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-- File: ShapeCustom_BSplineRestriction.cdl
-- Created: Fri Jun 18 12:02:57 1999
-- Author: Galina Koulikova
-- <gka@zamox.nnov.matra-dtv.fr>
---Copyright: Matra Datavision 1999
private class BSplineRestriction from ShapeCustom inherits Modification from BRepTools
---Purpose: this tool intended for aproximation surfaces, curves and pcurves with
-- specified degree , max number of segments, tolerance 2d, tolerance 3d. Specified
-- continuity can be reduced if approximation with specified continuity was not done.
uses
Surface from Geom,
Curve from Geom,
Curve from Geom2d,
Shape from TopoDS,
Face from TopoDS,
Edge from TopoDS,
Vertex from TopoDS,
Location from TopLoc,
Shape from GeomAbs,
Pnt from gp,
RestrictionParameters from ShapeCustom
is
Create returns mutable BSplineRestriction from ShapeCustom;
---Purpose: Empty constructor.
Create(anApproxSurfaceFlag,
anApproxCurve3dFlag,
anApproxCurve2dFlag : Boolean;
aTol3d, aTol2d : Real;
aContinuity3d, aContinuity2d: Shape from GeomAbs ;
aMaxDegree, aNbMaxSeg : Integer;
Degree, Rational : Boolean)
returns mutable BSplineRestriction from ShapeCustom;
---Purpose: Initializes with specified parameters of aproximation.
Create(anApproxSurfaceFlag, anApproxCurve3dFlag, anApproxCurve2dFlag: Boolean from Standard;
aTol3d, aTol2d : Real;
aContinuity3d, aContinuity2d : Shape from GeomAbs ;
aMaxDegree, aNbMaxSeg : Integer;
Degree, Rational : Boolean;
aModes : RestrictionParameters from ShapeCustom)
returns mutable BSplineRestriction from ShapeCustom;
---Purpose: Initializes with specified parameters of aproximation.
NewSurface(me: mutable; F : Face from TopoDS;
S : out Surface from Geom;
L : out Location from TopLoc;
Tol : out Real from Standard;
RevWires : out Boolean from Standard;
RevFace : out Boolean from Standard)
---Purpose: Returns Standard_True if the face <F> has been
-- modified. In this case, <S> is the new geometric
-- support of the face, <L> the new location,<Tol>
-- the new tolerance.<RevWires> has to be set to
-- Standard_True when the modification reverses the
-- normal of the surface.(the wires have to be
-- reversed). <RevFace> has to be set to
-- Standard_True if the orientation of the modified
-- face changes in the shells which contain it.
--
-- Otherwise, returns Standard_False, and <S>, <L>,
-- <Tol> , <RevWires> ,<RevFace> are not significant.
returns Boolean from Standard;
NewCurve(me: mutable; E : Edge from TopoDS;
C : out Curve from Geom;
L : out Location from TopLoc;
Tol: out Real from Standard)
returns Boolean from Standard;
---Purpose: Returns Standard_True if curve from the edge <E> has been
-- modified. In this case, <C> is the new geometric
-- support of the edge, <L> the new location, <Tol>
-- the new tolerance.
-- Otherwise, returns Standard_True if Surface is modified or
-- one of pcurves of edge is modified. In this case C is copy of
-- geometric support of the edge.
-- In other cases returns Standard_False, and <C>, <L>, <Tol> are not
-- significant.
NewCurve2d(me: mutable; E : Edge from TopoDS;
F : Face from TopoDS;
NewE : Edge from TopoDS;
NewF : Face from TopoDS;
C : out Curve from Geom2d;
Tol : out Real from Standard)
returns Boolean from Standard;
---Purpose: Returns Standard_True if the edge <E> has been modified.
-- In this case,if curve on the surface is modified, <C>
-- is the new geometric support of the edge, <L> the
-- new location, <Tol> the new tolerance. If curve on the surface
-- is not modified C is copy curve on surface from the edge <E>.
--
-- Otherwise, returns Standard_False, and <C>, <L>,
-- <Tol> are not significant.
--
-- <NewE> is the new edge created from <E>. <NewF>
-- is the new face created from <F>. They may be usefull.
ConvertSurface(me: mutable; aSurface : Surface from Geom; S : out Surface from Geom;
UF,UL,VF,VL : Real from Standard;
IsOf : Boolean from Standard = Standard_True)
returns Boolean from Standard;
---Purpose: Returns Standard_True if the surface has been modified.
-- if flag IsOf equals Standard_True Offset surfaces are aproximated to Offset
-- if Standard_False to BSpline
ConvertCurve(me: mutable;aCurve : in out Curve from Geom; C : out Curve from Geom; IsConvert : Boolean;
First, Last : Real; TolCur : in out Real;IsOf : Boolean from Standard = Standard_True)
returns Boolean from Standard;
---Purpose: Returns Standard_True if the curve has been modified.
