* Fix#12469 - crash caused by bridge expansion.
Handle a very rare case in which the algorithm picks a wrong
polygon for expansion seed.
(cherry picked from commit 5f843cc93470c96483abcbd47cf8ee5fe38dffe2)
* SPE-2698: Fix crash during regions expansion.
(cherry picked from commit a3f75133c8baead6f8d7bb01722a6bfcdc2e9038)
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Co-authored-by: Martin Šach <martin.sachin@gmail.com>
Co-authored-by: Lukáš Hejl <hejl.lukas@gmail.com>
* Initial port of the new ensure vertical thickness algorithm from PrusaSlicer.
Based on prusa3d/PrusaSlicer@1a0d8f5130
* Remove code related to "Detect narrow internal solid infill" as it's handled by the new ensuring code
* Support different internal solid infill pattern
* Ignore removed options
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Co-authored-by: Pavel Mikuš <pavel.mikus.mail@seznam.cz>
Co-authored-by: SoftFever <softfeverever@gmail.com>