#include <TColgp_SequenceOfPnt.hxx>
#include <GeomAbs_Shape.hxx>
-class Standard_DomainError;
-class Standard_ConstructionError;
-class Standard_OutOfRange;
-class StdFail_NotDone;
class Adaptor3d_Curve;
class Adaptor2d_Curve2d;
class gp_Pnt;
-//! This class computes a distribution of points on a
-//! curve. The points may respect the deflection. The algorithm
-//! is not based on the classical prediction (with second
-//! derivative of curve), but either on the evaluation of
-//! the distance between the mid point and the point of
-//! mid parameter of the two points, or the distance
-//! between the mid point and the point at parameter 0.5
-//! on the cubic interpolation of the two points and their
-//! tangents.
-//! Note: this algorithm is faster than a
-//! GCPnts_UniformDeflection algorithm, and is
-//! able to work with non-"C2" continuous curves.
+//! This class computes a distribution of points on a curve.
+//! The points may respect the deflection.
+//! The algorithm is not based on the classical prediction (with second derivative of curve),
+//! but either on the evaluation of the distance between the mid point
+//! and the point of mid parameter of the two points,
+//! or the distance between the mid point and the point at parameter 0.5
+//! on the cubic interpolation of the two points and their tangents.
+//!
+//! Note: this algorithm is faster than a GCPnts_UniformDeflection algorithm,
+//! and is able to work with non-"C2" continuous curves.
//! However, it generates more points in the distribution.
class GCPnts_QuasiUniformDeflection
{
DEFINE_STANDARD_ALLOC
-
- //! Constructs an empty algorithm. To define the problem
- //! to be solved, use the function Initialize.
+ //! Constructs an empty algorithm.
+ //! To define the problem to be solved, use the function Initialize().
Standard_EXPORT GCPnts_QuasiUniformDeflection();
-
- //! Computes a QuasiUniform Deflection distribution
- //! of points on the Curve <C>.
- Standard_EXPORT GCPnts_QuasiUniformDeflection(const Adaptor3d_Curve& C, const Standard_Real Deflection, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
- //! Computes a QuasiUniform Deflection distribution
- //! of points on the Curve <C>.
- Standard_EXPORT GCPnts_QuasiUniformDeflection(const Adaptor2d_Curve2d& C, const Standard_Real Deflection, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
- //! Computes a QuasiUniform Deflection distribution
- //! of points on a part of the Curve <C>.
- Standard_EXPORT GCPnts_QuasiUniformDeflection(const Adaptor3d_Curve& C, const Standard_Real Deflection, const Standard_Real U1, const Standard_Real U2, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
- //! Computes a QuasiUniform Deflection distribution
- //! of points on a part of the Curve <C>.
+
+ //! Computes a QuasiUniform Deflection distribution of points on the Curve.
+ Standard_EXPORT GCPnts_QuasiUniformDeflection (const Adaptor3d_Curve& theC,
+ const Standard_Real theDeflection,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
+
+ //! Computes a QuasiUniform Deflection distribution of points on the Curve.
+ Standard_EXPORT GCPnts_QuasiUniformDeflection (const Adaptor2d_Curve2d& theC,
+ const Standard_Real theDeflection,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
+
+ //! Computes a QuasiUniform Deflection distribution of points on a part of the Curve.
+ Standard_EXPORT GCPnts_QuasiUniformDeflection (const Adaptor3d_Curve& theC,
+ const Standard_Real theDeflection,
+ const Standard_Real theU1, const Standard_Real theU2,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
+
+ //! Computes a QuasiUniform Deflection distribution of points on a part of the Curve.
//! This and the above algorithms compute a distribution of points:
- //! - on the curve C, or
- //! - on the part of curve C limited by the two
- //! parameter values U1 and U2,
+ //! - on the curve theC, or
+ //! - on the part of curve theC limited by the two parameter values theU1 and theU2,
//! where the deflection resulting from the distributed
- //! points is not greater than Deflection.
+ //! points is not greater than theDeflection.
+ //!
//! The first point of the distribution is either the origin of
- //! curve C or the point of parameter U1. The last point
- //! of the distribution is either the end point of curve C or
- //! the point of parameter U2.
+ //! curve theC or the point of parameter theU1.
+ //! The last point of the distribution is either the end point
+ //! of curve theC or the point of parameter theU2.
+ //!
//! Intermediate points of the distribution are built such
- //! that the deflection is not greater than Deflection.
+ //! that the deflection is not greater than theDeflection.
