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-- File: GProp_FaceTool.cdl
-- Created: Fri Nov 27 16:29:37 1992
-- Author: Isabelle GRIGNON
-- <isg@sdsun2>
---Copyright: Matra Datavision 1992
deferred generic class FaceTool from GProp( Arc as any )
---Purpose: This template class defines the minimum of methods required
-- to compute the global properties of Faces with the
-- algorithms of the package GProp.
-- To compute the global properties of a Face, in is necessary
-- to define own "FaceTool" and to implement all the methods
-- defined in this template. Note that it is not necessary to
-- inherit this template class.
uses Pnt from gp,
Pnt2d from gp,
Vec from gp,
Vec2d from gp,
IsoType from GeomAbs,
HArray1OfReal from TColStd
is
UIntegrationOrder (me) returns Integer;
---Purpose: Returns the number of points required to do the
-- integration in the U parametric direction.
Bounds (me; U1, U2, V1, V2 : out Real);
---Purpose: Returns the parametric bounds of the Face <S>.
Normal (me; U, V : Real; P : out Pnt; VNor: out Vec);
---Purpose: Computes the point of parameter U, V on the Face <S> and
-- the normal to the face at this point.
Load(me:in out; A : Arc);
---Purpose: Loading the boundary arc.
Load(me : in out; IsFirstParam: Boolean from Standard;
theIsoType : IsoType from GeomAbs);
---Purpose: Loading the boundary arc. This arc is either a top, bottom,
-- left or right bound of a UV rectangle in which the
-- parameters of surface are defined.
-- If IsFirstParam is equal to Standard_True, the face is
-- initialized by either left of bottom bound. Otherwise it is
-- initialized by the top or right one.
-- If theIsoType is equal to GeomAbs_IsoU, the face is
-- initialized with either left or right bound. Otherwise -
-- with either top or bottom one.
FirstParameter (me) returns Real ;
---Purpose: Returns the parametric value of the start point of
-- the current arc of curve.
LastParameter (me) returns Real ;
---Purpose: Returns the parametric value of the end point of
-- the current arc of curve.
IntegrationOrder (me) returns Integer;
---Purpose: Returns the number of points required to do the
-- integration along the parameter of curve.
D12d (me; U: Real; P: out Pnt2d; V1: out Vec2d);
---Purpose: Returns the point of parameter U and the first derivative
-- at this point of a boundary curve.
GetUKnots(me; theUMin : Real from Standard;
theUMax : Real from Standard;
theUKnots: in out HArray1OfReal from TColStd);
---Purpose: Returns an array of U knots of the face. The first and last
-- elements of the array will be theUMin and theUMax. The
-- middle elements will be the U Knots of the face greater
-- then theUMin and lower then theUMax in increasing order.
GetTKnots(me; theTMin : Real from Standard;
theTMax : Real from Standard;
theTKnots: in out HArray1OfReal from TColStd);
---Purpose: Returns an array of combination of T knots of the arc and
-- V knots of the face. The first and last elements of the
-- array will be theTMin and theTMax. The middle elements will
-- be the Knots of the arc and the values of parameters of
-- arc on which the value points have V coordinates close to V
-- knots of face. All the parameter will be greater then
-- theTMin and lower then theTMax in increasing order.
end FaceTool;
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