osgEarth::CullNodeByHorizon Struct Reference

List of all members.

Public Member Functions
	CullNodeByHorizon (const osg::Vec3d &world, const osg::EllipsoidModel *model)
void	operator() (osg::Node *node, osg::NodeVisitor *nv)
Public Attributes
osg::Vec3d	_world
double	_r2

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Detailed Description

Definition at line 197 of file Utils.

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Constructor & Destructor Documentation

CullNodeByHorizon::CullNodeByHorizon	(	const osg::Vec3d &	world,
		const osg::EllipsoidModel *	model
	)

Definition at line 38 of file Utils.cpp.

                                                                                            :
_world(world),
_r2(model->getRadiusPolar() * model->getRadiusPolar())
{
    //nop
}

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Member Function Documentation

void CullNodeByHorizon::operator()	(	osg::Node *	node,
		osg::NodeVisitor *	nv
	)

Definition at line 46 of file Utils.cpp.

{
    if ( nv )
    {
        osg::Vec3d eye, center, up;
        osgUtil::CullVisitor* cv = static_cast<osgUtil::CullVisitor*>( nv );
        cv->getCurrentCamera()->getViewMatrixAsLookAt(eye,center,up);

        double d2 = eye.length2();
        double horiz2 = d2 - _r2;

        double dist2 = (_world-eye).length2();

        if ( dist2 < horiz2 )
        {
            traverse(node, nv);
        }
    }
}

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Member Data Documentation

double osgEarth::CullNodeByHorizon::_r2

Definition at line 199 of file Utils.

osg::Vec3d osgEarth::CullNodeByHorizon::_world

Definition at line 198 of file Utils.

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

• /home/cube/sources/osgearth/src/osgEarth/Utils
• /home/cube/sources/osgearth/src/osgEarth/Utils.cpp