Base class for Axis Aligned Bounding Box trees. More...
#include <geogram/mesh/mesh_AABB.h>
Protected Member Functions | |
| void | initialize (index_t nb, std::function< void(BOX &, index_t)> get_bbox) |
| Initializes this AABB. More... | |
| void | bbox_intersect_recursive (std::function< void(index_t)> action, const BOX &box, index_t node, index_t b, index_t e) const |
| Computes all the elements that have a bbox that intersects a given bbox in a sub-tree of the AABB tree. More... | |
| void | self_intersect_recursive (std::function< void(index_t, index_t)> action, index_t node1, index_t b1, index_t e1, index_t node2, index_t b2, index_t e2) const |
| Computes all the pairs of intersecting elements for two sub-trees of the AABB tree. More... | |
| void | other_intersect_recursive (std::function< void(index_t, index_t)> action, index_t node1, index_t b1, index_t e1, const AABB< BOX > *other, index_t node2, index_t b2, index_t e2) const |
| Computes all the pairs of intersecting elements for two sub-trees of two AABB trees. More... | |
| void | init_bboxes_recursive (index_t node_index, index_t b, index_t e, std::function< void(BOX &, index_t)> get_bbox) |
| Computes the hierarchy of bounding boxes recursively. More... | |
Static Protected Member Functions | |
| static index_t | max_node_index (index_t node_index, index_t b, index_t e) |
| Computes the maximum node index in a subtree. More... | |
Protected Attributes | |
| index_t | nb_ |
| vector< BOX > | bboxes_ |
Detailed Description
template<class BOX>
class GEO::AABB< BOX >
Base class for Axis Aligned Bounding Box trees.
- Template Parameters
-
BOX the box class (Box2d or Box3d).
Definition at line 60 of file mesh_AABB.h.
Member Function Documentation
◆ bbox_intersect_recursive()
|
inlineprotected |
Computes all the elements that have a bbox that intersects a given bbox in a sub-tree of the AABB tree.
Note that the tree structure is completely implicit, therefore the bounds of the (continuous) facet indices sequences that correspond to the elements contained in the two nodes are sent as well as the node indices.
- Parameters
-
[in] action a function that takes as argument an index_t (cell index) invoked for all cells that has a bounding box that overlaps box.[in] box the query box [in] node index of the first node of the AABB tree [in] b index of the first facet in node[in] e one position past the index of the last facet in node
Definition at line 96 of file mesh_AABB.h.
◆ init_bboxes_recursive()
|
inlineprotected |
Computes the hierarchy of bounding boxes recursively.
This function is generic and can be used to compute a bbox hierarchy of arbitrary elements.
- Parameters
-
[in] node_index the index of the root of the subtree [in] b first element index in the subtree [in] e one position past the last element index in the subtree [in] get_bbox a function that takes a Box3d& and an index_t, that computes the bbox of an element.
Definition at line 291 of file mesh_AABB.h.
◆ initialize()
|
inlineprotected |
Initializes this AABB.
- Parameters
-
[in] nb number of items. [in] get_bbox a function(Box&, index_t) that computes the Box associated with a given index, in [0..nb-1].
Definition at line 70 of file mesh_AABB.h.
◆ max_node_index()
|
inlinestaticprotected |
Computes the maximum node index in a subtree.
- Parameters
-
[in] node_index node index of the root of the subtree [in] b first facet index in the subtree [in] e one position past the last facet index in the subtree
- Returns
- the maximum node index in the subtree rooted at
node_index
Definition at line 267 of file mesh_AABB.h.
◆ other_intersect_recursive()
|
inlineprotected |
Computes all the pairs of intersecting elements for two sub-trees of two AABB trees.
Note that the tree structure is completely implicit, therefore the bounds of the (continuous) facet indices sequences that correspond to the elementss contained in the two nodes are sent as well as the node indices.
- Parameters
-
[in] action a function taking as arguments two index_t's, invoked of all pairs of elements that have overlapping bounding boxes. [in] node1 index of the first node of the AABB tree [in] b1 index of the first facet in node1[in] e1 one position past the index of the last facet in node1[in] other the second AABB tree [in] node2 index of the second node of the second AABB tree [in] b2 index of the first facet in node2[in] e2 one position past the index of the second facet in node2
Definition at line 212 of file mesh_AABB.h.
◆ self_intersect_recursive()
|
inlineprotected |
Computes all the pairs of intersecting elements for two sub-trees of the AABB tree.
Note that the tree structure is completely implicit, therefore the bounds of the (continuous) facet indices sequences that correspond to the elementss contained in the two nodes are sent as well as the node indices.
- Parameters
-
[in] action a function taking as arguments two index_t's, invoked of all pairs of elements that have overlapping bounding boxes. [in] node1 index of the first node of the AABB tree [in] b1 index of the first facet in node1[in] e1 one position past the index of the last facet in node1[in] node2 index of the second node of the AABB tree [in] b2 index of the first facet in node2[in] e2 one position past the index of the second facet in node2
Definition at line 143 of file mesh_AABB.h.
The documentation for this class was generated from the following file:
- geogram/mesh/mesh_AABB.h
