Bill Hibbard wrote:
What exactly do you want it to do?
For my application, I want the user to be able to rotate a line. I have
long been using Curtis Rueden's "AnchoredPoint" method to do this,
however, if my user zooms in, or translates the display to where the
DataReferenceImpl/Cell is no longer visible, then they can no longer
rotate the line (unless they reset the display). So I am trying to make
it so the user can click anywhere on the line to rotate it.
I saw that you can directly manipulate a FlatField (Test40) and was
hoping to do that with the line. However, in Test 40, you really only
manipulate one of the RealTuples in the FlatField (if that's the right
way to thik about it) and the line is no longer straight.
In my example, ( FlatField: (radius)->(longitude) ) I was hoping to
obtain the longitude that was being selected and changed and set the
rest of the range values of my FlatField to that same longitude making
the line rotate. I first tried this with just the Dir.Manip.Rend. and
the DisplayRenderer.getDirectAxisValue(), but it seemed to throw the
CellImpl.doAction() method into an infinite loop.
I've considered two other ways to approach this:
1) Create an array of DataReferenceImpl's that do pretty much the same
thing (redraw the radial when moved - like the AnchoredPoint method) and
space them so that the user should (almost) always have one visible no
matter how they manipulate (pan/zoom) the display.
2) Somehow change the endpoint location of the DataReferenceImpl to
always be in the viewable area. The difficult part of this is to move
the DataReferenceImpl down the existing radial (along and toward the
origin).
I imagine that I can kludge something together to get the behavior I'm
looking for, but was hoping to find a more elegant way. ;-)
Thanks!
-kevin.
--
+------------------------------------------------------------+
Kevin L. Manross [KD5MYD] <>< (405)-366-0557
CIMMS Research Associate kevin.manross@xxxxxxxx
[NSSL-WRDD/SWATN] http://www.cimms.ou.edu/~kmanross
"My opinions are my own and not representative of CIMMS, NSSL,
NOAA or any affiliates"
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