[gmpi] Re: 3.9 (draft) use cases and stuff
- From: Paul Davis <paul@xxxxxxxxxxxxxxxxxxxxx>
- To: gmpi@xxxxxxxxxxxxx
- Date: Wed, 25 Feb 2004 21:23:44 -0500
>I don't get what it means to locate on something that does not have a known
>endpoint.
this is easy, but ...
>Or more concisely how on earth do you draw a GUI widget for it?
this is an entirely separate problem and shouldn't be conflated with
the first sentence.
>When you play an MP3 in <your favorite mp3 player> you get a position
>indicator. If you want to jump to approximately halfway through the
>project, you can drag the location indicator to about halfway through the
>widget, right?
2nd, totally different problem. not the same as the first. read on.
>Now translate that to a GMPI host. In order to have anything that indicates
>"current position" relative to the project needs to know the total length.
absolutely not. when i jump to a position, i will *never* expect to
say "jump to 50% of the way through". i will *always* jump to an
absolute frame position, which may (or may not) correspond to some
relative fraction of a total length.
but whether it does or not is irrelevant to the receivers of the
locate command. they just go to where i told them to go.
>Assuming you haven't balked already: how does that locator GUI widget know
>where to draw the indicator? It needs to know the length of <something>
>which defines the end. If there are multiple sequencer modules, there needs
Why are you worrying about this? Everything that has a beginning has
an end. Even terrible movie trilogies :) Things that don't have their
own beginning don't care about what frame N means relative to an end
that they do not have - they just locate to frame N.
Things that *do* have a beginning and an end understand exactly how
frame N relates to both positions. Such things may or may not have
GUIs with start/end positional indicators.
--p
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