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Reworked connection of infill lines to perimeter lines.

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Added a new "infill_anchor" parameter.
This commit is contained in:
Vojtech Bubnik 2020-11-16 10:54:00 +01:00
parent 84693a5810
commit 4280fdb5f2
12 changed files with 383 additions and 470 deletions
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22
src/libslic3r/Fill/Fill.cpp
View file

@ -37,6 +37,8 @@ struct SurfaceFillParams
bool dont_connect = false;
// Don't adjust spacing to fill the space evenly.
bool dont_adjust = false;
// Length of the infill anchor along the perimeter line.
float anchor_length = std::numeric_limits<float>::max();
// width, height of extrusion, nozzle diameter, is bridge
// For the output, for fill generator.
@ -67,6 +69,7 @@ struct SurfaceFillParams
RETURN_COMPARE_NON_EQUAL(density);
RETURN_COMPARE_NON_EQUAL_TYPED(unsigned, dont_connect);
RETURN_COMPARE_NON_EQUAL_TYPED(unsigned, dont_adjust);
RETURN_COMPARE_NON_EQUAL(anchor_length);
RETURN_COMPARE_NON_EQUAL(flow.width);
RETURN_COMPARE_NON_EQUAL(flow.height);
RETURN_COMPARE_NON_EQUAL(flow.nozzle_diameter);
@ -85,6 +88,7 @@ struct SurfaceFillParams
this->density == rhs.density &&
this->dont_connect == rhs.dont_connect &&
this->dont_adjust == rhs.dont_adjust &&
this->anchor_length == rhs.anchor_length &&
this->flow == rhs.flow &&
this->extrusion_role == rhs.extrusion_role;
}
@ -115,16 +119,17 @@ std::vector<SurfaceFill> group_fills(const Layer &layer)
if (surface.surface_type == stInternalVoid)
has_internal_voids = true;
else {
const PrintRegionConfig &region_config = layerm.region()->config();
FlowRole extrusion_role = surface.is_top() ? frTopSolidInfill : (surface.is_solid() ? frSolidInfill : frInfill);
bool is_bridge = layer.id() > 0 && surface.is_bridge();
params.extruder = layerm.region()->extruder(extrusion_role);
params.pattern = layerm.region()->config().fill_pattern.value;
params.density = float(layerm.region()->config().fill_density);
params.pattern = region_config.fill_pattern.value;
params.density = float(region_config.fill_density);
if (surface.is_solid()) {
params.density = 100.f;
params.pattern = (surface.is_external() && ! is_bridge) ?
(surface.is_top() ? layerm.region()->config().top_fill_pattern.value : layerm.region()->config().bottom_fill_pattern.value) :
(surface.is_top() ? region_config.top_fill_pattern.value : region_config.bottom_fill_pattern.value) :
ipRectilinear;
} else if (params.density <= 0)
continue;
@ -136,7 +141,7 @@ std::vector<SurfaceFill> group_fills(const Layer &layer)
(surface.is_top() ? erTopSolidInfill : erSolidInfill) :
erInternalInfill);
params.bridge_angle = float(surface.bridge_angle);
params.angle = float(Geometry::deg2rad(layerm.region()->config().fill_angle.value));
params.angle = float(Geometry::deg2rad(region_config.fill_angle.value));
// calculate the actual flow we'll be using for this infill
params.flow = layerm.region()->flow(
@ -165,6 +170,10 @@ std::vector<SurfaceFill> group_fills(const Layer &layer)
} else
params.spacing = params.flow.spacing();
params.anchor_length = float(region_config.infill_anchor);
if (region_config.infill_anchor.percent)
params.anchor_length *= 0.01 * params.spacing;
auto it_params = set_surface_params.find(params);
if (it_params == set_surface_params.end())
it_params = set_surface_params.insert(it_params, params);
@ -367,8 +376,9 @@ void Layer::make_fills(FillAdaptive::Octree* adaptive_fill_octree, FillAdaptive:
// apply half spacing using this flow's own spacing and generate infill
FillParams params;
params.density = float(0.01 * surface_fill.params.density);
params.dont_adjust = surface_fill.params.dont_adjust; // false
params.density = float(0.01 * surface_fill.params.density);
params.dont_adjust = surface_fill.params.dont_adjust; // false
params.anchor_length = surface_fill.params.anchor_length;
for (ExPolygon &expoly : surface_fill.expolygons) {
// Spacing is modified by the filler to indicate adjustments. Reset it for each expolygon.

