[vtkusers] Any ideas for showing selected items?

[Alex Malyushytskyy]

There are not that many choices. You either outline or change color.

Outlining works the best for 2D. With all the 3D geometry I worked it is
very time consuming or not informative.

Color is used in any CAD system I ever worked with. Especially if you need
to select not whole actor but some polygons, edges or nodes,

Alex



On Wed, Sep 4, 2013 at 5:24 AM, Doug Hoppes <dhoppes at mbfbioscience.com>wrote:

>  Hi all,****
>
> ** **
>
>                 Okay, I’m stuck.  I have around 20,000 items in my scene.
> I need some sort of indicator for the user to select 10,000 of them.  So, I
> have my list of 10,000 selected items.  Any ideas on a way to show that the
> objects are selected?  VTKActors are pretty heavy weight, so the idea was
> going with a glyph.  However, the objects are various meshes/surfaces.  So,
> if I create a glyph, it may be inside of the surface and the user won’t be
> able to know if the item is selected.****
>
> ** **
>
>                 My only thought is some sort of mesh outline that is a
> glyph, rather than an actor.  Note: I can’t just turn all of the selected
> items to wireframes because there is an option to show the surface as a
> wireframe.  I thought of making the surface semi-transparent, but the
> user’s also want to control the transparency of the item that is selected.
> ****
>
> ** **
>
> Doug****
>
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