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-- File: GeomConvert_ApproxSurface.cdl
-- Created: Tue Aug 26 10:44:03 1997
-- Author: Stepan MISHIN
-- <smn@toctox.nnov.matra-dtv.fr>
---Copyright: Matra Datavision 1997
class ApproxSurface from GeomConvert
---Purpose: A framework to convert a surface to a BSpline
-- surface. This is done by approximation to a BSpline
-- surface within a given tolerance.
uses
Pnt from gp,
Surface from Geom,
OffsetSurface from Geom,
BSplineSurface from Geom,
Shape from GeomAbs,
ApproxAFunc2Var from AdvApp2Var,
OutOfRange from Standard
raises OutOfRange from Standard
is
Create(Surf: Surface from Geom;
Tol3d: Real;
UContinuity : Shape from GeomAbs;
VContinuity : Shape from GeomAbs;
MaxDegU : Integer;
MaxDegV : Integer;
MaxSegments: Integer;
PrecisCode : Integer) returns ApproxSurface ;
---Purpose: Constructs a surface approximation framework defined by
-- - the conic Surf
-- - the tolerance value Tol3d
-- - the degree of continuity UContinuity, VContinuity
-- in the directions of the U and V parameters
-- - the highest degree MaxDegU, MaxDegV which
-- the polynomial defining the BSpline curve may
-- have in the directions of the U and V parameters
-- - the maximum number of segments MaxSegments
-- allowed in the resulting BSpline curve
-- - the index of precision PrecisCode.
Surface(me) returns BSplineSurface from Geom;
---Purpose: Returns the BSpline surface resulting from the approximation algorithm.
IsDone(me) returns Boolean from Standard;
--- Purpose: Returns Standard_True if the approximation has be done
HasResult(me) returns Boolean;
--- Purpose: Returns true if the approximation did come out with a result that
-- is not NECESSARILY within the required tolerance or a result
-- that is not recognized with the wished continuities.
MaxError(me) returns Real from Standard;
--- Purpose: Returns the greatest distance between a point on the
-- source conic surface and the BSpline surface
-- resulting from the approximation (>0 when an approximation
-- has been done, 0 if no approximation )
Dump(me ; o : in out OStream);
---Purpose: Prints on the stream o informations on the current state of the object.
fields
mySurf : Surface from Geom;
myIsDone : Boolean from Standard;
myHasResult: Boolean from Standard;
myBSplSurf : BSplineSurface from Geom;
myMaxError : Real from Standard;
end;
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