Part::GeomBSplineCurve Class Reference

#include <Geometry.h>

Public Member Functions

bool approximate (double tol3d, int maxSegments, int maxDegree, int continuity)
 GeomBSplineCurve::approximate. More...
 
virtual Geometrycopy (void) const
 returns a copy of this object having a new randomly generated tag. More...
 
int countKnots () const
 
int countPoles () const
 
 GeomBSplineCurve ()
 
 GeomBSplineCurve (const Handle(Geom_BSplineCurve)&)
 
 GeomBSplineCurve (const std::vector< Base::Vector3d > &poles, const std::vector< double > &weights, const std::vector< double > &knots, const std::vector< int > &multiplicities, int degree, bool periodic=false, bool checkrational=true)
 
void getCardinalSplineTangents (const std::vector< gp_Pnt > &, const std::vector< double > &, std::vector< gp_Vec > &) const
 
void getCardinalSplineTangents (const std::vector< gp_Pnt > &, double, std::vector< gp_Vec > &) const
 
int getDegree () const
 
std::vector< double > getKnots () 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< int > getMultiplicities () const
 
int getMultiplicity (int index) const
 
std::vector< Base::Vector3dgetPoles () const
 
virtual PyObjectgetPyObject (void)
 This method returns the Python wrapper for a C++ object. More...
 
std::vector< double > getWeights () const
 
const Handle (Geom_Geometry) &handle() const
 
void increaseDegree (int degree)
 
void increaseMultiplicity (int index, int multiplicity)
 
void interpolate (const std::vector< gp_Pnt > &, const std::vector< gp_Vec > &)
 
bool isPeriodic () const
 
bool isRational () const
 
bool join (const Handle(Geom_BSplineCurve)&)
 
void makeC1Continuous (double, double)
 
bool removeKnot (int index, int multiplicity, double tolerance=Precision::PConfusion())
 
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(Geom_BSplineCurve)&)
 
void setKnot (int index, const double val, int mult=-1)
 
void setKnots (const std::vector< double > &knots)
 
void setKnots (const std::vector< double > &knots, const std::vector< int > &multiplicities)
 
void setPole (int index, const Base::Vector3d &, double weight=-1)
 
void setPoles (const std::vector< Base::Vector3d > &poles)
 
void setPoles (const std::vector< Base::Vector3d > &poles, const std::vector< double > &weights)
 
void setWeights (const std::vector< double > &weights)
 
std::list< Geometry * > toBiArcs (double tolerance) const
 
virtual ~GeomBSplineCurve ()
 
- Public Member Functions inherited from Part::GeomBoundedCurve
 GeomBoundedCurve ()
 
virtual Base::Vector3d getEndPoint () const
 
virtual Base::Vector3d getStartPoint () const
 
virtual ~GeomBoundedCurve ()
 
- Public Member Functions inherited from Part::GeomCurve
bool closestParameter (const Base::Vector3d &point, double &u) const
 
bool closestParameterToBasisCurve (const Base::Vector3d &point, double &u) const
 
double curvatureAt (double u) const
 
Base::Vector3d firstDerivativeAtParameter (double u) const
 
 GeomCurve ()
 
double getFirstParameter () const
 
double getLastParameter () const
 
bool intersect (GeomCurve *c, std::vector< std::pair< Base::Vector3d, Base::Vector3d >> &points, double tol=Precision::Confusion()) const
 
double length (double u, double v) const
 
bool normalAt (double u, Base::Vector3d &dir) const
 
Base::Vector3d pointAtParameter (double u) const
 
void reverse (void)
 
Base::Vector3d secondDerivativeAtParameter (double u) const
 
bool tangent (double u, Base::Vector3d &dir) const
 
bool tangent (double u, gp_Dir &) const
 
GeomBSplineCurvetoBSpline (double first, double last) const
 toBSpline Converts the curve to a B-spline More...
 
virtual GeomBSplineCurvetoNurbs (double first, double last) const
 
TopoDS_Shape toShape () const
 
virtual ~GeomCurve ()
 
- Public Member Functions inherited from Part::Geometry
Geometryclone (void) const
 returns a cloned object. More...
 
