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Subject: [OASIS Issue Tracker] Updated: (OFFICE-3710) 19.145draw:enhanced-path current point definition unclear.
[ http://tools.oasis-open.org/issues/browse/OFFICE-3710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Robert Weir updated OFFICE-3710: --------------------------------- Component/s: Graphics Affects Version/s: ODF 1.2 COS 1 (was: ODF 1.2) Description: In the definition for draw:enhanced-path the current point definition seemsto be unclear. What is the current Point for first subpath in an enhanced path shape? It is important to know for commands like A or W. When looking at the definition of svg on which draw:enhanced-path is based on one can see that at the beginning of a path always a MoveTo command is needed. However when looking at what implementations are doing we see a different behaviour. When working on the implementation one of the Calligra developers noted differences in what OOo/MSO are doing to what Calligra is doing. OOo and MSO set the current point to the first point in the arc in case of A and W. Calligra uses 0 0. Using B and V would make the situation more clear. If one of the behaviours is correct it might be a good idea to improve the wording of the spec to make more clear what the correct behaviour is. was: In the definition for draw:enhanced-path the current point definition seames to be unclear. What is the current Point for first subpath in an enhanced path shape? It is important to know for commands like A or W. When looking at the definition of svg on which draw:enhanced-path is based on one can see that at the beginning of a path always a MoveTo command is needed. However when looking at what implementations are doing we see a different behaviour. When working on the implementation one of the Calligra developers noted differences in what OOo/MSO are doing to what Calligra is doing. OOo and MSO set the current point to the first point in the arc in case of A and W. Calligra uses 0 0. Using B and V would make the situation more clear. If one of the behaviours is correct it might be a good idea to improve the wording of the spec to make more clear what the correct behaviour is. There are two issues that we need to consider: 1) What is the initial "current point"? 2) What is the new "current point" after each operation? The SVG spec says explicitly that a path must begin with a Moveto operation: http://www.w3.org/TR/SVG/paths.html#PathDataMovetoCommands This ambiguity will go away if we converge on SVG. > 19.145 draw:enhanced-path current point definition unclear. > ----------------------------------------------------------- > > Key: OFFICE-3710 > URL: http://tools.oasis-open.org/issues/browse/OFFICE-3710 > Project: OASIS Open Document Format for Office Applications (OpenDocument) TC > Issue Type: Bug > Components: Graphics > Affects Versions: ODF 1.2 COS 1 > Reporter: Thorsten Zachmann > > In the definition for draw:enhanced-path the current point definition seemsto be > unclear. What is the current Point for first subpath in an enhanced path shape? > It is important to know for commands like A or W. > When looking at the definition of svg on which draw:enhanced-path is based on one > can see that at the beginning of a path always a MoveTo command is needed. > > However when looking at what implementations are doing we see a different behaviour. > When working on the implementation one of the Calligra developers noted differences > in what OOo/MSO are doing to what Calligra is doing. OOo and MSO set the current > point to the first point in the arc in case of A and W. Calligra uses 0 0. Using B > and V would make the situation more clear. > > If one of the behaviours is correct it might be a good idea to improve the wording of > the spec to make more clear what the correct behaviour is. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://tools.oasis-open.org/issues/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
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