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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.
225 lines
7.2 KiB
Plaintext
225 lines
7.2 KiB
Plaintext
-- Created on: 1991-03-26
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-- Created by: Michel CHAUVAT
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-- Copyright (c) 1991-1999 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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generic class SLProps from LProp (Surface as any;
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Tool as any) -- as ToolSurface(Surface)
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---Purpose: Computation of Surface Local Properties:
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-- - point,
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-- - derivatives,
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-- - tangents,
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-- - normal,
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-- - tangent plane,
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-- - principal curvatures and their associated direction,
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-- - mean curvature,
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-- - Gaussian curvature.
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uses Dir from gp,
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Pnt from gp,
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Vec from gp,
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Status from LProp
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raises BadContinuity, DomainError, OutOfRange, NotDefined
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is
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Create(S: Surface; U, V: Real; N: Integer; Resolution: Real)
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---Purpose: Initializes the local properties of the surface <S>
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-- for the parameter values (<U>, <V>).
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-- The current point and the derivatives are
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-- computed at the same time, which allows an
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-- optimization of the computation time.
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-- <N> indicates the maximum number of derivations to
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-- be done (0, 1, or 2). For example, to compute
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-- only the tangent, N should be equal to 1.
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-- <Resolution> is the linear tolerance (it is used to test
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-- if a vector is null).
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returns SLProps
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raises OutOfRange;
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-- if N < 0 or N > 2.
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Create(S: Surface; N: Integer; Resolution: Real)
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---Purpose: idem as previous constructor but without setting the value
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-- of parameters <U> and <V>.
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returns SLProps
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raises OutOfRange;
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-- if N < 0 or N > 2.
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Create( N: Integer; Resolution: Real)
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---Purpose: idem as previous constructor but without setting the value
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-- of parameters <U> and <V> and the surface.
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-- the surface can have an empty constructor.
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returns SLProps
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raises OutOfRange;
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-- if N < 0 or N > 2.
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SetSurface(me : in out;S : Surface)
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---Purpose: Initializes the local properties of the surface S
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-- for the new surface.
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is static;
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SetParameters(me: in out; U, V : Real)
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---Purpose: Initializes the local properties of the surface S
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-- for the new parameter values (<U>, <V>).
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is static;
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Value(me) returns Pnt
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---Purpose: Returns the point.
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---C++: return const &
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is static;
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D1U(me: in out) returns Vec is static;
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---Purpose: Returns the first U derivative.
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-- The derivative is computed if it has not been yet.
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---C++: return const &
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D1V(me: in out) returns Vec is static;
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---Purpose: Returns the first V derivative.
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-- The derivative is computed if it has not been yet.
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---C++: return const &
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D2U(me: in out) returns Vec is static;
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---Purpose: Returns the second U derivatives
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-- The derivative is computed if it has not been yet.
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---C++: return const &
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D2V(me: in out) returns Vec is static;
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---Purpose: Returns the second V derivative.
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-- The derivative is computed if it has not been yet.
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---C++: return const &
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DUV(me: in out) returns Vec is static;
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---Purpose: Returns the second UV cross-derivative.
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-- The derivative is computed if it has not been yet.
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---C++: return const &
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IsTangentUDefined(me: in out) returns Boolean is static;
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---Purpose: returns True if the U tangent is defined.
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-- For example, the tangent is not defined if the
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-- two first U derivatives are null.
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TangentU(me: in out; D : out Dir)
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---Purpose: Returns the tangent direction <D> on the iso-V.
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raises NotDefined
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-- if IsTangentUDefined() == False.
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is static;
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IsTangentVDefined(me: in out) returns Boolean is static;
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---Purpose: returns if the V tangent is defined.
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-- For example, the tangent is not defined if the
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-- two first V derivatives are null.
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TangentV(me: in out; D : out Dir)
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---Purpose: Returns the tangent direction <D> on the iso-V.
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raises NotDefined
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-- if IsTangentVDefined() == False.
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is static;
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IsNormalDefined(me: in out) returns Boolean is static;
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---Purpose: Tells if the normal is defined.
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Normal(me: in out) returns Dir
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---Purpose: Returns the normal direction.
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---C++: return const &
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raises NotDefined
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-- if IsNormalDefined() == False
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is static;
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IsCurvatureDefined(me: in out)
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---Purpose: returns True if the curvature is defined.
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returns Boolean
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raises BadContinuity
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-- if the surface is not C2.
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is static;
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IsUmbilic(me: in out)
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---Purpose: returns True if the point is umbilic (i.e. if the
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-- curvature is constant).
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returns Boolean
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raises NotDefined
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-- if IsCurvatureDefined() == False
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is static;
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MaxCurvature(me : in out)
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---Purpose: Returns the maximum curvature
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returns Real
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raises NotDefined
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-- if IsCurvatureDefined() == False.
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is static;
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MinCurvature(me : in out)
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---Purpose: Returns the minimum curvature
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returns Real
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raises NotDefined
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-- if IsCurvatureDefined() == False.
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is static;
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CurvatureDirections(me: in out; MaxD, MinD : out Dir)
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---Purpose: Returns the direction of the maximum and minimum curvature
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-- <MaxD> and <MinD>
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raises NotDefined
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-- if IsCurvatureDefined() == False
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-- or IsUmbilic() == True.
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is static;
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MeanCurvature(me: in out)
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---Purpose: Returns the mean curvature.
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returns Real
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raises NotDefined
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-- if IsCurvatureDefined() == False.
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is static;
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GaussianCurvature(me: in out)
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---Purpose: Returns the Gaussian curvature
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returns Real
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raises NotDefined
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-- if IsCurvatureDefined() == False.
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is static;
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fields
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mySurf : Surface;
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myU : Real;
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myV : Real;
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myDerOrder : Integer;
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myCN : Integer;
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myLinTol : Real;
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myPnt : Pnt from gp;
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myD1u : Vec from gp;
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myD1v : Vec from gp;
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myD2u : Vec from gp;
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myD2v : Vec from gp;
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myDuv : Vec from gp;
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myNormal : Dir from gp;
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myMinCurv : Real;
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myMaxCurv : Real;
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myDirMinCurv : Dir from gp;
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myDirMaxCurv : Dir from gp;
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myMeanCurv : Real;
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myGausCurv : Real;
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mySignificantFirstDerivativeOrderU : Integer;
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mySignificantFirstDerivativeOrderV : Integer;
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myUTangentStatus : Status from LProp;
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myVTangentStatus : Status from LProp;
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myNormalStatus : Status from LProp;
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myCurvatureStatus : Status from LProp;
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end SLProps;
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