void deleteExtension (Base::Type type)
 
void deleteExtension (std::string name)
 
std::weak_ptr< GeometryExtensiongetExtension (Base::Type type)
 
std::weak_ptr< const GeometryExtensiongetExtension (Base::Type type) const
 
std::weak_ptr< GeometryExtensiongetExtension (std::string name)
 
std::weak_ptr< const GeometryExtensiongetExtension (std::string name) const
 
std::vector< std::weak_ptr< const GeometryExtension > > getExtensions () const
 
boost::uuids::uuid getTag () const
 returns the tag of the geometry object More...
 
bool hasExtension (Base::Type type) const
 
bool hasExtension (std::string name) const
 
void mirror (const Base::Vector3d &point)
 
void mirror (const Base::Vector3d &point, const Base::Vector3d &dir)
 
void rotate (const Base::Placement &plm)
 
void scale (const Base::Vector3d &vec, double scale)
 
void setExtension (std::unique_ptr< GeometryExtension > &&geo)
 
void transform (const Base::Matrix4D &mat)
 
void translate (const Base::Vector3d &vec)
 
virtual ~Geometry ()
 
- 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::Geometry
void assignTag (const Part::Geometry *)
 copies the tag from the geometry passed as a parameter to this object More...
 
void copyNonTag (const Part::Geometry *)
 
void createNewTag ()
 create a new tag for the geometry object More...
 
 Geometry ()
 
- Static Protected Member Functions inherited from Part::GeomCurve
static bool intersect (const Handle(Geom_Curve) c, const Handle(Geom_Curve) c2, std::vector< std::pair< Base::Vector3d, Base::Vector3d >> &points, double tol=Precision::Confusion())
 
- Static Protected Member Functions inherited from Base::BaseClass
static void initSubclass (Base::Type &toInit, const char *ClassName, const char *ParentName, Type::instantiationMethod method=nullptr)
 
- Protected Attributes inherited from Part::Geometry
std::vector< std::shared_ptr< GeometryExtension > > extensions
 
boost::uuids::uuid tag
 

Constructor & Destructor Documentation

◆ GeomBSplineCurve() [1/3]

GeomBSplineCurve::GeomBSplineCurve ( )

◆ GeomBSplineCurve() [2/3]

GeomBSplineCurve::GeomBSplineCurve ( const Handle(Geom_BSplineCurve)&  b)

References setHandle().

◆ GeomBSplineCurve() [3/3]

GeomBSplineCurve::GeomBSplineCurve ( const std::vector< Base::Vector3d > &  poles,
const std::vector< double > &  weights,
const std::vector< double > &  knots,
const std::vector< int > &  multiplicities,
int  degree,
bool  periodic = false,
bool  checkrational = true 
)

◆ ~GeomBSplineCurve()

GeomBSplineCurve::~GeomBSplineCurve ( )
virtual

Member Function Documentation

◆ approximate()

bool GeomBSplineCurve::approximate ( double  tol3d,
int  maxSegments,
int  maxDegree,
int  continuity 
)

GeomBSplineCurve::approximate.

Parameters
tol3d
maxSegments
maxDegree
continuity
Returns
true if the approximation succeeded, false otherwise

References Handle(), and setHandle().

Referenced by Part::BSplineCurvePy::approximate().

◆ copy()

virtual Geometry* Part::GeomBSplineCurve::copy ( void  ) const
virtual

returns a copy of this object having a new randomly generated tag.

If you also want to copy the tag, you may use clone() instead. For creation of geometry with other handles, with or without the same tag, you may use the constructors and the sethandle functions. The tag of a geometry can be copied to another geometry using the assignTag function.

Implements Part::Geometry.

◆ countKnots()

◆ countPoles()

◆ getCardinalSplineTangents() [1/2]

void GeomBSplineCurve::getCardinalSplineTangents ( const std::vector< gp_Pnt > &  p,
const std::vector< double > &  c,
std::vector< gp_Vec > &  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 GeomBSplineCurve::getCardinalSplineTangents ( const std::vector< gp_Pnt > &  p,
double  c,
std::vector< gp_Vec > &  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.

◆ getDegree()

◆ getKnots()

◆ getMemSize()

unsigned int GeomBSplineCurve::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::Geometry.

