Re: Alpha Blending?

• To: Kevin Manross <kevin.manross@xxxxxxxx>
• Subject: Re: Alpha Blending?
• From: Bill Hibbard <billh@xxxxxxxxxxxxx>
• Date: Wed, 7 Jan 2004 16:52:37 -0600 (CST)

Hi Kevin,

> Well, I have an array of Irregular2DSets.  I want to give each set a
> different color.  I then want to be able to toggle on and off the
> collection of Irregular2DSets at the same time.
>
> I'm sure that I can loop through the array of Iregular2DSets, and their
> associated DataReferences/DataRenderers and turn each one off
> individually, but I would like to do turn the array off and on in one
> step instead of a loop.  Is there a way to do this elegantly (i.e. w/o a
> loop)?  Is there and example?

Sure. Combine all your Sets in a FieldImpl with MathType
something like (index -> (r, g, b, Set(x, y))). Each Set
has a different color, and you can toggle the whole thing
on and off in one step.

Good luck,
Bill

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