-- if flag IsOf equals Standard_True Offset curves are aproximated to Offset
-- if Standard_False to BSpline
ConvertCurve2d(me: mutable;aCurve : in out Curve from Geom2d; C : out Curve from Geom2d; IsConvert : Boolean;
First, Last : Real; TolCur : in out Real;IsOf : Boolean from Standard = Standard_True)
returns Boolean from Standard;
---Purpose: Returns Standard_True if the pcurve has been modified.
-- if flag IsOf equals Standard_True Offset pcurves are aproximated to Offset
-- if Standard_False to BSpline
-- Methods for setting and obtaining fields
SetTol3d(me: mutable; Tol3d : Real from Standard);
---C++: inline
---Purpose: Sets tolerance of aproximation for curve3d and surface
SetTol2d(me: mutable; Tol2d : Real from Standard);
---C++: inline
---Purpose: Sets tolerance of aproximation for curve2d
ModifyApproxSurfaceFlag(me : mutable) returns Boolean;
---C++: inline
---C++: return &
---Purpose: Returns (modifiable) the flag which defines whether the
-- surface is aproximated.
ModifyApproxCurve3dFlag(me : mutable) returns Boolean;
---C++: inline
---C++: return &
---Purpose: Returns (modifiable) the flag which defines whether the
-- curve3d is aproximated.
ModifyApproxCurve2dFlag(me : mutable) returns Boolean;
---C++: inline
---C++: return &
---Purpose: Returns (modifiable) the flag which defines whether the curve2d is aproximated.
SetContinuity3d(me : mutable; Continuity3d : Shape from GeomAbs);
---C++: inline
---Purpose: Sets continuity3d for aproximation curve3d and surface.
SetContinuity2d(me : mutable; Continuity2d : Shape from GeomAbs);
---C++: inline
---Purpose: Sets continuity3d for aproximation curve2d.
SetMaxDegree(me : mutable; MaxDegree : Integer from Standard);
---C++: inline
---Purpose: Sets max degree for aproximation.
SetMaxNbSegments(me : mutable; MaxNbSegments : Integer from Standard);
---C++: inline
---Purpose: Sets max number of segments for aproximation.
SetPriority(me : mutable; Degree : Boolean from Standard);
---C++: inline
---Purpose: Sets priority for aproximation curves and surface.
-- If Degree is True approximation is made with degree less
-- then specified MaxDegree at the expense of number of spanes.
-- If Degree is False approximation is made with number of
-- spans less then specified MaxNbSegment at the expense of
-- specified MaxDegree.
SetConvRational(me : mutable; Rational : Boolean from Standard);
---C++: inline
---Purpose: Sets flag for define if rational BSpline or Bezier is
-- converted to polynomial. If Rational is True approximation
-- for rational BSpline and Bezier is made to polynomial even
-- if degree is less then MaxDegree and number of spans is less
-- then specified MaxNbSegment.
GetRestrictionParameters(me)
returns RestrictionParameters from ShapeCustom;
---C++: inline
---Purpose: Returns the container of modes which defines
-- what geometry should be converted to BSplines.
SetRestrictionParameters(me: mutable;
aModes: RestrictionParameters from ShapeCustom);
---C++: inline
---Purpose: Sets the container of modes which defines
-- what geometry should be converted to BSplines.
Curve3dError(me) returns Real;
---C++: inline
---Purpose:Returns error for aproximation curve3d.
Curve2dError(me) returns Real;
---C++: inline
---Purpose:Returns error for aproximation curve2d.
SurfaceError(me) returns Real;
---C++: inline
---Purpose:Returns error for aproximation surface.
NewPoint(me: mutable; V : Vertex from TopoDS;
P : out Pnt from gp;
Tol: out Real from Standard)
returns Boolean from Standard;
NewParameter(me: mutable; V : Vertex from TopoDS;
E : Edge from TopoDS;
P : out Real from Standard;
Tol: out Real from Standard)
returns Boolean from Standard;
Continuity(me: mutable; E : Edge from TopoDS;
F1,F2 : Face from TopoDS;
NewE : Edge from TopoDS;
NewF1,NewF2: Face from TopoDS)
returns Shape from GeomAbs;
MaxErrors (me; aCurve3dErr, aCurve2dErr : out Real) returns Real from Standard;
---Purpose:Returns error for aproximation surface, curve3d and curve2d.
NbOfSpan (me) returns Integer from Standard;
---Purpose:Returns number for aproximation surface, curve3d and curve2d.
fields
myContinuity3d,
myContinuity2d : Shape from GeomAbs;
myMaxDegree,
myNbMaxSeg : Integer from Standard;
myTol3d,
myTol2d,
mySurfaceError,
myCurve3dError,
myCurve2dError : Real from Standard;
myNbOfSpan : Integer from Standard;
myApproxSurfaceFlag,
myApproxCurve3dFlag,
myApproxCurve2dFlag : Boolean from Standard;
myDeg : Boolean from Standard;
myConvert : Boolean from Standard;
myRational : Boolean from Standard;
myParameters : RestrictionParameters from ShapeCustom;
end BSplineRestriction;
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