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-- File: BRepFeat.cdl
-- Created: Tue Jun 13 11:24:18 1995
-- Author: Jacques GOUSSARD
-- <jag@bravox>
---Copyright: Matra Datavision 1995
package BRepFeat
---Purpose: BRepFeat is necessary for the
-- creation and manipulation of both form and mechanical features in a
-- Boundary Representation framework. Form features can be depressions or
-- protrusions and include the following types:
-- - Cylinder
-- - Draft Prism
-- - Prism
-- - Revolved feature
-- - Pipe
-- Depending on whether you wish to make a depression or a protrusion,
-- you can choose your operation type between the following:
-- - removing matter (a Boolean cut: Fuse setting 0)
-- - adding matter (Boolean fusion: Fuse setting 1)
-- The semantics of form feature creation is based on the
-- construction of shapes:
-- - for a certain length in a certain direction
-- - up to a limiting face
-- - from a limiting face at a height
-- - above and/or below a plane
-- The shape defining the construction of a feature can be either a
-- supporting edge or a concerned area of a face.
-- In case of supporting edge, this contour can be attached to a face
-- of the basis shape by binding. When the contour is bound to this face,
-- the information that the contour will slide on the face becomes
-- available to the relevant class methods. In case of the concerned
-- area of a face, you could, for example, cut it out and move it at
-- a different height, which will define the limiting face of a
-- protrusion or depression. Topological definition with local
-- operations of this sort makes calculations simpler and faster
-- than a global operation. The latter would entail a second phase of
-- removing unwanted matter to get the same result.
-- Mechanical features include ribs - protrusions - and grooves (or
-- slots) - depressions along planar (linear) surfaces or revolution surfaces.
-- The semantics of mechanical features is based on giving
-- thickness to a contour. This thickness can either be unilateral
-- - on one side of the contour - or bilateral - on both sides. As in
-- the semantics of form features, the thickness is defined by
-- construction of shapes in specific contexts.
-- However, in case of mechanical features, development contexts
-- differ. Here they include extrusion:
-- - to a limiting face of the basis shape
-- - to or from a limiting plane
-- - to a height.
uses BRepBuilderAPI,
LocOpe,
TopoDS,
TopTools,
TopOpeBRepBuild,
Geom,
gp,
TColgp,
TColGeom,
StdFail,
BRepTopAdaptor,
Geom2dAdaptor,
TopAbs,
--modified by NIZNHY-PKV Thu Mar 21 18:31:59 2002 f
BRepAlgoAPI,
--modified by NIZNHY-PKV Thu Mar 21 18:32:02 2002 t
BOP
is
enumeration StatusError is
---Purpose: Discribes the error.
OK,
BadDirect,
BadIntersect,
EmptyBaryCurve,
EmptyCutResult,
FalseSide,
IncDirection,
IncSlidFace,
IncParameter,
IncTypes,
IntervalOverlap,
InvFirstShape,
InvOption,
InvShape,
LocOpeNotDone,
LocOpeInvNotDone,
NoExtFace,
NoFaceProf,
NoGluer,
NoIntersectF,
NoIntersectU,
NoParts,
NoProjPt,
NotInitialized,
NotYetImplemented,
NullRealTool,
NullToolF,
NullToolU
end StatusError;
deferred class Builder; -- inherits MakeShape from BRepBuilderAPI
class LocalOperation; -- inherits Builder from BRepFeat;
class MakeCylindricalHole; -- inherits Builder from BRepFeat;
class SplitShape; -- inherits MakeShape from BRepBuilderAPI;
deferred class Form; -- inherits MakeShape from BRepBuilderAPI;
deferred class RibSlot; -- inherits MakeShape from BRepBuilderAPI;
class MakePrism; -- inherits Form from BRepFeat
class MakeRevol; -- inherits Form from BRepFeat
class MakePipe; -- inherits Form from BRepFeat
class Gluer; -- inherits MakeShape from BRepBuilderAPI
class MakeDPrism;
class MakeLinearForm;
class MakeRevolutionForm;
enumeration Status is -- to be completed
NoError,
InvalidPlacement,
HoleTooLong
end Status;
enumeration PerfSelection is
NoSelection,
SelectionFU,
SelectionU,
SelectionSh,
SelectionShU
---Purpose: To declare the type of selection semantics for local operation Perform methods
-- - NoSelection
-- - SelectionFU - selection of a face up to which a
-- local operation will be performed
-- - SelectionU - selection of a point up to which a
-- local operation will be performed
-- - SelectionSh - selection of a shape on which a
-- local operation will be performed
-- - SelectionShU - selection of a shape up to which a
-- local operation will be performed.
end PerfSelection;
SampleEdges(S : Shape from TopoDS;
Pt: in out SequenceOfPnt from TColgp);
Barycenter(S : Shape from TopoDS;
Pt: in out Pnt from gp);
ParametricBarycenter(S : Shape from TopoDS;
C : Curve from Geom)
returns Real from Standard;
ParametricMinMax(S : Shape from TopoDS;
C : Curve from Geom;
prmin : out Real from Standard;
prmax : out Real from Standard;
prbmin: out Real from Standard;
prbmax: out Real from Standard;
flag : out Boolean from Standard;
Ori : Boolean from Standard = Standard_False);
---Purpose: Ori = True taking account the orientation
IsInside(F1 : Face from TopoDS;
F2 : Face from TopoDS)
returns Boolean from Standard;
IsInOut (FC : FClass2d from BRepTopAdaptor;
AC : Curve from Geom2dAdaptor)
returns Boolean from Standard;
-- TangSli(E : Edge from TopoDS;
-- F : Shape from TopoDS)
-- returns Boolean from Standard;
FaceUntil (S : Shape from TopoDS;
F : in out Face from TopoDS);
Tool (SRef : Shape from TopoDS;
Fac : Face from TopoDS;
Orf : Orientation from TopAbs)
returns Solid from TopoDS;
Print(SE : StatusError from BRepFeat; S : in out OStream) returns OStream;
---Purpose: Prints the Error description of the State <St> as a String on
-- the Stream <S> and returns <S>.
--
---C++: return &
end BRepFeat;
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