revMobile: backbutton graphic geometry

[John Dixon]

Have a look at Bernd's offering

http://berndniggemann.on-rev.com/iphonebtnsrevlet/

> Date: Wed, 24 Nov 2010 20:55:31 +0000
> Subject: revMobile: backbutton graphic geometry
> From: david at vaudevillecourt.tv
> To: use-livecode at lists.runrev.com
> 
> So how to make a flexible backbutton - those rounded rectangles with a
> pointy end?
> 
>    1. Use several images like you would on the web - prob = hack + difficult
>    to scale vertically
>    2. Use several groups in some fiendishly clever way
>    3. Use a graphic and work out the points to create the desired shape
> 
> I'd like to be able to scale the button horizontally and tweek it
> vertically. What's the best technique and if the aim is to use points based
> geometry what would the function look like to create / transform it?
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