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-- File: ShapeAnalysis.cdl
-- Created: Wed Jun 3 11:59:35 1998
-- Author: data exchange team
-- <det@nnov.matra-dtv.fr>
---Copyright: Matra Datavision 1998
package ShapeAnalysis
---Purpose: This package is intended to analyze geometrical objects
-- and topological shapes. Analysis domain includes both
-- exploring geometrical and topological properties of
-- shapes and checking their conformance to Open CASCADE requirements.
-- The directions of analysis provided by tools of this package are:
-- computing quantities of subshapes,
-- computing parameters of points on curve and surface,
-- computing surface singularities,
-- checking edge and wire consistency,
-- checking edges order in the wire,
-- checking face bounds orientation,
-- checking small faces,
-- analyzing shape tolerances,
-- analyzing of free bounds of the shape.
uses
gp,
TColStd,
TCollection,
TColgp,
Bnd,
Geom,
Geom2d,
GeomAdaptor,
Extrema,
IntRes2d,
TopAbs,
TopLoc,
TopoDS,
TopTools,
ShapeExtend,
Adaptor3d
is
class Geom;
---Purpose: Basic analysis on geometry
class Curve;
---Purpose: Analysis on 2d and 3d curve (projecting points)
class Surface;
---Purpose: Analysis on surface (computing singularities)
class Edge;
---Purpose: Analysis on edge (geometrical and topological querying,
-- curves consistency, etc.)
class Wire;
---Purpose: Comprehensive alysis of the wire lying on the face or surface
class WireOrder;
---Purpose: Analysis of the edges order in the wire
class WireVertex;
---Purpose: Analysis of the vertex in context of the wire
class CheckSmallFace;
---Purpose: Analysis of the face size
class Shell;
---Purpose: Checking orientation in the shell
class ShapeTolerance;
---Purpose: Calculating shape tolerances
--class OverlapEdges; now it is in package OverlapShape of Products
---Purpose: Container for keeping information about
-- overlapping edges
--class CheckCoincidenceTool; now it is in package OverlapShape of Products
---Purpose: Tool for checking coincidence of faces and edges
-- Class intended for analyzing shape contents
class ShapeContents;
---Purpose: Dumps shape contents
-- Classes intended for free bounds analysis
class FreeBounds;
---Purpose: Constructing free bounds of the shape
class FreeBoundData;
---Purpose: Data structure for storing free bound
class FreeBoundsProperties;
---Purpose: Analysis of properties of free bounds
class TransferParameters;
---Purpose: Transfers parameters between curve 3d of edge and its pcurves
class TransferParametersProj;
---Purpose: Transfers parameters between curve 3d of edge and its
-- pcurves. This algorithm uses projection for not
-- sameparameter edges.
class SequenceOfFreeBounds instantiates
Sequence from TCollection (FreeBoundData from ShapeAnalysis);
class HSequenceOfFreeBounds instantiates
HSequence from TCollection (FreeBoundData from ShapeAnalysis,
SequenceOfFreeBounds from ShapeAnalysis);
class DataMapOfShapeListOfReal instantiates
DataMap from TCollection(Shape from TopoDS,
ListOfReal from TColStd,
ShapeMapHasher from TopTools);
--class SequenceOfOverlapEdges instantiates
--Sequence from TCollection (OverlapEdges from ShapeAnalysis);
-- now it is in package OverlapShape of Products
--class IndexedDataMapOfShapeSequenceOfOverlapEdges instantiates
--IndexedDataMap from TCollection(Shape from TopoDS,
--SequenceOfOverlapEdges from ShapeAnalysis,
--ShapeMapHasher from TopTools);
-- now it is in package OverlapShape of Products
OuterWire (face: Face from TopoDS) returns Wire from TopoDS;
---Purpose: Returns the outer wire on the face <Face>.
-- This is replacement of the method BRepTools::OuterWire
-- until it works badly.
-- Returns the first wire oriented as outer according to
-- FClass2d_Classifier. If none, last wire is returned.
TotCross2D(sewd: WireData from ShapeExtend; aFace: Face from TopoDS)
returns Real;
---Purpose: Returns a total area of 2d wire
ContourArea(theWire : Wire from TopoDS) returns Real;
--sewd: WireData from ShapeExtend) returns Real;
---Purpose: Returns a total area of 3d wire
IsOuterBound (face: Face from TopoDS) returns Boolean;
---Purpose: Returns True if <F> has outer bound.
---Remarks: This method checks only presence of outer bound, it does not
-- check mutual orientation of the bounds on a face
AdjustByPeriod(Val: Real; ToVal: Real; Period: Real)
returns Real;
---Purpose: Returns a shift required to move point
-- <Val> to the range [ToVal-Period/2,ToVal+Period/2].
-- This shift will be the divisible by Period.
-- Intended for adjusting parameters on periodic surfaces.
AdjustToPeriod(Val: Real; ValMin: Real; ValMax: Real)
returns Real;
---Purpose: Returns a shift required to move point
-- <Val> to the range [ValMin,ValMax].
-- This shift will be the divisible by Period
-- with Period = ValMax - ValMin.
-- Intended for adjusting parameters on periodic surfaces.
FindBounds (shape: Shape from TopoDS;
V1 : in out Vertex from TopoDS;
V2 : in out Vertex from TopoDS);
---Purpose: Finds the start and end vertices of the shape
-- Shape can be of the following type:
-- vertex: V1 and V2 are the same and equal to <shape>,
-- edge : V1 is start and V2 is end vertex (see ShapeAnalysis_Edge
-- methods FirstVertex and LastVertex),
-- wire : V1 is start vertex of the first edge, V2 is end vertex
-- of the last edge (also see ShapeAnalysis_Edge).
-- If wire contains no edges V1 and V2 are nullified
-- If none of the above V1 and V2 are nullified
---Remark: V1 and V2 can be of any orientation
GetFaceUVBounds(F: Face from TopoDS; Umin, Umax, Vmin, Vmax: out Real);
---Purpose: Computes exact UV bounds of all wires on the face
end ShapeAnalysis;
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