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http://www.openoffice.org/issues/show_bug.cgi?id=98295





------- Additional comments from [email protected] Mon Feb  2 15:48:48 +0000 
2009 -------
AW: Problem found. Unfortunately, the definition of SdrObject E3dPolygonObj
which allows a free 3d geometry definition was defined wrong topologically in
relation to it's plane normal and 3D visibility when it was invented a long time
ago. Since the API allows reation of this SDrObject type, it is not possible to
simply change this definition. Only the chart should use it, and at least this
object type only exists at Runtime (is not saved and/or loaded in any
FileFormat). Still someone external may have used it in it's API. To not risk
wrong 3D lightings, i have to switch the orientation of the polygon when
creating the needed SdrPolyPolygonPrimitive3D in
ViewContactOfE3dPolygon::createViewIndependentPrimitive3DSequence(). Checking
further...

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