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-- File: BRepCheck_Analyzer.cdl
-- Created: Fri Dec 8 15:57:56 1995
-- Author: Jacques GOUSSARD
-- <jag@bravox>
---Copyright: Matra Datavision 1995
class Analyzer from BRepCheck
---Purpose: A framework to check the overall
-- validity of a shape. For a shape to be valid in Open
-- CASCADE, it - or its component subshapes - must respect certain
-- criteria. These criteria are checked by the function IsValid.
-- Once you have determined whether a shape is valid or not, you can
-- diagnose its specific anomalies and correct them using the services of
-- the ShapeAnalysis, ShapeUpgrade, and ShapeFix packages.
uses Shape from TopoDS,
ShapeEnum from TopAbs,
Result from BRepCheck,
DataMapOfShapeResult from BRepCheck
raises NullObject from Standard,
NoSuchObject from Standard
is
Create(S: Shape from TopoDS;
GeomControls : Boolean from Standard = Standard_True)
---Purpose: Constructs a shape validation object defined by the shape S.
-- <S> is the shape to control. <GeomControls> If
-- False only topological informaions are checked.
-- The geometricals controls are
-- For a Vertex :
-- BRepCheck_InvalidToleranceValue NYI
-- For an Edge :
-- BRepCheck_InvalidCurveOnClosedSurface,
-- BRepCheck_InvalidCurveOnSurface,
-- BRepCheck_InvalidSameParameterFlag,
-- BRepCheck_InvalidToleranceValue NYI
-- For a face :
-- BRepCheck_UnorientableShape,
-- BRepCheck_IntersectingWires,
-- BRepCheck_InvalidToleranceValue NYI
-- For a wire :
-- BRepCheck_SelfIntersectingWire
---C++: inline
returns Analyzer from BRepCheck
raises NullObject from Standard;
Init(me: in out; S: Shape from TopoDS;
GeomControls : Boolean from Standard = Standard_True)
---Purpose: <S> is the shape to control. <GeomControls> If
-- False only topological informaions are checked.
-- The geometricals controls are
-- For a Vertex :
-- BRepCheck_InvalidTolerance NYI
-- For an Edge :
-- BRepCheck_InvalidCurveOnClosedSurface,
-- BRepCheck_InvalidCurveOnSurface,
-- BRepCheck_InvalidSameParameterFlag,
-- BRepCheck_InvalidTolerance NYI
-- For a face :
-- BRepCheck_UnorientableShape,
-- BRepCheck_IntersectingWires,
-- BRepCheck_InvalidTolerance NYI
-- For a wire :
-- BRepCheck_SelfIntersectingWire
raises NullObject from Standard
is static;
IsValid(me; S: Shape from TopoDS)
---Purpose: <S> is a subshape of the original shape. Returns
-- <STandard_True> if no default has been detected on
-- <S> and any of its subshape.
returns Boolean from Standard
raises NoSuchObject from Standard
is static;
IsValid(me)
---Purpose: Returns true if no defect is
-- detected on the shape S or any of its subshapes.
-- Returns true if the shape S is valid.
-- This function checks whether a given shape is valid by checking that:
-- - the topology is correct
-- - parameterization of edges in particular is correct.
-- For the topology to be correct, the following conditions must be satisfied:
-- - edges should have at least two vertices if they are not
-- degenerate edges. The vertices should be within the range of
-- the bounding edges at the tolerance specified in the vertex,
-- - edges should share at least one face. The representation of
-- the edges should be within the tolerance criterion assigned to them.
-- - wires defining a face should not self-intersect and should be closed,
-- - there should be one wire which contains all other wires inside a face,
-- - wires should be correctly oriented with respect to each of the edges,
-- - faces should be correctly oriented, in particular with
-- respect to adjacent faces if these faces define a solid,
-- - shells defining a solid should be closed. There should
-- be one enclosing shell if the shape is a solid;
-- To check parameterization of edge, there are 2 approaches depending on
-- the edge?s contextual situation.
-- - if the edge is either single, or it is in the context
-- of a wire or a compound, its parameterization is defined by
-- the parameterization of its 3D curve and is considered as valid.
-- - If the edge is in the context of a face, it should
-- have SameParameter and SameRange flags set to Standard_True. To
-- check these flags, you should call the function
-- BRep_Tool::SameParameter and BRep_Tool::SameRange for an
-- edge. If at least one of these flags is set to Standard_False,
-- the edge is considered as invalid without any additional check.
-- If the edge is contained by a face, and it has SameParameter and
-- SameRange flags set to Standard_True, IsValid checks
-- whether representation of the edge on face, in context of which the
-- edge is considered, has the same parameterization up to the
-- tolerance value coded on the edge. For a given parameter t on the edge
-- having C as a 3D curve and one PCurve P on a surface S (base
-- surface of the reference face), this checks that |C(t) - S(P(t))|
-- is less than or equal to tolerance, where tolerance is the tolerance
-- value coded on the edge.
---C++: inline
returns Boolean from Standard
is static;
Result(me; SubS: Shape from TopoDS)
---C++: return const&
---C++: inline
returns any Result from BRepCheck
raises NoSuchObject from Standard
is static;
--- Private implementation method
Put(me: in out; S: Shape from TopoDS; Gctrl: Boolean from Standard)
is static private;
Perform(me: in out; S: Shape from TopoDS)
is static private;
ValidSub(me; S: Shape from TopoDS; SubType: ShapeEnum from TopAbs)
returns Boolean from Standard
is static private;
fields
myShape : Shape from TopoDS;
myMap : DataMapOfShapeResult from BRepCheck;
end Analyzer;
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