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https://issues.apache.org/jira/browse/PDFBOX-6264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr resolved PDFBOX-6264.
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Resolution: Fixed
> Lab color space values incorrectly clamped in shadings
> ------------------------------------------------------
>
> Key: PDFBOX-6264
> URL: https://issues.apache.org/jira/browse/PDFBOX-6264
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.37, 3.0.8 PDFBox
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: LabColorspace
> Fix For: 2.0.38, 3.0.9 PDFBox, 4.0.0
>
> Attachments: octopdf-sample.pdf
>
>
> The attached file (from https://octopdf.com/octopdf-sample.pdf ) renders a
> black border which should be a cyan shading.
> The cause for this is that PDFBox limits the values to 0..1 instead of the
> ranges from the colorspace. The bug (introduced by me during PDFBOX-1915) is
> in PDShading below this comment
> {code:java}
> // "If the value returned by the function for a given colour component
> // is out of range, it shall be adjusted to the nearest valid value."
> {code}
> The Lab colorspace is 0..100 and the A B ranges from the colorspace object.
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