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Subject: [OASIS Issue Tracker] Commented: (OFFICE-3849) "Concave" in 9.2.5 of ISO/IEC 26300

    [ http://tools.oasis-open.org/issues/browse/OFFICE-3849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35475#action_35475 ] 

Regina Henschel commented on OFFICE-3849:

I do not think, that it can by solved by simple replacing "ellipse" by "circle". The size of the regular polygon is determined by the attributes svg:height and svg:width, and there is no constrain, that width and height have to be equal.

I think, that "radius" in the context of the description of the attributes "concav" and "sharpness", are not meant as measurement for the size, but "radius" hear means the line segment drawn from the center through the corner of the regular polygon to the outer of the two ellipses.

LibreOffice and Apache OpenOffice have not implemented the shape kind "regular-polygon". It would be interesting, whether applications, which have implement it, allow that svg:width and svg:height have different values. If you look at common definitions of "regular-polygon" you will find, that the corners lay on a circle. But to achieve that, there need to be a constraint on svg:height and svg:width, same as it is done for the element draw:circle in ODF1.2, see section 19.539.8 in ODF1.2.

> "Concave" in 9.2.5 of ISO/IEC 26300
> -----------------------------------
>                 Key: OFFICE-3849
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-3849
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Bug
>          Components: Graphics
>    Affects Versions: ODF 1.0 (second edition)
>            Reporter: Patrick Durusau
>            Priority: Minor
> This clause mentions ellipses, but an ellipsis cannot be represented by a single radius and single center.
> Submitted as part of SC34N1979, a defect report from Japan.

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