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

Additional Inherited Members
Static Public Member Functions inherited from CallBacker
static void	createReceiverForCurrentThread ()
static void	removeReceiverForCurrentThread ()
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
uiString &	errmsg ()
void	triggerMovement ()
void	triggerMovement (const GeomPosID &)
void	triggerMovement (const TypeSet< GeomPosID > &)
void	triggerNrPosCh ()
void	triggerNrPosCh (const GeomPosID &)
void	triggerNrPosCh (const TypeSet< GeomPosID > &)
Protected Attributes inherited from Geometry::Element
bool	blockcbs_
bool	ischanged_
TypeSet< GeomPosID >	movementbuffer_
TypeSet< GeomPosID >	nrposchbuffer_

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

computePosition()

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

pure virtual

Computes the position between two samples

Implemented in Geometry::CubicBezierCurve.

computeTangent()

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.

createIterator()

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

virtual

Implements Geometry::Element.

findClosestIntersection()

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

findClosestPosition()

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

getPosIDs()

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

virtual

Returns a list with all defined positions.

Reimplemented from Geometry::Element.

insertPosition()

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

pure virtual

Implemented in Geometry::CubicBezierCurve.

isCircular()

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

inlinevirtual

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

Reimplemented in Geometry::CubicBezierCurve.

parameterRange()

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

pure virtual

Implemented in Geometry::CubicBezierCurve.