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[ford.304]

I'd like to show when someone selects an object in my 3d view by turning the model they have selected a different color, possibly including making it transparent. I already have a way to determine which model I have selected from which geometry was returned by the picking test.

As far as I can tell, the best way to do this is to create a class that implements TraversalCallback that will change all of the Appearance instances in the Shape3D nodes. I also need to keep track of what nodes I changed Appearance on and what their appearance was, so that I can change it back.

Is this the easiest way to do this, or is there some existing method for overriding color settings for an entire subtree temporarily?

Thanks.

[Marvin Fröhlich]

Most of the shapes will have the same Appearance. They possibly even use a single Appeance instance. You should determine the distinct set of Appearance from the Model and deal with them only.

Marvin

[hawkwind]

I set the emmissive color green when I mouse over an object of interest

[ford.304]

Is there a shortcut to determining the appearances used by a Model, or is the best way to go through all individual Shape3D nodes?

[Marvin Fröhlich]

Is there a shortcut to determining the appearances used by a Model, or is the best way to go through all individual Shape3D nodes?

No. There is no shortcut for the Appearances. But there is a shortcut for the Shape3Ds. You can do it the following way:

Code:

HashSet<Appearance> apps = new HashSet<Appearance>();
for ( Shape3D shp : model.getShapes() )
{
    apps.add( shp.getAppearance() );
}

Marvin