makVrv::DtOsgNodeXRScaler Class Reference

The DtOsgNodeXRScaler class provides default strategy for implementing XR scaling. More...

Inheritance diagram for makVrv::DtOsgNodeXRScaler:

Public Member Functions
	DtOsgNodeXRScaler (DtDe &de, DtScalingAlgorithm *scalingAlgorithm)
	CTOR.
virtual double	calculateXRScale (const DtOsgCullVisitorParameters &info, const osg::Camera &camera, const osg::Vec3d &position, double modelRadius, DtUniqueID objectElementId)
	Calculate the scale factor.
double	calculateXRScale (const DtOsgCullVisitorParameters &info, const osg::Camera &camera, const osg::Node &node)
	Calculate the XR scale factor.

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

Protected Attributes
DtScalingAlgorithm *	myAlgorithm
DtDe &	myDe

Detailed Description

The DtOsgNodeXRScaler class provides default strategy for implementing XR scaling.

Constructor & Destructor Documentation

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

CTOR.

Takes ownership of its scaling algorithm object

virtual makVrv::DtOsgNodeXRScaler::~DtOsgNodeXRScaler ( )

protectedvirtual

DTOR - Called from osg::Referenced.

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

Member Function Documentation

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

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 XR 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

Referenced by makVrv::DtOsgCullVisitorParameters::calculateXRScale().

double makVrv::DtOsgNodeXRScaler::calculateXRScale	(	const DtOsgCullVisitorParameters &	info,
		const osg::Camera &	camera,
		const osg::Node &	node
	)

Calculate the XR scale factor.

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

Member Data Documentation

DtScalingAlgorithm* makVrv::DtOsgNodeXRScaler::myAlgorithm

protected

DtDe& makVrv::DtOsgNodeXRScaler::myDe

protected

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

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vrvOsg/DtOsgNodeXRScaler.h