Re: touchesMoved value setting
Re: touchesMoved value setting
- Subject: Re: touchesMoved value setting
- From: Alastair Houghton <email@hidden>
- Date: Tue, 18 Sep 2018 14:01:38 +0100
> On 18 Sep 2018, at 13:44, Eric E. Dolecki <email@hidden> wrote:
>
> I have a UI control that can be adjusted up and down using touch & drag.
> I've been asked to provide a control value based on how far the drag is via
> distance. So far so good.
>
> What my designer wants is a value change of every 20 pixels or so (control
> is 150px tall @ the moment) - so every 20 pixels = a change of 1. This will
> require multiple touch and drags but he's fine with it.
>
> The math is probably simple, but it's eluding me this morning. How can I
> easily convert my distance (I also have an increment Bool so I know whether
> it's addition or subtraction) to an appropriate value?
I’m not sure you’ve described the problem particularly clearly, because when I
read your e-mail I came the conclusion that you just need to divide your
distance by 20, but that can’t be right otherwise you’d have worked it out
yourself…
Kind regards,
Alastair.
--
http://alastairs-place.net
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