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59 lines
2.5 KiB
Plaintext
Executable File
59 lines
2.5 KiB
Plaintext
Executable File
-- Created on: 1993-03-10
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-- Created by: Philippe DAUTRY
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-- Copyright (c) 1993-1999 Matra Datavision
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-- Copyright (c) 1999-2012 OPEN CASCADE SAS
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--
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-- The content of this file is subject to the Open CASCADE Technology Public
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-- License Version 6.5 (the "License"). You may not use the content of this file
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-- except in compliance with the License. Please obtain a copy of the License
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-- at http://www.opencascade.org and read it completely before using this file.
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--
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-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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--
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-- The Original Code and all software distributed under the License is
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-- distributed on an "AS IS" basis, without warranty of any kind, and the
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-- Initial Developer hereby disclaims all such warranties, including without
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-- limitation, any warranties of merchantability, fitness for a particular
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-- purpose or non-infringement. Please see the License for the specific terms
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-- and conditions governing the rights and limitations under the License.
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deferred class BoundedSurface from Geom inherits Surface from Geom
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---Purpose : The root class for bounded surfaces in 3D space. A
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-- bounded surface is defined by a rectangle in its 2D parametric space, i.e.
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-- - its u parameter, which ranges between two finite
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-- values u0 and u1, referred to as "First u
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-- parameter" and "Last u parameter" respectively, and
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-- - its v parameter, which ranges between two finite
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-- values v0 and v1, referred to as "First v
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-- parameter" and the "Last v parameter" respectively.
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-- The surface is limited by four curves which are the
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-- boundaries of the surface:
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-- - its u0 and u1 isoparametric curves in the u parametric direction, and
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-- - its v0 and v1 isoparametric curves in the v parametric direction.
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-- A bounded surface is finite.
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-- The common behavior of all bounded surfaces is
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-- described by the Geom_Surface class.
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-- The Geom package provides three concrete
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-- implementations of bounded surfaces:
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-- - Geom_BezierSurface,
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-- - Geom_BSplineSurface, and
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-- - Geom_RectangularTrimmedSurface.
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-- The first two of these implement well known
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-- mathematical definitions of complex surfaces, the third
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-- trims a surface using four isoparametric curves, i.e. it
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-- limits the variation of its parameters to a rectangle in
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-- 2D parametric space.
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is
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end;
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