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ENH: improve supporting sharp tails of tree support

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1. sharp tails are supported by a sparse set of contact points which are
easier to remove than previously dense surrounding support.
   Organic tree support also has this feature, including all other smart
overhang detection techniques (small overhang and cantilever detection),
with the cost of slightly longer time to detect overhangs.
2. improve supporting overhang contours by adding contact points along
   contours.
  jira: STUDIO-3876
2. remove some redundant data structure.

Change-Id: If7f595348506a14aba2d0132d23f97d3539c1e1f
(cherry picked from commit e3cce09b9db12ced2841045ffd337b1f35494e6c)
(cherry picked from commit 507345deb193d895d0813fc913f00b0def7e62f9)
This commit is contained in:
Arthur 2024-03-26 11:39:30 +08:00 • committed by Noisyfox
parent 0b671e8852
commit 2577b9b3a6
5 changed files with 159 additions and 149 deletions
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6
src/libslic3r/Support/TreeSupport.hpp
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@ -380,7 +380,6 @@ public:
int avg_node_per_layer = 0;
float nodes_angle = 0;
bool has_overhangs = false;
bool has_sharp_tails = false;
bool has_cantilever = false;
double max_cantilever_dist = 0;
@ -397,6 +396,8 @@ public:
*/
ExPolygon m_machine_border;
enum OverhangType { Detected = 0, Enforced, SharpTail };
std::map<const ExPolygon*, OverhangType> overhang_types;
private:
/*!
* \brief Generator for model collision, avoidance and internal guide volumes
@ -416,6 +417,7 @@ private:
size_t m_highest_overhang_layer = 0;
std::vector<std::vector<MinimumSpanningTree>> m_spanning_trees;
std::vector< std::unordered_map<Line, bool, LineHash>> m_mst_line_x_layer_contour_caches;
float DO_NOT_MOVER_UNDER_MM = 0.0;
coordf_t MAX_BRANCH_RADIUS = 10.0;
coordf_t MIN_BRANCH_RADIUS = 0.5;
@ -476,7 +478,7 @@ private:
* \return For each layer, a list of points where the tree should connect
* with the model.
*/
void generate_contact_points(std::vector<std::vector<SupportNode*>>& contact_nodes, const std::vector<TreeSupport3D::SupportElements>& move_bounds);
void generate_contact_points(std::vector<std::vector<SupportNode*>>& contact_nodes);
/*!
* \brief Add a node to the next layer.