◆ getMultiplicities()

std::vector< int > GeomBSplineCurve::getMultiplicities ( ) const

◆ getMultiplicity()

int GeomBSplineCurve::getMultiplicity ( int  index) const

◆ getPoles()

◆ getPyObject()

PyObject * GeomBSplineCurve::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.

References Part::Geometry::clone().

◆ getWeights()

std::vector< double > GeomBSplineCurve::getWeights ( ) const

◆ Handle()

const Part::GeomBSplineCurve::Handle ( Geom_Geometry  ) const &
virtual

◆ increaseDegree()

void GeomBSplineCurve::increaseDegree ( int  degree)

References Handle().

◆ increaseMultiplicity()

void GeomBSplineCurve::increaseMultiplicity ( int  index,
int  multiplicity 
)

References Handle().

◆ interpolate()

void GeomBSplineCurve::interpolate ( const std::vector< gp_Pnt > &  p,
const std::vector< gp_Vec > &  t 
)

Set the poles and tangents for the cubic Hermite spline

References Handle().

◆ isPeriodic()

bool GeomBSplineCurve::isPeriodic ( ) const

◆ isRational()

bool GeomBSplineCurve::isRational ( ) const

◆ join()

bool GeomBSplineCurve::join ( const Handle(Geom_BSplineCurve)&  spline)

◆ makeC1Continuous()

void GeomBSplineCurve::makeC1Continuous ( double  tol,
double  ang_tol 
)

◆ removeKnot()

bool GeomBSplineCurve::removeKnot ( int  index,
int  multiplicity,
double  tolerance = Precision::PConfusion() 
)

◆ Restore()

void GeomBSplineCurve::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");
}
The XML reader class This is an important helper class for the store and retrieval system of objects ...
Definition: Reader.h:118
void readElement(const char *ElementName=0)
read until a start element is found (<name>) or start-end element (<name/>) (with special name if giv...
Definition: Reader.cpp:240
double getAttributeAsFloat(const char *AttrName) const
return the named attribute as a double floating point (does type checking)
Definition: Reader.cpp:158

Reimplemented from Part::Geometry.

References Base::XMLReader::getAttributeAsFloat(), Base::XMLReader::getAttributeAsInteger(), Handle(), Base::XMLReader::readElement(), Base::XMLReader::readEndElement(), and Part::Geometry::Restore().

◆ Save()

void GeomBSplineCurve::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::Geometry.

References Base::Writer::decInd(), getDegree(), getKnots(), getMultiplicities(), getPoles(), getWeights(), Base::Writer::incInd(), Base::Writer::ind(), isPeriodic(), Part::Geometry::Save(), and Base::Writer::Stream().

◆ setHandle()

◆ setKnot()

void GeomBSplineCurve::setKnot ( int  index,
const double  val,
int  mult = -1 
)

Referenced by setKnots().

◆ setKnots() [1/2]

void GeomBSplineCurve::setKnots ( const std::vector< double > &  knots)

References setKnot().

◆ setKnots() [2/2]

void GeomBSplineCurve::setKnots ( const std::vector< double > &  knots,
const std::vector< int > &  multiplicities 
)

References setKnot().

◆ setPole()

void Part::GeomBSplineCurve::setPole ( int  index,
const Base::Vector3d ,
double  weight = -1 
)

Referenced by setPoles().

◆ setPoles() [1/2]

void GeomBSplineCurve::setPoles ( const std::vector< Base::Vector3d > &  poles)

References setPole().

◆ setPoles() [2/2]

void GeomBSplineCurve::setPoles ( const std::vector< Base::Vector3d > &  poles,
const std::vector< double > &  weights 
)

◆ setWeights()

void GeomBSplineCurve::setWeights ( const std::vector< double > &  weights)

◆ toBiArcs()

std::list< Geometry * > GeomBSplineCurve::toBiArcs ( double  tolerance) const

The documentation for this class was generated from the following files:
  • Sources/FreeCAD/src/Mod/Part/App/Geometry.h
  • Sources/FreeCAD/src/Mod/Part/App/BSplineCurveBiArcs.cpp
  • Sources/FreeCAD/src/Mod/Part/App/Geometry.cpp