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Add overhang threshold for scarf joint seam (#4725)

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add overhang threshold for scarf joint seam
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SoftFever 2024-03-27 22:02:20 +08:00 • committed by GitHub
parent 116169ea03
commit dcb8d09af6
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10 changed files with 41 additions and 12 deletions
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10
src/libslic3r/GCode/SeamPlacer.cpp
View file

@ -1067,15 +1067,18 @@ void SeamPlacer::calculate_overhangs_and_layer_embedding(const PrintObject *po)
std::unique_ptr<PerimeterDistancer> current_layer_distancer = std::make_unique<PerimeterDistancer>(
to_unscaled_linesf(po->layers()[layer_idx]->lslices));
for (SeamCandidate &perimeter_point : layers[layer_idx].points) {
auto& layer_seams = layers[layer_idx];
for (SeamCandidate &perimeter_point : layer_seams.points) {
Vec2f point = Vec2f { perimeter_point.position.head<2>() };
if (prev_layer_distancer.get() != nullptr) {
perimeter_point.overhang = prev_layer_distancer->distance_from_lines<true>(point.cast<double>())
const auto _dist = prev_layer_distancer->distance_from_lines<true>(point.cast<double>());
perimeter_point.overhang = _dist
+ 0.6f * perimeter_point.perimeter.flow_width
- tan(SeamPlacer::overhang_angle_threshold)
* po->layers()[layer_idx]->height;
perimeter_point.overhang =
perimeter_point.overhang < 0.0f ? 0.0f : perimeter_point.overhang;
perimeter_point.unsupported_dist = _dist + 0.4f * perimeter_point.perimeter.flow_width;
}
if (should_compute_layer_embedding) { // search for embedded perimeter points (points hidden inside the print ,e.g. multimaterial join, best position for seam)
@ -1484,7 +1487,7 @@ void SeamPlacer::init(const Print &print, std::function<void(void)> throw_if_can
}
void SeamPlacer::place_seam(const Layer *layer, ExtrusionLoop &loop, bool external_first,
const Point &last_pos) const {
const Point &last_pos, float& overhang) const {
using namespace SeamPlacerImpl;
const PrintObject *po = layer->object();
// Must not be called with supprot layer.
@ -1546,6 +1549,7 @@ void SeamPlacer::place_seam(const Layer *layer, ExtrusionLoop &loop, bool extern
}
Point seam_point = Point::new_scale(seam_position.x(), seam_position.y());
overhang = layer_perimeters.points[seam_index].unsupported_dist;
if (loop.role() == ExtrusionRole::erPerimeter) { //Hopefully inner perimeter
const SeamCandidate &perimeter_point = layer_perimeters.points[seam_index];

5
src/libslic3r/GCode/SeamPlacer.hpp
View file

@ -1,6 +1,7 @@
#ifndef libslic3r_SeamPlacer_hpp_
#define libslic3r_SeamPlacer_hpp_
#include <limits>
#include <optional>
#include <vector>
#include <memory>
@ -66,6 +67,7 @@ struct SeamCandidate {
Perimeter &perimeter;
float visibility;
float overhang;
float unsupported_dist;
// distance inside the merged layer regions, for detecting perimeter points which are hidden indside the print (e.g. multimaterial join)
// Negative sign means inside the print, comes from EdgeGrid structure
float embedded_distance;
@ -141,8 +143,7 @@ public:
void init(const Print &print, std::function<void(void)> throw_if_canceled_func);
void place_seam(const Layer *layer, ExtrusionLoop &loop, bool external_first, const Point &last_pos) const;
void place_seam(const Layer *layer, ExtrusionLoop &loop, bool external_first, const Point &last_pos, float& overhang) const;
private:
void gather_seam_candidates(const PrintObject *po, const SeamPlacerImpl::GlobalModelInfo &global_model_info);
void calculate_candidates_visibility(const PrintObject *po,