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CGAL 6.0 - Fast Intersection and Distance Computation (AABB Tree)
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The concept AABBRayIntersectionTraits is a refinement of the concept AABBTraits. In addition to the types and functions required by AABBTraits it also requires function objects to calculate the distance of an intersection along a ray.
AABBTraits CGAL::AABB_traits_2<AABBGeomTraits_2,AABBPrimitive> CGAL::AABB_traits_3<AABBGeomTraits_3,AABBPrimitive> CGAL::AABB_tree<AABBTraits> AABBPrimitive Public Types | |
| typedef unspecified_type | Ray |
| Type of a ray. | |
| typedef unspecified_type | Vector |
| Type of a vector. | |
| typedef AABBTraits::Bounding_box | Bounding_box |
| Type of bounding box. | |
| typedef unspecified_type | Construct_source |
| A functor object to construct the source point of a ray. | |
| typedef unspecified_type | Cartesian_const_iterator |
A model of CartesianConstIterator_2 or CartesianConstIterator_3, depending on the dimension of Vector. | |
| typedef unspecified_type | Construct_cartesian_const_iterator |
A model of ConstructCartesianConstIterator_2 or ConstructCartesianConstIterator_3, depending on the dimension of Vector. | |
| typedef unspecified_type | Construct_vector |
| A functor object to construct a vector having the same direction as a ray. | |
| typedef unspecified_type | Intersection_distance |
| A functor object to compute the distance between the source of a ray and its closest intersection point between the ray and a primitive or a bounding box. | |
Public Member Functions | |
| Construct_source | construct_source_object () |
returns the Construct_source functor. | |
| Construct_cartesian_const_iterator | construct_cartesian_const_iterator_object () |
returns the Construct_cartesian_const_iterator functor. | |
| Construct_vector | construct_vector_object () |
returns the Construct_vector functor. | |
| Intersection_distance | intersection_distance_object () const |
| returns the intersection distance functor. | |
A functor object to construct the source point of a ray.
Provides the operator: Point operator()(const Ray&);
A functor object to construct a vector having the same direction as a ray.
Provides the operator: Vector operator()(const Ray&);
A functor object to compute the distance between the source of a ray and its closest intersection point between the ray and a primitive or a bounding box.
An empty std::optional is returned, if there is no intersection. When there is an intersection, an object of type FT is returned such that if i1 and i2 are two intersection points, then i1 is closer to the source of the ray than i2 iff n1 < n2, n1 and n2 being the numbers returned for i1 and i2 respectively.
Provides the operators: std::optional<FT> operator()(const Ray& r, const Bounding_box& bbox). std::optional<std::pair<FT, Intersection_and_primitive_id<Ray>::Type > > operator()(const Ray& r, const Primitive& primitive).
A common algorithm to compute the intersection between a bounding box and a ray is the slab method.