Container children must be UIComponents. You will need to add the sprites to a UIComponent first.
Tracy ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Guy Morton Sent: Wednesday, October 15, 2008 8:01 PM To: [email protected] Subject: Re: [flexcoders] Efficiency and objects in the display list Hi Doug Yes, I tried using Sprite but it seems I can't add a sprite-based component to my other containers...I guess because they are UIComponent based? Do Sprites in flex have to be added to the display list directly? I'm having a look at the docs but it's a little confusing as they generally discuss Sprite in terms of Flash rather than Flex. Guy On 16/10/2008, at 10:55 AM, Doug McCune wrote: Sprites can have mouse handling. If you don't base your class on UIComponent you lose all the automatic display list stuff (measuring, layout, etc). But if you manually control positioning and everything yourself, and don't have any need for stuff like CSS styles, then you should be OK using Sprite. Doug On Wed, Oct 15, 2008 at 4:49 PM, Guy Morton <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote: It seems odd that there is no really lightweight class for addressing this sort of need, which I would have expected was a common one (I note it's the subject of a second thread now too). On 16/10/2008, at 9:51 AM, Guy Morton wrote: Thanks for the reply, Josh. They do need to respond to mouseovers and mousedowns, so am I stuck with UIComponent? Guy On 15/10/2008, at 8:11 AM, Josh McDonald wrote: If they don't need mouse events, base them on Shape instead. On Wed, Oct 15, 2008 at 7:09 AM, Guy Morton <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote: Anyone? On 14/10/2008, at 11:34 AM, Guy Morton wrote: We have an app which adds 50 or 60 dynamically created and animated canvas-based objects to the display list as it runs. I've noticed when running this under the profiler that even though these canvas-based components are really simple (they have a draw function and a rotate function in them and don't import any other classes) they each add about 1 Mb to the overall memory consumed by the app. I've also tried making the components UIComponent based instead of using Canvas (as I believe it's a little more lightweight) but it doesn't seem to make a huge difference. Is there a better/more efficient way to dynamically create, draw, rotate and animate a bunch of small objects in a flex app? TIA Guy -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." Like the cut of my jib? Check out my Flex blog! :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> :: http://flex.joshmcdonald.info/ <http://flex.joshmcdonald.info/>
