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-- File: GeomAPI_PointsToBSpline.cdl
-- Created: Mon Mar 21 11:09:36 1994
-- Author: Bruno DUMORTIER
-- <dub@fuegox>
---Copyright: Matra Datavision 1994
class PointsToBSpline from GeomAPI
---Purpose: This class is used to approximate a BsplineCurve
-- passing through an array of points, with a given Continuity.
-- Describes functions for building a 3D BSpline
-- curve which approximates a set of points.
-- A PointsToBSpline object provides a framework for:
-- - defining the data of the BSpline curve to be built,
-- - implementing the approximation algorithm, and consulting the results.
uses
Array1OfPnt from TColgp,
Array1OfReal from TColStd,
Shape from GeomAbs,
ParametrizationType from Approx,
BSplineCurve from Geom
raises
NotDone from StdFail,
OutOfRange from Standard
is
Create
---Purpose: Constructs an empty approximation algorithm.
-- Use an Init function to define and build the BSpline curve.
returns PointsToBSpline from GeomAPI;
Create(Points : Array1OfPnt from TColgp;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point. The resulting BSpline will have
-- the following properties:
-- 1- his degree will be in the range [Degmin,Degmax]
-- 2- his continuity will be at least <Continuity>
-- 3- the distance from the point <Points> to the
-- BSpline will be lower to Tol3D
---Level: Public
returns PointsToBSpline from GeomAPI;
Create(Points : Array1OfPnt from TColgp;
ParType : ParametrizationType from Approx;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point. The resulting BSpline will have
-- the following properties:
-- 1- his degree will be in the range [Degmin,Degmax]
-- 2- his continuity will be at least <Continuity>
-- 3- the distance from the point <Points> to the
-- BSpline will be lower to Tol3D
---Level: Public
returns PointsToBSpline from GeomAPI;
Create(Points : Array1OfPnt from TColgp;
Parameters : Array1OfReal from TColStd;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point, which parameters are given by the
-- array <Parameters>.
-- The resulting BSpline will have the following
-- properties:
-- 1- his degree will be in the range [Degmin,Degmax]
-- 2- his continuity will be at least <Continuity>
-- 3- the distance from the point <Points> to the
-- BSpline will be lower to Tol3D
---Level: Public
returns PointsToBSpline from GeomAPI
raises OutOfRange from Standard;
Create(Points : Array1OfPnt from TColgp;
Weight1 : Real from Standard;
Weight2 : Real from Standard;
Weight3 : Real from Standard;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point using variational smoothing algorithm,
-- which tries to minimize additional criterium:
-- Weight1*CurveLength + Weight2*Curvature + Weight3*Torsion
---Level: Public
returns PointsToBSpline from GeomAPI;
Init(me : in out;
Points : Array1OfPnt from TColgp;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point. The resulting BSpline will have
-- the following properties:
-- 1- his degree will be in the range [Degmin,Degmax]
-- 2- his continuity will be at least <Continuity>
-- 3- the distance from the point <Points> to the
-- BSpline will be lower to Tol3D
---Level: Public
is static;
Init(me : in out;
Points : Array1OfPnt from TColgp;
ParType : ParametrizationType from Approx;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point. The resulting BSpline will have
-- the following properties:
-- 1- his degree will be in the range [Degmin,Degmax]
-- 2- his continuity will be at least <Continuity>
-- 3- the distance from the point <Points> to the
-- BSpline will be lower to Tol3D
---Level: Public
is static;
Init(me : in out;
Points : Array1OfPnt from TColgp;
Parameters : Array1OfReal from TColStd;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point, which parameters are given by the
-- array <Parameters>.
-- The resulting BSpline will have the following
-- properties:
-- 1- his degree will be in the range [Degmin,Degmax]
-- 2- his continuity will be at least <Continuity>
-- 3- the distance from the point <Points> to the
-- BSpline will be lower to Tol3D
---Level: Public
is static;
Init(me : in out;
Points : Array1OfPnt from TColgp;
Weight1 : Real from Standard;
Weight2 : Real from Standard;
Weight3 : Real from Standard;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximate a BSpline Curve passing through an
-- array of Point using variational smoothing algorithm,
-- which tries to minimize additional criterium:
-- Weight1*CurveLength + Weight2*Curvature + Weight3*Torsion
---Level: Public
is static;
Curve(me)
---Purpose: Returns the computed BSpline curve.
-- Raises StdFail_NotDone if the curve is not built.
returns BSplineCurve from Geom
---C++: return const &
---C++: alias "Standard_EXPORT operator Handle(Geom_BSplineCurve)() const;"
raises
NotDone from StdFail
is static;
IsDone(me)
returns Boolean from Standard
is static;
fields
myIsDone : Boolean from Standard;
myCurve : BSplineCurve from Geom;
end PointsToBSpline;
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