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-- File: BRepLib_MakeWire.cdl
-- Created: Thu Jul 8 11:15:02 1993
-- Author: Remi LEQUETTE
-- <rle@phylox>
---Copyright: Matra Datavision 1993
class MakeWire from BRepLib inherits MakeShape from BRepLib
---Purpose: Provides methods to build wires.
--
-- A wire may be built :
--
-- * From a single edge.
--
-- * From a wire and an edge.
--
-- - A new wire is created with the edges of the
-- wire + the edge.
--
-- - If the edge is not connnected to the wire the
-- flag NotDone is set and the method Wire will
-- raise an error.
--
-- - The connection may be :
--
-- . Through an existing vertex. The edge is shared.
--
-- . Through a geometric coincidence of vertices.
-- The edge is copied and the vertices from the
-- edge are replaced by the vertices from the
-- wire.
--
-- . The new edge and the connection vertices are
-- kept by the algorithm.
--
--
-- * From 2, 3, 4 edges.
--
-- - A wire is created from the first edge, the
-- following edges are added.
--
-- * From many edges.
--
-- - The following syntax may be used :
--
-- BRepLib_MakeWire MW;
--
-- // for all the edges ...
-- MW.Add(anEdge);
--
-- TopoDS_Wire W = MW;
uses
WireError from BRepLib,
Wire from TopoDS,
Edge from TopoDS,
Vertex from TopoDS,
MapOfShape from TopTools,
ListOfShape from TopTools
raises
NotDone from StdFail
is
Create
---Purpose: NotDone MakeWire.
---Level: Public
returns MakeWire from BRepLib;
----------------------------------------------
-- From edges
----------------------------------------------
Create(E : Edge from TopoDS)
---Purpose: Make a Wire from an edge.
---Level: Public
returns MakeWire from BRepLib;
Create(E1,E2 : Edge from TopoDS)
---Purpose: Make a Wire from two edges.
---Level: Public
returns MakeWire from BRepLib;
Create(E1,E2,E3 : Edge from TopoDS)
---Purpose: Make a Wire from three edges.
---Level: Public
returns MakeWire from BRepLib;
Create(E1,E2,E3,E4 : Edge from TopoDS)
---Purpose: Make a Wire from four edges.
---Level: Public
returns MakeWire from BRepLib;
----------------------------------------------
-- From wire and edge
----------------------------------------------
Create(W : Wire from TopoDS)
---Purpose: Make a Wire from a Wire. Usefull for adding later.
---Level: Public
returns MakeWire from BRepLib;
Create(W : Wire from TopoDS; E : Edge from TopoDS)
---Purpose: Add an edge to a wire.
---Level: Public
returns MakeWire from BRepLib;
----------------------------------------------
-- Auxiliary methods
----------------------------------------------
Add(me : in out; E : Edge from TopoDS)
---Purpose: Add the edge <E> to the current wire.
---Level: Public
is static;
Add(me : in out; W : Wire from TopoDS)
---Purpose: Add the edges of <W> to the current wire.
---Level: Public
is static;
Add(me : in out; L : ListOfShape from TopTools)
---Purpose: Add the edges of <L> to the current wire.
-- The edges are not to be consecutive. But they are
-- to be all connected geometrically or topologically.
---Level: Public
is static;
----------------------------------------------
-- Results
----------------------------------------------
Error(me) returns WireError from BRepLib
---Level: Public
is static;
Wire(me) returns Wire from TopoDS
---Purpose: Returns the new wire.
--
---C++: return const &
---C++: alias "Standard_EXPORT operator TopoDS_Wire() const;"
---Level: Public
raises
NotDone from StdFail
is static;
Edge(me) returns Edge from TopoDS
---Purpose: Returns the last edge added to the wire.
--
---C++: return const &
---Level: Public
raises
NotDone from StdFail
is static;
Vertex(me) returns Vertex from TopoDS
---Purpose: Returns the last connecting vertex.
--
---C++: return const &
---Level: Public
raises
NotDone from StdFail
is static;
fields
myError : WireError from BRepLib;
myEdge : Edge from TopoDS;
myVertex : Vertex from TopoDS;
myVertices : MapOfShape from TopTools;
FirstVertex : Vertex from TopoDS;
VF, VL : Vertex from TopoDS;
end MakeWire;
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