Part::Geom2dBSplineCurve Class Reference

#include <Geometry2d.h>

Public Member Functions
virtual Geometry2d *	clone (void) const
	returns a cloned object More...
int	countPoles () const
	Geom2dBSplineCurve ()
	Geom2dBSplineCurve (const Handle(Geom2d_BSplineCurve)&)
void	getCardinalSplineTangents (const std::vector< gp_Pnt2d > &, const std::vector< double > &, std::vector< gp_Vec2d > &) const
void	getCardinalSplineTangents (const std::vector< gp_Pnt2d > &, double, std::vector< gp_Vec2d > &) const
virtual unsigned int	getMemSize (void) const
	This method is used to get the size of objects It is not meant to have the exact size, it is more or less an estimation which runs fast! Is it two bytes or a GB? More...
std::vector< Base::Vector2d >	getPoles () const
virtual PyObject *	getPyObject (void)
	This method returns the Python wrapper for a C++ object. More...
const	Handle (Geom2d_Geometry) &handle() const
void	interpolate (const std::vector< gp_Pnt2d > &, const std::vector< gp_Vec2d > &)
bool	join (const Handle(Geom2d_BSplineCurve)&)
void	makeC1Continuous (double)
virtual void	Restore (Base::XMLReader &)
	This method is used to restore properties from an XML document. More...
virtual void	Save (Base::Writer &) const
	This method is used to save properties to an XML document. More...
void	setHandle (const Handle(Geom2d_BSplineCurve)&)
void	setPole (int index, const Base::Vector2d &, double weight=-1)
std::list< Geometry2d * >	toBiArcs (double tolerance) const
virtual	~Geom2dBSplineCurve ()
Public Member Functions inherited from Part::Geom2dCurve
bool	closestParameter (const Base::Vector2d &point, double &u) const
bool	closestParameterToBasicCurve (const Base::Vector2d &point, double &u) const
Base::Vector2d	firstDerivativeAtParameter (double u) const
	Geom2dCurve ()
bool	normal (double u, gp_Dir2d &dir) const
Base::Vector2d	pointAtParameter (double u) const
Base::Vector2d	secondDerivativeAtParameter (double u) const
bool	tangent (double u, gp_Dir2d &) const
virtual TopoDS_Shape	toShape () const
virtual	~Geom2dCurve ()
Public Member Functions inherited from Part::Geometry2d
virtual	~Geometry2d ()
Public Member Functions inherited from Base::Persistence
void	dumpToStream (std::ostream &stream, int compression)
virtual Base::Type	getTypeId (void) const
virtual void	RestoreDocFile (Reader &)
	This method is used to restore large amounts of data from a file In this method you simply stream in your SaveDocFile() saved data. More...
void	restoreFromStream (std::istream &stream)
virtual void	SaveDocFile (Writer &) const
	This method is used to save large amounts of data to a binary file. More...
Public Member Functions inherited from Base::BaseClass
	BaseClass ()
	Construction. More...
bool	isDerivedFrom (const Type type) const
virtual void	setPyObject (PyObject *)
virtual	~BaseClass ()
	Destruction. More...

Additional Inherited Members
Static Public Member Functions inherited from Base::Persistence
static void *	create (void)
static std::string	encodeAttribute (const std::string &)
	Encodes an attribute upon saving. More...
static Base::Type	getClassTypeId (void)
static void	init (void)
Static Public Member Functions inherited from Base::BaseClass
static void *	create (void)
static Type	getClassTypeId (void)
static void	init (void)
Protected Member Functions inherited from Part::Geometry2d
	Geometry2d ()
Static Protected Member Functions inherited from Base::BaseClass
static void	initSubclass (Base::Type &toInit, const char *ClassName, const char *ParentName, Type::instantiationMethod method=nullptr)

Constructor & Destructor Documentation

Geom2dBSplineCurve() [1/2]

Geom2dBSplineCurve::Geom2dBSplineCurve

(

)

Geom2dBSplineCurve() [2/2]

Geom2dBSplineCurve::Geom2dBSplineCurve

(

const Handle(Geom2d_BSplineCurve)&

b

)

~Geom2dBSplineCurve()

Geom2dBSplineCurve::~Geom2dBSplineCurve ( )

virtual

Member Function Documentation

clone()

virtual Geometry2d* Part::Geom2dBSplineCurve::clone ( void  ) const

virtual

returns a cloned object

Implements Part::Geometry2d.

