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WIP Tree Supports: Enabled support enforcers / blockers

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This commit is contained in:
Vojtech Bubnik 2022-08-15 10:16:16 +02:00
parent 0cdc482615
commit 85e9ae75bb
2 changed files with 66 additions and 14 deletions
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71
src/libslic3r/TreeSupport.cpp
View File

@ -272,13 +272,47 @@ static bool layer_has_overhangs(const Layer &layer)
return out;
}
[[nodiscard]] static const std::vector<Polygons> generate_overhangs(const PrintObject &print_object)
{
std::vector<Polygons> out(print_object.layer_count(), Polygons{});
const bool support_auto = print_object.config().support_material_auto.value;
std::vector<Polygons> enforcers_layers{ print_object.slice_support_enforcers() };
std::vector<Polygons> blockers_layers{ print_object.slice_support_blockers() };
print_object.project_and_append_custom_facets(false, EnforcerBlockerType::ENFORCER, enforcers_layers);
print_object.project_and_append_custom_facets(false, EnforcerBlockerType::BLOCKER, blockers_layers);
tbb::parallel_for(tbb::blocked_range<size_t>(1, out.size()),
[&print_object, &enforcers_layers, &blockers_layers, support_auto, &out](const tbb::blocked_range<size_t> &range) {
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx)
if (layer_has_overhangs(*print_object.get_layer(layer_idx))) {
Polygons overhangs;
const bool has_enforcers = ! enforcers_layers.empty() && ! enforcers_layers[layer_idx].empty();
if (support_auto) {
overhangs = layer_overhangs(*print_object.get_layer(layer_idx));
if (! blockers_layers.empty() && ! blockers_layers[layer_idx].empty())
// Has some support blockers at this layer, apply them to the overhangs.
// Enforcers have priority over blockers: Clip blockers by enforcers.
overhangs = diff(overhangs, has_enforcers ? diff(blockers_layers[layer_idx], enforcers_layers[layer_idx]) : blockers_layers[layer_idx]);
} else if (has_enforcers) {
// Has some support enforcers at this layer, apply them to the overhangs.
overhangs = intersection(layer_overhangs(*print_object.get_layer(layer_idx)), enforcers_layers[layer_idx]);
} else
continue;
out[layer_idx] = std::move(overhangs);
}
});
return out;
}
/*!
* \brief Precalculates all avoidances, that could be required.
*
* \param storage[in] Background storage to access meshes.
* \param currently_processing_meshes[in] Indexes of all meshes that are processed in this iteration
*/
LayerIndex precalculate(const Print &print, const TreeSupport::TreeSupportSettings &config, const std::vector<size_t> &object_ids, TreeModelVolumes &volumes)
static [[nodiscard]] LayerIndex precalculate(const Print &print, const std::vector<Polygons> &overhangs, const TreeSupport::TreeSupportSettings &config, const std::vector<size_t> &object_ids, TreeModelVolumes &volumes)
{
// calculate top most layer that is relevant for support
LayerIndex max_layer = 0;
@ -286,7 +320,7 @@ LayerIndex precalculate(const Print &print, const TreeSupport::TreeSupportSettin
const PrintObject &print_object = *print.get_object(object_id);
int max_support_layer_id = 0;
for (int layer_id = 1; layer_id < print_object.layer_count(); ++ layer_id)
if (layer_has_overhangs(*print_object.get_layer(layer_id)))
if (! overhangs[layer_id].empty())
max_support_layer_id = layer_id;
max_layer = std::max(max_support_layer_id - int(config.z_distance_top_layers), 0);
}
@ -310,6 +344,9 @@ void TreeSupport::generateSupportAreas(PrintObject& print_object)
void TreeSupport::generateSupportAreas(Print &print, const BuildVolume &build_volume, const std::vector<size_t> &print_object_ids)
{
g_showed_critical_error = false;
g_showed_performance_warning = false;
std::vector<std::pair<TreeSupport::TreeSupportSettings, std::vector<size_t>>> grouped_meshes = group_meshes(print, print_object_ids);
if (grouped_meshes.empty())
return;
@ -347,8 +384,15 @@ void TreeSupport::generateSupportAreas(Print &print, const BuildVolume &build_vo
PrintObject &print_object = *print.get_object(processing.second.front());
m_volumes = TreeModelVolumes(print_object, build_volume, m_config.maximum_move_distance, m_config.maximum_move_distance_slow, processing.second.front(), m_progress_multiplier, m_progress_offset, /* additional_excluded_areas */{});
//FIXME generating overhangs just for the furst mesh of the group.
