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-- File: GeomAPI_PointsToBSplineSurface.cdl
-- Created: Mon Jan 16 09:01:47 1995
-- Author: Remi LEQUETTE
-- <rle@bravox>
---Copyright: Matra Datavision 1995
class PointsToBSplineSurface from GeomAPI
---Purpose: This class is used to approximate or interpolate
-- a BSplineSurface passing through an Array2 of
-- points, with a given continuity.
-- Describes functions for building a BSpline
-- surface which approximates or interpolates a set of points.
-- A PointsToBSplineSurface object provides a framework for:
-- - defining the data of the BSpline surface to be built,
-- - implementing the approximation algorithm
-- or the interpolation algorithm, and consulting the results.
uses
Array2OfPnt from TColgp,
Array2OfReal from TColStd,
Shape from GeomAbs,
BSplineSurface from Geom,
ParametrizationType from Approx
raises
NotDone from StdFail
is
Create
---Purpose: Constructs an empty algorithm for
-- approximation or interpolation of a surface.
-- Use:
-- - an Init function to define and build the
-- BSpline surface by approximation, or
-- - an Interpolate function to define and build
-- the BSpline surface by interpolation.
returns PointsToBSplineSurface from GeomAPI;
Create(Points : Array2OfPnt 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: Approximates a BSpline Surface passing through an
-- array of Points. 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 PointsToBSplineSurface from GeomAPI;
Create(Points : Array2OfPnt 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: Approximates a BSpline Surface passing through an
-- array of Points. 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 PointsToBSplineSurface from GeomAPI;
Create(Points : Array2OfPnt 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: Approximates a BSpline Surface passing through an
-- array of points using variational smoothing algorithm,
-- which tries to minimize additional criterium:
-- Weight1*CurveLength + Weight2*Curvature + Weight3*Torsion
---Level: Public
returns PointsToBSplineSurface from GeomAPI;
Create(ZPoints : Array2OfReal from TColStd;
X0 : Real from Standard;
dX : Real from Standard;
Y0 : Real from Standard;
dY : Real from Standard;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximates a BSpline Surface passing through an
-- array of Points.
--
-- The points will be constructed as follow:
-- P(i,j) = gp_Pnt( X0 + (i-1)*dX ,
-- Y0 + (j-1)*dY ,
-- ZPoints(i,j) )
--
-- 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
-- 4- the parametrization of the surface will verify:
-- S->Value( U, V) = gp_Pnt( U, V, Z(U,V) );
---Level: Public
returns PointsToBSplineSurface from GeomAPI;
Init(me : in out;
Points : Array2OfPnt 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: Approximates a BSpline Surface 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;
Interpolate(me : in out; Points : Array2OfPnt from TColgp)
---Purpose: Interpolates a BSpline Surface passing through an
-- array of Point. The resulting BSpline will have
-- the following properties:
-- 1- his degree will be 3.
-- 2- his continuity will be C2.
---Level: Public
is static;
Interpolate(me : in out; Points : Array2OfPnt from TColgp;
ParType : ParametrizationType from Approx)
---Purpose: Interpolates a BSpline Surface passing through an
-- array of Point. The resulting BSpline will have
-- the following properties:
-- 1- his degree will be 3.
-- 2- his continuity will be C2.
---Level: Public
is static;
Init(me : in out;
ZPoints : Array2OfReal from TColStd;
X0 : Real from Standard;
dX : Real from Standard;
Y0 : Real from Standard;
dY : Real from Standard;
DegMin : Integer from Standard = 3;
DegMax : Integer from Standard = 8;
Continuity : Shape from GeomAbs = GeomAbs_C2;
Tol3D : Real from Standard = 1.0e-3)
---Purpose: Approximates a BSpline Surface passing through an
-- array of Points.
--
-- The points will be constructed as follow:
-- P(i,j) = gp_Pnt( X0 + (i-1)*dX ,
-- Y0 + (j-1)*dY ,
-- ZPoints(i,j) )
--
-- 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
-- 4- the parametrization of the surface will verify:
-- S->Value( U, V) = gp_Pnt( U, V, Z(U,V) );
---Level: Public
is static;
Interpolate(me : in out;
ZPoints : Array2OfReal from TColStd;
X0 : Real from Standard;
dX : Real from Standard;
Y0 : Real from Standard;
dY : Real from Standard)
---Purpose: Interpolates a BSpline Surface passing through an
-- array of Points.
--
-- The points will be constructed as follow:
-- P(i,j) = gp_Pnt( X0 + (i-1)*dX ,
-- Y0 + (j-1)*dY ,
-- ZPoints(i,j) )
--
-- The resulting BSpline will have the following
-- properties:
-- 1- his degree will be 3
-- 2- his continuity will be C2.
-- 4- the parametrization of the surface will verify:
-- S->Value( U, V) = gp_Pnt( U, V, Z(U,V) );
---Level: Public
is static;
Init(me : in out;
Points : Array2OfPnt 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: Approximates a BSpline Surface 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 : Array2OfPnt 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: Approximates a BSpline Surface 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;
Surface(me)
---Purpose: Returns the approximate BSpline Surface
returns BSplineSurface from Geom
---C++: return const &
---C++: alias "Standard_EXPORT operator Handle(Geom_BSplineSurface)() const;"
raises
NotDone from StdFail
is static;
IsDone(me)
returns Boolean from Standard
is static;
fields
myIsDone : Boolean from Standard;
mySurface : BSplineSurface from Geom;
end PointsToBSplineSurface;
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