15
src/libslic3r/Fill/FillAdaptive.cpp
View file

@ -639,7 +639,6 @@ static inline Intersection* get_nearest_intersection(std::vector<std::pair<Inter
// translated in the direction of the intersection line (intersection.intersect_line).
static Line create_offset_line(Line offset_line, const Intersection &intersection, const double scaled_offset)
{
// 50% overlap of the extrusion lines to achieve strong bonding.
offset_line.translate((perp(intersection.closest_line->vector().cast<double>().normalized()) * (intersection.left ? scaled_offset : - scaled_offset)).cast<coord_t>());
// Extend the line by a small value to guarantee a collision with adjacent lines
offset_line.extend(coord_t(scaled_offset * 1.16)); // / cos(PI/6)
@ -767,8 +766,10 @@ static Polylines connect_lines_using_hooks(Polylines &&lines, const ExPolygon &b
lines_src.reserve(lines.size());
std::transform(lines.begin(), lines.end(), std::back_inserter(lines_src), [](const Line& l) { return Polyline{ l.a, l.b }; });
const float scaled_offset = float(scale_(spacing) * 0.7); // 30% overlap
const float scaled_trim_distance = float(scale_(spacing) * 0.5 * 0.75); // 25% overlap
// 19% overlap, slightly lower than the allowed overlap in Fill::connect_infill()
const float scaled_offset = float(scale_(spacing) * 0.81);
// 25% overlap
const float scaled_trim_distance = float(scale_(spacing) * 0.5 * 0.75);
// Keeping the vector of closest points outside the loop, so the vector does not need to be reallocated.
std::vector<std::pair<rtree_segment_t, size_t>> closest;
@ -1199,9 +1200,6 @@ static Polylines connect_lines_using_hooks(Polylines &&lines, const ExPolygon &b
return polylines_out;
}
//coord_t get_hook_length(const double spacing) { return coord_t(scale_(spacing)) * 2; }
coord_t get_hook_length(const double spacing) { return coord_t(scale_(spacing)) * 5; }
#ifndef NDEBUG
bool has_no_collinear_lines(const Polylines &polylines)
{
@ -1323,7 +1321,8 @@ void Filler::_fill_surface_single(
}
#endif /* ADAPTIVE_CUBIC_INFILL_DEBUG_OUTPUT */
coord_t hook_length = get_hook_length(this->spacing);
const auto hook_length = coord_t(std::min(scale_(this->spacing * 5), scale_(params.anchor_length)));
Polylines all_polylines_with_hooks = all_polylines.size() > 1 ? connect_lines_using_hooks(std::move(all_polylines), expolygon, this->spacing, hook_length) : std::move(all_polylines);
#ifdef ADAPTIVE_CUBIC_INFILL_DEBUG_OUTPUT
@ -1336,7 +1335,7 @@ void Filler::_fill_surface_single(
if (params.dont_connect || all_polylines_with_hooks.size() <= 1)
append(polylines_out, std::move(all_polylines_with_hooks));
else
connect_infill(chain_polylines(std::move(all_polylines_with_hooks)), expolygon, polylines_out, this->spacing, params, hook_length);
connect_infill(chain_polylines(std::move(all_polylines_with_hooks)), expolygon, polylines_out, this->spacing, params);
#ifdef ADAPTIVE_CUBIC_INFILL_DEBUG_OUTPUT
{

749
src/libslic3r/Fill/FillBase.cpp
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File diff suppressed because it is too large Load diff

9
src/libslic3r/Fill/FillBase.hpp
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@ -37,6 +37,9 @@ struct FillParams
// Fill density, fraction in <0, 1>
float density { 0.f };
// Length of an infill anchor along the perimeter.
float anchor_length { std::numeric_limits<float>::max() };
// Don't connect the fill lines around the inner perimeter.
bool dont_connect { false };
@ -124,9 +127,9 @@ protected:
virtual std::pair<float, Point> _infill_direction(const Surface *surface) const;
public:
static void connect_infill(Polylines &&infill_ordered, const ExPolygon &boundary, Polylines &polylines_out, const double spacing, const FillParams &params, const int hook_length = 0);
static void connect_infill(Polylines &&infill_ordered, const Polygons &boundary, const BoundingBox& bbox, Polylines &polylines_out, const double spacing, const FillParams &params, const int hook_length = 0);
static void connect_infill(Polylines &&infill_ordered, const std::vector<const Polygon*> &boundary, const BoundingBox &bbox, Polylines &polylines_out, double spacing, const FillParams &params, const int hook_length = 0);
static void connect_infill(Polylines &&infill_ordered, const ExPolygon &boundary, Polylines &polylines_out, const double spacing, const FillParams &params);
static void connect_infill(Polylines &&infill_ordered, const Polygons &boundary, const BoundingBox& bbox, Polylines &polylines_out, const double spacing, const FillParams &params);
static void connect_infill(Polylines &&infill_ordered, const std::vector<const Polygon*> &boundary, const BoundingBox &bbox, Polylines &polylines_out, double spacing, const FillParams &params);
static coord_t _adjust_solid_spacing(const coord_t width, const coord_t distance);

