Re: Math question
Re: Math question
- Subject: Re: Math question
- From: "Eric E. Dolecki" <email@hidden>
- Date: Tue, 24 Jan 2017 18:57:24 +0000
Thanks so much, that works perfectly!
Another quick question.
distance of 100 = minimum value (say 0)
distance of 200 = maximum value (say 100)
How can I apply that? I plan on Int for this value.
On Tue, Jan 24, 2017 at 1:52 PM Saagar Jha <email@hidden> wrote:
> Not completely sure if this is what you want, but I think your “scale”
> would be:
>
> scale = (distance - minDistance) / (maxDistance - minDistance) * (maxScale
> - minScale) + minScale
>
> In this case,
>
> scale = (distance - 100) / 100 * 2 + 1
>
> Saagar Jha
>
> On Jan 24, 2017, at 10:45 AM, Eric E. Dolecki <email@hidden> wrote:
>
> I have a situation where the distance of an onTouchesBegan in iOS produces
> a scale for an object.
>
> min distance of 100 = scale of 1.0
> max distance of 200 = scale of 3.0
>
> So I am looking for a number between 100 and 200 which ends up being
> between 1.0 and 3.0. I can get the distance easily enough, but the scale
> factor eludes me at the moment. Coffee? Lack of this kind of math for over
> 20 years? Heh.
>
> self.scaleCircle.transform = CGAffineTransform(scaleX: percentage, y:
> percentage)
>
> What math would I apply to get that range?
>
> Eric
>
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