You rock, that was it (plus needing to target the PARENT of the sprite instead of the sprite itself for converting localToGlobal coordinates)
So your suggestion was ½ of the issue! The other half was I had a sprite within the sprite I was doing hittesting on, and since both extended sprite, I thought it didn't matter which one I targeted - I targeted the exact reference to the sprite containing the actual graphics and it worked - should have thought of that earlier! Thanks! As much as an expert I think I am, I spent two days debugging this (it's a very complex UI in Flex drawn with Actionscript - partially the reason to be fair to myself). Jason Merrill Bank of America Enterprise Technology & Global Risk L&LD Instructional Technology & Media Join the Bank of America Flash Platform Developer Community Are you a Bank of America associate interested in innovative learning ideas and technologies? Check out our internal Innovative Learning Blog & subscribe. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of sebastian Sent: Wednesday, September 03, 2008 8:43 PM To: Flash Coders List Subject: Re: [Flashcoders] Complex Hittest hi Merrill, Doing hit tests of nested objects is simply a question of referencing the right child within the hierarchy instead of the parent MC, who's x and y are potentially different. You can prove this to yourself by doing hit tests on a test stage with MC's in different MC trees and tracing the resulting X, Y and hit test point result. So it should really be possible and not present an obstacle you can't overcome, just reference the right MC in the tree and voila, it should work. You may want to consider encapsulating the testing objects hit test to some external class file that would handle the boolean check/return, but that's an optional code-optimization-extra. Hope this is enough info to get you further. :) Seb. Merrill, Jason wrote: > I have two display object I want to check overlapping on - one of the > object will be very odd shaped, so I need to take advantage of the > ShapeFlag of the hitTestPoint method to be sure the object's shape is > taken into account. The problem is, each display object is nested > inside other many display objects - and each is nested in a different > display list hierarchy. So global coordinates and local coordinates > have to be accounted for otherwise, the hittesting is all messed up > -meaning, the wrong objects are detected to be overlapping. > > > > The hitTestObject () method won't work because even though it compares > the two objects, it doesn't have shapeFlag, which I need for at least > one of the objects, which is an odd-shaped user-drawn polygon. > HitTestPoint() works for the odd shape, but it only compares a point to > an object - which is normally OK, but if I convert one of the objects > down to global coordinates, the other is still using it's own local > coordinates, so the wrong objects are detected to be overlapping. > > > > Colin Holgate on Flash_Tiger, when I asked earlier about a similar > hittest problem, posted a link to this class: > http://www.adventuresinactionscript.com/blog/15-03-2008/actionscript-3-h > ittestobject-and-pixel-perfect-collision-detection but so far, it > doesn't seem to be working with detecting collision between these two > objects, I assume because of the same problem I am facing: they are in > different display hierarchies and thus their discrepancies in local > coordinates are messing up the detection. > > > > Any thoughts? > > Jason Merrill > Bank of America > Enterprise Technology & Global Risk L&LD > Instructional Technology & Media > > Join the Bank of America Flash Platform Developer Community > <blocked::http://sharepoint.bankofamerica.com/sites/tlc/flash/default.as > px> > > Are you a Bank of America associate interested in innovative learning > ideas and technologies? > Check out our internal Innovative Learning Blog > <blocked::http://sharepoint.bankofamerica.com/sites/ddc/rd/blog/default. > aspx> & subscribe > <blocked::http://sharepoint.bankofamerica.com/sites/ddc/rd/blog/_layouts > /SubNew.aspx?List=\%7b41BD3FC9-BB07-4763-B3AB-A6C7C99C5B8D\%7d&Source=ht > tp://sharepoint.bankofamerica.com/sites/ddc/rd/blog/Lists/Posts/Archive. > aspx> . > > _______________________________________________ > Flashcoders mailing list > [email protected] > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