//! Using the following evaluation of the deflection:
//! if Pi and Pj are two consecutive points of the
- //! distribution, respectively of parameter ui and uj on
- //! the curve, the deflection is the distance between:
- //! - the mid-point of Pi and Pj (the center of the
- //! chord joining these two points)
+ //! distribution, respectively of parameter ui and uj on the curve,
+ //! the deflection is the distance between:
+ //! - the mid-point of Pi and Pj (the center of the chord joining these two points)
//! - and the point of mid-parameter of these two
- //! points (the point of parameter [(ui+uj) / 2 ] on curve C).
- //! Continuity, defaulted to GeomAbs_C1, gives the
- //! degree of continuity of the curve C. (Note that C is an
- //! Adaptor3d_Curve or an Adaptor2d_Curve2d
- //! object, and does not know the degree of continuity of
- //! the underlying curve).
- //! Use the function IsDone to verify that the
- //! computation was successful, the function NbPoints
- //! to obtain the number of points of the computed
- //! distribution, and the function Parameter to read the
- //! parameter of each point.
+ //! points (the point of parameter [(ui+uj) / 2] on curve theC).
+ //! theContinuity, defaulted to GeomAbs_C1, gives the degree of continuity of the curve theC.
+ //! (Note that C is an Adaptor3d_Curve or an Adaptor2d_Curve2d object,
+ //! and does not know the degree of continuity of the underlying curve).
+ //! Use the function IsDone() to verify that the computation was successful,
+ //! the function NbPoints() to obtain the number of points of the computed distribution,
+ //! and the function Parameter() to read the parameter of each point.
+ //!
//! Warning
- //! - The roles of U1 and U2 are inverted if U1 > U2.
- //! - Derivative functions on the curve are called
- //! according to Continuity. An error may occur if
- //! Continuity is greater than the real degree of
- //! continuity of the curve.
+ //! - The roles of theU1 and theU2 are inverted if theU1 > theU2.
+ //! - Derivative functions on the curve are called according to theContinuity.
+ //! An error may occur if theContinuity is greater than
+ //! the real degree of continuity of the curve.
+ //!
//! Warning
- //! C is an adapted curve, i.e. an object which is an
- //! interface between:
+ //! theC is an adapted curve, i.e. an object which is an interface between:
//! - the services provided by either a 2D curve from
- //! the package Geom2d (in the case of an
- //! Adaptor2d_Curve2d curve) or a 3D curve from
- //! the package Geom (in the case of an
- //! Adaptor3d_Curve curve),
- //! - and those required on the curve by the
- //! computation algorithm.
- Standard_EXPORT GCPnts_QuasiUniformDeflection(const Adaptor2d_Curve2d& C, const Standard_Real Deflection, const Standard_Real U1, const Standard_Real U2, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
- //! Initialize the algorithms with <C>, <Deflection>
- Standard_EXPORT void Initialize (const Adaptor3d_Curve& C, const Standard_Real Deflection, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
- //! Initialize the algorithms with <C>, <Deflection>
- Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C, const Standard_Real Deflection, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
- //! Initialize the algorithms with <C>, <Deflection>,
- //! <U1>,<U2>
- Standard_EXPORT void Initialize (const Adaptor3d_Curve& C, const Standard_Real Deflection, const Standard_Real U1, const Standard_Real U2, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
- //! Initialize the algorithms with <C>, <Deflection>,
- //! -- <U1>,<U2>
+ //! the package Geom2d (in the case of an Adaptor2d_Curve2d curve)
+ //! or a 3D curve from the package Geom (in the case of an Adaptor3d_Curve curve),
+ //! - and those required on the curve by the computation algorithm.
+ Standard_EXPORT GCPnts_QuasiUniformDeflection (const Adaptor2d_Curve2d& theC,
+ const Standard_Real theDeflection,
+ const Standard_Real theU1, const Standard_Real theU2,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
+
+ //! Initialize the algorithms with 3D curve and deflection.
+ Standard_EXPORT void Initialize (const Adaptor3d_Curve& theC,
+ const Standard_Real theDeflection,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
+
+ //! Initialize the algorithms with 2D curve and deflection.
+ Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& theC,
+ const Standard_Real theDeflection,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
+
+ //! Initialize the algorithms with 3D curve, deflection and parameter range.
+ Standard_EXPORT void Initialize (const Adaptor3d_Curve& theC,
+ const Standard_Real theDeflection,
+ const Standard_Real theU1, const Standard_Real theU2,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
+
+ //! Initialize the algorithms with theC, theDeflection, theU1, theU2.
