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-- File: ShapeAnalysis_FreeBoundsProperties.cdl
-- Created: Thu Jul 30 16:28:40 1998
-- Author: Pavel DURANDIN <pdn@nnov.matra-dtv.fr>
-- Roman LYGIN <rln@nnov.matra-dtv.fr>
---Copyright: Matra Datavision 1998
class FreeBoundsProperties from ShapeAnalysis
---Purpose: This class is intended to calculate shape free bounds
-- properties.
-- This class provides the following functionalities:
-- - calculates area of the contour,
-- - calculates perimeter of the contour,
-- - calculates ratio of average length to average width of the
-- contour,
-- - estimates average width of contour,
-- - finds the notches (narrow 'V'-like sub-contour) on the
-- contour.
--
-- For getting free bounds this class uses
-- ShapeAnalysis_FreeBounds class.
--
-- For description of parameters used for initializing this
-- class refer to CDL of ShapeAnalysis_FreeBounds.
--
-- Properties of each contour are stored in the data structure
-- ShapeAnalysis_FreeBoundData.
uses
Shape from TopoDS,
Wire from TopoDS,
FreeBoundData from ShapeAnalysis,
HSequenceOfFreeBounds from ShapeAnalysis
is
Create returns FreeBoundsProperties from ShapeAnalysis;
---Purpose: Empty constructor
Create (shape : Shape from TopoDS;
tolerance : Real;
splitclosed: Boolean = Standard_False;
splitopen : Boolean = Standard_False)
returns FreeBoundsProperties from ShapeAnalysis;
---Purpose: Creates the object and calls corresponding Init.
-- <shape> should be a compound of faces.
Create (shape : Shape from TopoDS;
splitclosed: Boolean = Standard_False;
splitopen : Boolean = Standard_False);
---Purpose: Creates the object and calls corresponding Init.
-- <shape> should be a compound of shells.
Init (me: in out; shape : Shape from TopoDS;
tolerance : Real;
splitclosed: Boolean = Standard_False;
splitopen : Boolean = Standard_False);
---Purpose: Initializes the object with given parameters.
-- <shape> should be a compound of faces.
Init (me: in out; shape : Shape from TopoDS;
splitclosed: Boolean = Standard_False;
splitopen : Boolean = Standard_False);
---Purpose: Initializes the object with given parameters.
-- <shape> should be a compound of shells.
---Level: Public
Perform (me: in out) returns Boolean;
---Purpose: Builds and analyzes free bounds of the shape.
-- First calls ShapeAnalysis_FreeBounds for building free
-- bounds.
-- Then on each free bound computes its properties:
-- - area of the contour,
-- - perimeter of the contour,
-- - ratio of average length to average width of the contour,
-- - average width of contour,
-- - notches on the contour and for each notch
-- - maximum width of the notch.
---Returns: True - if no fails and free bounds are found,
-- False - if fail or no free bounds are found
IsLoaded (me) returns Boolean;
---Purpose: Returns True if shape is loaded
---C++: inline
Shape (me) returns Shape from TopoDS;
---Purpose: Returns shape
---C++: inline
Tolerance (me) returns Real;
---Purpose: Returns tolerance
---C++: inline
NbFreeBounds (me) returns Integer;
---Purpose: Returns number of free bounds
---C++: inline
NbClosedFreeBounds (me) returns Integer;
---Purpose: Returns number of closed free bounds
---C++: inline
NbOpenFreeBounds (me) returns Integer;
---Purpose: Returns number of open free bounds
---C++: inline
ClosedFreeBounds (me) returns HSequenceOfFreeBounds from ShapeAnalysis;
---Purpose: Returns all closed free bounds
---C++: inline
OpenFreeBounds (me) returns HSequenceOfFreeBounds from ShapeAnalysis;
---Purpose: Returns all open free bounds
---C++: inline
ClosedFreeBound (me; index: Integer) returns FreeBoundData from ShapeAnalysis;
---Purpose: Returns properties of closed free bound specified by its rank
-- number
---C++: inline
OpenFreeBound (me; index: Integer) returns FreeBoundData from ShapeAnalysis;
---Purpose: Returns properties of open free bound specified by its rank
-- number
---C++: inline
---Level: Internal
DispatchBounds (me: in out) returns Boolean;
CheckContours (me: in out; prec: Real = 0.0) returns Boolean;
CheckNotches (me: in out; prec: Real = 0.0) returns Boolean;
CheckNotches(me: in out; fbData: in out FreeBoundData from ShapeAnalysis;
prec : Real = 0.0)
returns Boolean;
CheckNotches(me: in out; freebound: Wire from TopoDS;
num : Integer;
notch : out Wire from TopoDS;
distMax : out Real;
prec : Real = 0.0)
returns Boolean;
FillProperties (me: in out; fbData: in out FreeBoundData from ShapeAnalysis;
prec : Real = 0.0)
returns Boolean;
fields
myShape : Shape from TopoDS;
myTolerance : Real;
mySplitClosed : Boolean;
mySplitOpen : Boolean;
myClosedFreeBounds: HSequenceOfFreeBounds from ShapeAnalysis;
myOpenFreeBounds : HSequenceOfFreeBounds from ShapeAnalysis;
end FreeBoundsProperties;
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