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New FDM support sparse infill zig-zag algorithm.

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Fixed some old support and infill issues.

Fixes support problem #4295
Fixes Parts of interface layer extends beyond supports and cannot be printed
Fixes support missing under horizontal overhang #6058
Fixes Slicer double-traces small sections of Rectilinear Supports, causes
Fixes plastic buildup and nozzle crashes #4951
Fixes Add "Angle Interface layers" #2969
This commit is contained in:
Vojtech Bubnik 2021-04-08 15:29:40 +02:00
parent 0db55a0699
commit 8fd731f7a0
18 changed files with 1473 additions and 285 deletions
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19
src/libslic3r/Point.hpp
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@ -413,6 +413,25 @@ unscaled(const Eigen::Matrix<Tin, N, EigenArgs...> &v) noexcept
return v.template cast<Tout>() * SCALING_FACTOR;
}
// Align a coordinate to a grid. The coordinate may be negative,
// the aligned value will never be bigger than the original one.
inline coord_t align_to_grid(const coord_t coord, const coord_t spacing) {
// Current C++ standard defines the result of integer division to be rounded to zero,
// for both positive and negative numbers. Here we want to round down for negative
// numbers as well.
coord_t aligned = (coord < 0) ?
((coord - spacing + 1) / spacing) * spacing :
(coord / spacing) * spacing;
assert(aligned <= coord);
return aligned;
}
inline Point align_to_grid(Point coord, Point spacing)
{ return Point(align_to_grid(coord.x(), spacing.x()), align_to_grid(coord.y(), spacing.y())); }
inline coord_t align_to_grid(coord_t coord, coord_t spacing, coord_t base)
{ return base + align_to_grid(coord - base, spacing); }
inline Point align_to_grid(Point coord, Point spacing, Point base)
{ return Point(align_to_grid(coord.x(), spacing.x(), base.x()), align_to_grid(coord.y(), spacing.y(), base.y())); }
} // namespace Slic3r
// start Boost