-- File:	ShapeFix_EdgeConnect.cdl
-- Created:	Tue May 11 11:27:03 1999
-- Author:	Sergei ZERTCHANINOV
--		<szv@nnov>
---Copyright:	 Matra Datavision 1999


class EdgeConnect  from ShapeFix

    ---Purpose : Makes vertices to be shared to connect edges,
    --           updates positions and tolerances for shared vertices.
    --           Accepts edges bounded by two vertices each.

uses 
    DataMapOfShapeShape from TopTools,
    DataMapOfShapeListOfShape from TopTools,
    Edge from TopoDS, Shape from TopoDS

is

    Create returns EdgeConnect from ShapeFix;

    Add (me : in out; aFirst : Edge from TopoDS; aSecond : Edge from TopoDS);
    ---Purpose : Adds information on connectivity between start vertex
    --           of second edge and end vertex of first edge,
    --           taking edges orientation into account

    Add (me : in out; aShape : Shape from TopoDS);
    ---Purpose : Adds connectivity information for the whole shape.
    --           Note: edges in wires must be well ordered
    --           Note: flag Closed should be set for closed wires

    Build (me : in out);
    ---Purpose : Builds shared vertices, updates their positions and tolerances

    Clear (me : in out);
    ---Purpose : Clears internal data structure

fields

    myVertices : DataMapOfShapeShape from TopTools;       -- Map of pairs (vertex, shared)
    myLists    : DataMapOfShapeListOfShape from TopTools; -- Map of pairs (shared, list of vertices/edges)

end EdgeConnect;