Yes!
I've had this problem when building apps, and I've also noted missing alpha
control in a couple of popular QC based apps designed for editing still
image, which has led me to think this is ubiquitous. I've been able to
access alpha by using an RGB patch (as you say), but I no longer get the
color chooser panel if I have to set something up in that way.

Having the opacity appear in the color chooser panel is totally necessary,
as it gives users that don't know anything about what "alpha" is, quick
gratification. For a user to have to see individual color channels to get
that control option is way too obscure.

My need for Opacity(alpha) is pegged at 100%. Will file duplicate bug.

-George Toledo

On Mon, Oct 19, 2009 at 3:53 PM, Christopher Wright <[email protected]>wrote:

> When using a QCCompositionParametersView view, published color ports can't
> have their alpha values modified from the QCCPV's color well's color chooser
> panel -- there's simply no alpha slider at all to adjust it.  There's a
> workaround where the alpha component can be manually published separately,
> but that's kinda lame ;)
>
> Anyway, curious to know if anyone else had come across this earlier (to
> point to a duplicate in the bug report), or if it's causing any
> problems/frustrations?  We have a few kludges/difficulties in a few apps due
> to this limitation.
>
> Bug filed as rdar://7313540 / http://openradar.appspot.com/7313540
>
> --
> [ christopher wright ]
> [email protected]
> http://kineme.net/
>
>
>  _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Quartzcomposer-dev mailing list      ([email protected])
> Help/Unsubscribe/Update your Subscription:
>
> http://lists.apple.com/mailman/options/quartzcomposer-dev/gtoledo3%40gmail.com
>
> This email sent to [email protected]
>
 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Quartzcomposer-dev mailing list      ([email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com

This email sent to [email protected]

Reply via email to