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FIX: tree support's enforcers inside a hole were wrong

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Previously holes of enforcer_polygons was taken as contours,
which caused enforcers inside a hole were too large.

Jira: STUDIO-3877
Change-Id: If38c34e2469b822012a2ed0b082783563fe99228
This commit is contained in:
Arthur 2023-08-07 11:27:09 +08:00 • committed by lane.wei
parent 22171e6534
commit c364dc733b
1 changed files with 16 additions and 14 deletions
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30
src/libslic3r/TreeSupport.cpp
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@ -1134,17 +1134,11 @@ void TreeSupport::detect_overhangs(bool detect_first_sharp_tail_only)
Polygons lower_layer_polygons = (layer_nr == 0) ? Polygons() : to_polygons(lower_layer->lslices);
Polygons& enforcer = enforcers[layer_nr];
if (!enforcer.empty()) {
Polygons enforcer_polygons = diff(intersection(layer->lslices, enforcer),
ExPolygons enforcer_polygons = diff_ex(intersection_ex(layer->lslices, enforcer),
// Inflate just a tiny bit to avoid intersection of the overhang areas with the object.
expand(lower_layer_polygons, 0.05f * no_interface_offset, SUPPORT_SURFACES_OFFSET_PARAMETERS));
// coconut: enforcer can't do offset2_ex, otherwise faces with angle near 90 degrees can't have enforcers, which
// is not good. For example: tails of animals needs extra support except the lowest tip.
//enforcer = std::move(offset2_ex(enforcer, -0.1 * extrusion_width_scaled, 0.1 * extrusion_width_scaled));
enforcer_polygons = offset(enforcer_polygons, 0.1 * extrusion_width_scaled);
for (const Polygon& poly : enforcer_polygons) {
ts_layer->overhang_areas.emplace_back(poly);
ts_layer->overhang_types.emplace(&ts_layer->overhang_areas.back(), SupportLayer::Enforced);
}
append(ts_layer->overhang_areas, enforcer_polygons);
ts_layer->overhang_types.emplace(&ts_layer->overhang_areas.back(), SupportLayer::Enforced);
}
}
@ -1163,11 +1157,19 @@ void TreeSupport::detect_overhangs(bool detect_first_sharp_tail_only)
svg.draw(layer->overhang_areas, "orange");
if (blockers.size() > layer->id())
svg.draw(blockers[layer->id()], "red");
for (auto& overhang : layer->overhang_areas) {
double aarea = overhang.area()/ area_thresh_well_supported;
auto pt = get_extents(overhang).center();
char x[20]; sprintf(x, "%.2f", aarea);
svg.draw_text(pt, x, "red");
}
if (enforcers.size() > layer->id()) {
SVG svg(format("SVG/enforcer_%s.svg", layer->print_z), m_object->bounding_box());
if (svg.is_opened()) {
svg.draw_outline(m_object->get_layer(layer->id())->lslices, "yellow");
svg.draw(enforcers[layer->id()], "red");
}
}
if (blockers.size() > layer->id()) {
SVG svg(format("SVG/blocker_%s.svg", layer->print_z), m_object->bounding_box());
if (svg.is_opened()) {
svg.draw_outline(m_object->get_layer(layer->id())->lslices, "yellow");
svg.draw(blockers[layer->id()], "red");
}
}
}