> On 18 Sep 2018, at 13:44, Eric E. Dolecki <edole...@gmail.com> 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 _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
