Class representing the surface geometry a volumetric object. More...

#include <FFaBody.H>

Collaboration diagram for FFaBody:

Public Member Functions
	FFaBody ()
	Default constructor. More...

size_t	getNoVertices () const
	Returns the total number of vertices in the body. More...

size_t	getNoFaces () const
	Returns the total number of faces in the body. More...

bool	computeBoundingBox (FaVec3 &minX, FaVec3 &maxX) const
	Computes the bounding box of the body. More...

bool	computeTotalVolume (double &Vb, FaVec3 &C0b, FFaTensor3 *Ib=NULL) const
	Computes the total volume and volume centroid of the body. More...

bool	computeVolumeBelow (double &Vb, double &As, FaVec3 &C0b, FaVec3 &C0s, const FaVec3 &normal, double z0, double zeroTol=1.0e-16)
	Computes the volume of a body portion below of given plane. More...

bool	saveIntersection (const FaMat34 &cs)
	Saves current plane intersection. More...

bool	computeIncArea (double &dAs, FaVec3 &C0s, const FaVec3 &normal, const FaMat34 &cs)
	Computes the intersection area increment. More...

size_t	addFace (int v1, int v2, int v3, int v4=-1)
	Adds a face to the body definition. More...

size_t	addVertex (const FaVec3 &pos, double tol=-1.0)
	Adds a vertex to the body definition. More...

const FaVec3 &	getVertex (size_t idx) const
	Returns the coordinates of a specified vertex. More...

int	getFaceVtx (size_t idx, int i) const
	Returns the global index of a face vertex. More...

bool	writeCAD (const std::string &fileName, const FaMat34 &partCS) const
	Exports the body to specified CAD file. More...

Static Public Member Functions
static FFaBody *	readFromCAD (std::istream &in, double duplTol=-1.0)
	Creates a new body by parsing the given input stream. More...

Static Public Attributes
static std::string	prefix
	File prefix to use for included files. More...

Static Protected Member Functions
static FFaBody *	readSTL (std::istream &in, double duplTol)
	Creates a new body by parsing STL content from an input stream. More...

static FFaBody *	readCAD (std::istream &in)
	Creates a new body by parsing CAD content from an input stream. More...

static FFaBody *	readWRL (std::istream &in, int version)
	Creates a new body by parsing VRML content from an input stream. More...

Private Attributes
bool	isBBoxComputed
	If true, myBBox is defined. More...

FaVec3	myBBox [2]
	Bounding box of the body. More...

std::vector< FaVec3 >	myVertices
	Vertex container of the body. More...

std::vector< FaFace >	myFaces
	Face container of the body. More...

FaVec3	myX0s
	Centroid of the plane intersection. More...

std::vector< FaVec3 >	myLoopVer
	Vertices defining the intersection. More...

std::vector< FaEdge >	myIntLoop
	Edges of the intersection surface. More...

char	isVolumeComputed
	If true, myVolume is computed. More...

double	myVolume
	The volume of this body. More...

FFaTensor3	myInertia
	The volume intertia of this body. More...

FaVec3	myCentroid
	The volume centroid of this body. More...

size_t	startVx
	Number of vertices before intersected. More...

Detailed Description

Class representing the surface geometry a volumetric object.

This class is used to represent the geometry of Generic Parts in Fedem, and is equipped with methods for calculating the intersection between the geometry and a plane. This can be used for buoyancy calculation of partly submerged rigid objects.

Constructor & Destructor Documentation

◆ FFaBody()

FFaBody::FFaBody ( )

inline

Default constructor.

Member Function Documentation

◆ addFace()

size_t FFaBody::addFace	(	int	v1,
		int	v2,
		int	v3,
		int	v4 = `-1`
	)

Adds a face to the body definition.

◆ addVertex()

size_t FFaBody::addVertex	(	const FaVec3 &	pos,
		double	tol = `-1.0`
	)

Adds a vertex to the body definition.

◆ computeBoundingBox()

bool FFaBody::computeBoundingBox	(	FaVec3 &	minX,
		FaVec3 &	maxX
	)		const

Computes the bounding box of the body.

