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mozilla / pdf.js

PDF Reader in JavaScript
https://mozilla.github.io/pdf.js/
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Polygonfilling of does not work correct #7384

Open lalue opened 8 years ago

lalue commented 8 years ago

Configuration:

Steps to reproduce the problem: Load file in pdf.js viewer (http://www.lalue.de/pdfjs/web/viewer.html)

What is the expected behavior?

Dark area (sea) filled without white lines visible Light Area (land) not crossed by dark lines.

Screenshot rendered by Acrobat Reader. rendered_by_adobe

What went wrong? (add screenshot)

rendered_by_pdfjs_firefox_2

Link to viewer.html with sample:

Snuffleupagus commented 8 years ago

Please note the lines are actually faintly visible in Adobe Reader as well, it's just that they are more easily spotted in PDF.js. (Interestingly, it seems that the PDF viewer in Google Chrome renders it the same way as PDF.js.)

To ensure future availability, I'm directly attaching the referenced PDF file here: render_problem.pdf.

lalue commented 8 years ago

Hi Jonas,

Thanks for your fast reply.

Yes, you are right – this is unfortunately true.

The intention of the pdf creation software is to fill the dark area (water). The filling algorithm generates a rather strange set of polygons (working like a plotter). I would expect the have the border of the polygons to have the same colour as the background and I’m not sure if it’s the creator of the renderer which uses the wrong colour or of we can see the background through.

Unfortunately I have to live with those documents and therefore it would be great to minimize the display ‘error’.

Thanks for your work

Klaus Langelüddeke

Von: Jonas Jenwald [mailto:notifications@github.com] Gesendet: Donnerstag, 2. Juni 2016 12:21 An: mozilla/pdf.js Cc: lalue; Author Betreff: Re: [mozilla/pdf.js] Polygonfilling of does not work correct (#7384)

Please note the lines are actually faintly visible in Adobe Reader as well, it's just that they are much more easily spotted in PDF.js. (Interestingly, it seems that the PDF viewer in Google Chrome renders the same way as PDF.js.)

To ensure future availability, I'm directly attaching the referenced PDF file here: render_problem.pdf https://github.com/mozilla/pdf.js/files/295331/render_problem.pdf .

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