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-- File: ShapeFix_WireSegment.cdl
-- Created: Tue Apr 27 10:42:17 1999
-- Author: Andrey BETENEV
-- <abv@nnov.matra-dtv.fr>
---Copyright: Matra Datavision 1999
class WireSegment from ShapeFix
---Purpose: This class is auxiliary class used in ComposeShell.
-- It is intended for representing segment of the wire
-- (or whole wire). The segment itself is represented by
-- ShapeExtend_WireData. In addition, some associated data
-- necessary for computations are stored:
--
-- * Orientation flag - determines current use of the segment
-- and used for parity checking:
--
-- TopAbs_FORWARD and TopAbs_REVERSED - says that segment was
-- traversed once in the corresponding direction, and hence
-- it should be traversed once more in opposite direction;
--
-- TopAbs_EXTERNAL - the segment was not yet traversed in any
-- direction (i.e. not yet used as boundary)
--
-- TopAbs_INTERNAL - the segment was traversed in both
-- directions and hence is out of further work.
--
-- Segments of initial bounding wires are created with
-- orientation REVERSED (for outer wire) or FORWARD (for inner
-- wires), and segments of splitting seams - with orientation
-- EXTERNAL.
uses
Orientation from TopAbs,
Edge from TopoDS,
Wire from TopoDS,
Vertex from TopoDS,
WireData from ShapeExtend,
HSequenceOfInteger from TColStd
is
Create returns WireSegment;
---Purpose: Creates empty segment.
Create (wire: WireData from ShapeExtend;
ori: Orientation from TopAbs = TopAbs_EXTERNAL)
returns WireSegment;
---Purpose: Creates segment and initializes it with wire and orientation.
Create (wire: Wire from TopoDS;
ori: Orientation from TopAbs = TopAbs_EXTERNAL)
returns WireSegment;
---Purpose: Creates segment and initializes it with wire and orientation.
Clear (me: in out);
---Purpose: Clears all fields.
Load (me: in out; wire: WireData from ShapeExtend);
---Purpose: Loads wire.
WireData (me) returns WireData from ShapeExtend;
---Purpose: Returns wire.
---C++: return const &
Orientation (me: in out; ori: Orientation from TopAbs);
---Purpose: Sets orientation flag.
Orientation (me) returns Orientation from TopAbs;
---Purpose: Returns orientation flag.
FirstVertex (me) returns Vertex from TopoDS;
---Purpose: Returns first vertex of the first edge in the wire
-- (no dependance on Orientation()).
LastVertex (me) returns Vertex from TopoDS;
---Purpose: Returns last vertex of the last edge in the wire
-- (no dependance on Orientation()).
IsClosed (me) returns Boolean;
---Purpose: Returns True if FirstVertex() == LastVertex()
---Scope: work with edges and synchronous maintaining patch indices
NbEdges (me) returns Integer;
---Purpose: Returns Number of edges in the wire
Edge (me; i: Integer) returns Edge from TopoDS;
---Purpose: Returns edge by given index in the wire
SetEdge (me: in out; i: Integer; edge: Edge from TopoDS);
---Purpose: Replaces edge at index i by new one.
AddEdge (me: in out; i: Integer; edge: Edge from TopoDS);
---Purpose: Insert a new edge with index i and implicitly defined
-- patch indices (indefinite patch).
-- If i==0, edge is inserted at end of wire.
AddEdge (me: in out; i: Integer; edge: Edge from TopoDS;
iumin, iumax, ivmin, ivmax: Integer);
---Purpose: Insert a new edge with index i and explicitly defined
-- patch indices. If i==0, edge is inserted at end of wire.
SetPatchIndex (me: in out; i: Integer; iumin, iumax, ivmin, ivmax: Integer);
---Purpose: Set patch indices for edge i.
DefineIUMin (me: in out; i: Integer; iumin: Integer);
DefineIUMax (me: in out; i: Integer; iumax: Integer);
DefineIVMin (me: in out; i: Integer; ivmin: Integer);
DefineIVMax (me: in out; i: Integer; ivmax: Integer);
---Purpose: Modify minimal or maximal patch index for edge i.
-- The corresponding patch index for that edge is modified so
-- as to satisfy eq. iumin <= myIUMin(i) <= myIUMax(i) <= iumax
GetPatchIndex (me; i: Integer; iumin, iumax, ivmin, ivmax: out Integer);
---Purpose: Returns patch indices for edge i.
CheckPatchIndex (me; i: Integer) returns Boolean;
---Purpose: Checks patch indices for edge i to satisfy equations
-- IUMin(i) <= IUMax(i) <= IUMin(i)+1
-- for non-manifold faces if face contains INTERNAL vertices
SetVertex(me: in out; theVertex: Vertex from TopoDS);
--SetVertex(me: in out; theVertex: Vertex from TopoDS;iumin, iumax, ivmin, ivmax: Integer );
GetVertex(me) returns Vertex from TopoDS;
IsVertex(me) returns Boolean;
fields
myWire : WireData from ShapeExtend;
myVertex : Vertex from TopoDS;
myOrient: Orientation from TopAbs;
myIUMin : HSequenceOfInteger from TColStd; -- indices
myIUMax : HSequenceOfInteger from TColStd; -- for
myIVMin : HSequenceOfInteger from TColStd; -- patch
myIVMax : HSequenceOfInteger from TColStd; --
end WireSegment;
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