assert(processing.second.size() == 1);
std::vector<Polygons> overhangs = generate_overhangs(*print.get_object(processing.second.front()));
// ### Precalculate avoidances, collision etc.
size_t num_support_layers = precalculate(print, processing.first, processing.second, m_volumes);
size_t num_support_layers = precalculate(print, overhangs, processing.first, processing.second, m_volumes);
if (num_support_layers == 0)
continue;
auto t_precalc = std::chrono::high_resolution_clock::now();
// value is the area where support may be placed. As this is calculated in CreateLayerPathing it is saved and reused in drawAreas
@ -360,8 +404,9 @@ void TreeSupport::generateSupportAreas(Print &print, const BuildVolume &build_vo
SupportGeneratorLayersPtr top_interface_layers(num_support_layers, nullptr);
SupportGeneratorLayersPtr intermediate_layers(num_support_layers, nullptr);
SupportGeneratorLayerStorage layer_storage;
for (size_t mesh_idx : processing.second)
generateInitialAreas(*print.get_object(mesh_idx), move_bounds, top_contacts, top_interface_layers, layer_storage);
generateInitialAreas(*print.get_object(mesh_idx), overhangs, move_bounds, top_contacts, top_interface_layers, layer_storage);
auto t_gen = std::chrono::high_resolution_clock::now();
// ### Propagate the influence areas downwards.
@ -373,7 +418,7 @@ void TreeSupport::generateSupportAreas(Print &print, const BuildVolume &build_vo
auto t_place = std::chrono::high_resolution_clock::now();
// ### draw these points as circles
drawAreas(*print.get_object(processing.second.front()), move_bounds,
drawAreas(*print.get_object(processing.second.front()), overhangs, move_bounds,
bottom_contacts, top_contacts, intermediate_layers, layer_storage);
auto t_draw = std::chrono::high_resolution_clock::now();
@ -1011,6 +1056,7 @@ inline SupportGeneratorLayer& layer_allocate(
void TreeSupport::generateInitialAreas(
const PrintObject &print_object,
const std::vector<Polygons> &overhangs,
std::vector<std::set<SupportElement*>> &move_bounds,
SupportGeneratorLayersPtr &top_contacts,
SupportGeneratorLayersPtr &top_interface_layers,
@ -1049,11 +1095,12 @@ void TreeSupport::generateInitialAreas(
std::mutex critical_sections;
tbb::parallel_for(tbb::blocked_range<size_t>(1, num_support_layers - z_distance_delta),
[this, &print_object, &mesh_config, &mesh_group_settings, &support_params, z_distance_delta, xy_overrides_z, force_tip_to_roof, roof_enabled, support_roof_layers, extra_outset, circle_length_to_half_linewidth_change, connect_length, max_overhang_insert_lag,
[this, &print_object, &overhangs, &mesh_config, &mesh_group_settings, &support_params,
z_distance_delta, xy_overrides_z, force_tip_to_roof, roof_enabled, support_roof_layers, extra_outset, circle_length_to_half_linewidth_change, connect_length, max_overhang_insert_lag,
&base_circle, &critical_sections, &top_contacts, &layer_storage, &already_inserted,
&move_bounds, &base_radius](const tbb::blocked_range<size_t> &range) {
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx) {
if (! layer_has_overhangs(*print_object.get_layer(layer_idx + z_distance_delta)))
if (overhangs[layer_idx + z_distance_delta].empty())
continue;
// take the least restrictive avoidance possible
Polygons relevant_forbidden;
@ -1165,7 +1212,7 @@ void TreeSupport::generateInitialAreas(
// even if it is larger than the minimum_roof_area when it is only larger because of the support horizontal expansion and
// it would not have a roof if the overhang is offset by support roof horizontal expansion instead. (At least this is the current behavior of the regular support)
std::vector<std::pair<ExPolygon, bool>> overhang_processing;
Polygons overhang_raw = layer_overhangs(*print_object.get_layer(layer_idx + z_distance_delta));
const Polygons &overhang_raw = overhangs[layer_idx + z_distance_delta];
Polygons overhang_regular = safeOffsetInc(overhang_raw, mesh_group_settings.support_offset, relevant_forbidden, mesh_config.min_radius * 1.75 + mesh_config.xy_min_distance, 0, 1);
