Re: 2 displays for one cross section (different GriddedSets)

• To: Stu Wier <wier@xxxxxxxxxxxxxxxx>
• Subject: Re: 2 displays for one cross section (different GriddedSets)
• From: "From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>" <billh@xxxxxxxxxxxxx>
• Date: Fri, 17 Aug 2001 19:54:59 -0500 (CDT)

Hi Stu,

> Say I've got a 3D display and in it show a slice or cross-section
> (by making a new FlatField from 3D data by making a Gridded3Dset
> describing the plane of the slice in 3D space and resampling the full 
> FlatField
> of 3D data to a new FlatField "sliceFF" using the Gridded3DSet).
> 
> Now further the cross section data in "sliceFF" is also shown in a separate
> 2D display, a DisplayImplJ2D. This involves making a new FlatField
> say "slice2D" with a new Gridded2DSet, and some RealTypes
> and ScalarMaps based on that, and a new FunctionType, DataReference etc.
> 
> Now by some user interface method the original slice in 3D is
> repositioned.  sliceFF is recomputed
> 
> How do I send word to the 2D display to go get the
> modified "sliceFF" when it is changed, make its display again?  Or is there 
> some
> even more subtle way to move the new data into the second display,
> such as sharing a data reference in either the Java or VisAD sense?

You should have a DataReference to sliceFF that's been
linked via an addReference() call to your DisplayImplJ2D.
When you update the FlatField in sliceFF via a setData()
call on the DataReference, that will trigger the
DisplayImplJ2D to re-display.

Cheers,
Bill

• Follow-Ups:
  • p.s., Re: 2 displays for one cross section (different GriddedSets)
    • From: From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>

• References:
  • 2 displays for one cross section (different GriddedSets)
    • From: Stu Wier