Cornelis Hoeflake created PDFBOX-3183:
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Summary: Thine strokes (hairline)
Key: PDFBOX-3183
URL: https://issues.apache.org/jira/browse/PDFBOX-3183
Project: PDFBox
Issue Type: Bug
Components: Rendering
Affects Versions: 2.0.0
Reporter: Cornelis Hoeflake
Fix For: 2.0.0
I have a PDF which has a very small line in it. When rendering with PDFBox, the
line is not shown. Only at very high resolution, starting with a scale factor
of 14. The line is shown (as black 1 pixel line) in other PDF readers like
Adobe, Chrome, PDFJS and Edge.
I think this issue is related to PDFBOX-2753 but is different.
The line is implemented by a stroke of 0.06pt high. That stroke is surrounded
by a rectangle of the same height. Now there are two problems.
First, the rectangle is used as the clipping area. That area is 0.06pt high
which is 0 pixels at lower resolution.
Secondly, the stroke itself has a height of 0.06pt which is 0 pixels at lower
resolution. Although the PageDrawer.getStroke rewrites this to 0.25.
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