Re: Changing the visibility of DataReferences?

• To: visad@xxxxxxxxxxxxxxxx
• Subject: Re: Changing the visibility of DataReferences?
• From: Curtis Rueden <curtis@xxxxxxxxxxxxx>
• Date: Wed, 03 Mar 2004 16:48:24 -0600

Hi Harry,

The best way to toggle data depiction is with:
  DataRenderer.toggle(boolean)

As for bulk adding and removing of references, you can remove them all with:
  DisplayImpl.removeAllReferences()

Add multiple references at once with:
  DisplayImpl.addReferences(DataRenderer, DataReference[])
or:
  DisplayImpl.addReferences(DataRenderer, DataReference[], ConstantMap[][])

But hopefully you won't need to add or remove massive numbers of references
over and over, since DataRenderer.toggle() is much faster.

-Curtis

At 03:51 PM 3/3/2004, Harry Hochheiser wrote:

>I have a VisAD scene with a significant number (> 400) of DataReferenceImpl 
>objects. Based on user interactions, i'd like to selectively toggle the 
>visibility of  individual items in this set. Currently, I'm doing this by 
>calling display.removeReference() when I want to make  a reference invisible, 
>and addReference() when I want it to reappear.
>
>This works fine, but it is a bit slow, particularly when - as is often the 
>case - i want to adjust  the visibility of multiple DataReferenceImpls all at 
>once.
>
>So, two questions:
>
>1) is this the appropriate way to adjust the visibility of DataReferenceImpl 
>objects? if not, what is?
>
>2) is there any way to do a bulk adding/removing of references?
>
>thanks,
>
>harry
>

• References:
  • Changing the visibility of DataReferences?
    • From: Harry Hochheiser