10000 fl.change~ object request · Issue #47 · AlexHarker/FrameLib · GitHub
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fl.change~ object request #47

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jamesb93 opened this issue Nov 26, 2019 · 6 comments
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fl.change~ object request #47

jamesb93 opened this issue Nov 26, 2019 · 6 comments
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@jamesb93
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It would be handy to be able to filter out repeated frames. Is there a way to do this currently? If not, can I suggest an fl.change~ object that only outputs a frame if it is different from the previous?
@AlexHarker
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AlexHarker commented Nov 29, 2019 •
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You could test that the lists match using an fl.==~ operation on two frames summed to the length of the frame on one side. This could give you a 1 / 0 for whether the frame was the same from which you could drive an fl.route~ or similar to let the frame through or not.

@AlexHarker
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For @fearn-e:

  • this object would need to have an output that sometimes (but not always) triggers. That can be seen in FrameLib_Route::Valve (setInput mode and also the update method).
  • then it would need an update Method that figures out if the frame has changed (vs. a stored version - see FrameLib_FrameDelta) and stores the new input at the end.
  • If it is the same the update method sets the output not to trigger, otherwise it sets it to trigger
  • process will now only run if the input has changed and just needs to copy input to output (there's a special methods for that - see FrameLib_Route::Valve)

@jamesb93
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👀

@fearn-e
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fearn-e commented Sep 6, 2023 •
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@AlexHarker Hold on, I just got round to starting this, ran the python script to make a new object, and it says fl.change~.cpp already exists. So I go and have a look, and what do you know.
https://github.com/AlexHarker/FrameLib/blob/new-objects/FrameLib_Objects/Routing/FrameLib_Change.cpp
(edit because i'm silly and linked to the wrong file initially)

I guess the only question is, is this object finished or do you want me to take a look at it anyway?

@AlexHarker
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Ah yes it would appear that I did do this and then promptly forgot all about it. It looks like I actually did the object in full, (including VS project etc.) although I suspect I did not write a helpfile.

Can you look to see if there is a proper helpfile and if not, can you make one and test that the object works...

@fearn-e fearn-e mentioned this issue Sep 8, 2023
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AlexHarker added a commit that referenced this issue Sep 12, 2023
@AlexHarker
Merge pull request #117 from fearn-e/fl.change
e52d495 
fl.change~ help patch #47
@AlexHarker
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Now included in develop at dad4dcb.

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