◆ computeIncArea()

bool FFaBody::computeIncArea	(	double &	dAs,
		FaVec3 &	C0s,
		const FaVec3 &	normal,
		const FaMat34 &	cs
	)

Computes the intersection area increment.

This method computes the increment in the intersection area and the associated centroid, assuming that computeVolumeBelow() already has been invoked such that the current face intersections are available.

◆ computeTotalVolume()

bool FFaBody::computeTotalVolume	(	double &	Vb,
		FaVec3 &	C0b,
		FFaTensor3 *	Ib = `NULL`
	)		const

Computes the total volume and volume centroid of the body.

Optionally the volume inertia is also computed.

◆ computeVolumeBelow()

bool FFaBody::computeVolumeBelow	(	double &	Vb,
		double &	As,
		FaVec3 &	C0b,
		FaVec3 &	C0s,
		const FaVec3 &	normal,
		double	z0,
		double	zeroTol = `1.0e-16`
	)

Computes the volume of a body portion below of given plane.

This method computes the volume and centroid of the portion of the body that is below the plane defined by normal and z0. The area of the intersection surface and the associated centroid is also computed, if the body is intersected by the plane.

◆ getFaceVtx()

int FFaBody::getFaceVtx	(	size_t	idx,
		int	i
	)		const

inline

Returns the global index of a face vertex.

◆ getNoFaces()

size_t FFaBody::getNoFaces ( ) const

inline

Returns the total number of faces in the body.

◆ getNoVertices()

size_t FFaBody::getNoVertices ( ) const

inline

Returns the total number of vertices in the body.

◆ getVertex()

const FaVec3& FFaBody::getVertex ( size_t idx ) const

inline

Returns the coordinates of a specified vertex.

◆ readCAD()

FFaBody * FFaBody::readCAD ( std::istream & in )

staticprotected

Creates a new body by parsing CAD content from an input stream.

◆ readFromCAD()

FFaBody * FFaBody::readFromCAD	(	std::istream &	in,
		double	duplTol = `-1.0`
	)

static

Creates a new body by parsing the given input stream.

This method administers the input of a body definition from a file. The body may either be defined on Fedem's internal CAD format (.fcd), or on the external VRML or STL formats.

◆ readSTL()

FFaBody * FFaBody::readSTL	(	std::istream &	in,
		double	duplTol
	)

staticprotected

Creates a new body by parsing STL content from an input stream.

◆ readWRL()

FFaBody * FFaBody::readWRL	(	std::istream &	in,
		int	version
	)

staticprotected

Creates a new body by parsing VRML content from an input stream.

◆ saveIntersection()

bool FFaBody::saveIntersection ( const FaMat34 & cs )

Saves current plane intersection.

This method saves the loop of vertices defining the current intersection. The vertex coordinates of the loop are transformed to global coordinates using cs to facilitate comparison with a previous configuration.

◆ writeCAD()

bool FFaBody::writeCAD	(	const std::string &	fileName,
		const FaMat34 &	partCS
	)		const

std::string FFaBody::prefix

static

File prefix to use for included files.

◆ startVx

size_t FFaBody::startVx

private

Number of vertices before intersected.

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

fedem-foundation/src/FFaLib/FFaAlgebra/FFaBody.H
fedem-foundation/src/FFaLib/FFaAlgebra/FFaBody.C
fedem-foundation/src/FFaLib/FFaAlgebra/FFaBodyParser.C

Public Member Functions

Static Public Member Functions

Static Public Attributes

Static Protected Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ FFaBody()

Member Function Documentation

◆ addFace()

◆ addVertex()

◆ computeBoundingBox()

◆ computeIncArea()

◆ computeTotalVolume()

◆ computeVolumeBelow()

◆ getFaceVtx()

◆ getNoFaces()

◆ getNoVertices()

◆ getVertex()

◆ readCAD()

◆ readFromCAD()

◆ readSTL()

◆ readWRL()

◆ saveIntersection()

◆ writeCAD()

Member Data Documentation

◆ isBBoxComputed

◆ isVolumeComputed

◆ myBBox

◆ myCentroid

◆ myFaces

◆ myInertia

◆ myIntLoop

◆ myLoopVer

◆ myVertices

◆ myVolume

◆ myX0s

◆ prefix

◆ startVx