[PD] How does vline~ work under the hood?

[Matt Barber]

It depends on what you mean by "trigger". Triggered by the mouse, I think
you're right. But see the attached patch. Since [del] (among other objects,
but I used [del] here for clarity) can schedule bangs between boundaries,
you can trigger [vline~] in the middle of blocks. Not so with [line~]: if a
bang is scheduled in that block, it starts the ramp at the beginning of
that block and ends it at the end of a future block such that the total ms
of the ramp does not exceed the requested ms.

On Sat, Sep 26, 2015 at 12:01 PM, Jonathan Wilkes <jancsika at yahoo.com>
wrote:

> What I mean is that both [line~] and [vline~] receive their messages on
> block boundaries.
> But unlike [line~], [vline~] can start/end ramps and jump to the values
> you give it without being
> limited by block boundaries.
>
> Another example with my day-long block sizes:
> At noon on Monday you send a bang to [metro 150]--[tgl]--[vline~].  You'll
> have
> to wait until noon Tuesday to hear the result, but you _will_ hear that
> same pattern of ones and
> zeros spaced 150ms apart that you were sending on Monday, even though the
> block size lasts a
> day.  That's the strength of [vline~].
>
> On the other hand, the [line~] object would just take the last [tgl] value
> it received on Monday
> (before it begins computing Tuesday's block), and it would just repeat
> that value the entire day of Tuesday.  If you had sent it a ramp time, you
> would get your ramp Tuesday, but it would necessarily
> stretch across the entire day of Tuesday because that is the block size.
>
> Essentially-- you can't send a message that would interrupt the [vline~]
> object's perform routine
> and feed it new values.  But because block sizes are usually small, I
> can't think of a
> situation where you'd need to do that.
>
> It occurs to me I could be wrong about any or all of this.  If so I'm
> certain Matt or Miller can set
> me straight.
>
> -Jonathan
>
>
> -Jonathan
>
>
>
> On Saturday, September 26, 2015 10:24 AM, i go bananas <hard.off at gmail.com>
> wrote:
>
>
> In that case, maybe an even simpler question:
>
> What is the difference between sending a [1, 0 50(  message to vline as
> opposed to line ?
>
> Why does line exhibit jitter, if both only trigger on block boundaries?
>
>
>
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