Re: NSView and array of moveable NSImages
Re: NSView and array of moveable NSImages
- Subject: Re: NSView and array of moveable NSImages
- From: Scott Anguish <email@hidden>
- Date: Thu, 5 Apr 2007 16:10:34 -0400
I sent that too soon.
Yes, this is how I did it when I was doing drawing applications for a
living.
Actually, I used a double linked list, since this made it easy to
traverse into groups, and move items around wholesale. But this was
a large, large scale package that often had 50,000 items to deal with.
But an array would work just as well on smaller systems.
On Apr 5, 2007, at 4:01 PM, I. Savant wrote:
On 4/5/07, Scott Anguish <email@hidden> wrote:
There isn't much extensive to it. You simply start at the closest
rectangle and test the bounds against the mouse location. First hit
is the one that you drag.
So you're saying the z-order should be managed by the image's
position in the array (index zero being the topmost image)? If so,
that's even better than maintaining a "z-order" property. :-) Just
move the images around in the array to change the z-order.
(sigh) No matter how efficient you think you've made something,
someone always comes along and points out a way you can make it even
more so. :-}
--
I.S.
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