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https://issues.apache.org/jira/browse/PDFBOX-2294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14115782#comment-14115782
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John Hewson commented on PDFBOX-2294:
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I've implemented vertical text in my _no-awt_ branch which will be merged into
the trunk soon. I didn't use the method from this patch (which was to apply the
x displacement to the y axis) instead I used the vertical displacements and
position vectors embedded in the PDF, as described in the PDF spec.
> Improve vertical text drawing as an experiment
> ----------------------------------------------
>
> Key: PDFBOX-2294
> URL: https://issues.apache.org/jira/browse/PDFBOX-2294
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 2.0.0
> Environment: Windows7, JDK 1.7
> Reporter: tani
> Assignee: John Hewson
> Priority: Minor
> Attachments: vertical_writing_mode.patch
>
>
> When I converted some PDF into image using PDFToImage, I got unexpected image
> which has horizontally located text even its encoding was Identity-V.
> After trying attached patch file as workaround, I could see improvement.
> (Even though it remains deviations of text location partially..)
> (Related article)
> http://mail-archives.apache.org/mod_mbox/pdfbox-users/201408.mbox/%3C53FC4BC8.8070003%40marino.co.jp%3E
> PDF file which I dealt is as follows.
> http://blogs.adobe.com/CCJKType/files/2012/07/TaroUTR50SortedList112.pdf
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