class OSGUTIL_EXPORT osgUtil::RenderVisitor

class OSGUTIL_EXPORT osgUtil::RenderVisitor: public osg::NodeVisitor

Basic NodeVisitor implementation for rendering a scene.

Inheritance:

Public Classes
enum TransparencySortMode
enum CullingType

Public Methods
RenderVisitor()
virtual ~RenderVisitor()
void reset()
virtual void apply(osg::Node&)
virtual void apply(osg::Geode& node)
virtual void apply(osg::Billboard& node)
virtual void apply(osg::LightSource& node)
virtual void apply(osg::Group& node)
virtual void apply(osg::DCS& node)
virtual void apply(osg::Switch& node)
virtual void apply(osg::LOD& node)
virtual void apply(osg::Scene& node)
void setGlobalState(osg::GeoState* global)
void setPerspective(const osg::Camera& camera)
void setPerspective(float fovy, float aspect, float znear, float zfar)
void setLookAt(const osg::Camera& camera)
void setLookAt(const osg::Vec3& eye, const osg::Vec3& center, const osg::Vec3& upVector)
void setLookAt(double eyeX, double eyeY, double eyeZ, double centerX, double centerY, double centerZ, double upX, double upY, double upZ)
void setLODBias(float bias)
float getLODBias()
void setTransparencySortMode(TransparencySortMode tsm)
void setCullingActive(CullingType ct, bool active): Enables/disables the specified culling type.
bool getCullingActive(CullingType ct): Returns the state of the specified culling type.
bool calcNearFar(double& near_plane, double& far_plane): Calculates the near_plane and the far_plane for the current camera view depending on the objects currently stored in the opaque and transparent bins.
void render(): Renders the osg::GeoSets that were collected in the opaque and transparent bins before

Protected Fields
bool _viewFrustumCullingActive
bool _smallFeatureCullingActive
ViewStateStack _viewStateStack
ViewState* _tvs
ViewState* _cvs
OpaqueList _opaqueGeoSets
TransparentList _transparentGeoSets
LightList _lights
osg::GeoState* _globalState
float _LODBias
float _fovy
float _aspect
float _znear
float _zfar
osg::Vec3 _frustumTop
osg::Vec3 _frustumBottom
osg::Vec3 _frustumLeft
osg::Vec3 _frustumRight
TransparencySortMode _tsm

Protected Methods
void pushMatrix(const osg::Matrix& matrix)
void popMatrix()
osg::Matrix* getCurrentMatrix()
osg::Matrix* getInverseCurrentMatrix()
const osg::Vec3& getEyeLocal()
const osg::Vec3& getCenterLocal()
const osg::Vec3& getLookVectorLocal()
bool isCulled(const osg::BoundingSphere& sp)
bool isCulled(const osg::BoundingBox& bb)
void calculateClippingPlanes()

Protected
typedef std::pair<osg::Matrix*,osg::GeoSet*> MatrixGeoSet
typedef std::vector<ViewState*> ViewStateStack
typedef std::multimap<osg::GeoState*,MatrixGeoSet> OpaqueList
typedef std::multimap<float,MatrixGeoSet> TransparentList
typedef std::map<osg::Matrix*,osg::Light*> LightList

Documentation

Basic NodeVisitor implementation for rendering a scene. This visitor traverses the scene graph, collecting transparent and opaque osg::GeoSets into a depth sorted transparent bin and a state sorted opaque bin. The opaque bin is rendered first, and then the transparent bin in rendered in order from the furthest osg::GeoSet from the eye to the one nearest the eye.

RenderVisitor()

virtual ~RenderVisitor()

void reset()

virtual void apply(osg::Node&)

virtual void apply(osg::Geode& node)

virtual void apply(osg::Billboard& node)

virtual void apply(osg::LightSource& node)

virtual void apply(osg::Group& node)

virtual void apply(osg::DCS& node)

virtual void apply(osg::Switch& node)

virtual void apply(osg::LOD& node)

virtual void apply(osg::Scene& node)

void setGlobalState(osg::GeoState* global)

void setPerspective(const osg::Camera& camera)

void setPerspective(float fovy, float aspect, float znear, float zfar)

void setLookAt(const osg::Camera& camera)

void setLookAt(const osg::Vec3& eye, const osg::Vec3& center, const osg::Vec3& upVector)

void setLookAt(double eyeX, double eyeY, double eyeZ, double centerX, double centerY, double centerZ, double upX, double upY, double upZ)

void setLODBias(float bias)

float getLODBias()

enum TransparencySortMode LOOK_VECTOR_DISTANCE OBJECT_EYE_POINT_DISTANCE

void setTransparencySortMode(TransparencySortMode tsm)

enum CullingType VIEW_FRUSTUM_CULLING SMALL_FEATURE_CULLING

void setCullingActive(CullingType ct, bool active)

Enables/disables the specified culling type.


Parameters:: ct - The culling type to enable/disable.
active - true enables the culling type, false disables.

bool getCullingActive(CullingType ct)

Returns the state of the specified culling type. @result true, if culling type is enabled, false otherwise.

bool calcNearFar(double& near_plane, double& far_plane)

Calculates the near_plane and the far_plane for the current camera view depending on the objects currently stored in the opaque and transparent bins.


Parameters:: near_plane - reference to a variable that can store the near plane result.
far_plane - reference to a variable that can store the far plane result. @result true, if near_plane and far_plane contain valid values, false otherwise.

void render()