On Jul 8, 2008, at 10:53 PM, Rick Mann wrote:
I'm trying to use scaling of the superlayer to implement a zoom feature in my CAD app. The various elements in the canvas are drawn by a CALayer subclass I have, which overrides drawInContext:. After the zoom finishes animating, I want CA to call all the sublayer's drawInContext: methods as necessary to re-render the layer's contents. Is there any way to do this, short of keeping track of all the layers myself and calling setNeedsDisplay on them?
Your best solution for rendering multi-representational content in Core Animation is to use a CATiledLayer. It will automatically be called to update content as you zoom in and out (assuming you specify that the level of content exists). The drawing model is exactly the same as with a CALayer, although you can optimize the drawing a bit with a bit more knowledge.
-- David Duncan Apple DTS Animation and Printing [EMAIL PROTECTED] _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
