openscenegraph
Public Types | Public Member Functions | Protected Attributes | List of all members
osg::ShadowVolumeOccluder Class Reference

Public Types

typedef std::vector< PolytopeHoleList

Public Member Functions

 ShadowVolumeOccluder (const ShadowVolumeOccluder &svo)
 ShadowVolumeOccluder ()
bool operator< (const ShadowVolumeOccluder &svo) const
bool computeOccluder (const NodePath &nodePath, const ConvexPlanarOccluder &occluder, CullStack &cullStack, bool createDrawables=false)
void disableResultMasks ()
void pushCurrentMask ()
void popCurrentMask ()
bool matchProjectionMatrix (const osg::Matrix &matrix) const
void setNodePath (NodePath &nodePath)
NodePathgetNodePath ()
const NodePathgetNodePath () const
float getVolume () const
PolytopegetOccluder ()
const PolytopegetOccluder () const
HoleListgetHoleList ()
const HoleListgetHoleList () const
bool contains (const std::vector< Vec3 > &vertices)
bool contains (const BoundingSphere &bound)
bool contains (const BoundingBox &bound)
void transformProvidingInverse (const osg::Matrix &matrix)

Protected Attributes

float _volume
NodePath _nodePath
ref_ptr< const RefMatrix_projectionMatrix
Polytope _occluderVolume
HoleList _holeList

Detailed Description

ShadowVolumeOccluder is a helper class for implementing shadow occlusion culling.

Member Typedef Documentation

Constructor & Destructor Documentation

osg::ShadowVolumeOccluder::ShadowVolumeOccluder ( const ShadowVolumeOccluder svo)
inline
osg::ShadowVolumeOccluder::ShadowVolumeOccluder ( )
inline

Member Function Documentation

bool osg::ShadowVolumeOccluder::computeOccluder ( const NodePath nodePath,
const ConvexPlanarOccluder occluder,
CullStack cullStack,
bool  createDrawables = false 
)

compute the shadow volume occluder.

bool osg::ShadowVolumeOccluder::contains ( const std::vector< Vec3 > &  vertices)

return true if the specified vertex list is contained entirely within this shadow occluder volume.

bool osg::ShadowVolumeOccluder::contains ( const BoundingSphere bound)

return true if the specified bounding sphere is contained entirely within this shadow occluder volume.

bool osg::ShadowVolumeOccluder::contains ( const BoundingBox bound)

return true if the specified bounding box is contained entirely within this shadow occluder volume.

void osg::ShadowVolumeOccluder::disableResultMasks ( )
inline
HoleList& osg::ShadowVolumeOccluder::getHoleList ( )
inline

return the list of holes.

const HoleList& osg::ShadowVolumeOccluder::getHoleList ( ) const
inline

return the const list of holes.

NodePath& osg::ShadowVolumeOccluder::getNodePath ( )
inline
const NodePath& osg::ShadowVolumeOccluder::getNodePath ( ) const
inline
Polytope& osg::ShadowVolumeOccluder::getOccluder ( )
inline

return the occluder polytope.

const Polytope& osg::ShadowVolumeOccluder::getOccluder ( ) const
inline

return the const occluder polytope.

float osg::ShadowVolumeOccluder::getVolume ( ) const
inline

get the volume of the occluder minus its holes, in eye coords, the volume is normalized by dividing by the volume of the view frustum in eye coords.

Referenced by operator<().

bool osg::ShadowVolumeOccluder::matchProjectionMatrix ( const osg::Matrix matrix) const
inline

return true if the matrix passed in matches the projection matrix that this ShadowVolumeOccluder is associated with.

bool osg::ShadowVolumeOccluder::operator< ( const ShadowVolumeOccluder svo) const
inline

References getVolume().

void osg::ShadowVolumeOccluder::popCurrentMask ( )
inline
void osg::ShadowVolumeOccluder::pushCurrentMask ( )
inline
void osg::ShadowVolumeOccluder::setNodePath ( NodePath nodePath)
inline

Set the NodePath which describes which node in the scene graph that this occluder is attached to.

void osg::ShadowVolumeOccluder::transformProvidingInverse ( const osg::Matrix matrix)
inline

Member Data Documentation

HoleList osg::ShadowVolumeOccluder::_holeList
protected
NodePath osg::ShadowVolumeOccluder::_nodePath
protected
Polytope osg::ShadowVolumeOccluder::_occluderVolume
protected
ref_ptr<const RefMatrix> osg::ShadowVolumeOccluder::_projectionMatrix
protected
float osg::ShadowVolumeOccluder::_volume
protected

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