mirror of
https://github.com/Open-Cascade-SAS/OCCT.git
synced 2026-06-17 05:37:45 +08:00
d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
128 lines
4.1 KiB
Plaintext
128 lines
4.1 KiB
Plaintext
-- Created on: 1998-03-04
|
|
-- Created by: Roman BORISOV
|
|
-- Copyright (c) 1998-1999 Matra Datavision
|
|
-- Copyright (c) 1999-2014 OPEN CASCADE SAS
|
|
--
|
|
-- This file is part of Open CASCADE Technology software library.
|
|
--
|
|
-- This library is free software; you can redistribute it and/or modify it under
|
|
-- the terms of the GNU Lesser General Public License version 2.1 as published
|
|
-- by the Free Software Foundation, with special exception defined in the file
|
|
-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
-- distribution for complete text of the license and disclaimer of any warranty.
|
|
--
|
|
-- Alternatively, this file may be used under the terms of Open CASCADE
|
|
-- commercial license or contractual agreement.
|
|
|
|
class Darboux from GeomFill
|
|
inherits TrihedronLaw from GeomFill
|
|
|
|
---Purpose: Defines Darboux case of Frenet Trihedron Law
|
|
|
|
uses
|
|
|
|
HSurface from Adaptor3d,
|
|
Shape from GeomAbs,
|
|
Array1OfReal from TColStd,
|
|
Vec from gp,
|
|
HArray1OfReal from TColStd,
|
|
CurveOnSurface from Adaptor3d
|
|
|
|
raises
|
|
OutOfRange, ConstructionError
|
|
|
|
is
|
|
Create
|
|
returns Darboux from GeomFill
|
|
raises ConstructionError;
|
|
|
|
Copy(me)
|
|
returns TrihedronLaw from GeomFill
|
|
is redefined;
|
|
|
|
--
|
|
--
|
|
--========== To compute Location and derivatives Location
|
|
--
|
|
D0(me : mutable;
|
|
Param: Real;
|
|
Tangent : out Vec from gp;
|
|
Normal : out Vec from gp;
|
|
BiNormal : out Vec from gp)
|
|
---Purpose: compute Triedrhon on curve at parameter <Param>
|
|
returns Boolean is redefined;
|
|
|
|
D1(me : mutable;
|
|
Param: Real;
|
|
Tangent : out Vec from gp;
|
|
DTangent : out Vec from gp;
|
|
Normal : out Vec from gp;
|
|
DNormal : out Vec from gp;
|
|
BiNormal : out Vec from gp;
|
|
DBiNormal : out Vec from gp)
|
|
---Purpose: compute Triedrhon and derivative Trihedron on curve
|
|
-- at parameter <Param>
|
|
-- Warning : It used only for C1 or C2 aproximation
|
|
returns Boolean
|
|
is redefined;
|
|
|
|
D2(me : mutable;
|
|
Param: Real;
|
|
Tangent : out Vec from gp;
|
|
DTangent : out Vec from gp;
|
|
D2Tangent : out Vec from gp;
|
|
Normal : out Vec from gp;
|
|
DNormal : out Vec from gp;
|
|
D2Normal : out Vec from gp;
|
|
BiNormal : out Vec from gp;
|
|
DBiNormal : out Vec from gp;
|
|
D2BiNormal : out Vec from gp)
|
|
---Purpose: compute Trihedron on curve
|
|
-- first and seconde derivatives.
|
|
-- Warning : It used only for C2 aproximation
|
|
returns Boolean
|
|
is redefined;
|
|
--
|
|
-- =================== Management of continuity ===================
|
|
--
|
|
NbIntervals(me; S : Shape from GeomAbs)
|
|
---Purpose: Returns the number of intervals for continuity
|
|
-- <S>.
|
|
-- May be one if Continuity(me) >= <S>
|
|
returns Integer is redefined;
|
|
|
|
Intervals(me; T : in out Array1OfReal from TColStd;
|
|
S : Shape from GeomAbs)
|
|
---Purpose: Stores in <T> the parameters bounding the intervals
|
|
-- of continuity <S>.
|
|
--
|
|
-- The array must provide enough room to accomodate
|
|
-- for the parameters. i.e. T.Length() > NbIntervals()
|
|
raises
|
|
OutOfRange from Standard
|
|
is redefined;
|
|
|
|
|
|
-- =================== To help computation of Tolerance ===============
|
|
GetAverageLaw(me : mutable;
|
|
ATangent : out Vec from gp;
|
|
ANormal : out Vec from gp;
|
|
ABiNormal : out Vec from gp)
|
|
---Purpose: Get average value of Tangent(t) and Normal(t) it is usfull to
|
|
-- make fast approximation of rational surfaces.
|
|
is redefined;
|
|
|
|
-- =================== To help Particular case ===============
|
|
|
|
IsConstant(me)
|
|
---Purpose: Say if the law is Constant.
|
|
returns Boolean
|
|
is redefined;
|
|
|
|
IsOnlyBy3dCurve(me)
|
|
---Purpose: Return False.
|
|
returns Boolean
|
|
is redefined;
|
|
|
|
end Darboux;
|