cadex.Geom.Curve2d Class Reference

Base class for 2D curves. More...

Inheritance diagram for cadex.Geom.Curve2d:

Public Member Functions
	Curve2d (global::System.IntPtr cPtr, bool cMemoryOwn)
cadex.Geom.CurveType	Type ()
	Returns a curve type.
cadex.Geom.Continuity	Continuity ()
	Returns a continuity type of the curve.
cadex.Geom.Point2d	Value (double theParameter)
	Evaluates a point on the curve.
cadex.Geom.Direction2d	Normal (double theParameter)
	Returns the normal direction theNormal of parameter theParam.
double	Curvature (double theParameter)
	Returns the curvature value of parameter theParam.
double	UMin ()
	Returns a minimum parameter of a definition domain.
double	UMax ()
	Returns a maximum parameter of a definition domain.
void	Domain (out double theUMin, out double theUMax)
	Returns a definition domain.
bool	IsTrimmed ()
	Returns whether curve is trimmed or not.
void	SetTrim (double theFirst, double theLast)
	Trims curve with [theFirst, theLast] section.
void	D0 (double theParameter, cadex.Geom.Point2d theValue)
	Returns the point theValue of parameter theParam.
void	D1 (double theParameter, cadex.Geom.Point2d theValue, cadex.Geom.Vector2d theD1)
	Returns the point theValue of parameter theParam and the first derivative theD1.
void	D2 (double theParameter, cadex.Geom.Point2d theValue, cadex.Geom.Vector2d theD1, cadex.Geom.Vector2d theD2)
	Returns the point theValue of parameter theParam and second derivatives theD1 and theD2.
bool	DN (double theParameter, uint theDerivativeOrder, cadex.Geom.Point2d theValue, cadex.Collections.Vector2dList theD)
void	Transform (cadex.Geom.Transformation2d theTransformation)
	Applies transformation matrix to this object.
cadex.Geom.Curve2d	Transformed (cadex.Geom.Transformation2d theTransformation)
	Returns a copy this object after applying transformation.
Public Member Functions inherited from cadex.Geom.Geometry
	Geometry (global::System.IntPtr cPtr, bool cMemoryOwn)
Public Member Functions inherited from cadex.BaseObject
	BaseObject (global::System.IntPtr cPtr, bool cMemoryOwn)
void	Dispose ()
bool	IsNull ()
ulong	Id ()
	Return unique identifier of public object.
bool	IsEqual (cadex.BaseObject theObj)
override int	GetHashCode ()
override bool	Equals (System.Object o)

Static Public Member Functions
static new bool	CompareType (cadex.BaseObject theObject)
static cadex.Geom.Curve2d	Cast (cadex.Geom.Geometry theBase)
Static Public Member Functions inherited from cadex.Geom.Geometry
static bool	CompareType (cadex.BaseObject theObject)
static cadex.Geom.Geometry	Cast (cadex.BaseObject theBase)

Protected Member Functions
override void	Dispose (bool disposing)
Protected Member Functions inherited from cadex.Geom.Geometry
override void	Dispose (bool disposing)

Detailed Description

Base class for 2D curves.

2D curves are used to represent curves in surface parametric domains (p-curves). They are used by edges owned by faces.

For detailed description refer to 3D counterpart Curve.

See also

Curves.

Examples

exploring/brep_geometry/Program.cs, and exploring/brep_geometry/main.cxx.

Member Function Documentation

D0()

void cadex.Geom.Curve2d.D0 ( double theParameter, cadex.Geom.Point2d theValue )

inline

Returns the point theValue of parameter theParam.

Throws exception only for the OffsetCurve if it is not possible to compute the current point. For example when the first derivative on the basis curve and the offset direction are parallel.

D1()

void cadex.Geom.Curve2d.D1 ( double theParameter, cadex.Geom.Point2d theValue, cadex.Geom.Vector2d theD1 )

inline

Returns the point theValue of parameter theParam and the first derivative theD1.

Throws exception if the continuity of the curve is not C1.

D2()

void cadex.Geom.Curve2d.D2 ( double theParameter, cadex.Geom.Point2d theValue, cadex.Geom.Vector2d theD1, cadex.Geom.Vector2d theD2 )

inline

Returns the point theValue of parameter theParam and second derivatives theD1 and theD2.

Throws exception if the continuity of the curve is not C2.

Dispose()

override void cadex.Geom.Curve2d.Dispose ( bool disposing )

inlineprotectedvirtual

Reimplemented from cadex.BaseObject.

DN()

bool cadex.Geom.Curve2d.DN ( double theParameter, uint theDerivativeOrder, cadex.Geom.Point2d theValue, cadex.Collections.Vector2dList theD )

inline

Returns true if calculation was passed succsesfully, the returned vectors gives the value of the derivative for the order of derivation theDerivativeOrder. Otherwise returns false. Throws exception if the continuity of the curve is not CN.

Parameters:

• theDerivativeOrder must belong to range [0, 3].
• theD should have enough size to store theDerivativeOrder derivatives.

Domain()

void cadex.Geom.Curve2d.Domain ( out double theUMin, out double theUMax )

inline

Returns a definition domain.

See also

UMin(), UMax().

Transform()

void cadex.Geom.Curve2d.Transform ( cadex.Geom.Transformation2d theTransformation )

inline

Applies transformation matrix to this object.

Results depends on the actual curve type.

See also

Transformed().

Transformed()

cadex.Geom.Curve2d cadex.Geom.Curve2d.Transformed ( cadex.Geom.Transformation2d theTransformation )

inline

Returns a copy this object after applying transformation.

The contents of this object is not modified.

See also

Transform().

UMax()

double cadex.Geom.Curve2d.UMax ( )

inline

Returns a maximum parameter of a definition domain.

See also

UMin(), Domain().

Examples

exploring/brep_geometry/Program.cs, and exploring/brep_geometry/main.cxx.

UMin()

double cadex.Geom.Curve2d.UMin ( )

inline

Returns a minimum parameter of a definition domain.

See also

UMax(), Domain().

Examples

exploring/brep_geometry/Program.cs, and exploring/brep_geometry/main.cxx.

Value()

cadex.Geom.Point2d cadex.Geom.Curve2d.Value ( double theParameter )

inline

Evaluates a point on the curve.

theParameter must be within Domain() if the curve is not periodic.