[jira] [Updated] (PDFBOX-1960) Matrix is wrong

["John Hewson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-1960?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Hewson updated PDFBOX-1960:
--------------------------------

    Affects Version/s: 2.0.0
                       1.8.4

> Matrix is wrong
> ---------------
>
>                 Key: PDFBOX-1960
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-1960
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 1.8.4, 2.0.0
>            Reporter: John Hewson
>            Priority: Critical
>
> I've been driven insane recently by trying to get pattern fills to render correctly. Patterns have their own matrix which is concatenated to the CTM and no matter how I applied the transformation, the results were wrong.
> It turns out that {{org.apache.pdfbox.util.Matrix}} is not behaving as expected, here's an example from a pattern I'm working on. I performed the same concatenation (i.e. multiplication) using our Matrix and Java's AffineTransform, the results are as follows:
> Java: AffineTransform[[2.0, 0.0, 1.251E-12], [-0.0, 2.0, 1684.0]] *
> AffineTransform[[0.6, 0.0, 302.6], [0.0, 0.6, 1091.38]] =
> [[0.600014,0.0,0.0][0.0,0.6,0.0][605.21,2856.34,1.0]]
> PDFBox: [[2.0,-0.0,0.0][0.0,2.0,0.0][1.2505552E-12,1684.0,1.0]] * [[0.3,0.0,0.0][0.0,0.300007,0.0][302.60,586.17,1.0]] = [[0.6,0.0,0.0][0.0,0.6,0.0][302.608,1091.38,1.0]]
> I suggest that we remove Matrix and replace it with AffineTransform.



--
This message was sent by Atlassian JIRA
(v6.2#6252)