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FIX: Top surface bridging fail on 3DHC & FL infill 

Add 45 degree angle offset when processing the bridge.
Need to raise infill_direction to invalidate posPrepareInfill

jira: 6774
Change-Id: I5e6bef3aa814b01c5f30398ac745937a67e3ef4c
(cherry picked from commit 7b12cab10b88f432a11414f8caa1c6427777a1ba)
This commit is contained in:
jianjia.ma 2024-04-10 15:14:01 +08:00 committed by Lane.Wei
parent c5d9b3a3a7
commit 427deda14e
3 changed files with 14 additions and 5 deletions
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2
src/libslic3r/Fill/Fill3DHoneycomb.cpp
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@ -196,7 +196,7 @@ void Fill3DHoneycomb::_fill_surface_single(
{
// no rotation is supported for this infill pattern
// BBL: add support for rotation
auto infill_angle = float(this->angle);
auto infill_angle = float(this->angle);
if (std::abs(infill_angle) >= EPSILON) expolygon.rotate(-infill_angle);
BoundingBox bb = expolygon.contour.bounding_box();

2
src/libslic3r/Fill/FillFlippingLine.cpp
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@ -196,7 +196,7 @@ void FillFlippingLine ::_fill_surface_single(
coord_t line_spacing = coord_t(scale_(this->spacing) / params.density);
// reduce density
if (params.density < 0.999) line_spacing *= 1.5;
if (params.density < 0.999) line_spacing *= 1.08;
bb.merge(align_to_grid(bb.min, Point(line_spacing * 4, line_spacing * 4)));

15
src/libslic3r/PrintObject.cpp
View File

@ -2211,9 +2211,17 @@ void PrintObject::bridge_over_infill()
};
// LAMBDA do determine optimal bridging angle
auto determine_bridging_angle = [](const Polygons &bridged_area, const Lines &anchors, InfillPattern dominant_pattern) {
auto determine_bridging_angle = [](const Polygons &bridged_area, const Lines &anchors, InfillPattern dominant_pattern, double infill_direction) {
AABBTreeLines::LinesDistancer<Line> lines_tree(anchors);
// Check it the infill that require a fixed infill angle.
switch (dominant_pattern) {
case ip3DHoneycomb:
case ipFlippingLine:
return (infill_direction + 45.0) * 2.0 * M_PI / 360.;
default: break;
}
std::map<double, int> counted_directions;
for (const Polygon &p : bridged_area) {
double acc_distance = 0;
@ -2587,11 +2595,12 @@ void PrintObject::bridge_over_infill()
double bridging_angle = 0;
if (!anchors.empty()) {
bridging_angle = determine_bridging_angle(area_to_be_bridge, to_lines(anchors),
candidate.region->region().config().sparse_infill_pattern.value);
candidate.region->region().config().sparse_infill_pattern.value,
candidate.region->region().config().infill_direction.value);
} else {
// use expansion boundaries as anchors.
// Also, use Infill pattern that is neutral for angle determination, since there are no infill lines.
bridging_angle = determine_bridging_angle(area_to_be_bridge, to_lines(boundary_plines), InfillPattern::ipLine);
bridging_angle = determine_bridging_angle(area_to_be_bridge, to_lines(boundary_plines), InfillPattern::ipLine, 0);
}
boundary_plines.insert(boundary_plines.end(), anchors.begin(), anchors.end());