https://bugs.documentfoundation.org/show_bug.cgi?id=145700
Bug ID: 145700
Summary: FiLEOPEN DOC lighting direction has inverted
z-direction for extruded custom shapes
Product: LibreOffice
Version: 6.4 all versions
Hardware: x86-64 (AMD64)
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: LibreOffice
Assignee: [email protected]
Reporter: [email protected]
Created attachment 176263
--> https://bugs.documentfoundation.org/attachment.cgi?id=176263&action=edit
negative z-coordinate of light
Open the attached documents in Word and in LibreOffice. Notice, that the
maximum of the lighting is at different positions.
The problem is, that Word interprets a positive z-direction of the light as
being a light coming from the side of the observer. But LibreOffice interprets
a positive z-direction as coming form the opposite side.
Unfortunately neither [MS-ODRAW] nor ODF specify the orientation of the z-axis
in the coordinate system of an extruded custom shape. Therefore an immediate
fix is not possible. We might need to change the model for ODF or the
import/export filter.
I currently try to clarify it:
https://docs.microsoft.com/en-us/answers/questions/625631/3d-coordinate-system-orientation-in-office-drawing.html
https://lists.oasis-open.org/archives/office/202111/msg00016.html
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