38
src/libslic3r/Fill/FillRectilinear2.cpp
View file

@ -2778,6 +2778,7 @@ bool FillRectilinear2::fill_surface_by_multilines(const Surface *surface, FillPa
return true;
Polylines fill_lines;
coord_t line_width = coord_t(scale_(this->spacing));
coord_t line_spacing = coord_t(scale_(this->spacing) / params.density);
std::pair<float, Point> rotate_vector = this->_infill_direction(surface);
for (const SweepParams &sweep : sweep_params) {
@ -2787,6 +2788,9 @@ bool FillRectilinear2::fill_surface_by_multilines(const Surface *surface, FillPa
double angle = rotate_vector.first + sweep.angle_base;
ExPolygonWithOffset poly_with_offset(poly_with_offset_base, - angle);
BoundingBox bounding_box = poly_with_offset.bounding_box_src();
// Don't produce infill lines, which fully overlap with the infill perimeter.
coord_t x_min = bounding_box.min.x() + line_width + coord_t(SCALED_EPSILON);
coord_t x_max = bounding_box.max.x() - line_width - coord_t(SCALED_EPSILON);
// extend bounding box so that our pattern will be aligned with other layers
// Transform the reference point to the rotated coordinate system.
Point refpt = rotate_vector.second.rotated(- angle);
@ -2800,20 +2804,23 @@ bool FillRectilinear2::fill_surface_by_multilines(const Surface *surface, FillPa
const size_t n_vlines = (bounding_box.max.x() - bounding_box.min.x() + line_spacing - 1) / line_spacing;
const double cos_a = cos(angle);
const double sin_a = sin(angle);
for (const SegmentedIntersectionLine &vline : slice_region_by_vertical_lines(poly_with_offset, n_vlines, bounding_box.min.x(), line_spacing)) {
for (auto it = vline.intersections.begin(); it != vline.intersections.end();) {
auto it_low = it ++;
assert(it_low->type == SegmentIntersection::OUTER_LOW);
if (it_low->type != SegmentIntersection::OUTER_LOW)
continue;
auto it_high = it;
assert(it_high->type == SegmentIntersection::OUTER_HIGH);
if (it_high->type == SegmentIntersection::OUTER_HIGH) {
fill_lines.emplace_back(Point(vline.pos, it_low->pos()).rotated(cos_a, sin_a), Point(vline.pos, it_high->pos()).rotated(cos_a, sin_a));
++ it;
for (const SegmentedIntersectionLine &vline : slice_region_by_vertical_lines(poly_with_offset, n_vlines, bounding_box.min.x(), line_spacing))
if (vline.pos > x_min) {
if (vline.pos >= x_max)
break;
for (auto it = vline.intersections.begin(); it != vline.intersections.end();) {
auto it_low = it ++;
assert(it_low->type == SegmentIntersection::OUTER_LOW);
if (it_low->type != SegmentIntersection::OUTER_LOW)
continue;
auto it_high = it;
assert(it_high->type == SegmentIntersection::OUTER_HIGH);
if (it_high->type == SegmentIntersection::OUTER_HIGH) {
fill_lines.emplace_back(Point(vline.pos, it_low->pos()).rotated(cos_a, sin_a), Point(vline.pos, it_high->pos()).rotated(cos_a, sin_a));
++ it;
}
}
}
}
}
if (fill_lines.size() > 1)
@ -2821,11 +2828,8 @@ bool FillRectilinear2::fill_surface_by_multilines(const Surface *surface, FillPa
if (params.dont_connect || fill_lines.size() <= 1)
append(polylines_out, std::move(fill_lines));
else {
// coord_t hook_length = 0;
coord_t hook_length = coord_t(scale_(this->spacing)) * 5;
connect_infill(std::move(fill_lines), poly_with_offset_base.polygons_outer, get_extents(surface->expolygon.contour), polylines_out, this->spacing, params, hook_length);
}
else
connect_infill(std::move(fill_lines), poly_with_offset_base.polygons_outer, get_extents(surface->expolygon.contour), polylines_out, this->spacing, params);
return true;
}