BRepGProp_MeshCinert Class Reference

Computes the global properties of of polylines represented by set of points. This class is used for computation of global properties of edge, which has no exact geometry (3d or 2d curve), but has any of allowed polygons. More...

#include <BRepGProp_MeshCinert.hxx>

Inheritance diagram for BRepGProp_MeshCinert:

Public Member Functions
	BRepGProp_MeshCinert ()
void	SetLocation (const gp_Pnt &CLocation)
void	Perform (const TColgp_Array1OfPnt &theNodes)
	Computes the global properties of of polylines represented by set of points.
Public Member Functions inherited from GProp_GProps
	GProp_GProps ()
	The origin (0, 0, 0) of the absolute cartesian coordinate system is used to compute the global properties.
	GProp_GProps (const gp_Pnt &SystemLocation)
	The point SystemLocation is used to compute the global properties of the system. For more accuracy it is better to define this point closed to the location of the system. For example it could be a point around the centre of mass of the system. This point is referred to as the reference point for this framework. For greater accuracy it is better for the reference point to be close to the location of the system. It can, for example, be a point near the center of mass of the system. At initialization, the framework is empty; i.e. it retains no dimensional information such as mass, or inertia. However, it is now able to bring together global properties of various other systems, whose global properties have already been computed using another framework. To do this, use the function Add to define the components of the system. Use it once per component of the system, and then use the interrogation functions available to access the computed values.
void	Add (const GProp_GProps &Item, const Standard_Real Density=1.0)
	Either.
Standard_Real	Mass () const
	Returns the mass of the current system. If no density is attached to the components of the current system the returned value corresponds to :
gp_Pnt	CentreOfMass () const
	Returns the center of mass of the current system. If the gravitational field is uniform, it is the center of gravity. The coordinates returned for the center of mass are expressed in the absolute Cartesian coordinate system.
gp_Mat	MatrixOfInertia () const
	returns the matrix of inertia. It is a symmetrical matrix. The coefficients of the matrix are the quadratic moments of inertia.
void	StaticMoments (Standard_Real &Ix, Standard_Real &Iy, Standard_Real &Iz) const
	Returns Ix, Iy, Iz, the static moments of inertia of the current system; i.e. the moments of inertia about the three axes of the Cartesian coordinate system.
Standard_Real	MomentOfInertia (const gp_Ax1 &A) const
	computes the moment of inertia of the material system about the axis A.
GProp_PrincipalProps	PrincipalProperties () const
	Computes the principal properties of inertia of the current system. There is always a set of axes for which the products of inertia of a geometric system are equal to 0; i.e. the matrix of inertia of the system is diagonal. These axes are the principal axes of inertia. Their origin is coincident with the center of mass of the system. The associated moments are called the principal moments of inertia. This function computes the eigen values and the eigen vectors of the matrix of inertia of the system. Results are stored by using a presentation framework of principal properties of inertia (GProp_PrincipalProps object) which may be queried to access the value sought.
Standard_Real	RadiusOfGyration (const gp_Ax1 &A) const
	Returns the radius of gyration of the current system about the axis A.

Static Public Member Functions
static void	PreparePolygon (const TopoDS_Edge &theE, Handle< TColgp_HArray1OfPnt > &thePolyg)
	Prepare set of 3d points on base of any available edge polygons: 3D polygon, polygon on triangulation, 2d polygon on surface If edge has no polygons, array thePolyg is left unchanged.

Additional Inherited Members
Protected Attributes inherited from GProp_GProps
gp_Pnt	g
gp_Pnt	loc
Standard_Real	dim
gp_Mat	inertia

Detailed Description

Computes the global properties of of polylines represented by set of points. This class is used for computation of global properties of edge, which has no exact geometry (3d or 2d curve), but has any of allowed polygons.

Constructor & Destructor Documentation

BRepGProp_MeshCinert()

BRepGProp_MeshCinert::BRepGProp_MeshCinert

(

)

Member Function Documentation

Perform()

void BRepGProp_MeshCinert::Perform

(

const TColgp_Array1OfPnt &

theNodes

)

Computes the global properties of of polylines represented by set of points.

PreparePolygon()

static void BRepGProp_MeshCinert::PreparePolygon ( const TopoDS_Edge & theE, Handle< TColgp_HArray1OfPnt > & thePolyg )

static

Prepare set of 3d points on base of any available edge polygons: 3D polygon, polygon on triangulation, 2d polygon on surface If edge has no polygons, array thePolyg is left unchanged.

SetLocation()

void BRepGProp_MeshCinert::SetLocation

(

const gp_Pnt &

CLocation

)

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

• BRepGProp_MeshCinert.hxx