Re: how to clip inside a path
Re: how to clip inside a path
- Subject: Re: how to clip inside a path
- From: Roland King <email@hidden>
- Date: Mon, 29 Oct 2012 23:27:53 +0800
On 29 Oct, 2012, at 10:38 PM, Vincent Habchi <email@hidden> wrote:
> Le 29 oct. 2012 à 15:26, Roland King <email@hidden> a écrit :
>
>> Doesn't help I'm afraid. If I only have that one, single, path, the even-odd rule returns odd inside the path/circle so it's inside and the non-zero returns either 1 or -1 depending on the order of the control points so either way so that's inside too and in either case they get clipped in, not clipped out. I think I need two paths, one at the boundary of the context and one inside it, but I haven't managed to quite get my head around it.
>
> If you’re drawing on a solid background, you can always – as a kludge – draw everything then fill the inside of your path with the background color, which will give you the same result. Of course, if you are dealing with a stack of CALayers, it might be more difficult to find a workaround like this.
>
> Vincent
>
unfortunately a stack of layers is exactly where I am .. worse .. I have a stack of layers where some of them need to clip outside the path of one of them and all the layers are naturally transparent so I can't fill the clip one with a background and stuff it on top hiding those below. Each layer has one close path on it at this point so using paths is ideal if I can figure it out.
Someone suggested a clip mask, that might work if I can't get the paths to go; I feel for some reason that a clip mask would be less efficient and this should be totally do-able with paths and paths are what I naturally have here.
Time to start TestClippy and work this out, thanks for the suggestions.
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