bezier Class Reference

Nth order bezier curve edge. Only interior control points should be specified. The outer points are taken as start and end. Note that the calculation of each point takes 0(N^2) time, where N is the number of control points. This edge type shouldn't therefore be used for finely discretised line data; polyLine or similar will be more appropriate for such cases. Beziers are useful for simple curved shapes such as aerofoils, or when you want an edge to match a specific direction at one, or both, or its endpoints. In comparison with BSplines, the grading of bezier edges should be smoother, and the code is much simpler. The algorithmic order is worse, however, and the edge will not follow the control points as closely. More...

Inheritance diagram for bezier:

Collaboration diagram for bezier:

Public Member Functions
	TypeName ("bezier")
	bezier (const pointField &points, const edge &fromTo, const pointField &control)
	bezier (const pointField &points, const label from, const label to, const pointField &control)
	bezier (const dictionary &dict, const label index, const searchableSurfaces &, const pointField &points, Istream &is)
virtual	~bezier ()=default
point	position (const scalar lambda) const
scalar	length () const
Public Member Functions inherited from blockEdge
	TypeName ("blockEdge")
	declareRunTimeSelectionTable (autoPtr, blockEdge, Istream,(const dictionary &dict, const label index, const searchableSurfaces &geometry, const pointField &points, Istream &is),(dict, index, geometry, points, is))
	blockEdge (const pointField &points, const edge &fromTo)
	blockEdge (const dictionary &dict, const label index, const pointField &points, Istream &is)
virtual autoPtr< blockEdge >	clone () const
virtual	~blockEdge ()=default
bool	valid () const noexcept
label	start () const noexcept
label	end () const noexcept
const point &	firstPoint () const
const point &	lastPoint () const
int	compare (const blockEdge &e) const
int	compare (const edge &e) const
int	compare (const label start, const label end) const
point	linearPosition (const scalar lambda) const
virtual tmp< pointField >	position (const scalarList &lambdas) const
void	write (Ostream &os, const dictionary &dict) const

Additional Inherited Members
Static Public Member Functions inherited from blockEdge
static autoPtr< blockEdge >	New (const dictionary &dict, const label index, const searchableSurfaces &geometry, const pointField &points, Istream &is)
Protected Member Functions inherited from blockEdge
	blockEdge (const pointField &points, const label from, const label to)
Static Protected Member Functions inherited from blockEdge
static pointField	appendEndPoints (const pointField &p, const label from, const label to, const pointField &intermediate)
Protected Attributes inherited from blockEdge
const pointField &	points_
const label	start_
const label	end_

Detailed Description

Nth order bezier curve edge. Only interior control points should be specified. The outer points are taken as start and end. Note that the calculation of each point takes 0(N^2) time, where N is the number of control points. This edge type shouldn't therefore be used for finely discretised line data; polyLine or similar will be more appropriate for such cases. Beziers are useful for simple curved shapes such as aerofoils, or when you want an edge to match a specific direction at one, or both, or its endpoints. In comparison with BSplines, the grading of bezier edges should be smoother, and the code is much simpler. The algorithmic order is worse, however, and the edge will not follow the control points as closely.

Source files

• bezier.H
• bezier.C

Definition at line 57 of file bezier.H.

Constructor & Destructor Documentation

bezier() [1/3]

bezier	(	const pointField &	points,
		const edge &	fromTo,
		const pointField &	control
	)

Parameters

points	Referenced point field
fromTo	Start/end in point field
control	The control points

Definition at line 41 of file bezier.C.

bezier() [2/3]

bezier	(	const pointField &	points,
		const label	from,
		const label	to,
		const pointField &	control
	)

Parameters

points	Referenced point field
from	Start point in point field
to	End point in point field
control	The control points

Definition at line 53 of file bezier.C.

bezier() [3/3]

bezier	(	const dictionary &	dict,
		const label	index,
		const searchableSurfaces &	,
		const pointField &	points,
		Istream &	is
	)

Parameters

points

Referenced point field

Definition at line 65 of file bezier.C.

~bezier()

virtual ~bezier ( )

virtualdefault

Member Function Documentation

TypeName()

TypeName

(

"bezier"

)

position()

Foam::point position ( const scalar  lambda ) const

virtual

Implements blockEdge.

Definition at line 83 of file bezier.C.

References forAll, and lambda().

Here is the call graph for this function:

length()

Foam::scalar length ( ) const

virtual

Implements blockEdge.

Definition at line 102 of file bezier.C.

References NotImplemented.

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

• src/mesh/blockMesh/blockEdges/bezier/bezier.H
• src/mesh/blockMesh/blockEdges/bezier/bezier.C