That's a great idea. In the end, I need a way of using OpenGL to manipulate the ModelView Matrix of my MapView. For example, if the mapview is output to a 2D texture then I can rotate that plane in 3D space. I was thinking about taking that Bitmap and storing it as a texture every time the MapView invalidates, but now I think that might be too slow. Someone else recommended that I follow the PolytoPoly API demo and use a Matrix to manipulate the geometry of my Map. Perhaps I'll have to try both approaches to see which is more efficient.
Thanks for you advice. I didn't know I could just call view.draw(canvas) on my own Bitmap. On Oct 10, 5:02 pm, "Romain Guy" <[EMAIL PROTECTED]> wrote: > getDrawingCache() will work only if you either enable the drawing > cache on the View or call buildDrawingCache() first. If you do this > manually make sure to disable/destroy the drawing cache when you are > done. Otherwise, every time the view is invalidated, it will have to > update the drawing cache. This is bad for Views that invalidate often, > like MapView. > > Because the drawing cache API is a bit difficult to use properly, I > recommend you instead simply create your own Bitmap, create a Canvas > for that Bitmap and then call view.draw(canvas). > > > > On Fri, Oct 10, 2008 at 2:13 PM, sandroid <[EMAIL PROTECTED]> wrote: > > > Hello, > > I want to use getDrawingCache() to get a Bitmap from MapView, > > but I'm not sure where or when to call the routine. In my ViewGroup > > there is a dispatchDraw(Canvas) routine, but it seems to me like I > > want to call getDrawingCache() after or during the MapView draw() > > routine. > > > Does anybody know much about getDrawingCache()? I cannot find a good > > example online or in the ApiDemos. Ideally I would like to be able to > > do this for any View. > > > -Marc > > -- > Romain Guywww.curious-creature.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
