osg::DVRVertex Class Reference

A single Vertex of the triangled clip geometry.

#include <OSGDVRVertex.h>

List of all members.

Public Member Functions
	DVRVertex (void)
	Construct a new vertex.
	DVRVertex (const DVRVertex &vertex)
	Copy.
	~DVRVertex (void)
	Destructor.
void	calculatePlaneDistance (const Plane &plane)
	calculates the distance of the vertex to a reference plane.
void	calculatePlaneDistanceTransformed (const Plane &plane)
	calculates the distance of the vertex to a reference plane.
void	calculatePlaneDistance (const Plane &plane, const Matrix &transform)
	calculates the distance of the vertex to a reference plane.
bool	isBehindPlane (float dist2RefPlane, bool &switched)
bool	isBehindPlane (float dist2RefPlane)
	returns true, iff dist2RefPlane ist bigger than this->refPlaneDistance
bool	isCloser (float distance)
void	dump (void) const
	Usefull for debugging.
Public Attributes
Pnt3f	pos
	The vertex index in the parent geometry.
std::vector< Int32 >	adjacentTriangles
	The adjacent triangles of this vertex.
bool	behindPlane
Real32	refPlaneDistance
Pnt3f	transformedPos
	The position of this vertex in volume coords.

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Detailed Description

Definition at line 13 of file OSGDVRVertex.h.

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Constructor & Destructor Documentation

DVRVertex::DVRVertex

(

void

)

Definition at line 8 of file OSGDVRVertex.cpp.

References behindPlane, pos, refPlaneDistance, and transformedPos.

{
    pos              = Pnt3f(0.0, 0.0, 0.0);
    transformedPos   = pos;
    behindPlane      = false;
    refPlaneDistance = 0.0; 
}

DVRVertex::DVRVertex

(

const DVRVertex &

vertex

)

Definition at line 16 of file OSGDVRVertex.cpp.

References adjacentTriangles, behindPlane, pos, refPlaneDistance, and transformedPos.

{
    pos               = vertex.pos;
    transformedPos    = vertex.transformedPos;
    adjacentTriangles = vertex.adjacentTriangles;
    behindPlane       = vertex.behindPlane;
    refPlaneDistance  = vertex.refPlaneDistance; 
}

DVRVertex::~DVRVertex

(

void

)

Definition at line 25 of file OSGDVRVertex.cpp.

{
}

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Member Function Documentation

void DVRVertex::calculatePlaneDistance

(

const Plane &

plane

)

uses the vertex position

Definition at line 29 of file OSGDVRVertex.cpp.

References osg::Plane::distance(), pos, and refPlaneDistance.

{
    // calculate distance to the reference plane
    refPlaneDistance = plane.distance(pos);
}

void DVRVertex::calculatePlaneDistanceTransformed

(

const Plane &

plane

)

uses the transformed vertex position

Definition at line 35 of file OSGDVRVertex.cpp.

References osg::Plane::distance(), refPlaneDistance, and transformedPos.

{
    // calculate distance to the reference plane
    refPlaneDistance = plane.distance(transformedPos);
}

void DVRVertex::calculatePlaneDistance	(	const Plane &	plane,
		const Matrix &	transform
	)

uses the vertex position transformed with 'transform'

Definition at line 41 of file OSGDVRVertex.cpp.

References osg::Plane::distance(), osg::TransformationMatrix< ValueTypeT >::multPntFullMatrix(), pos, and refPlaneDistance.

{
    Pnt3f transPos;
    transform.multPntFullMatrix(pos, transPos);
    
    // calculate distance to the reference plane
    refPlaneDistance = plane.distance(transPos);
}

bool DVRVertex::isBehindPlane	(	float	dist2RefPlane,
		bool &	switched
	)

returns true, iff dist2RefPlane ist bigger than this->refPlaneDistance switched will be set, if the vertex was till yet in front of each of the tested planes

Definition at line 51 of file OSGDVRVertex.cpp.

References behindPlane, and refPlaneDistance.

Referenced by osg::DVRClipGeometry::updateActiveTriangles().

{
    switched = false;

    if(dist2RefPlane > refPlaneDistance)
    {
        if(!behindPlane)
            switched = true;

        behindPlane = true;

        return true;
    }

    return false;
}

bool DVRVertex::isBehindPlane

(

float

dist2RefPlane

)

Definition at line 68 of file OSGDVRVertex.cpp.

References refPlaneDistance.

{
    return (dist2RefPlane > refPlaneDistance);
}

bool DVRVertex::isCloser

(

float

distance

)

Returns true, if the vertex is closer to the ref plane than (distance). If not, the notMinimumValue flag is set to true.

One of the calculatePlaneDistance(..) functions has to be called before!

Definition at line 74 of file OSGDVRVertex.cpp.

References refPlaneDistance.

{
    if(distance < refPlaneDistance)
    {
        return false;
    }

    if(distance == refPlaneDistance)
        return false;

    return true;
}

void DVRVertex::dump

(

void

)

const

Definition at line 88 of file OSGDVRVertex.cpp.

References adjacentTriangles, pos, and transformedPos.

{
    std::cerr << "Pos=("
              << pos 
              << ") transformedPos=("
              << transformedPos 
              << ") Adj. Tris: ";

    for(UInt32 i = 0; i < adjacentTriangles.size(); i++)
    {
        std::cerr << adjacentTriangles[i] << " ";
    }
    std::cerr << std::endl;
}

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Member Data Documentation

Pnt3f osg::DVRVertex::pos

Definition at line 67 of file OSGDVRVertex.h.

Referenced by calculatePlaneDistance(), dump(), DVRVertex(), and osg::DVRClipGeometry::insertVertex().

std::vector<Int32> osg::DVRVertex::adjacentTriangles

Definition at line 70 of file OSGDVRVertex.h.

Referenced by osg::DVRClipGeometry::addNewActiveTriangles(), osg::DVRClipGeometry::buildTriangledGeometry(), dump(), DVRVertex(), and osg::DVRClipGeometry::isLocalMinimum().

bool osg::DVRVertex::behindPlane

Definition at line 75 of file OSGDVRVertex.h.

Referenced by DVRVertex(), isBehindPlane(), and osg::DVRClipGeometry::resetLocalData().

Real32 osg::DVRVertex::refPlaneDistance

Definition at line 81 of file OSGDVRVertex.h.

Referenced by calculatePlaneDistance(), calculatePlaneDistanceTransformed(), DVRVertex(), isBehindPlane(), isCloser(), and osg::DVRClipGeometry::isLocalMinimum().

Pnt3f osg::DVRVertex::transformedPos

Definition at line 84 of file OSGDVRVertex.h.

Referenced by calculatePlaneDistanceTransformed(), dump(), and DVRVertex().

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

• OSGDVRVertex.h
• OSGDVRVertex.cpp