Here is a quick 1 minute hack - please no chastizing me on the "repeat while the mouse is down" stuff. You can obviously turn this into a fancy self contained function with params stuff.. -- button script on mousedown put the loc of grc "Circle" into circleLoc put (the width of grc "Circle")/2 into tLength repeat while the mouse is down put the mouseloc into mLoc put findLength(circleLoc, mLoc) into tDistance if tDistance < tLength then set the loc of me to mLoc else set the loc of me to findSegmentPoint (mLoc, circleLoc, tLength) end if end repeat end mousedown
function findLength p1,p2 return round(sqrt((item 1 of p2 - item 1 of p1) ^ 2 + (item 2 of p2 - item 2 of p1) ^ 2)) end findLength function findSegmentPoint pointA, pointB, tLength put -tLength/findLength (pointA,pointB) into tRatio return round(item 1 of pointB - tRatio * (item 1 of pointA - item 1 of pointB)) & comma & round(item 2 of pointB - tRatio * (item 2 of pointA - item 2 of pointB)) end findSegmentPoint On 11/4/05, MisterX <[EMAIL PROTECTED]> wrote: > I haven't worked all the geometry functions available yet ;) > don't know the arcade engine > > but here's a good source: > > http://www.2dcurves.com/conicsection/conicsectionc.html > > that's the place for curves ;) > > other wise wolfram's reference is absolutely great. > > but coming to thing of it, my pie control must do something like > that... > > http://www.monsieurx.com/modules.php?name=News&file=article&sid=162 > > there's a setting button to offset the fields in and out of the > center of the pie chart. That's the one you are looking for... > > the pseudo script would say > > r = radius of circle > xy = center of circle or arc > xyR[1..4] are the polygon's rects, > > for each item I in xyR > if distance xy -> I > r > you're out of the circle... > > cheers > Xavier > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > Scott Rossi > > Sent: Saturday, November 05, 2005 7:13 AM > > To: How to use Revolution > > Subject: Constrain Within Circle? > > > > Anyone have a formula to constrain object dragging within a > > circular region? > > > > I'm guessing something like Arcade Engine has this in it, but > > I really only need this one function. > > > > Thanks & Regards, > > > > Scott Rossi > > Creative Director > > Tactile Media, Multimedia & Design > > ----- > > E: [EMAIL PROTECTED] > > W: http://www.tactilemedia.com > > > > _______________________________________________ > > use-revolution mailing list > > [email protected] > > Please visit this url to subscribe, unsubscribe and manage > > your subscription preferences: > > http://lists.runrev.com/mailman/listinfo/use-revolution > > _______________________________________________ > use-revolution mailing list > [email protected] > Please visit this url to subscribe, unsubscribe and manage your subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-revolution > _______________________________________________ use-revolution mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
