makVrv::DtModelScaler Class Reference

The DtModelScaler prepares the data from the osg camera, osg node, and cull visitor parameters and then passes it to the DtScalingAlgorithm provided to the model scaler. More...

Inheritance diagram for makVrv::DtModelScaler:

Public Member Functions
	DtModelScaler (DtDe &de, DtScalingAlgorithm *scalingAlgorithm)
	CTOR. More...
virtual double	calculateScale (const DtOsgCullVisitorParameters &info, const osg::Camera &camera, const osg::Vec3d &position, double modelRadius, DtUniqueID objectElementId) const
	Calculate the scale factor. More...
double	calculateScale (const DtOsgCullVisitorParameters &info, const osg::Camera &camera, const osg::Node &node) const
	Calculate the scale factor. More...
const DtScalingAlgorithm &	scalingAlgorithm () const
	Accessor for this model scaler's scaling algorithm. More...

Protected Member Functions
virtual	~DtModelScaler ()
	DTOR - Called from osg::Referenced. More...

Protected Attributes
DtScalingAlgorithm *	myAlgorithm
DtDe &	myDe

Private Member Functions
	DtModelScaler ()
	DtModelScaler (const DtModelScaler &orig)
DtModelScaler &	operator= (const DtModelScaler &rhs)

Detailed Description

The DtModelScaler prepares the data from the osg camera, osg node, and cull visitor parameters and then passes it to the DtScalingAlgorithm provided to the model scaler.

An instance of this class is created each frame for each DtOsgChannel and given to the DtOsgCullVisitorParameters to make it available to the DtOsgCullVisitor and to the DtInstanceManager

Constructor & Destructor Documentation

makVrv::DtModelScaler::DtModelScaler	(	DtDe &	de,
		DtScalingAlgorithm *	scalingAlgorithm
	)

CTOR.

Create a model scaler with the desired scaling algorithm

virtual makVrv::DtModelScaler::~DtModelScaler ( )

protectedvirtual

DTOR - Called from osg::Referenced.

This is protected to prevent the accidental creation of the scaler on the stack.

makVrv::DtModelScaler::DtModelScaler ( )

private

makVrv::DtModelScaler::DtModelScaler ( const DtModelScaler &  orig )

private

Member Function Documentation

virtual double makVrv::DtModelScaler::calculateScale ( const DtOsgCullVisitorParameters &  info, const osg::Camera &  camera, const osg::Vec3d &  position, double  modelRadius, DtUniqueID  objectElementId  ) const

virtual

Calculate the scale factor.

Override the implementation of this method by registering a custom DtScalingAlgorithm implementation.

Parameters

[in]	info	is the cull visitor parameters object, which contains the current scale factor setting, as well as other potentially useful information for a scaling algorithm.
[in]	camera	is the current cull or intersector camera, from which the eyepoint can be found, as well as the viewport, model view and projection matrices, if desired.
[in]	position	is the position of the object to be scaled
[in]	modelRadius	is the bounding radius of the object to be scaled
[in]	objectElementId	is the element ID of the object being scaled, if it exists - check first for (DtUniqueID)0.

Returns

the amount to scale the object

double makVrv::DtModelScaler::calculateScale	(	const DtOsgCullVisitorParameters &	info,
		const osg::Camera &	camera,
		const osg::Node &	node
	)		const

Calculate the scale factor.

This is the method called by visitors to determine the scale factor. It extracts the position, modelRadius, and elementID (if any) from the osg::Node and then calls the overridable calculateScale with those values.

const DtScalingAlgorithm& makVrv::DtModelScaler::scalingAlgorithm

(

)

const

Accessor for this model scaler's scaling algorithm.

DtModelScaler& makVrv::DtModelScaler::operator= ( const DtModelScaler &  rhs )

private

Member Data Documentation

DtScalingAlgorithm* makVrv::DtModelScaler::myAlgorithm

protected

DtDe& makVrv::DtModelScaler::myDe

protected

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

• /data/exports/nrhent7-1/nightly/docs/vrForces.vrf4-8-branch/include/vrvOsg/DtModelScaler.h