https://bugs.documentfoundation.org/show_bug.cgi?id=129530
Bug ID: 129530
Summary: vertical flip, which is contained in draw:transform,
does not flip a legacy arc
Product: LibreOffice
Version: Inherited From OOo
Hardware: x86 (IA32)
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: LibreOffice
Assignee: [email protected]
Reporter: [email protected]
Created attachment 156705
--> https://bugs.documentfoundation.org/attachment.cgi?id=156705&action=edit
legacy arc with vertical flip via draw:transform attribute
The attached file has two slides. Each slide has a legacy arc in blue without
transformation and the same arc in red with transformation.
Unpack the file to see the draw:transform attribute.
The transformations in attribute value translate(-5.75cm -5.25cm) scale(1 -1)
translate(5.75cm 5.25cm) are used from left to right.
The draw:transform attribute should result in a vertical flip in both cases.
Instead the shape gets a 180°-rotation.
If you vertically flip an arc with the tool from the UI, the transformation is
replaced by a horizontal flip and a 180°-rotation. That is mathematically
equivalent. The horizontal flip of a legacy arc is done by calculating new
start and end angles. That is missing here.
The problem is not only in Impress, but in other modules too.
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