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http://www.openoffice.org/issues/show_bug.cgi?id=107521
                 Issue #|107521
                 Summary|edit points on curve: smooth points may change to corn
                        |er type
               Component|Drawing
                 Version|OOo 3.1.1 RC2
                Platform|PC
                     URL|
              OS/Version|Linux
                  Status|UNCONFIRMED
       Status whiteboard|
                Keywords|
              Resolution|
              Issue type|DEFECT
                Priority|P3
            Subcomponent|editing
             Assigned to|graphicsneedsconfirm
             Reported by|jes





------- Additional comments from j...@openoffice.org Tue Dec  8 05:30:11 +0000 
2009 -------
In OOo Draw, Bézier curves can have points of three different types: Corner,
Smooth and Symmetric. Using the "Edit Points" toolbar, it is possible to change
selected points to any of the three types.

A point's type should be stable: once set, the point's type should remain the
same until the user changes it to a different type.

This does not seem to be the case with recent versions of OOo. A point's type is
/usually/ stable, but after some editing operations, it often spontaneously
changes to a corner point. Sometimes several points on a curve will change to
corner points.

Unfortunately, I haven't found a recipe that will always show the problem, but
if I...
1) create a horizontal line,
2) Edit Points,
3) add a point near the center,
4) select the new point and click the "Smooth Transition" button,
5) fiddle with the curve for a while (move points, handles, move the shape,
select/de-select the shape), eventually, the center point will spontaneously
change from smooth to corner mode.

This can be a real problem for a curve with many points because switching from a
corner point back to a smooth point may change the position of the control
points, leading to a lot of repeated editing.

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