//! This and the above algorithms initialize (or reinitialize)
//! this algorithm and compute a distribution of points:
- //! - on the curve C, or
- //! - on the part of curve C limited by the two
- //! parameter values U1 and U2,
+ //! - on the curve theC, or
+ //! - on the part of curve theC limited by the two parameter values theU1 and theU2,
//! where the deflection resulting from the distributed
- //! points is not greater than Deflection.
+ //! points is not greater than theDeflection.
+ //!
//! The first point of the distribution is either the origin
- //! of curve C or the point of parameter U1. The last
- //! point of the distribution is either the end point of
- //! curve C or the point of parameter U2.
+ //! of curve theC or the point of parameter theU1.
+ //! The last point of the distribution is either the end point of
+ //! curve theC or the point of parameter theU2.
+ //!
//! Intermediate points of the distribution are built in
- //! such a way that the deflection is not greater than
- //! Deflection. Using the following evaluation of the deflection:
- //! if Pi and Pj are two consecutive points of the
- //! distribution, respectively of parameter ui and uj
- //! on the curve, the deflection is the distance between:
- //! - the mid-point of Pi and Pj (the center of the
- //! chord joining these two points)
+ //! such a way that the deflection is not greater than theDeflection.
+ //! Using the following evaluation of the deflection:
+ //! if Pi and Pj are two consecutive points of the distribution,
+ //! respectively of parameter ui and uj on the curve,
+ //! the deflection is the distance between:
+ //! - the mid-point of Pi and Pj (the center of the chord joining these two points)
//! - and the point of mid-parameter of these two
- //! points (the point of parameter [(ui+uj) / 2 ] on curve C).
- //! Continuity, defaulted to GeomAbs_C1, gives the
- //! degree of continuity of the curve C. (Note that C is
- //! an Adaptor3d_Curve or an
- //! Adaptor2d_Curve2d object, and does not know
- //! the degree of continuity of the underlying curve).
- //! Use the function IsDone to verify that the
- //! computation was successful, the function NbPoints
- //! to obtain the number of points of the computed
- //! distribution, and the function Parameter to read
- //! the parameter of each point.
+ //! points (the point of parameter [(ui+uj) / 2] on curve theC).
+ //! theContinuity, defaulted to GeomAbs_C1, gives the degree of continuity of the curve theC.
+ //! (Note that C is an Adaptor3d_Curve or an Adaptor2d_Curve2d object,
+ //! and does not know the degree of continuity of the underlying curve).
+ //! Use the function IsDone to verify that the computation was successful,
+ //! the function NbPoints() to obtain the number of points of the computed distribution,
+ //! and the function Parameter() to read the parameter of each point.
+ //!
//! Warning
- //! - The roles of U1 and U2 are inverted if U1 > U2.
- //! - Derivative functions on the curve are called
- //! according to Continuity. An error may occur if
- //! Continuity is greater than the real degree of
- //! continuity of the curve.
+ //! - The roles of theU1 and theU2 are inverted if theU1 > theU2.
+ //! - Derivative functions on the curve are called according to theContinuity.
+ //! An error may occur if theContinuity is greater than
+ //! the real degree of continuity of the curve.
+ //!
//! Warning
- //! C is an adapted curve, i.e. an object which is an
- //! interface between:
+ //! theC is an adapted curve, i.e. an object which is an interface between:
//! - the services provided by either a 2D curve from
- //! the package Geom2d (in the case of an
- //! Adaptor2d_Curve2d curve) or a 3D curve from
- //! the package Geom (in the case of an Adaptor3d_Curve curve),
- //! and those required on the curve by the computation algorithm.
- Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C, const Standard_Real Deflection, const Standard_Real U1, const Standard_Real U2, const GeomAbs_Shape Continuity = GeomAbs_C1);
-
+ //! the package Geom2d (in the case of an Adaptor2d_Curve2d curve)
+ //! or a 3D curve from the package Geom (in the case of an Adaptor3d_Curve curve),
+ //! and those required on the curve by the computation algorithm.
+ Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& theC,
+ const Standard_Real theDeflection,
+ const Standard_Real theU1, const Standard_Real theU2,
+ const GeomAbs_Shape theContinuity = GeomAbs_C1);
//! Returns true if the computation was successful.
//! IsDone is a protection against:
return myDeflection;
}
+private:
+
+ //! Initializes algorithm.
+ template<class TheCurve>
+ void initialize (const TheCurve& theC,
+ const Standard_Real theDeflection,
+ const Standard_Real theU1, const Standard_Real theU2,
+ const GeomAbs_Shape theContinuity);
+
private:
Standard_Boolean myDone;
Standard_Real myDeflection;
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