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-- File: BRep.cdl
-- Created: Thu Jun 27 15:41:11 1991
-- Author: Remi LEQUETTE
-- <rle@phobox>
---Copyright: Matra Datavision 1991, 1992
package BRep
---Purpose: This package describes a Boundary Representation
-- Data Structure inherited from the abstract
-- Topology defined in the TopoDS package. The
-- geometric data are provided by the Geom and Geom2d
-- packages.
--
-- The TVertex, TEdge, and TFace are redefined in
-- this package to add geometric information.
---Level : Public
-- All methods of all classes will be public.
uses
MMgt, -- Memory management
TCollection, -- Basic data structures
TColStd, -- HArray1OfInteger
gp, -- Elementary geometry
Bnd, -- Bounding boxes
TopLoc, -- Local coordinate systems
TopAbs, -- Enumerations : Orientation, ShapeType
TopoDS, -- Abstract topological data structure
GeomAbs, -- Enumerations : Shape
Geom, -- 3D geometry : curves and surfaces
Geom2d, -- 2D geometry : curves in parametric space
Poly -- Triangulations and Polygons
is
--
-- Face
--
class TFace;
---Purpose: The TFace class is inherited from the TFace from
-- TopoDS. It contains a surface, a tolerance and a
-- natural restriction flag.
--
-- Edge
--
-- An Edge is defined by a list of curve representations which
-- are either :
--
-- Geometric representations :
--
-- * A 3d curve (at most one)
--
-- * A curve on surface, curve in parametric space.
--
-- * A curve on closed surface, two curves in parametric space.
--
-- Polygonal representations :
--
-- * A 3d polygon (at most one).
--
-- * A Polygon on triangulation (array of node indices)
--
-- * A Polygon on closed triangulation (2 arrays of node indices)
--
-- * A polygon on surface (array of 2d points in parametric space)
--
-- Curve on 2 surfaces :
--
-- * This is used for storing shape continuity.
--
deferred class CurveRepresentation;
---Purpose: Root for curve representations. Contains a
-- location.
class ListOfCurveRepresentation instantiates
List from TCollection (CurveRepresentation from BRep);
deferred class GCurve;
---Purpose: Root class for geometric curves representations.
-- Contains a first an a last parameter.
class Curve3D;
---Purpose: Representation by a 3d curve.
class CurveOnSurface;
---Purpose: Representation by a curve in the parametric space
-- of a surface.
class CurveOnClosedSurface;
---Purpose: Representation by two curves in the parametric
-- space of a closed surface.
class Polygon3D;
---Purpose: Representation by a 3D polygon.
class PolygonOnTriangulation;
---Purpose: Representation by an array of indices on a
-- triangulation.
class PolygonOnClosedTriangulation;
---Purpose: Representation by two arrays of indices on a
-- triangulation.
class PolygonOnSurface;
---Purpose: Representation by 2d polygon in the parametric space
-- of a surface.
class PolygonOnClosedSurface;
---Purpose: Representation by two 2d polygons in the parametric
-- space of the surface.
class CurveOn2Surfaces;
---Purpose: Geometric continuity bewtween two surfaces.
class TEdge;
---Purpose: The TEdge class is inherited from the TEdge from
-- TopoDS. It contains a 3d curve and a list of
-- representations.
--
-- Vertex
--
deferred class PointRepresentation;
---Purpose: Root for point representations. Contains a
-- location.
class ListOfPointRepresentation instantiates
List from TCollection (PointRepresentation from BRep);
class PointOnCurve;
---Purpose: Representation by a parameter on a 3D curve.
deferred class PointsOnSurface;
---Purpose: Root for points on surface.
class PointOnCurveOnSurface;
---Purpose: Representation by a parameter on a curve on a
-- surface.
class PointOnSurface;
---Purpose: Representation by two parameters on a surface.
class TVertex;
---Purpose: The TVertex class is inherited from the TVertex
-- from TopoDS. It contains a 3d point and a
-- location.
class Builder;
---Purpose: The Builder from BRep is inherited from the
-- Builder3D from TopoDS. It is used to build
-- Shapes.
class Tool;
---Purpose: The Tool from BRep is used to access the geometric
-- data.
end BRep;
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