Referenced by ArchPanel.CommandPanelSheet::Activated(), and Mod.PartDesign.WizardShaft.SegmentFunction.SegmentFunction::integrated().

countPoles()

int Part::Geom2dBSplineCurve::countPoles

(

)

const

getCardinalSplineTangents() [1/2]

void Geom2dBSplineCurve::getCardinalSplineTangents	(	const std::vector< gp_Pnt2d > &	p,
		const std::vector< double > &	c,
		std::vector< gp_Vec2d > &	t
	)		const

Compute the tangents for a Cardinal spline using the the cubic Hermite spline. It uses the method for Cardinal splines.

getCardinalSplineTangents() [2/2]

void Geom2dBSplineCurve::getCardinalSplineTangents	(	const std::vector< gp_Pnt2d > &	p,
		double	c,
		std::vector< gp_Vec2d > &	t
	)		const

Compute the tangents for a Cardinal spline using the the cubic Hermite spline. It uses the method for Cardinal splines. It uses the same parameter for each tangent.

getMemSize()

unsigned int Geom2dBSplineCurve::getMemSize ( void  ) const

virtual

This method is used to get the size of objects It is not meant to have the exact size, it is more or less an estimation which runs fast! Is it two bytes or a GB?

Reimplemented from Part::Geometry2d.

getPoles()

std::vector< Base::Vector2d > Geom2dBSplineCurve::getPoles

(

)

const

getPyObject()

PyObject * Geom2dBSplineCurve::getPyObject ( void  )

virtual

This method returns the Python wrapper for a C++ object.

It's in the responsibility of the programmer to do the correct reference counting. Basically there are two ways how to implement that: Either always return a new Python object then reference counting is not a matter or return always the same Python object then the reference counter must be incremented by one. However, it's absolutely forbidden to return always the same Python object without incrementing the reference counter.

The default implementation returns 'None'.

Reimplemented from Base::BaseClass.

Handle()

const Part::Geom2dBSplineCurve::Handle ( Geom2d_Geometry  ) const &

virtual

Implements Part::Geometry2d.

interpolate()

void Geom2dBSplineCurve::interpolate	(	const std::vector< gp_Pnt2d > &	p,
		const std::vector< gp_Vec2d > &	t
	)

Set the poles and tangents for the cubic Hermite spline

join()

bool Geom2dBSplineCurve::join

(

const Handle(Geom2d_BSplineCurve)&

spline

)

Referenced by Part::BSplineCurve2dPy::join().

makeC1Continuous()

void Geom2dBSplineCurve::makeC1Continuous

(

double

tol

)

Referenced by Part::BSplineCurve2dPy::makeC1Continuous().

Restore()

void Geom2dBSplineCurve::Restore ( Base::XMLReader &  )

virtual

This method is used to restore properties from an XML document.

It uses the XMLReader class, which bases on SAX, to read the in Save() written information. Again the Vector as an example:

void PropertyVector::Restore(Base::XMLReader &reader)
{
  // read my Element
  reader.readElement("PropertyVector");
  // get the value of my Attribute
  _cVec.x = reader.getAttributeAsFloat("valueX");
  _cVec.y = reader.getAttributeAsFloat("valueY");
  _cVec.z = reader.getAttributeAsFloat("valueZ");
}

Reimplemented from Part::Geometry2d.

Save()

void Geom2dBSplineCurve::Save ( Base::Writer &  ) const

virtual

This method is used to save properties to an XML document.

A good example you'll find in PropertyStandard.cpp, e.g. the vector:

void PropertyVector::Save (Writer &writer) const
{
   writer << writer.ind() << "<PropertyVector valueX=\"" <<  _cVec.x <<
                                          "\" valueY=\"" <<  _cVec.y <<
                                          "\" valueZ=\"" <<  _cVec.z <<"\"/>" << endl;
}

The writer.ind() expression writes the indentation, just for pretty printing of the XML. As you see, the writing of the XML document is not done with a DOM implementation because of performance reasons. Therefore the programmer has to take care that a valid XML document is written. This means closing tags and writing UTF-8.

See also

Base::Writer

Reimplemented from Part::Geometry2d.

setHandle()

void Geom2dBSplineCurve::setHandle

(

const Handle(Geom2d_BSplineCurve)&

c

)

Referenced by Part::BSplineCurve2dPy::approximate(), Part::BSplineCurve2dPy::buildFromPoles(), Part::BSplineCurve2dPy::buildFromPolesMultsKnots(), Part::Geom2dTrimmedCurve::getPyObject(), and Part::BSplineCurve2dPy::interpolate().

setPole()

void Part::Geom2dBSplineCurve::setPole	(	int	index,
		const Base::Vector2d &	,
		double	weight = -1
	)

toBiArcs()

std::list< Geometry2d * > Geom2dBSplineCurve::toBiArcs

(

double

tolerance

)

const

Referenced by Part::BSplineCurve2dPy::toBiArcs().

---

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

• src/Mod/Part/App/Geometry2d.h
• src/Mod/Part/App/Geometry2d.cpp