can be moved but not reshaped, when True it can be moved and reshaped. When outline=False the ellipse is filled.