forgot to mention, the same Op allows you to normalize the channel too.

On Sat, Oct 13, 2012 at 3:52 PM, Mike Wong | CityU <
[email protected]> wrote:

> Hope I am following the point correctly, just want to share that upcoming
> Escher has a depthOp which can go through the input frame by frame to
> obtain sequence-wide min/max values of a channel and the min/max values of
> each frame is also keyframed into a float-pair.  Is it useful for the issue
> raised ?
>
> mike
>
> On Sat, Oct 13, 2012 at 3:05 PM, Diogo Girondi <[email protected]>wrote:
>
>> For sure we would.
>>
>> I once discussed an idea with Foundry folks of making the IP button work
>> as a conector to a individual DAG for the Viewer where you could build up a
>> trees like any other. This would allow you to use a arbitrary number of
>> nodes without having to group them or having to cope with loose nodes on
>> your project DAG.
>>
>> Mainly because even though I love the concept of the IP I never been too
>> fond of loose nodes with no visible connection in a tree. Which is
>> something Fusion has and annoys quite a bit.
>>
>> So we would basically have a number of "viewer slots" where each slot is
>> a DAG. These slots could be set, accessed and maintained from the project
>> root, or some more convenient place. And the IP button on the viewer would
>> become a IP slot selector instead of just a on/off switch.
>>
>> This would allow us to have multiple IPs at our disposal at any time
>> without having to rename a viewer's input process or the IP nodes. And we
>> would still be able to share a IP (slot) across viewers and of course be
>> able to set these from a menu.py and whatnots. All this without crowing the
>> viewer's menu even more.
>>
>> Not to mention that this "slot selector" could be made in a way to allow
>> for multiple selections, thus allowing people to activate a guide IP, a
>> normalizer IP and a CC IP all at the same time without having to combine
>> multiple nodes under a single IP node that is lost in a tree.
>>
>> But then they did the custom viewer process and this became questionable.
>>
>>
>> -diogo
>>
>> On Sat, Oct 13, 2012 at 3:16 AM, Frank Rueter <[email protected]>wrote:
>>
>>>  you'd still have to use up the input process slot
>>>
>>>
>>> On 13/10/12 7:13 PM, Diogo Girondi wrote:
>>>
>>> I believe you could use something like this:
>>>
>>>  Group {
>>>  name dNormalizer
>>>  tile_color 0x7aa9ffff
>>>  selected true
>>>  addUserKnob {20 dnormalizer l dNormalizer}
>>>  addUserKnob {26 tx l "" +STARTLINE T "Nothing to see here"}
>>> }
>>>  Input {
>>>   inputs 0
>>>   name Input
>>>   xpos -450
>>>   ypos -312
>>>  }
>>>  Dot {
>>>   name Dot2
>>>   xpos -416
>>>   ypos -244
>>>  }
>>> set N23ae8440 [stack 0]
>>>  Dot {
>>>   name Dot1
>>>   xpos -292
>>>   ypos -244
>>>  }
>>> set N23aeb250 [stack 0]
>>>  Dilate {
>>>   size {{input.format.w i}}
>>>   name Dilate1
>>>   label Max
>>>   xpos -379
>>>   ypos -166
>>>  }
>>>  NoOp {
>>>   name Max
>>>   xpos -379
>>>   ypos -120
>>>   addUserKnob {20 User}
>>>   addUserKnob {18 max l Max:}
>>>   max {{"\[sample this.input r 0 0]" i} {"\[sample this.input g 0 0]" i}
>>> {"\[sample this.input b 0 0]" i}}
>>>  }
>>> push $N23aeb250
>>>  Dilate {
>>>   size {{input.format.w*-1 i}}
>>>   name Dilate2
>>>   label Min
>>>   xpos -262
>>>   ypos -165
>>>  }
>>>  NoOp {
>>>   name Min
>>>   xpos -262
>>>   ypos -119
>>>   addUserKnob {20 User}
>>>   addUserKnob {18 min l Min:}
>>>   min {{"\[sample this.input r 0 0]" i} {"\[sample this.input g 0 0]" i}
>>> {"\[sample this.input b 0 0]" i}}
>>>  }
>>> push $N23ae8440
>>>  Grade {
>>>   blackpoint {{Min.min i}}
>>>   whitepoint {{Max.max i}}
>>>   white_clamp true
>>>   name Grade1
>>>   xpos -450
>>>   ypos -13
>>>  }
>>>  Output {
>>>   name Output1
>>>   xpos -450
>>>   ypos 92
>>>  }
>>> end_group
>>>
>>>  Wouldn't it work?
>>>
>>>
>>>  cheers,
>>> diogo
>>>
>>> On Sat, Oct 13, 2012 at 2:47 AM, Frank Rueter <[email protected]>wrote:
>>>
>>>> Same. It would indeed be very helpful. Has somebody sent in a request
>>>> yet?
>>>>
>>>>
>>>>
>>>> On 13/10/12 6:54 AM, Holger Hummel|Celluloid VFX wrote:
>>>>
>>>>> yes, you can.
>>>>> BUT:
>>>>> - it needs manual work: you need to know/find the min/max values. they
>>>>> change from pass to pass, actually in most cases from frame to frame.
>>>>> - it's quicker when you can just click on button to toggle this. also
>>>>> because it does not conflict with some other VIWER_INPUT that might be
>>>>> active.
>>>>>
>>>>> so +1 from me making this a feature request
>>>>>
>>>>> - Holger
>>>>>
>>>>>
>>>>> jbidwell wrote:
>>>>>
>>>>>> You can make a grade and group it, then name it "VIEWER_INPUT". The
>>>>>> viewer will use that grade in the viewer whenever the IP button is 
>>>>>> active.
>>>>>>
>>>>>> - JB
>>>>>>
>>>>>> ------------------------------------------------------------------------
>>>>>>
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>>>>>
>>>>>
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