The RayIntersector class is used to detect the intersection points between a Ray and a set of Actor[s]. More...

#include <RayIntersector.hpp>

Inheritance diagram for vl::RayIntersector:

Public Member Functions
	RayIntersector ()
const ActorCollection *	actors () const
	The Actors against which the intersection test is performed.
ActorCollection *	actors ()
	The Actors against which the intersection test is performed.
const Ray &	ray () const
	The ray in world coordinates to be intersected with the actors()
void	setRay (const Ray &ray)
	The ray in world coordinates to be intersected with the actors()
const Frustum &	frustum () const
	The frustum in world coordinates used to cull the objects.
void	setFrustum (const Frustum &frustum)
	The frustum in world coordinates used to cull the objects.
const std::vector< ref < RayIntersection > > &	intersections () const
	The intersection points detected by the last intersect() call sorted according to their distance (the first one is the closest).
void	intersect ()
	Executes the intersection test.
void	intersect (const Ray &ray, SceneManager *scene_manager)
	Computes the intersections between the given ray and the Actor[s] contained in the given scene manager.
Protected Member Functions
void	intersect (Actor *act)
void	intersectGeometry (Actor act, Geometry geom)
template<class T >
void	intersectTriangle (const T &a, const T &b, const T &c, int ia, int ib, int ic, Actor , Geometry geom, DrawCall *prim, int prim_idx)
Static Protected Member Functions
static bool	sorter (const ref< RayIntersection > &a, const ref< RayIntersection > &b)
Protected Attributes
Frustum	mFrustum
std::vector< ref < RayIntersection > >	mIntersections
ref< ActorCollection >	mActors
Ray	mRay

Detailed Description

The RayIntersector class is used to detect the intersection points between a Ray and a set of Actor[s].

Definition at line 133 of file RayIntersector.hpp.

Constructor & Destructor Documentation

vl::RayIntersector::RayIntersector ( ) [inline]

Definition at line 138 of file RayIntersector.hpp.

References VL_DEBUG_SET_OBJECT_NAME.

Member Function Documentation

const ActorCollection* vl::RayIntersector::actors ( ) const [inline]

The Actors against which the intersection test is performed.

Definition at line 145 of file RayIntersector.hpp.

Referenced by intersect().

ActorCollection* vl::RayIntersector::actors ( ) [inline]

The Actors against which the intersection test is performed.

Definition at line 147 of file RayIntersector.hpp.

const Ray& vl::RayIntersector::ray ( ) const [inline]

The ray in world coordinates to be intersected with the actors()

Definition at line 150 of file RayIntersector.hpp.

Referenced by intersectTriangle().

void vl::RayIntersector::setRay ( const Ray & ray ) [inline]

The ray in world coordinates to be intersected with the actors()

Definition at line 152 of file RayIntersector.hpp.

Referenced by intersect().

const Frustum& vl::RayIntersector::frustum ( ) const [inline]

The frustum in world coordinates used to cull the objects.

Definition at line 155 of file RayIntersector.hpp.

Referenced by intersect().

void vl::RayIntersector::setFrustum ( const Frustum & frustum ) [inline]

The frustum in world coordinates used to cull the objects.

Definition at line 157 of file RayIntersector.hpp.

const std::vector< ref<RayIntersection> >& vl::RayIntersector::intersections ( ) const [inline]

The intersection points detected by the last intersect() call sorted according to their distance (the first one is the closest).

Definition at line 160 of file RayIntersector.hpp.

void RayIntersector::intersect ( )

Executes the intersection test.

Note:: Before calling this function the transforms and the bounding volumes of the Actor[s] to be intersected must be updated, in this order.; All the intersections are mande on the Actor's LOD level #0.

Definition at line 46 of file RayIntersector.cpp.

References actors(), vl::Frustum::cull(), frustum(), mIntersections, vl::Collection< T >::size(), and sorter().

Referenced by intersect().

void RayIntersector::intersect	(	const Ray &	ray,
		SceneManager *	scene_manager
	)

Computes the intersections between the given ray and the Actor[s] contained in the given scene manager.

This is an utility function equivalent to:

 intersector->actors()->clear();
 scene_manager->extractActors( *intersector->actors() );
 intersector->setRay(ray);
 intersector->intersect();

Definition at line 38 of file RayIntersector.cpp.

References actors(), vl::Collection< T >::clear(), vl::SceneManager::extractActors(), intersect(), and setRay().

static bool vl::RayIntersector::sorter	(	const ref< RayIntersection > &	a,
		const ref< RayIntersection > &	b
	)		`[inline, static, protected]`

Definition at line 180 of file RayIntersector.hpp.

Referenced by intersect().

void RayIntersector::intersect ( Actor * act ) [protected]

Definition at line 60 of file RayIntersector.cpp.

References intersectGeometry(), and vl::Actor::lod().

void RayIntersector::intersectGeometry	(	Actor *	act,
		Geometry *	geom
	)		`[protected]`

Definition at line 67 of file RayIntersector.cpp.

References vl::Collection< T >::at(), vl::VertexAttribInfo::data(), vl::Geometry::drawCalls(), vl::ArrayAbstract::getAsVec3(), vl::TriangleIterator::hasNext(), intersectTriangle(), NULL, vl::Collection< T >::size(), vl::Actor::transform(), vl::DrawCall::triangleIterator(), vl::VA_Position, vl::Geometry::vertexArray(), vl::Geometry::vertexAttribArray(), and vl::Transform::worldMatrix().

Referenced by intersect().

template<class T >

void RayIntersector::intersectTriangle	(	const T &	a,
		const T &	b,
		const T &	c,
		int	ia,
		int	ib,
		int	ic,
		Actor *	act,
		Geometry *	geom,
		DrawCall *	prim,
		int	prim_idx
	)		`[protected]`