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https://issues.apache.org/jira/browse/PDFBOX-1094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13913837#comment-13913837
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John Hewson edited comment on PDFBOX-1094 at 2/27/14 1:03 AM:
--------------------------------------------------------------
{quote}
Page 13 of the tracemonkey file is now "blocky", this wasn't before.
{quote}
This seems like a regression but it isn't really, it's a manifestation of the
problem with AWT Paint. The previous code worked because of a fluke which is
not present in my implementation. The same applies to the tiling_pattern file.
I'm going to conduct some experiments with AWT Paint and report on the results
soon so that we can figure out how to solve the problem. Rendering the patterns
using the pattern coordinate system is *not* a good solution. The files we have
_just so happen_ to use a pattern matrix with a scaling > 1 and so the patterns
that now look pixelated appeared crisp previously, however there is no reason
why a pattern cannot use a scaling of < 1 which would give results even more
pixellated than the current solution!
was (Author: jahewson):
{quote}
Page 13 of the tracemonkey file is now "blocky", this wasn't before.
{quote}
This seems like a regression but it isn't really, it's a manifestation of the
problem with AWT Paint. The previous code worked because of a fluke which is
not present in my implementation. The same applies to the tiling_pattern file.
I'm going to conduct some experiments with AWT Paint and report on the results
soon so that we can figure out how to solve the problem. Rending the patterns
using the pattern coordinate system is *not* a good solution. The files we have
_just so happen_ to use a pattern matrix with a scaling > 1 and so the patterns
that now look pixelated appeared crisp previously, however there is no reason
why a pattern cannot use a scaling of < 1 which would give results even more
pixellated than the current solution!
> Pattern colorspace support
> --------------------------
>
> Key: PDFBOX-1094
> URL: https://issues.apache.org/jira/browse/PDFBOX-1094
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 1.6.0
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Priority: Minor
> Attachments: ColoredTilingPaint.patch, PDF32000_2008_pg737.pdf,
> PDFStreamEngine.patch, PageDrawer.patch,
> _pdfbox-1094-tiling_pattern.pdf-1-blurry.png, jagpdf_doc_patterns.pdf,
> jagpdf_doc_patterns.pdf-1.png, pdfbox-1094-pdf32000_2008_pg737.pdf-1.png,
> pdfbox-1094-pdf32000_2008_pg737.pdf-1.png,
> pdfbox-1094-tiling_pattern.pdf-1.png, pdfbox-1094-tiling_pattern.pdf-1.png,
> pdfbox-1094-tiling_pattern.pdf-1.png, pdfbox-1861-tracemonkey.pdf-13.png,
> pdfbox-1861-tracemonkey.pdf-13.png, tiling_pattern.pdf
>
>
> PDFBox doesn't support PDPattern colorspaces
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