But by having a ModifyMetadata node inside, you're re-casting the
output of that group to be an Image-Op, and therefore you wouldn't be
able to connect its output to anything that requires a camera input?

Using metadata is a nice workaround, but you still need to know what
camera you're pulling from beforehand (or do a topnode or a recursive
loop on the inputs).

I wish there was a more straightforward way to do this for gizmos,
though. (like it is in plugin-land, where you can just test for a
certain input Class).


On Thu, Aug 11, 2011 at 6:50 PM, Erik Winquist <quis...@wetafx.co.nz> wrote:
>
> pretty slick workaround, michael.
>
> nice one.
>
> erik
>
>
> Michael Garrett wrote:
>
> I  got something working that seems to enable metadata in the camera pipe.
> So you could add this right after the camera, where you don't need a Dot to
> keep things clean, then access camera values via metadata.  Not ideal, but
> it could be helpful:
>
> set cut_paste_input [stack 0]
> version 6.2 v1
> push $cut_paste_input
> Group {
>  name AddCamMetaData
>  selected true
>  xpos -152
>  ypos -129
>  addUserKnob {20 User}
>  addUserKnob {41 shownmetadata l "" -STARTLINE T
> ViewMetaData2.shownmetadata}
> }
>  Input {
>   inputs 0
>   name Input1
>   xpos 61
>   ypos -238
>  }
>  ModifyMetaData {
>   metadata {
>    {set focal "\[value parent.input0.focal]"}
>   }
>   name ModifyMetaData1
>   selected true
>   xpos 61
>   ypos -176
>  }
>  ViewMetaData {
>   name ViewMetaData2
>   xpos 61
>   ypos -150
>  }
>  Output {
>   name Output1
>   xpos 61
>   ypos -40
>  }
> end_group
> Blur {
>  size {{"\[metadata focal]"}}
>  name Blur3
>  selected true
>  xpos -152
>  ypos -103
> }
>
>
>
>
> On 11 August 2011 14:59, Michael Garrett <michaeld...@gmail.com> wrote:
>>
>> Hi Ivan, great, thanks!  I was just trying Camera1.focal
>>
>>
>>
>> On 11 August 2011 14:47, Ivan Busquets <ivanbusqu...@gmail.com> wrote:
>>>
>>> Hi Michael,
>>>
>>> You can use tcl expressions in the "value" field of a ModifyMetadata
>>> node.
>>>
>>> ex:
>>> [value Camera1.focal]
>>>
>>> On Thu, Aug 11, 2011 at 2:40 PM, Michael Garrett <michaeld...@gmail.com>
>>> wrote:
>>> > Do you mean expression link to the modifymetadata "value" field?  How
>>> > exactly do you do this?
>>> >
>>> > On 11 August 2011 14:36, Frank Rueter <fr...@beingfrank.info> wrote:
>>> >>
>>> >> You can expression link a camera's parameter to generically create
>>> >> meta
>>> >> data. But of course this creates the same problem. It would be good to
>>> >> have
>>> >> multiple inputs for the ModifyMetadata node that allows any type of
>>> >> input
>>> >> type to do this sort of thing (I guess input 0 would be the type being
>>> >> passes through like a copy node)
>>> >>
>>> >>
>>> >> On Aug 11, 2011, at 1:20 PM, Paul Raeburn
>>> >> <praeburn.li...@googlemail.com>
>>> >> wrote:
>>> >>
>>> >> I wondered about that, but metadata node dont work in camera pipes, so
>>> >> I
>>> >> ran into a dead end.  Getting the name of the camera node node world
>>> >> be
>>> >> great (as per Ivans recommendation).  Ideally it would be great to et
>>> >> the
>>> >> data from the camera pipe directly, so it can be modified by
>>> >> downstream axis
>>> >> etc, but I assume that a foundry question.
>>> >> Any suggestions on how to access the metadata of the camera pipe?
>>> >>
>>> >> On 12 August 2011 05:51, Frank Rueter <fr...@beingfrank.info> wrote:
>>> >>>
>>> >>> Try "[topnode]" which will give you the top most node of a stream.
>>> >>> Obviously it won't work if the camera's parent pipe is connected. In
>>> >>> that
>>> >>> case you will need a script that walks upstream and returns the first
>>> >>> camera
>>> >>> node, then use that in your expression. Or use meta Data to make the
>>> >>> camera
>>> >>> info flow in the stream which is more elegant and probably faster.
>>> >>>
>>> >>>
>>> >>>
>>> >>> On Aug 10, 2011, at 8:24 PM, Paul Raeburn
>>> >>> <praeburn.li...@googlemail.com>
>>> >>> wrote:
>>> >>>
>>> >>> >
>>> >>> > We have been using references tot he input node and then values to
>>> >>> > get
>>> >>> > values from a camera node.  ie. NoOp1.input.focal
>>> >>> >
>>> >>> > This works fine but breaks if there is anything in between the NoOp
>>> >>> > and
>>> >>> > the camera, so you can tidy up the script with Dots or end up with
>>> >>> > multiple
>>> >>> > cameras just to be tidy.
>>> >>> >
>>> >>> > Is there a way to get camera stream directly, or even the name of
>>> >>> > the
>>> >>> > camera node from the stream?
>>> >>> >
>>> >>> > thanks
>>> >>> >
>>> >>> > Paul Raeburn
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>
> ________________________________
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> --
> erik winquist
> weta digital
>
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