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. More...

ActorCollection *	actors ()
	The Actors against which the intersection test is performed. More...

const Ray &	ray () const
	The ray in world coordinates to be intersected with the actors() More...

void	setRay (const Ray &ray)
	The ray in world coordinates to be intersected with the actors() More...

const Frustum &	frustum () const
	The frustum in world coordinates used to cull the objects. More...

void	setFrustum (const Frustum &frustum)
	The frustum in world coordinates used to cull the objects. More...

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). More...

void	intersect ()
	Executes the intersection test. More...

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. More...

Public Member Functions inherited from vl::Object
	Object ()
	Constructor. More...

	Object (const Object &other)
	Copy constructor: copies the name, ref count mutex and user data. More...

Object &	operator= (const Object &other)
	Copy operator: copies the object's name, ref count mutex and user data. More...

const std::string &	objectName () const
	The name of the object, by default set to the object's class name. More...

void	setObjectName (const char *name)
	The name of the object, by default set to the object's class name in debug builds. More...

void	setObjectName (const std::string &name)
	The name of the object, by default set to the object's class name in debug builds. More...

void	setRefCountMutex (IMutex *mutex)
	The mutex used to protect the reference counting of an Object across multiple threads. More...

IMutex *	refCountMutex ()
	The mutex used to protect the reference counting of an Object across multiple threads. More...

const IMutex *	refCountMutex () const
	The mutex used to protect the reference counting of an Object across multiple threads. More...

int	referenceCount () const
	Returns the number of references of an object. More...

void	incReference () const
	Increments the reference count of an object. More...

void	decReference ()
	Decrements the reference count of an object and deletes it if both automaticDelete() is `true` the count reaches 0. More...

void	setAutomaticDelete (bool autodel_on)
	If set to true the Object is deleted when its reference count reaches 0. More...

bool	automaticDelete () const
	If set to true the Object is deleted when its reference count reaches 0. More...

template<class T >
T *	as ()
	Casts an Object to the specified class. More...

template<class T >
const T *	as () const
	Casts an Object to the specified class. More...

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)

Protected Member Functions inherited from vl::Object
virtual	~Object ()

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

Protected Attributes inherited from vl::Object
std::string	mObjectName

IMutex *	mRefCountMutex

int	mReferenceCount

bool	mAutomaticDelete

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

◆ RayIntersector()

vl::RayIntersector::RayIntersector ( )

inline

Definition at line 138 of file RayIntersector.hpp.

Member Function Documentation

◆ actors() [1/2]

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().

◆ actors() [2/2]

ActorCollection* vl::RayIntersector::actors ( )

inline

The Actors against which the intersection test is performed.

Definition at line 147 of file RayIntersector.hpp.

◆ frustum()

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().

◆ intersect() [1/3]

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().

◆ intersect() [2/3]

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::extractVisibleActors(), intersect(), NULL, and setRay().

◆ intersect() [3/3]

void RayIntersector::intersect ( Actor * act )

protected

Definition at line 60 of file RayIntersector.cpp.

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

◆ intersectGeometry()

void RayIntersector::intersectGeometry	(	Actor *	act,
		Geometry *	geom
	)

protected

Definition at line 67 of file RayIntersector.cpp.

References vl::Geometry::drawCalls(), vl::ArrayAbstract::getAsVec3(), vl::TriangleIterator::hasNext(), intersectTriangle(), vl::Actor::transform(), vl::DrawCall::triangleIterator(), vl::Geometry::vertexArray(), and vl::Transform::worldMatrix().

Referenced by intersect().

◆ intersections()

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.

◆ intersectTriangle()

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

Definition at line 98 of file RayIntersector.cpp.

References vl::cross(), vl::Ray::direction(), vl::dot(), mIntersections, vl::Vector3< T_Scalar >::normalize(), vl::Ray::origin(), ray(), vl::RayIntersection::setActor(), vl::RayIntersection::setDistance(), vl::RayIntersectionGeometry::setGeometry(), vl::RayIntersection::setIntersectionPoint(), vl::RayIntersectionGeometry::setPrimitives(), vl::RayIntersectionGeometry::setTriangle(), and vl::RayIntersectionGeometry::setTriangleIndex().

Referenced by intersectGeometry().

◆ ray()

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().

◆ setFrustum()

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.

◆ setRay()

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().

◆ sorter()

static bool vl::RayIntersector::sorter	(	const ref< RayIntersection > &	a,
		const ref< RayIntersection > &	b
	)

inlinestaticprotected

Definition at line 180 of file RayIntersector.hpp.

Referenced by intersect().

Member Data Documentation

◆ mActors

ref<ActorCollection> vl::RayIntersector::mActors

protected

Definition at line 192 of file RayIntersector.hpp.

◆ mFrustum

Frustum vl::RayIntersector::mFrustum

protected

Definition at line 190 of file RayIntersector.hpp.

◆ mIntersections

std::vector< ref<RayIntersection> > vl::RayIntersector::mIntersections

protected

Definition at line 191 of file RayIntersector.hpp.

Referenced by intersect(), and intersectTriangle().

◆ mRay

Ray vl::RayIntersector::mRay

protected

Definition at line 193 of file RayIntersector.hpp.

The documentation for this class was generated from the following files:

C:/git/VL/src/vlGraphics/RayIntersector.hpp
C:/git/VL/src/vlGraphics/RayIntersector.cpp

Public Member Functions

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ RayIntersector()

Member Function Documentation

◆ actors() [1/2]

◆ actors() [2/2]

◆ frustum()

◆ intersect() [1/3]

◆ intersect() [2/3]

◆ intersect() [3/3]

◆ intersectGeometry()

◆ intersections()

◆ intersectTriangle()

◆ ray()

◆ setFrustum()

◆ setRay()

◆ sorter()

Member Data Documentation

◆ mActors

◆ mFrustum

◆ mIntersections

◆ mRay