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hattonjohn
PostPosted: Fri Sep 30, 2011 8:03 pm 
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Joined: Thu Sep 29, 2011 1:39 pm
Posts: 5
My app uses PDFsharp to take pdfs and turn them into booklet pdfs. Now I need to optionally produce pdfs for printshops which require documents to be in mirror image, that is, flipped along the horizontal axis. Ideally I would do this as a process after the the booklet pages have been composed into a new pdf. Is there an elegant way to do this? Thanks.
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() => true
PostPosted: Sat Oct 01, 2011 2:55 pm 
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Joined: Wed Dec 09, 2009 8:59 am
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Should be a simple job with the correct transformation (not my area of expertise so I cannot tell you which transformation to use).

Sample using transformations:
http://www.pdfsharp.net/wiki/Graphics-s ... sformed_22

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hattonjohn
PostPosted: Mon Oct 24, 2011 4:07 pm 
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Joined: Thu Sep 29, 2011 1:39 pm
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Sorry, took me a while to get back to this project. Thanks for the pointers. I didn't find a way to do the flipping on the pages, but I can now flip while composing the pages in the first place:

Code:
Matrix mirrorMatrix = new Matrix(-1, 0, 0, 1, 0, 0);
gfx.MultiplyTransform(mirrorMatrix);
gfx.TranslateTransform(-width,1);
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