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Posted to batik-users@xmlgraphics.apache.org by Werner Guttmann <we...@indoqa.com> on 2012/10/30 13:23:48 UTC
Path transcoding problems with Batik
Hi,
we are trying to transcode an SVG into a PNG using Apache Batik, and we
are having problems with the quality of some SVG artefacts (mainly
pathes, using a pattern).
I have attached a small set of files that should be sufficient to assess
the problem, including ...
1) A very minimal SVG file (with one pattern definition and a path that
actually uses that pattern).
2) A screen shot of a PNG after transcoding, that shows (for the path
jags in the upper right area.
Our observations are:
a) When we view the SVG file in e.g. Inkscape, everything looks just
fine (i.e. the path is smooth and there are no jags).
b) Once we use Batik to transcode this image to a PNG, we are starting
to see those jags appear (as with this very path).
One more thing:
- We are not in control of e.g. the pattern definition, as that's
controlled externally. And the very same SVG is being used on a web site
where the rendering of SVG artefacts is done through flash and does not
cause this problem.
Any idea what could be causing this, and what we could do to improve the
situation for us ?
Kind regards
Werner Guttmann
Re: Path transcoding problems with Batik
Posted by Werner Guttmann <we...@indoqa.com>.
Hi Thomas,
adding share-rendering to the surrounding layers did the trick. Thanks
for your help.
Regards
Werner
On 01.11.2012 23:38, DeWeese Thomas wrote:
> Hi Werner,
> The result is much better if you add shape-rendering="geometricPrecision" either to the path or the containing group. It may be that by adjusting the miter limit you could also mitigate/eliminate the issue (the jags look to me like miters gone wild).
>
> Thomas
>
> On Oct 30, 2012, at 8:23 AM, Werner Guttmann <we...@indoqa.com> wrote:
>
>> Hi,
>>
>> we are trying to transcode an SVG into a PNG using Apache Batik, and we are having problems with the quality of some SVG artefacts (mainly pathes, using a pattern).
>>
>> I have attached a small set of files that should be sufficient to assess the problem, including ...
>>
>> 1) A very minimal SVG file (with one pattern definition and a path that actually uses that pattern).
>> 2) A screen shot of a PNG after transcoding, that shows (for the path jags in the upper right area.
>>
>> Our observations are:
>>
>> a) When we view the SVG file in e.g. Inkscape, everything looks just fine (i.e. the path is smooth and there are no jags).
>> b) Once we use Batik to transcode this image to a PNG, we are starting to see those jags appear (as with this very path).
>>
>> One more thing:
>>
>> - We are not in control of e.g. the pattern definition, as that's controlled externally. And the very same SVG is being used on a web site where the rendering of SVG artefacts is done through flash and does not cause this problem.
>>
>> Any idea what could be causing this, and what we could do to improve the situation for us ?
>>
>> Kind regards
>> Werner Guttmann
>> <Path 7.png><highlight-simple-a1.svg>
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>> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
>> For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
>
>
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Re: Path transcoding problems with Batik
Posted by DeWeese Thomas <th...@gmail.com>.
Hi Werner,
The result is much better if you add shape-rendering="geometricPrecision" either to the path or the containing group. It may be that by adjusting the miter limit you could also mitigate/eliminate the issue (the jags look to me like miters gone wild).
Thomas
On Oct 30, 2012, at 8:23 AM, Werner Guttmann <we...@indoqa.com> wrote:
> Hi,
>
> we are trying to transcode an SVG into a PNG using Apache Batik, and we are having problems with the quality of some SVG artefacts (mainly pathes, using a pattern).
>
> I have attached a small set of files that should be sufficient to assess the problem, including ...
>
> 1) A very minimal SVG file (with one pattern definition and a path that actually uses that pattern).
> 2) A screen shot of a PNG after transcoding, that shows (for the path jags in the upper right area.
>
> Our observations are:
>
> a) When we view the SVG file in e.g. Inkscape, everything looks just fine (i.e. the path is smooth and there are no jags).
> b) Once we use Batik to transcode this image to a PNG, we are starting to see those jags appear (as with this very path).
>
> One more thing:
>
> - We are not in control of e.g. the pattern definition, as that's controlled externally. And the very same SVG is being used on a web site where the rendering of SVG artefacts is done through flash and does not cause this problem.
>
> Any idea what could be causing this, and what we could do to improve the situation for us ?
>
> Kind regards
> Werner Guttmann
> <Path 7.png><highlight-simple-a1.svg>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
> For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
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