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RUBBERBANDBOX__DEFINE

RUBBERBANDBOX__DEFINE

Name


      RUBBERBANDBOX__DEFINE

Purpose



      The purpose of this routine is to implement a rubberband-box ROI interaction.

Authors



        FANNING SOFTWARE CONSULTING BURRIDGE COMPUTING
        1645 Sheely Drive 18 The Green South
        Fort Collins Warborough, Oxon
        CO 80526 USA OX10 7DN, ENGLAND
        Phone: 970-221-0438 Phone: +44 (0)1865 858279
        E-mail: davidf@dfanning.com E-mail: davidb@burridgecomputing.co.uk

Category



      Objects.

Syntax



      theObject = Obj_New("RUBBERBANDBOX")

Superclasses



      INTERACTION
      CATATOM
      CATCONTAINER IDLITCOMPONENT
      IDL_CONTAINER

Class Structure



  class = { RUBBERBANDBOX, $
            box: FltArr(4), $ ; The corners of the box, once drawn.
            INHERITS INTERACTION $
          }

Messages



  None.

Event Structure



      event = { ID:theObject, TOP:topObject, HANDLER:Obj_New(), EVENT_NAME='RUBBERBANDBOX_EVENT', $
                  NAME: self._name, BOX:self.box, XPTS:FLTARR(5), YPTS:FLATARR(5), $
                  ACTION:"" }
      In which the XPTS and YPTS fields contain the X and Y locations of the box in a form
      suitable for drawing the ROI on the display with PLOTS. The BOX, XPTS, and YPTS are
      converted to the coordinate system of the draw widget associated with the interaction
      before being placed in the event structure. The ACTION field value will be "ACCEPT"
      by default, unless the ASK_ON_UP keyword is set and the user choses "CANCEL".

Modification History



      Written by: David W. Fanning, 25 October 2004.



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