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ENH: improve archor of internal bridge

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Add loop inside sparse infill of lower layer
to provide archor for internal bridge.

This option controls how many lower layers generate
loop path.

Signed-off-by: salt.wei <salt.wei@bambulab.com>
Change-Id: Ifdb6db9090115732aa2cacf5d155b587a10e18fc
(cherry picked from commit 4fdb87ecd5c2e680f6bad2d018ba39cd05f787ce)
This commit is contained in:
salt.wei 2022-11-15 20:20:48 +08:00 • committed by Lane.Wei
parent 08494b5f6f
commit 588f18ac58
18 changed files with 141 additions and 15 deletions
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58
src/libslic3r/Fill/FillBase.cpp
View file

@ -29,7 +29,7 @@
namespace Slic3r {
//BBS: 0% of sparse_infill_line_width, no anchor at the start of sparse infill
float Fill::infill_anchor = 0;
float Fill::infill_anchor = 400;
//BBS: 20mm
float Fill::infill_anchor_max = 20;
@ -122,13 +122,57 @@ void Fill::fill_surface_extrusion(const Surface* surface, const FillParams& para
{
Polylines polylines;
ThickPolylines thick_polylines;
try {
if (params.use_arachne)
thick_polylines = this->fill_surface_arachne(surface, params);
else
polylines = this->fill_surface(surface, params);
if (!params.with_loop) {
try {
if (params.use_arachne)
thick_polylines = this->fill_surface_arachne(surface, params);
else
polylines = this->fill_surface(surface, params);
}
catch (InfillFailedException&) {}
}
//BBS: add handling for infill pattern with loop
else {
Slic3r::ExPolygons expp = offset_ex(surface->expolygon, float(scale_(this->overlap - 0.5 * this->spacing)));
Polylines loop_polylines = to_polylines(expp);
{
//BBS: clip the loop
size_t j = 0;
for (size_t i = 0; i < loop_polylines.size(); ++i) {
loop_polylines[i].clip_end(this->loop_clipping);
if (loop_polylines[i].is_valid()) {
if (j < i)
loop_polylines[j] = std::move(loop_polylines[i]);
++j;
}
}
if (j < loop_polylines.size())
loop_polylines.erase(loop_polylines.begin() + int(j), loop_polylines.end());
}
if (!loop_polylines.empty()) {
if (params.use_arachne)
append(thick_polylines, to_thick_polylines(std::move(loop_polylines), scaled<coord_t>(this->spacing)));
else
append(polylines, std::move(loop_polylines));
expp = offset_ex(expp, float(scale_(0 - 0.5 * this->spacing)));
} else {
//BBS: the area is too narrow to place a loop, return to original expolygon
expp = { surface->expolygon };
}
Surface temp_surface = *surface;
for (ExPolygon& ex : expp) {
temp_surface.expolygon = ex;
try {
if (params.use_arachne)
append(thick_polylines, std::move(this->fill_surface_arachne(&temp_surface, params)));
else
append(polylines, std::move(this->fill_surface(&temp_surface, params)));
}
catch (InfillFailedException&) {}
}
}
catch (InfillFailedException&) {}
if (!polylines.empty() || !thick_polylines.empty()) {
// calculate actual flow from spacing (which might have been adjusted by the infill