https://bugs.documentfoundation.org/show_bug.cgi?id=158482
Bug ID: 158482
Summary: Must not produce 3D surfaces which are opaque on one
side and transparent on other side
Product: LibreOffice
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Impress
Assignee: [email protected]
Reporter: [email protected]
Created attachment 191183
--> https://bugs.documentfoundation.org/attachment.cgi?id=191183&action=edit
Presentation with 3D-converted block arrow at different positions
If we convert a 2D shape with no fill and width-0 line to 3D, we (sometimes?)
get a 3D shape with surfaces which are transparent on one side, and opaque on
the other. If the width has a positive value, that doesn't happen.
To reproduce:
1. Create a new presentation
2. Delete the first slide's contents
3. On the drawing toolbar, choose Block Arrows > Circular Arrow
4. Indicate a rectangle for the "u-turn" arrow to appear
5. Right-click the arrow shape
6. Choose Convert > To 3D
7. Rotate the shape along different axes to examine its faces from multiple
directions
Expected result:
A shape with 0-width surfaces which are opaque on both sides; or alternatively
semi-transparent equally on both sides. Even fully-transparent (i.e. nothing
visible) is at least consistent, if not very convenient.
Actual result:
All surfaces in the shape are transparent on on side and fully opaque when
viewed from the other side (which you get to by rotation).
The attached document has copies of the arrow rotated to different positions.
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