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-- File: BRepBuilderAPI_MakeShell.cdl
-- Created: Wed Feb 16 16:56:46 1994
-- Author: Remi LEQUETTE
-- <rle@zerox>
-- xab:19Nov96 correction de doc
---Copyright: Matra Datavision 1994
class MakeShell from BRepBuilderAPI inherits MakeShape from BRepBuilderAPI
---Purpose: Describes functions to build a
-- shape corresponding to the skin of a surface.
-- Note that the term shell in the class name has the same definition
-- as that of a shell in STEP, in other words the skin of a shape,
-- and not a solid model defined by surface and thickness. If you want
-- to build the second sort of shell, you must use
-- BRepOffsetAPI_MakeOffsetShape. A shell is made of a series of
-- faces connected by their common edges.
-- If the underlying surface of a face is not C2 continuous and
-- the flag Segment is True, MakeShell breaks the surface down into
-- several faces which are all C2 continuous and which are
-- connected along the non-regular curves on the surface.
-- The resulting shell contains all these faces.
-- Construction of a Shell from a non-C2 continuous Surface
-- A MakeShell object provides a framework for:
-- - defining the construction of a shell,
-- - implementing the construction algorithm, and
-- - consulting the result.
-- Warning
-- The connected C2 faces in the shell resulting from a decomposition of
-- the surface are not sewn. For a sewn result, you need to use
-- BRepOffsetAPI_Sewing. For a shell with thickness, you need to use
-- BRepOffsetAPI_MakeOffsetShape.
uses
Surface from Geom,
Shell from TopoDS,
Face from TopoDS,
ShellError from BRepBuilderAPI,
MakeShell from BRepLib
raises
NotDone from StdFail
is
Create
---Purpose: Constructs an empty shell framework. The Init
-- function is used to define the construction arguments.
-- Warning
-- The function Error will return
-- BRepBuilderAPI_EmptyShell if it is called before the function Init.
returns MakeShell from BRepBuilderAPI;
----------------------------------------------
-- From a set of face
----------------------------------------------
----------------------------------------------
-- From a surface
----------------------------------------------
Create(S : Surface from Geom;
Segment : Boolean from Standard = Standard_False)
---Purpose: Constructs a shell from the surface S.
returns MakeShell from BRepBuilderAPI;
Create(S : Surface from Geom; UMin, UMax, VMin, VMax : Real;
Segment : Boolean from Standard = Standard_False)
---Purpose: Constructs a shell from the surface S,
-- limited in the u parametric direction by the two
-- parameter values UMin and UMax, and limited in the v
-- parametric direction by the two parameter values VMin and VMax.
returns MakeShell from BRepBuilderAPI;
Init(me : in out; S : Surface from Geom; UMin, UMax, VMin, VMax : Real;
Segment : Boolean from Standard = Standard_False)
---Purpose: Defines or redefines the arguments
-- for the construction of a shell. The construction is initialized
-- with the surface S, limited in the u parametric direction by the
-- two parameter values UMin and UMax, and in the v parametric
-- direction by the two parameter values VMin and VMax.
-- Warning
-- The function Error returns:
-- - BRepBuilderAPI_ShellParametersOutOfRange
-- when the given parameters are outside the bounds of the
-- surface or the basis surface if S is trimmed
is static;
----------------------------------------------
-- Results
----------------------------------------------
IsDone(me) returns Boolean
---Purpose: Returns true if the shell is built.
is redefined;
Error(me) returns ShellError from BRepBuilderAPI
---Purpose: Returns the construction status:
-- - BRepBuilderAPI_ShellDone if the shell is built, or
-- - another value of the BRepBuilderAPI_ShellError
-- enumeration indicating why the construction failed.
-- This is frequently BRepBuilderAPI_ShellParametersOutOfRange
-- indicating that the given parameters are outside the bounds of the surface.
is static;
Shell(me) returns Shell from TopoDS
---Purpose: Returns the new Shell.
--
---C++: return const &
---C++: alias "Standard_EXPORT operator TopoDS_Shell() const;"
---Level: Public
raises
NotDone from StdFail
is static;
fields
myMakeShell : MakeShell from BRepLib;
end MakeShell;
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