Re: "Path arithmetic" support in Quartz
Re: "Path arithmetic" support in Quartz
- Subject: Re: "Path arithmetic" support in Quartz
- From: Scott Thompson <email@hidden>
- Date: Wed, 15 Feb 2006 14:06:48 -0600
On Feb 15, 2006, at 1:48 PM, Timothy J. Wood wrote:
On Feb 15, 2006, at 11:23 AM, Scott Thompson wrote:
There is none of that in Quartz 2D. Quartz is a drawing system
and it's geometric capabilities are geared toward drawing.
It would seem to be there in some form since you can do:
- create arbitrary path
- set clip to path
- create another path
- fill; only the intersection of the paths is filled
There is no guarantee that this intersection actually generates a
geometric path. The same effect can be achieved on bitmap devices
with a region-like structure. Essentially you'd be intersecting
regions. To get antialiasing you could use a region with a higher
pixel density than the display.
My (admittedly pedantic) point being that Quartz 2D itself need not
be using geometric path intersections to achieve those clipping effects.
Scott
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