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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
60 lines
2.5 KiB
C++
60 lines
2.5 KiB
C++
// Created on: 1993-02-22
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// Created by: Modelistation
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// Copyright (c) 1993-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _GeomAbs_Shape_HeaderFile
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#define _GeomAbs_Shape_HeaderFile
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//! Provides information about the continuity of a curve:
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//! - C0: only geometric continuity.
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//! - G1: for each point on the curve, the tangent vectors
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//! "on the right" and "on the left" are collinear with the same orientation.
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//! - C1: continuity of the first derivative. The "C1" curve is
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//! also "G1" but, in addition, the tangent vectors " on the
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//! right" and "on the left" are equal.
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//! - G2: for each point on the curve, the normalized
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//! normal vectors "on the right" and "on the left" are equal.
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//! - C2: continuity of the second derivative.
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//! - C3: continuity of the third derivative.
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//! - CN: continuity of the N-th derivative, whatever is the
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//! value given for N (infinite order of continuity).
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//! Also provides information about the continuity of a surface:
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//! - C0: only geometric continuity.
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//! - C1: continuity of the first derivatives; any
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//! isoparametric (in U or V) of a surface "C1" is also "C1".
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//! - G2: for BSpline curves only; "on the right" and "on the
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//! left" of a knot the computation of the "main curvature
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//! radii" and the "main directions" (when they exist) gives the same result.
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//! - C2: continuity of the second derivative.
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//! - C3: continuity of the third derivative.
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//! - CN: continuity of any N-th derivative, whatever is the
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//! value given for N (infinite order of continuity).
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//! We may also say that a surface is "Ci" in u, and "Cj" in v
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//! to indicate the continuity of its derivatives up to the order
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//! i in the u parametric direction, and j in the v parametric direction.
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enum GeomAbs_Shape
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{
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GeomAbs_C0,
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GeomAbs_G1,
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GeomAbs_C1,
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GeomAbs_G2,
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GeomAbs_C2,
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GeomAbs_C3,
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GeomAbs_CN
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};
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#endif // _GeomAbs_Shape_HeaderFile
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