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coordinates of text to coordinates of geometry

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spongebob View Drop Down
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    Posted: 18 Mar 2016 at 9:37am
uploads/1345/a_txtr2.pdfDear community!

In our application (c#) we read pdf-file, and use (draw etc.) extracted content (such as texts and geometrical figures). For our work we need to maintain the positions of all objects in one coordinate system. It is simply if page isn’t rotated. In this case coordinate system of geometrical figures has origin in the left bottom corner of the page and coordinate system of texts has origin in the left top corner of the page. In this case I calculate y-value of texts as height of page minus y-value in the coordinate system of text. But I don’t understand how to transform coordinates of text to coordinate system of geometry if page is rotated. Is attachment is file with rotated page

Thanks in advance

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