CGAL 5.6  3D Fast Intersection and Distance Computation (AABB Tree)

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.
CGAL::AABB_tree<AABBTraits>
AABBPrimitive
Public Types  
typedef unspecified_type  Ray_3 
Type of a 3D 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. More...  
Public Member Functions  
Intersection_distance  intersection_distance_object () const 
returns the intersection distance functor.  
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 boost::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: boost::optional<FT> operator()(const Ray_3& r, const Bounding_box& bbox)
. boost::optional<std::pair<FT, Intersection_and_primitive_id<Ray_3>::Type > > operator()(const Ray_3& r, const Primitive& primitive)
.
A common algorithm to compute the intersection between a bounding box and a ray is the slab method.