makVrv::DtOsgEarthBoundary Class Reference

DtOsgEarthBoundary.

This class is the same as osgEarth::BoundaryUtil. It's used to generate a boundary of a osg::Node.

Classes
class	VertexCollectionVisitor

Public Member Functions
	DtOsgEarthBoundary ()

Static Public Member Functions
static void	setTolerance (double meters)
static double	getTolerance ()
static osg::Vec3dArray *	getBoundary (osg::Node *modelNode, bool geocentric=true, bool convexHull=false)
static osg::Vec3dArray *	findHull (osg::Vec3dArray &points)
static osg::Vec3dArray *	findMeshBoundary (osg::Node *modelNode, bool geocentric=true)

Static Protected Member Functions
static osg::Vec3dArray *	hullPresortPoints (osg::Vec3dArray &points)
static float	isLeft (osg::Vec3d P0, osg::Vec3d P1, osg::Vec3d P2)

Static Protected Attributes
static double	myTolerance

Private Member Functions
	DtOsgEarthBoundary (const DtOsgEarthBoundary &)
DtOsgEarthBoundary &	operator= (const DtOsgEarthBoundary &)

Constructor & Destructor Documentation

makVrv::DtOsgEarthBoundary::DtOsgEarthBoundary

(

)

The default constructor.

makVrv::DtOsgEarthBoundary::DtOsgEarthBoundary ( const DtOsgEarthBoundary &  )

private

Copy Constructor not implemented – Copy not allowed.

Member Function Documentation

static void makVrv::DtOsgEarthBoundary::setTolerance ( double  meters )

static

Sets the tolerance when combining close verts. Default = 0.01.

static double makVrv::DtOsgEarthBoundary::getTolerance ( )

inlinestatic

Gets the tolerance when combining close verts. Default = 0.01.

static osg::Vec3dArray* makVrv::DtOsgEarthBoundary::getBoundary ( osg::Node *  modelNode, bool  geocentric = true, bool  convexHull = false  )

static

Use the vertices of the given node to calculate a boundary via the findHull() method.

static osg::Vec3dArray* makVrv::DtOsgEarthBoundary::findHull ( osg::Vec3dArray &  points )

static

Finds the convex hull for the given points using the Andrew's monotone chain algorithm. Returns an ordered set of points defining the hull.

static osg::Vec3dArray* makVrv::DtOsgEarthBoundary::findMeshBoundary ( osg::Node *  modelNode, bool  geocentric = true  )

static

Finds the boundary of the mesh.

Parameters

modelNode	The node of the model.
geocentric	If the model is in geocentric coordinate.

static osg::Vec3dArray* makVrv::DtOsgEarthBoundary::hullPresortPoints ( osg::Vec3dArray &  points )

staticprotected

Returns an array containing the points sorted first by x and then by y.

static float makVrv::DtOsgEarthBoundary::isLeft ( osg::Vec3d  P0, osg::Vec3d  P1, osg::Vec3d  P2  )

inlinestaticprotected

Tests if a point is Left|On|Right of an infinite line Returns: >0 for P2 left of the line through P0 and P1 0 for P2 on the line <0 for P2 right of the line.

Implementation based on method from softSurfer (www.softsurfer.com)

DtOsgEarthBoundary& makVrv::DtOsgEarthBoundary::operator= ( const DtOsgEarthBoundary &  )

private

Assignment Operator not implemented – Copy not allowed.

Member Data Documentation

double makVrv::DtOsgEarthBoundary::myTolerance

staticprotected

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

• /data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-0-branch/include/vrvOsgEarth/DtOsgEarthBoundary.h