[OASIS Issue Tracker] Commented: (OFFICE-3758) The addition for draw:circle in 19.571.10 not clear

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    [ http://tools.oasis-open.org/issues/browse/OFFICE-3758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32993#action_32993 ] 

Regina Henschel commented on OFFICE-3758:
-----------------------------------------

I think, connecting svg:width to "bounding box" is wrong:
- For a draw:caption element I expect, that svg:width and svg:height give the size of the text area, but a draw:caption element has a line to its caption-point in addition. What is the "bounding box" then?
- A draw:custom-shape can have points, which are outside the viewbox and parts of the Bezier-curve for example, can be outside the viewbox too.
- If I use a draw:ellipse element of kind "section" I expect, that the radii and the center of the ellipse do not change, when I vary start- or end-angle.

I suggest: "The attribute svg:width determines together with the attribute svg:height a rectangle, which is a reference for drawing the shape."

And then specify for the different kind of shapes, how this reference is used.

"For a draw:control, draw:frame, draw:rect or draw:page-thumbnail element this rectangle determines the size of the element directly.
A draw:circle element is scaled with keeping ratio, so that the full circle fits into this rectangle, independent of the attribute draw:kind of the circle.
A draw:ellipse element is scaled so that the full ellipse fits into this rectangle, independent of the attribute draw:kind of the ellipse.
For a draw:caption element this rectangle determines the area into which its text is written.
A draw:regular-polygon element is scaled so that the shape fits into this rectangle."

The elements draw:path, draw:polygon, and draw:polyline have a mandatory svg:viewBox attribute, for a draw:custom-shape it should be given (see issue OFFICE-3824). Therefore a connection to that attribute is possible.

"In case the shape has got a svg:viewBox attribute, the viewBox is mapped to this rectangle."

The suggestions above do not include a suitable description for a 3D-scene. I suggest to remove the reference to 19.571.10 in 19.571.5 <dr3d:scene> and describe it there directly. But I'm not yet familiar enough with 3D-scenes to make a suggestion. Especially the case of a scene as child element in another scene is not clear to me.
 
The only remaining case without description suggestion is a draw:custom-shape without viewbox, but that needs solving OFFICE-3824 first.

> The addition for draw:circle in 19.571.10 not clear
> ---------------------------------------------------
>
>                 Key: OFFICE-3758
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-3758
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Improvement
>          Components: Graphics
>    Affects Versions: ODF 1.2
>            Reporter: Thorsten Zachmann
>
> 19.571.10 states the following:
> 19.571.10 <draw:caption>, <draw:custom-shape>, <draw:circle>,
> <draw:control>, <draw:ellipse>, <draw:frame>, <draw:rect>,
> <draw:page-thumbnail>, <draw:path>, <draw:polygon>,
> <draw:polyline>, <draw:regular-polygon>
> See §5.1.2 of [SVG]. For drawing shapes that have a non rectangular shape, the length refers to
> the drawing shape's bounding box.
> If the svg:width and svg:height attributes specify different values for a <draw:circle>
> element, the radius of the circle is derived from the smaller of the two values, and the circle is
> centered within the bounding box.
> When working on a bug report in Calligra I found out that if there is a draw:circle with a type section LO/AOO uses svg:width, svg:height, svg:x and svg:y as there would be a full circle. This is done in LO/AOO also for a draw:ellipse. However in svg:x and svg:y there is no such notice. It even states "See §5.1.2 of [SVG]. For drawing shapes that have a non rectangular shape, the coordinate
> refers to the drawing shape's bounding box.". In my understanding the bounding box is the rect that encloses the visible part on the screen. So if only a quarter of a circle is shown only the rect around the quarter is the bounding box.
> I would like to clarify what is the intended meaning of the values so that the bug can be fixed correctly.

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