casa::RectRegionEvent Class Reference

Contains info on the WC rectanglar area selected by MWCRTRegion mouse tool. More...

#include <RectRegionEvent.h>

Inheritance diagram for casa::RectRegionEvent:

Public Member Functions
	RectRegionEvent (WorldCanvas *wc, const Int pixX1, const Int pixY1, const Int pixX2, const Int pixY2)
	Constructor taking a pointer to the WorldCanvas where the event occured, and the pixel coordinates of the rectangle.
virtual const Vector< Int >	pixBlc () const
	The corners of the selected rectangle, in screen pixel coordinates.
virtual const Vector< Int >	pixTrc () const
Private Attributes
Vector< Int >	itsPixBlc
	pixel position of the rectangle
Vector< Int >	itsPixTrc

Detailed Description

Contains info on the WC rectanglar area selected by MWCRTRegion mouse tool.

Intended use:

Public interface

Review Status

Date Reviewed:: yyyy/mm/dd

Etymology

"RectRegionEvent" holds information about a rectangular 'region' selected by the user with the MWCRTRegion mouse tool. NB: glish uses the term 'pseudoregion' instead to refer areas selected by MWCRTRegion et. al. In the context of Image Analysis, 'Region' refers to a more complex object, which may be assembled from multiple pseudoregions.

Synopsis

RectRegionEvent is created by the MWCRTRegion display library mouse tool, when a rectangular area is selected by it on a WorldCanvas where the tool is active. The event is passed (via WorldCanvas::sendEvent()) to the generic DisplayEH s registered with that WorldCanvas.

Motivation

A mechanism was needed to notify library objects associated with a WorldCanvas (in particular, DisplayData s) when a rectangular region was selected on the WC via MWCRTRegion. Formerly, this information was sent only to glish. This event is on a different level from the mouse/keyboard WorldCanvasEvents and serves a different purpose, so a new event type was created.