Re: Multiple linked cursors ?

Hi Andy,

> I wish to have the mouse button 2 crosshair cursor tracking
> linked with multiple displays, so that when the crosshair
> cursor is active in one display, cursors are also shown at
> the corresponding points in other displays.
> Any ideas about how best to do this ?

The easiest way to do this with a RealTuple object linked
to multiple displays via direct manipulation DataRenderers.

visad/examples/ provides an example. The RealTuple
objects is depicted as the small purple square in the lower
left corner of bothdisplays. You can drag it with a right
mouse button click in either display.

To depict a RealTuple as a cross hair, see the two yellow
direct manipulation cursors in visad/examples/

The alternative is to link a DisplayListener to your
Display that listens for center mouse button DisplayEvents
and uses them to generate depictions in other displays.
This would be more work.

Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738