// offset ensures that areas that could be supported by a part of a support line, are not considered unsupported overhang
Polygons remaining_overhang = intersection(diff(offset(union_ex(overhang_raw), mesh_group_settings.support_offset, jtMiter, 1.2), offset(union_ex(overhang_regular), mesh_config.support_line_width * 0.5, jtMiter, 1.2)), relevant_forbidden);
@ -1226,7 +1273,7 @@ void TreeSupport::generateInitialAreas(
Polygons overhang_roofs;
if (roof_enabled) {
static constexpr const coord_t support_roof_offset = 0;
overhang_roofs = safeOffsetInc(layer_overhangs(*print_object.get_layer(layer_idx + z_distance_delta)), support_roof_offset, relevant_forbidden, mesh_config.min_radius * 2 + mesh_config.xy_min_distance, 0, 1);
overhang_roofs = safeOffsetInc(overhangs[layer_idx + z_distance_delta], support_roof_offset, relevant_forbidden, mesh_config.min_radius * 2 + mesh_config.xy_min_distance, 0, 1);
remove_small(overhang_roofs, mesh_group_settings.minimum_roof_area);
overhang_regular = diff(overhang_regular, overhang_roofs);
for (ExPolygon &roof_part : union_ex(overhang_roofs))
@ -2558,6 +2605,7 @@ void TreeSupport::dropNonGraciousAreas(
void TreeSupport::finalizeInterfaceAndSupportAreas(
const PrintObject &print_object,
const std::vector<Polygons> &overhangs,
std::vector<Polygons> &support_layer_storage,
std::vector<Polygons> &support_roof_storage,
@ -2641,7 +2689,7 @@ void TreeSupport::finalizeInterfaceAndSupportAreas(
// one sample at 0 layers below, another at m_config.support_bottom_layers. In-between samples at m_config.performance_interface_skip_layers distance from each other.
const size_t sample_layer = static_cast<size_t>(std::max(0, (static_cast<int>(layer_idx) - static_cast<int>(layers_below)) - static_cast<int>(m_config.z_distance_bottom_layers)));
//FIXME subtract the wipe tower
append(floor_layer, intersection(layer_outset, layer_overhangs(*print_object.get_layer(sample_layer))));
append(floor_layer, intersection(layer_outset, overhangs[sample_layer]));
if (layers_below < m_config.support_bottom_layers)
layers_below = std::min(layers_below + m_config.performance_interface_skip_layers, m_config.support_bottom_layers);
else
@ -2682,6 +2730,7 @@ void TreeSupport::finalizeInterfaceAndSupportAreas(
void TreeSupport::drawAreas(
PrintObject &print_object,
const std::vector<Polygons> &overhangs,
std::vector<std::set<SupportElement*>> &move_bounds,
SupportGeneratorLayersPtr &bottom_contacts,
@ -2739,7 +2788,7 @@ void TreeSupport::drawAreas(
}
}
finalizeInterfaceAndSupportAreas(print_object, support_layer_storage, support_roof_storage,
finalizeInterfaceAndSupportAreas(print_object, overhangs, support_layer_storage, support_roof_storage,
bottom_contacts, top_contacts, intermediate_layers, layer_storage);
auto t_end = std::chrono::high_resolution_clock::now();

7
src/libslic3r/TreeSupport.hpp
View File

@ -16,7 +16,7 @@
#include "BoundingBox.hpp"
// #define TREE_SUPPORT_SHOW_ERRORS
#define TREE_SUPPORT_SHOW_ERRORS
#define SUPPORT_TREE_CIRCLE_RESOLUTION 25 // The number of vertices in each circle.
@ -716,7 +716,8 @@ private:
* \param storage[in] Background storage, required for adding roofs.
*/
void generateInitialAreas(const PrintObject &print_object,
std::vector<std::set<SupportElement*>> &move_bounds,
const std::vector<Polygons> &overhangs,
std::vector<std::set<SupportElement*>> &move_bounds,
SupportGeneratorLayersPtr &top_contacts,
SupportGeneratorLayersPtr &top_interface_layers,
SupportGeneratorLayerStorage &layer_storage);
@ -828,6 +829,7 @@ private:
*/
void finalizeInterfaceAndSupportAreas(
const PrintObject &print_object,
const std::vector<Polygons> &overhangs,
std::vector<Polygons> &support_layer_storage,
std::vector<Polygons> &support_roof_storage,
@ -844,6 +846,7 @@ private:
*/
void drawAreas(
PrintObject &print_object,
const std::vector<Polygons> &overhangs,
std::vector<std::set<SupportElement*>> &move_bounds,
SupportGeneratorLayersPtr &bottom_contacts,