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-- File: GeomFill_BezierCurves.cdl
-- Created: Wed Oct 6 10:30:09 1993
-- Author: Bruno DUMORTIER
-- <dub@sdsun1>
---Copyright: Matra Datavision 1993
class BezierCurves from GeomFill
---Purpose: This class provides an algorithm for constructing a Bezier surface filled from
-- contiguous Bezier curves which form its boundaries.
-- The algorithm accepts two, three or four Bezier curves
-- as the boundaries of the target surface.
-- A range of filling styles - more or less rounded, more or less flat - is available.
-- A BezierCurves 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
BezierCurve from Geom,
BezierSurface from Geom,
FillingStyle from GeomFill
raises
ConstructionError from Standard
is
Create;
--- Purpose: Constructs an empty framework for building a Bezier
-- surface from contiguous Bezier curves.
-- You use the Init function to define the boundaries of the surface.
Create( C1, C2, C3, C4 : BezierCurve from Geom;
Type : FillingStyle from GeomFill)
returns BezierCurves from GeomFill;
---Purpose: Constructs a framework for building a Bezier surface
-- from the four contiguous Bezier curves, C1, C2, C3 and C4
-- Raises Standard_ConstructionError if the curves are not contiguous.
Create( C1, C2, C3 : BezierCurve from Geom;
Type : FillingStyle from GeomFill)
returns BezierCurves from GeomFill;
---Purpose: Constructs a framework for building a Bezier surface
-- from the three contiguous Bezier curves, C1, C2 and C3
-- Raises Standard_ConstructionError if the curves are not contiguous.
Create( C1, C2 : BezierCurve from Geom;
Type : FillingStyle from GeomFill)
returns BezierCurves from GeomFill;
---Purpose: Constructs a framework for building a Bezier surface
-- from the two contiguous Bezier curves, C1 and C2
-- Raises Standard_ConstructionError if the curves are not contiguous.
Init( me : in out;
C1, C2, C3, C4 : BezierCurve 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 : BezierCurve 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 : BezierCurve 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 BezierSurface from Geom
---Purpose: Returns the Bezier surface resulting from the
-- computation performed by this algorithm.
---C++: return const&
---C++: inline
is static;
fields
mySurface : BezierSurface from Geom;
end BezierCurves;
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