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Some lines rendered too light #624

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kuro68k opened this Issue Sep 27, 2016 · 5 comments

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kuro68k commented Sep 27, 2016

See the schematic on page 9 of this PDF: http://www.silabs.com/Support%20Documents/TechnicalDocs/AN383.pdf

Renders okay in Chrome and Adobe's software, but in Sumatra PDF the lines are very light and almost impossible to see when printed. I think it's due to them being very thin.

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kuro68k commented Sep 27, 2016

I checked Foxit too, it renders okay there. Well, it's not pretty but it's legible.

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kuro68k commented Feb 8, 2017

Is this the correct place to report this, or should I be looking somewhere else e.g. one of the libraries?

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kjk commented Feb 8, 2017

This code is from mupdf library but we have our own modifications.

Historically there have been several tweaks to rendering certain cases of thin lines, it's just hard to get all cases exactly right (not too thin and not too thick).

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kuro68k commented Feb 8, 2017

Thanks. If I find time I'll grab the source and experiment. Perhaps a parameter in the config file?

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kjk commented Feb 8, 2017

That would work. I believe Adobe Reader has a "Enhance thin lines" option (http://matslovesit.blogspot.com/2012/12/please-do-not-enhance-thin-lines-adobe.html)

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