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-- File: ShapeFix_FreeBounds.cdl
-- Created: Wed Sep 16 12:44:57 1998
-- Author: Roman LYGIN <rln@nnov.matra-dtv.fr>
-- Pavel DURANDIN <pdn@nnov.matra-dtv.fr>
---Copyright: Matra Datavision 1998
class FreeBounds from ShapeFix
---Purpose: This class is intended to output free bounds of the shape
-- (free bounds are the wires consisting of edges referenced by the
-- only face).
-- For building free bounds it uses ShapeAnalysis_FreeBounds class.
-- This class complements it with the feature to reduce the number
-- of open wires.
-- This reduction is performed with help of connecting several
-- adjacent open wires one to another what can lead to:
-- 1. making an open wire with greater length out of several
-- open wires
-- 2. making closed wire out of several open wires
--
-- The connecting open wires is performed with a user-given
-- tolerance.
--
-- When connecting several open wires into one wire their previous
-- end vertices are replaced with new connecting vertices. After
-- that all the edges in the shape sharing previous vertices inside
-- the shape are updated with new vertices. Thus source shape can
-- be modified.
--
-- Since interface of this class is the same as one of
-- ShapeAnalysis_FreeBounds refer to its CDL for details.
uses
Shape from TopoDS,
Compound from TopoDS
is
Create returns FreeBounds from ShapeFix;
---Purpose: Empty constructor
Create (shape : Shape from TopoDS;
sewtoler : Real;
closetoler : Real;
splitclosed: Boolean;
splitopen : Boolean)
returns FreeBounds from ShapeFix;
---Purpose: Builds forecasting free bounds of the <shape> and connects
-- open wires with tolerance <closetoler>.
-- <shape> should be a compound of faces.
-- Tolerance <closetoler> should be greater than tolerance
-- <sewtoler> used for initializing sewing analyzer, otherwise
-- connection of open wires is not performed.
Create (shape : Shape from TopoDS;
closetoler : Real;
splitclosed: Boolean;
splitopen : Boolean)
returns FreeBounds from ShapeFix;
---Purpose: Builds actual free bounds of the <shape> and connects
-- open wires with tolerance <closetoler>.
-- <shape> should be a compound of shells.
GetClosedWires (me) returns Compound from TopoDS;
---Purpose: Returns compound of closed wires out of free edges.
---C++: inline
---C++: return const &
GetOpenWires (me) returns Compound from TopoDS;
---Purpose: Returns compound of open wires out of free edges.
---C++: inline
---C++: return const &
GetShape (me) returns Shape from TopoDS;
---Purpose: Returns modified source shape.
---C++: inline
---C++: return const &
---Level: Internal
Perform (me: in out) returns Boolean is private;
fields
myWires: Compound from TopoDS;
myEdges: Compound from TopoDS;
myShape: Shape from TopoDS;
myShared : Boolean;
mySewToler : Real;
myCloseToler : Real;
mySplitClosed: Boolean;
mySplitOpen : Boolean;
end FreeBounds;
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