0024023: Revamp the OCCT Handle -- general
[occt.git] / src / Geom / Geom_BoundedSurface.cdl
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b311480e 1-- Created on: 1993-03-10
2-- Created by: Philippe DAUTRY
3-- Copyright (c) 1993-1999 Matra Datavision
973c2be1 4-- Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5--
973c2be1 6-- This file is part of Open CASCADE Technology software library.
b311480e 7--
d5f74e42 8-- This library is free software; you can redistribute it and/or modify it under
9-- the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10-- by the Free Software Foundation, with special exception defined in the file
11-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12-- distribution for complete text of the license and disclaimer of any warranty.
b311480e 13--
973c2be1 14-- Alternatively, this file may be used under the terms of Open CASCADE
15-- commercial license or contractual agreement.
7fd59977 16
17deferred class BoundedSurface from Geom inherits Surface from Geom
18
19
20 ---Purpose : The root class for bounded surfaces in 3D space. A
21 -- bounded surface is defined by a rectangle in its 2D parametric space, i.e.
22 -- - its u parameter, which ranges between two finite
23 -- values u0 and u1, referred to as "First u
24 -- parameter" and "Last u parameter" respectively, and
25 -- - its v parameter, which ranges between two finite
26 -- values v0 and v1, referred to as "First v
27 -- parameter" and the "Last v parameter" respectively.
28 -- The surface is limited by four curves which are the
29 -- boundaries of the surface:
30 -- - its u0 and u1 isoparametric curves in the u parametric direction, and
31 -- - its v0 and v1 isoparametric curves in the v parametric direction.
32 -- A bounded surface is finite.
33 -- The common behavior of all bounded surfaces is
34 -- described by the Geom_Surface class.
35 -- The Geom package provides three concrete
36 -- implementations of bounded surfaces:
37 -- - Geom_BezierSurface,
38 -- - Geom_BSplineSurface, and
39 -- - Geom_RectangularTrimmedSurface.
40 -- The first two of these implement well known
41 -- mathematical definitions of complex surfaces, the third
42 -- trims a surface using four isoparametric curves, i.e. it
43 -- limits the variation of its parameters to a rectangle in
44 -- 2D parametric space.
45
46is
47
48
49end;
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