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Posted to batik-users@xmlgraphics.apache.org by ra...@audiofarm.de on 2003/08/21 15:53:06 UTC
ImageTranscoder & Clip-Paths
I do have multiple SVG menu buttons like:
<svg id="Button_1">
<path clip-path="url(#BackgroundClipPath)" d="..."/>
</svg>
<svg id="Button_2">
<path clip-path="url(#BackgroundClipPath)" d="..."/>
</svg>
etc.
where 'BackgroundClipPath' is quite a round-shaped menu background.
When viewing those buttons in Adobe's Viewer their edges appear smooth
as expected. However, when I start rendering those buttons as
BufferedImages (ARGB) using Batik's ImageTranscoder they come out with a
hard edge. It seems like they don't render to ARGB but to RGB images.
Other SVG graphics which don't employ a clip-path don't exhibit this
behaviour.
Anybody else had this problem?
ralf ...
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Re: ImageTranscoder & Clip-Paths
Posted by Ralf Siegel <ra...@audiofarm.de>.
>
> For performance reasons Batik uses hard-edged clip paths by default.
>You can fairly easily replace the clip-path references with mask refereces
>which Batik will render using anti-aliasing. Also I believe if you
>set shape-rendering="geometricPrecision" Batik will use soft edge clipping.
That's what I thought, but for some reason the shape-rendering-attribute
didn't have influence on the rendering result. However, masking works fine,
though I just stumbled across yet another problem (more SVG related, less
Batik)
Thanks again for your quick help Thomas!
ralf ...
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Recommended Site & Listening: http://forgetcassettes.com
contact_site: mailto:ralf@audiofarm.de
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Re: ImageTranscoder & Clip-Paths
Posted by Thomas DeWeese <Th...@Kodak.com>.
ralf@audiofarm.de wrote:
> I do have multiple SVG menu buttons like:
>
> <svg id="Button_1">
> <path clip-path="url(#BackgroundClipPath)" d="..."/>
> </svg>
>
> <svg id="Button_2">
> <path clip-path="url(#BackgroundClipPath)" d="..."/>
> </svg>
>
> etc.
>
> where 'BackgroundClipPath' is quite a round-shaped menu background.
>
> When viewing those buttons in Adobe's Viewer their edges appear smooth
> as expected. However, when I start rendering those buttons as
> BufferedImages (ARGB) using Batik's ImageTranscoder they come out with a
> hard edge. It seems like they don't render to ARGB but to RGB images.
> Other SVG graphics which don't employ a clip-path don't exhibit this
> behaviour.
>
> Anybody else had this problem?
For performance reasons Batik uses hard-edged clip paths by default.
You can fairly easily replace the clip-path references with mask refereces
which Batik will render using anti-aliasing. Also I believe if you
set shape-rendering="geometricPrecision" Batik will use soft edge clipping.
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