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116 lines
4.2 KiB
Plaintext
116 lines
4.2 KiB
Plaintext
-- Created on: 1995-09-18
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-- Created by: Bruno DUMORTIER
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-- Copyright (c) 1995-1999 Matra Datavision
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-- Copyright (c) 1999-2014 OPEN CASCADE SAS
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--
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-- This file is part of Open CASCADE Technology software library.
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--
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-- This library is free software; you can redistribute it and/or modify it under
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-- the terms of the GNU Lesser General Public License version 2.1 as published
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-- by the Free Software Foundation, with special exception defined in the file
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-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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-- distribution for complete text of the license and disclaimer of any warranty.
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--
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-- Alternatively, this file may be used under the terms of Open CASCADE
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-- commercial license or contractual agreement.
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class MakeOffset from BRepOffsetAPI inherits MakeShape from BRepBuilderAPI
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---Purpose: Describes algorithms for offsetting wires from a set of
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-- wires contained in a planar face.
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-- A MakeOffset object provides a framework for:
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-- - defining the construction of an offset,
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-- - implementing the construction algorithm, and
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-- - consulting the result.
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uses
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Shape from TopoDS,
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Wire from TopoDS,
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Face from TopoDS,
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ListOfShape from TopTools,
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OffsetWire from BRepFill,
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ListOfOffsetWire from BRepFill,
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JoinType from GeomAbs
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raises
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NotDone from StdFail
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is
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Create returns MakeOffset from BRepOffsetAPI;
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---Purpose: Constructs an algorithm for creating an empty offset
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Create( Spine : Face from TopoDS;
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Join : JoinType from GeomAbs = GeomAbs_Arc;
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IsOpenResult : Boolean from Standard = Standard_False)
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returns MakeOffset from BRepOffsetAPI;
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---Purpose: Constructs an algorithm for creating an algorithm
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-- to build parallels to the spine Spine
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Init( me : in out;
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Spine : Face from TopoDS;
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Join : JoinType from GeomAbs = GeomAbs_Arc;
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IsOpenResult : Boolean from Standard = Standard_False)
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---Purpose: Initializes the algorithm to construct parallels to the spine Spine.
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-- Join defines the type of parallel generated by the
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-- salient vertices of the spine.
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-- The default type is GeomAbs_Arc where the vertices generate
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-- sections of a circle.
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-- If join type is GeomAbs_Intersection, the edges that
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-- intersect in a salient vertex generate the edges
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-- prolonged until intersection.
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is static;
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Create( Spine : Wire from TopoDS;
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Join : JoinType from GeomAbs = GeomAbs_Arc;
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IsOpenResult : Boolean from Standard = Standard_False)
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returns MakeOffset from BRepOffsetAPI;
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Init( me : in out;
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Join : JoinType from GeomAbs = GeomAbs_Arc;
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IsOpenResult : Boolean from Standard = Standard_False)
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---Purpose: Initialize the evaluation of Offseting.
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is static;
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AddWire (me : in out;
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Spine : Wire from TopoDS)
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---Purpose: Initializes the algorithm to construct parallels to the wire Spine.
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is static;
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Perform (me : in out;
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Offset : Real from Standard;
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Alt : Real from Standard = 0.0)
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---Purpose: Computes a parallel to the spine at distance Offset and
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-- at an altitude Alt from the plane of the spine in relation
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-- to the normal to the spine.
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-- Exceptions: StdFail_NotDone if the offset is not built.
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raises
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NotDone from StdFail
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is static;
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Build(me : in out)
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is redefined;
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---Purpose: Builds the resulting shape (redefined from MakeShape).
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---Level: Public
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Generated (me: in out; S : Shape from TopoDS)
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---Purpose: returns a list of the created shapes
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-- from the shape <S>.
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---C++: return const &
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---Level: Public
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returns ListOfShape from TopTools
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is redefined;
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fields
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myIsInitialized : Boolean from Standard;
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myLastIsLeft : Boolean from Standard;
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myJoin : JoinType from GeomAbs;
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myIsOpenResult : Boolean from Standard;
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myFace : Face from TopoDS;
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myWires : ListOfShape from TopTools;
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myLeft : ListOfOffsetWire from BRepFill;
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myRight : ListOfOffsetWire from BRepFill;
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end MakeOffset;
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