Fix compilation on Windows
Fix array subscript out of range error in MarchingSquares
Fix normals of mesh constructed from slices
Improve performance of mesh construction from slices
Refactored Arrange interface: remove the union based BedShapeHint, replace it with proper function overloads
WARN: this commit is only intermediate, it does not compile.
Compensated slices have negative orientation...
Move efc to common params
Fix elefant foot compensation reversed contours
Remove redundant assertions and don't apply absolute correction if zero
by the PlaceholderParser.
Namely, all the options with the "ratio_over" reference are now handled
correctly by the PlaceholderParser with the exception
of the "first_layer_extrusion_width", which overrides speed of extrusions
by their respective extrusion type.
Also the various extrusion widths (extrusion_width, first_layer_extrusion_width,
external_perimeter_extrusion_width etc.) produce the same numbers
as if ran through the back-end, with the assumption of not overriding
layer height by the variable layer height editing tool or layer height
modifiers.
SPE-1072
Working but flipped normals with the interior.
Testing on treefrog passed
Oversampling for hollowed mesh should not be less than 3x
Flip back normals after simplify and remove redundant test code.
Implementation of 2-opt pairwise exchange iterative improvement
algorithm with an extension to a chain of segments, where
the chain of segments may get flipped during the exchange operation.
The 2-opt exchange algorithm may be quite slow.
Using a positive curvature estimate to control the strength
of the Elephant foot compensation shall work similarly to
the previous implementation while avoiding pinching off
tiny pieces from the contour.
