[jira] [Resolved] (PDFBOX-2111) Cast error in Gouraud shadings

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-2111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr resolved PDFBOX-2111.
-------------------------------------

    Resolution: Fixed

Fixed in rev 1599647 for the trunk and rev 1599642 for the 1.8 branch.

> Cast error in Gouraud shadings
> ------------------------------
>
>                 Key: PDFBOX-2111
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2111
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering
>    Affects Versions: 1.8.5, 1.8.6, 2.0.0
>            Reporter: Tilman Hausherr
>            Assignee: Tilman Hausherr
>              Labels: shading, shadingpattern
>             Fix For: 1.8.6, 2.0.0
>
>
> There's a bug in Type4ShadingContext and Type5ShadingContext:
> {code}
>         long maxSrcCoord = (int) Math.pow(2, bitsPerCoordinate) - 1;
>         long maxSrcColor = (int) Math.pow(2, bitsPerColorComponent) - 1;
> {code}
> should be
> {code}
>         long maxSrcCoord = (long) (Math.pow(2, bitsPerCoordinate) - 1);
>         long maxSrcColor = (long) (Math.pow(2, bitsPerColorComponent) - 1);
> {code}
> The problem is that maxSrcCoord is 7FFFFFFF instead of FFFFFFFF when bitsPerCoordinate is 32.



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