Implementation of an ellipse/rectangle object for DrawingDisplayData class. More...

#include <DDDEllipse.h>

Inheritance diagram for casa::DDDEllipse:

Public Member Functions
	DDDEllipse (const Record &description, DrawingDisplayData *owner)
	Constructor taking a Record description.
virtual	~DDDEllipse ()
	Destructor.
virtual void	draw (const Display::RefreshReason &reason, WorldCanvas *worldcanvas)
	Draw this 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 &ev)
	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
	DDDEllipse ()

	DDDEllipse (const DDDEllipse &other)
	(Required) copy constructor.
void	operator= (const DDDEllipse &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
Matrix< Int >	toIntPixel (const Matrix< Double > &points)
void	listWorld ()
	Debugging routines.
void	listPixel ()
Private Attributes
Bool	itsOutline
	Fill style.
Vector< Quantum< Double > >	itsWorldParameters
	Define center x, center y, major, minor, pa in world.
Vector< Double >	itsPixelCenter
	Define center x, center y, major, minor, pa (radians) in screen pixel.
Vector< Double >	itsPixelShape
Matrix< Double >	itsCorners
	Rotated Rectangle Corners to draw in screen pixel.
Matrix< Double >	itsPixelOffsets
Block< DDDHandle >	itsHandles
	List of handles.
DDDObject::Mode	itsMode
	Mode.
Double	itsBaseMoveX
	Store for movement bases.
Double	itsBaseMoveY
LogIO	itsLogger
	Logger.
CoordinateSystem	itsCoordinateSystem
	CoordinateSystem in screen pixel coordinates.
WorldCanvas *	itsWorldCanvasPtr
	pointer to world canvas (shallow copy)
Bool	itsRectangle
	are we drawing a rectangle or an ellipse ?
Bool	itsFracX
	Fractional indicators.
Bool	itsFracY
Bool	itsDoRef
	Do world/pixel conversions at reference location ?

Detailed Description

Implementation of an ellipse/rectangle object for DrawingDisplayData class.

Synopsis

This class implements the interface defined by DDDObject, to provide an ellipse or rectangle object for registration with DrawingDisplayData objects. The widths are all full widths.

Definition at line 65 of file DDDEllipse.h.

Constructor & Destructor Documentation

casa::DDDEllipse::DDDEllipse	(	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 : center (vector of quanta length 2), major, minor, positionangle (all quanta).

Units 'frac' ([0->1]) are available for the center only. Units 'pix' (absolute 0-rel image pixels) are available for the major and minor only.

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. If the field rectangle=True a rectangle is drawn. If it does not exist or is False, an ellipse is drawn.

Finally, field doreference which defaults to False is used to control the location at which conversions to and from pixel coordinates are done. If True then all conversions are done at the reference value. Otherwise, the conversions are done at the actual location of the shape. For example, with a DirectionCoordinate plane, setting doreference=True will cause the shape to rotate as you move it about the display as the position angle tracks the local North.

virtual casa::DDDEllipse::~DDDEllipse ( ) [virtual]

Destructor.

casa::DDDEllipse::DDDEllipse ( ) [protected]

(Required) default constructor.

casa::DDDEllipse::DDDEllipse ( const DDDEllipse & other ) [protected]

(Required) copy constructor.