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-- File: GeomFill_BSplineCurves.cdl
-- Created: Wed Oct 6 10:50:12 1993
-- Author: Bruno DUMORTIER
-- <dub@sdsun1>
---Copyright: Matra Datavision 1993
class BSplineCurves from GeomFill
---Purpose: An algorithm for constructing a BSpline surface filled
-- from contiguous BSpline curves which form its boundaries.
-- The algorithm accepts two, three or four BSpline
-- curves as the boundaries of the target surface.
-- A range of filling styles - more or less rounded, more
-- or less flat - is available.
-- A BSplineCurves object provides a framework for:
-- - defining the boundaries, and the filling style of the surface
-- - implementing the construction algorithm
-- - consulting the result.
-- Warning
-- Some problems may show up with rational curves.
uses
BSplineCurve from Geom,
BSplineSurface from Geom,
FillingStyle from GeomFill
raises
ConstructionError from Standard
is
Create;
---Purpose: Constructs a default BSpline surface framework.
Create( C1, C2, C3, C4 : BSplineCurve from Geom;
Type : FillingStyle from GeomFill)
returns BSplineCurves from GeomFill;
Create( C1, C2, C3 : BSplineCurve from Geom;
Type : FillingStyle from GeomFill)
returns BSplineCurves from GeomFill;
Create( C1, C2 : BSplineCurve from Geom;
Type : FillingStyle from GeomFill)
returns BSplineCurves from GeomFill;
---Purpose: Constructs a framework for building a BSpline surface from either
-- - the four contiguous BSpline curves, C1, C2, C3 and C4, or
-- - the three contiguous BSpline curves, C1, C2 and C3, or
-- - the two contiguous BSpline curves, C1 and C2.
-- The type of filling style Type to be used is one of:
-- - GeomFill_Stretch - the style with the flattest patch
-- - GeomFill_Coons - a rounded style of patch with
-- less depth than that of Curved
-- - GeomFill_Curved - the style with the most rounded
-- patch.Constructs a framework for building a BSpline
-- surface common to the two BSpline curves, C1 and C2.
-- Exceptions
-- Standard_ConstructionError if the curves are not contiguous.
Init( me : in out;
C1, C2, C3, C4 : BSplineCurve from Geom;
Type : FillingStyle from GeomFill)
raises
ConstructionError from Standard
---Purpose: if the curves cannot be joined
is static;
Init( me : in out;
C1, C2, C3 : BSplineCurve from Geom;
Type : FillingStyle from GeomFill)
raises
ConstructionError from Standard
---Purpose: if the curves cannot be joined
is static;
Init( me : in out;
C1, C2 : BSplineCurve from Geom;
Type : FillingStyle from GeomFill)
is static;
---Purpose: Initializes or reinitializes this algorithm with two, three,
-- or four curves - C1, C2, C3, and C4 - and Type, one
-- of the following filling styles:
-- - GeomFill_Stretch - the style with the flattest patch
-- - GeomFill_Coons - a rounded style of patch with
-- less depth than that of Curved
-- - GeomFill_Curved - the style with the most rounded patch.
-- Exceptions
-- Standard_ConstructionError if the curves are not contiguous.
Surface(me) returns BSplineSurface from Geom
---Purpose: Returns the BSpline surface Surface resulting from
-- the computation performed by this algorithm.
---C++: return const&
---C++: inline
is static;
fields
mySurface : BSplineSurface from Geom;
end BSplineCurves;
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