mouse within oval filled area

John Dixon dixonja at hotmail.co.uk
Sat Nov 12 15:09:29 EST 2011


OK then...

on mouseWithin
   put the backgroundcolor of me into colorCheck
   if the mouseColor = colorCheck then
      put  "I am inside the coloured bit of control ID no" && the short id of me
   end if
end mouseWithin



> From: admin at FlexibleLearning.com
> To: use-livecode at lists.runrev.com
> Subject: RE: mouse within oval filled area
> Date: Sat, 12 Nov 2011 19:25:16 +0000
> 
> Indeed, John, but not a unique object identifier if more than one grc uses
> the same color. I think I am back to polar coordinates (unfortunately).
> 
> The current engine behaviour is painfully inconsistent with other controls
> whose transparency is immune from mouse events.
> 
> Hugh Senior
> FLCo
> 
> 
> John Dixon wrote:
> 
> > Use the mouseColor ?
> 
> 
> Original message:
> 
> > Has anyone worked out how to test if the mouseLoc is within the filled
> area
> > of an oval graphic (defined by startAngle and arcAngle)? I was thinking
> > polar coordinates, but this assumes a circle and a fixed radius which is
> not
> > necessarily the case. A btter math brain than mine is needed!
> >
> > Hugh Senior
> > FLCo
> 
> 
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