1) Fixing yesterday's regression in deserialization of older painted 3MFs
(order of triangle children is now reversed, thus the serialization
/ deserialization has to take it into account).
2) WIP extraction into facets to triangulate T-joints.
This commit also fixed the following issues:
1) After loading a 3MF with painted triangles using the MMU painting gizmo, the painted triangles might not be displayed correctly in the MMU painting gizmo.
2) The MMU segmentation was unnecessarily executed for all layers and not just for the painted layers.
3) Object's base color wasn't changed when the assigned extruder for that object was changed while the MMU paint gizmo was opened.
4) Changing the base color of an object was only possible by removing all painted triangles.
1) When splitting a triangle, vertices are now properly shared with
the neighbor triangles, if these are already split.
Please note that the splitting may not be regular if the splitting
thershold is changed between splitting calls. Still the new code
shares the vertices accross shared edges properly.
2) Triangles resp. vertices are newly reused after deleted using
linked lists of released triangles resp. vertices.
This mechanism replaces the old mechanism of reusing already split
triangles.
Based on information in https://stackoverflow.com/a/46115028, structured bindings in C++17 don't name variables, and because of that, it is impossible to capture these variables in lambda functions.
TriangleSelector::valid refactored to m_valid and valid()
and bool members moved next to each other to shrink data structure
size due to memory alignment.
Changed the serialization structure
std::map<int, std::vector<bool>>
to a significantly more compact
std::pair<std::vector<std::pair<int, int>>, std::vector<bool>>
Such change shall significantly improve efficiency of Undo / Redo stack.
Serialization and deserialization in TriangleSelector were extended to support up to 16 materials (3 unused states left for possible later extension). These changes also affect the encoding of data from custom supports and seams, but it is backward compatible with the previous encoding. And for custom supports and seams, it is produced exactly the same data encoding as before.
- Extra dialog for autosetting by angle in FDM supports gizmo was removed
- Highlighting facets by angle is now controlled by a slider in the main gizmo dialog
- User is allowed to paint even when using the slope highlighter
- The button to turn highlighted facets to blockers was removed, it made no sense
- Highlighted facets are now rendered in light blue
