Made sure the C++ fillers are instantiated at the worker threads,
where there are being released.
Extended the FillRectilinear2 to calculate the contour / line intersection
with exact arithmetics, improved robustness and added error handling
and error reporting, if the contours to be filled are not correct.
Added a safe variant of offset(const Slic3r::ExPolygon...), which offsets each loop separately.
New functions "remove_sticks" to remove zero area parts of polygons.
New functions "remove_small" and "remove_degenerate" for polygon clean up.
Extended the C++ supports, those are not finalized yet though.
Also a bug has been fixed for zero interface layers. Before
slic3r would put infinite number of interface layers over top surfaces,
if the number of interface layers was set to zero.
these regions are grown to anchor the bridge lines to the bottom surface.
The grown regions may overlap. In that case the regions are now merged
before the bridging direction is calculated for the merged region.
Updated xs/Build.PL to understand BOOST_LIBRARY_PATH and
BOOST_INCLUDE_PATH environment variables. This way one may easily
switch between various boost builds.
Some minor tweeks were done to make Slic3r compile with
Visual Studio 2013.
of virtual inheritance. Note that an invocation of ConfigBase::optptr()
is routed to FullPrintConfig::optptr() for all classes of the FullPrintConfig
hierarchy. FullPrintConfig::optptr() in turn invokes optptr()
of PrintObjectConfig, PrintRegionConfig, PrintConfig and HostConfig.
Due to the use of virtual inheritance, this all happens, when
PrintObjectConfig gets constructed as part of FullPrintConfig, but
at that time PrintRegionConfig, PrintConfig and HostConfig are not
constructed yet. Accessing them at that time leads to crashes,
when compiled with Visual Studio 2013 compiler. For some reason
the code generated by gcc does not crash, but I believe the behavior
is undefined and it is better to be fixed anyway.
The patch solves the problem by calling set_defaults() by the topmost
object, which not only fixes the crashes, but also avoids repeated
initialization.
