| 7fd59977 |
1 | -- File: BRepOffsetAPI_MakeOffset.cdl |
| 2 | -- Created: Mon Sep 18 13:40:56 1995 |
| 3 | -- Author: Bruno DUMORTIER |
| 4 | -- <dub@fuegox> |
| 5 | ---Copyright: Matra Datavision 1995 |
| 6 | |
| 7 | |
| 8 | class MakeOffset from BRepOffsetAPI inherits MakeShape from BRepBuilderAPI |
| 9 | |
| 10 | ---Purpose: Describes algorithms for offsetting wires from a set of |
| 11 | -- wires contained in a planar face. |
| 12 | -- A MakeOffset object provides a framework for: |
| 13 | -- - defining the construction of an offset, |
| 14 | -- - implementing the construction algorithm, and |
| 15 | -- - consulting the result. |
| 16 | |
| 17 | uses |
| 18 | Shape from TopoDS, |
| 19 | Wire from TopoDS, |
| 20 | Face from TopoDS, |
| 21 | ListOfShape from TopTools, |
| 22 | OffsetWire from BRepFill, |
| 23 | ListOfOffsetWire from BRepFill, |
| 24 | JoinType from GeomAbs |
| 25 | |
| 26 | |
| 27 | raises |
| 28 | ConstructionError from Standard |
| 29 | |
| 30 | is |
| 31 | Create returns MakeOffset from BRepOffsetAPI; |
| 32 | ---Purpose: Constructs an algorithm for creating an empty offset |
| 33 | Create( Spine : Face from TopoDS; |
| 34 | Join : JoinType from GeomAbs = GeomAbs_Arc) |
| 35 | returns MakeOffset from BRepOffsetAPI; |
| 36 | ---Purpose: Constructs an algorithm for creating an algorithm |
| 37 | -- to build parallels to the spine Spine |
| 38 | Init( me : in out; |
| 39 | Spine : Face from TopoDS; |
| 40 | Join : JoinType from GeomAbs = GeomAbs_Arc) |
| 41 | ---Purpose: Initializes the algorithm to construct parallels to the spine Spine. |
| 42 | -- Join defines the type of parallel generated by the |
| 43 | -- salient vertices of the spine. The default type is |
| 44 | -- GeomAbs_Arc where the vertices generate sections |
| 45 | -- of a circle. At present, this is the only construction type implemented. |
| 46 | is static; |
| 47 | |
| 48 | Create( Spine : Wire from TopoDS; |
| 49 | Join : JoinType from GeomAbs = GeomAbs_Arc) |
| 50 | returns MakeOffset from BRepOffsetAPI; |
| 51 | |
| 52 | Init( me : in out; |
| 53 | Join : JoinType from GeomAbs = GeomAbs_Arc) |
| 54 | ---Purpose: Initialize the evaluation of Offseting. |
| 55 | is static; |
| 56 | |
| 57 | AddWire (me : in out; |
| 58 | Spine : Wire from TopoDS) |
| 59 | ---Purpose: Initializes the algorithm to construct parallels to the wire Spine. |
| 60 | is static; |
| 61 | |
| 62 | Perform (me : in out; |
| 63 | Offset : Real from Standard; |
| 64 | Alt : Real from Standard = 0.0) |
| 65 | ---Purpose: Computes a parallel to the spine at distance Offset and |
| 66 | -- at an altitude Alt from the plane of the spine in relation |
| 67 | -- to the normal to the spine. |
| 68 | -- Exceptions: Standard_ConstructionError if the offset is not built. |
| 69 | raises |
| 70 | ConstructionError from Standard |
| 71 | is static; |
| 72 | |
| 73 | |
| 74 | Build(me : in out) |
| 75 | is redefined; |
| 76 | ---Purpose: Builds the resulting shape (redefined from MakeShape). |
| 77 | ---Level: Public |
| 78 | |
| 79 | Generated (me: in out; S : Shape from TopoDS) |
| 80 | ---Purpose: returns a list of the created shapes |
| 81 | -- from the shape <S>. |
| 82 | ---C++: return const & |
| 83 | ---Level: Public |
| 84 | returns ListOfShape from TopTools |
| 85 | is redefined; |
| 86 | |
| 87 | |
| 88 | fields |
| 89 | |
| 90 | myIsInitialized : Boolean from Standard; |
| 91 | myLastIsLeft : Boolean from Standard; |
| 92 | myJoin : JoinType from GeomAbs; |
| 93 | myFace : Face from TopoDS; |
| 94 | myWires : ListOfShape from TopTools; |
| 95 | myLeft : ListOfOffsetWire from BRepFill; |
| 96 | myRight : ListOfOffsetWire from BRepFill; |
| 97 | |
| 98 | end MakeOffset; |
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