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ENH: use print volume to clip tree support

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So tree supports won't go outside the bed.

Known issue:
1. moving won't trigger support re-calculating, so if you want to
  clip the supports in a different way after moving, you need to change
  the support settings (eg change threshold angle to 31 degrees).
2. clipping with the occlusion region is not complete, and an error
  message of "outside toolpath" will still be popped because we use
  convex hull to detection confliction.

Jira: STUDIO-2036

Change-Id: I643b14618eb18ffa9825072c44f677e51b0ff937
(cherry picked from commit a6217824dc0f490027e16f80f810d176dec6004b)
This commit is contained in:
Arthur Tang 2022-12-15 13:03:53 +08:00 • committed by Lane.Wei
parent b144aae5bd
commit c07dcffe16
4 changed files with 38 additions and 17 deletions
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21
src/libslic3r/TreeSupport.cpp
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@ -704,6 +704,13 @@ TreeSupport::TreeSupport(PrintObject& object, const SlicingParameters &slicing_p
tree_support_branch_diameter_angle = 5.0;//is_slim ? 10.0 : 5.0;
// by default tree support needs no infill, unless it's tree hybrid which contains normal nodes.
with_infill = support_pattern != smpNone && support_pattern != smpDefault;
const PrintConfig& print_config = m_object->print()->config();
m_machine_border.contour = get_bed_shape_with_excluded_area(print_config);
m_machine_border.translate(-m_object->instances().front().shift); // align with the centered object
#ifdef SUPPORT_TREE_DEBUG_TO_SVG
SVG svg("SVG/machine_boarder.svg", m_object->bounding_box());
if (svg.is_opened()) svg.draw(m_machine_border, "yellow");
#endif
}
@ -2210,18 +2217,20 @@ void TreeSupport::draw_circles(const std::vector<std::vector<Node*>>& contact_no
//roof_areas = std::move(diff_ex(roof_areas, avoid_region_interface));
//roof_1st_layer = std::move(diff_ex(roof_1st_layer, avoid_region_interface));
roof_areas = avoid_object_remove_extra_small_parts(roof_areas, avoid_region_interface);
roof_areas = intersection_ex(roof_areas, m_machine_border);
roof_1st_layer = avoid_object_remove_extra_small_parts(roof_1st_layer, avoid_region_interface);
// roof_1st_layer and roof_areas may intersect, so need to subtract roof_areas from roof_1st_layer
roof_1st_layer = std::move(diff_ex(roof_1st_layer, roof_areas));
roof_1st_layer = intersection_ex(roof_1st_layer, m_machine_border);
// let supports touch objects when brim is on
auto avoid_region = m_ts_data->get_collision((layer_nr == 0 && has_brim) ? config.brim_object_gap : m_ts_data->m_xy_distance, layer_nr);
// base_areas = std::move(diff_ex(base_areas, avoid_region));
base_areas = avoid_object_remove_extra_small_parts(base_areas, avoid_region);
base_areas = std::move(diff_ex(base_areas, roof_areas));
base_areas = std::move(diff_ex(base_areas, roof_1st_layer));
base_areas = std::move(diff_ex(base_areas, roof_gap_areas));
base_areas = intersection_ex(base_areas, m_machine_border);
if (SQUARE_SUPPORT) {
// simplify support contours
@ -3504,16 +3513,6 @@ void TreeSupport::generate_contact_points(std::vector<std::vector<TreeSupport::N
BOOST_LOG_TRIVIAL(info) << "avg_node_per_layer=" << avg_node_per_layer << ", nodes_angle=" << nodes_angle;
}
#ifdef SUPPORT_TREE_DEBUG_TO_SVG
std::ofstream contact_nodes_out;
contact_nodes_out.open("./SVG/contact_nodes.txt");
if (contact_nodes_out.is_open()) {
for (int i = 0; i < contact_nodes.size(); i++) {
if (!contact_nodes[i].empty())
contact_nodes_out << i << std::endl;
}
}
#endif // SUPPORT_TREE_DEBUG_TO_SVG
}
void TreeSupport::insert_dropped_node(std::vector<Node*>& nodes_layer, Node* p_node)