Geometry::ParametricCurve Class Reference

A curve that is defined by regularly sampled positions. More...

Inheritance diagram for Geometry::ParametricCurve:

Public Member Functions
virtual Coord3	computePosition (float) const =0
virtual Coord3	computeTangent (float) const =0
virtual bool	findClosestPosition (float &p, const Coord3 &, float eps=1e-2) const
virtual bool	findClosestIntersection (float &p, const Plane3 &, float eps=1e-2) const
virtual bool	isCircular () const
void	getPosIDs (TypeSet< GeomPosID > &, bool=true) const
Iterator *	createIterator () const
virtual bool	insertPosition (GeomPosID, const Coord3 &)=0
virtual StepInterval< int >	parameterRange () const =0
Public Member Functions inherited from Geometry::Element
	Element ()
virtual	~Element ()
virtual IntervalND< float >	boundingBox (bool approx) const
virtual Element *	clone () const =0
virtual uiString	errMsg () const
virtual Coord3	getPosition (GeomPosID) const =0
virtual bool	setPosition (GeomPosID, const Coord3 &)=0
virtual bool	isDefined (GeomPosID) const =0
virtual bool	isChanged () const
virtual void	resetChangedFlag ()
virtual void	trimUndefParts ()
void	blockCallBacks (bool yn, bool flush=true)
bool	blocksCallBacks () const
Public Member Functions inherited from CallBacker
	CallBacker ()
	CallBacker (const CallBacker &)
virtual	~CallBacker ()
bool	attachCB (NotifierAccess &, const CallBack &, bool onlyifnew=false)
bool	attachCB (NotifierAccess *notif, const CallBack &cb, bool onlyifnew=false)
void	detachCB (NotifierAccess &, const CallBack &)
void	detachCB (NotifierAccess *notif, const CallBack &cb)
bool	isNotifierAttached (NotifierAccess *) const
	Only for debugging purposes, don't use. More...

Additional Inherited Members
Public Attributes inherited from Geometry::Element
CNotifier< Element, const TypeSet< GeomPosID > * >	movementnotifier
CNotifier< Element, const TypeSet< GeomPosID > * >	nrpositionnotifier
Protected Member Functions inherited from Geometry::Element
void	triggerMovement (const TypeSet< GeomPosID > &)
void	triggerMovement (const GeomPosID &)
void	triggerMovement ()
void	triggerNrPosCh (const TypeSet< GeomPosID > &)
void	triggerNrPosCh (const GeomPosID &)
void	triggerNrPosCh ()
uiString &	errmsg ()
Protected Member Functions inherited from CallBacker
void	detachAllNotifiers ()
	Call from the destructor of your inherited object. More...
Protected Attributes inherited from Geometry::Element
bool	blockcbs_
TypeSet< GeomPosID >	nrposchbuffer_
TypeSet< GeomPosID >	movementbuffer_
bool	ischanged_

Detailed Description

A curve that is defined by regularly sampled positions.

The curve's behaviour between the positions is determined by a function of a parameter u: (x(u), y(u), z(u)). The samplerange is determined by parameterRange(). The curve is guaranteed to be continious within its parameter range, and if isCircular() returns true, it connects between parameterRange().stop and parameterRange().start.

Member Function Documentation

virtual Coord3 Geometry::ParametricCurve::computePosition ( float  ) const

pure virtual

Computes the position between two samples

Implemented in Geometry::CubicBezierCurve.

virtual Coord3 Geometry::ParametricCurve::computeTangent ( float  ) const

pure virtual

Note

the tangent is scaled so the components (x, y, z) forms the derivatives: (dx/du, dy/du, dz/du ).

Implemented in Geometry::CubicBezierCurve.

Iterator* Geometry::ParametricCurve::createIterator ( ) const

virtual

Implements Geometry::Element.

virtual bool Geometry::ParametricCurve::findClosestIntersection ( float &  p, const Plane3 &  , float  eps = 1e-2  ) const

virtual

Iterates over the curve to find the closest intersection.

Parameters

eps	the allowed error in parameter space
p	The initial position and the returned intersection. If undef on start, the closest defined position will be used as start

virtual bool Geometry::ParametricCurve::findClosestPosition ( float &  p, const Coord3 &  , float  eps = 1e-2  ) const

virtual

Iterates over the curve to find the closest position

Parameters

eps	the allowed error in parameter space
p	The initial position and the returned best position. If undef on start, the closest defined position will be used as start

void Geometry::ParametricCurve::getPosIDs ( TypeSet< GeomPosID > &  , bool  = true  ) const

virtual

Returns a list with all defined positions.

Reimplemented from Geometry::Element.

virtual bool Geometry::ParametricCurve::insertPosition ( GeomPosID  , const Coord3 &    )

pure virtual

Implemented in Geometry::CubicBezierCurve.

virtual bool Geometry::ParametricCurve::isCircular ( ) const

inlinevirtual

If true, the curve is connected between parameterRange().stop and parameterRange().start.

Reimplemented in Geometry::CubicBezierCurve.

virtual StepInterval<int> Geometry::ParametricCurve::parameterRange ( ) const

pure virtual

Implemented in Geometry::CubicBezierCurve.