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6e33d3ced2
Redundant keyword 'mutable' removed in CDL files. In IGESConvGeom_GeomBuilder, unused methods MakeXY() and MakeXYZ() removed. Method StepAP214_AutoDesignGroupAssignment::Init() replicating same method of the base class is removed as it causes CDL extraction error after above (seemingly irrelevant) changes.
303 lines
12 KiB
Plaintext
303 lines
12 KiB
Plaintext
-- Created on: 1993-03-10
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-- Created by: JCV
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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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class SurfaceOfLinearExtrusion from Geom inherits SweptSurface from Geom
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--- Purpose : Describes a surface of linear extrusion ("extruded
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-- surface"), e.g. a generalized cylinder. Such a surface
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-- is obtained by sweeping a curve (called the "extruded
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-- curve" or "basis") in a given direction (referred to as
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-- the "direction of extrusion" and defined by a unit vector).
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-- The u parameter is along the extruded curve. The v
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-- parameter is along the direction of extrusion.
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-- The parameter range for the u parameter is defined
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-- by the reference curve.
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-- The parameter range for the v parameter is ] -
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-- infinity, + infinity [.
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-- The position of the curve gives the origin of the v parameter.
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-- The surface is "CN" in the v parametric direction.
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-- The form of a surface of linear extrusion is generally a
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-- ruled surface (GeomAbs_RuledForm). It can be:
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-- - a cylindrical surface, if the extruded curve is a circle,
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-- or a trimmed circle, with an axis parallel to the
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-- direction of extrusion (GeomAbs_CylindricalForm), or
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-- - a planar surface, if the extruded curve is a line
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-- (GeomAbs_PlanarForm).
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-- Note: The surface of extrusion is built from a copy of
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-- the original basis curve, so the original curve is not
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-- modified when the surface is modified.
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-- Warning
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-- Degenerate surfaces are not detected. A degenerate
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-- surface is obtained, for example, when the extruded
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-- curve is a line and the direction of extrusion is parallel
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-- to that line.
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uses Ax1 from gp,
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Ax2 from gp,
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Dir from gp,
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Pnt from gp,
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Trsf from gp,
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GTrsf2d from gp,
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Vec from gp,
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Curve from Geom,
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Geometry from Geom,
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BSplineCurve from Geom,
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Shape from GeomAbs,
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CurveType from GeomAbs
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raises RangeError from Standard,
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UndefinedDerivative from Geom
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is
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Create (C : Curve; V : Dir) returns SurfaceOfLinearExtrusion;
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--- Purpose :
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-- V is the direction of extrusion.
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-- C is the extruded curve.
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-- The form of a SurfaceOfLinearExtrusion can be :
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-- . ruled surface (RuledForm),
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-- . a cylindrical surface if the extruded curve is a circle or
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-- a trimmed circle (CylindricalForm),
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-- . a plane surface if the extruded curve is a Line (PlanarForm).
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-- Warnings :
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-- Degenerated surface cases are not detected. For example if the
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-- curve C is a line and V is parallel to the direction of this
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-- line.
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SetDirection (me : mutable; V : Dir);
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--- Purpose : Assigns V as the "direction of extrusion" for this
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-- surface of linear extrusion.
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SetBasisCurve (me : mutable; C : Curve);
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--- Purpose : Modifies this surface of linear extrusion by redefining
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-- its "basis curve" (the "extruded curve").
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UReverse (me : mutable);
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--- Purpose : Changes the orientation of this surface of linear
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-- extrusion in the u parametric direction. The
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-- bounds of the surface are not changed, but the given
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-- parametric direction is reversed. Hence the
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-- orientation of the surface is reversed.
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-- In the case of a surface of linear extrusion:
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-- - UReverse reverses the basis curve, and
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-- - VReverse reverses the direction of linear extrusion.
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UReversedParameter (me; U : Real) returns Real;
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---Purpose: Computes the u parameter on the modified
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-- surface, produced by reversing its u parametric
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-- direction, for any point of u parameter U on this surface of linear extrusion.
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-- In the case of an extruded surface:
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-- - UReverseParameter returns the reversed
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-- parameter given by the function
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-- ReversedParameter called with U on the basis curve,
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VReverse (me : mutable);
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--- Purpose : Changes the orientation of this surface of linear
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-- extrusion in the v parametric direction. The
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-- bounds of the surface are not changed, but the given
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-- parametric direction is reversed. Hence the
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-- orientation of the surface is reversed.
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-- In the case of a surface of linear extrusion:
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-- - UReverse reverses the basis curve, and
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-- - VReverse reverses the direction of linear extrusion.
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VReversedParameter (me; V : Real) returns Real;
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---Purpose: Computes the v parameter on the modified
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-- surface, produced by reversing its u v parametric
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-- direction, for any point of v parameter V on this surface of linear extrusion.
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-- In the case of an extruded surface VReverse returns -V.
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Bounds (me; U1, U2, V1, V2 : out Real);
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--- Purpose : Returns the parametric bounds U1, U2, V1 and V2 of
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-- this surface of linear extrusion.
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-- A surface of linear extrusion is infinite in the v
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-- parametric direction, so:
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-- - V1 = Standard_Real::RealFirst()
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-- - V2 = Standard_Real::RealLast().
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IsUClosed (me) returns Boolean;
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--- Purpose: IsUClosed returns true if the "basis curve" of this
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-- surface of linear extrusion is closed.
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IsVClosed (me) returns Boolean;
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--- Purpose : IsVClosed always returns false.
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IsCNu (me; N : Integer) returns Boolean
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--- Purpose : IsCNu returns true if the degree of continuity for the
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-- "basis curve" of this surface of linear extrusion is at least N.
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-- Raises RangeError if N < 0.
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raises RangeError;
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IsCNv (me; N : Integer) returns Boolean;
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--- Purpose : IsCNv always returns true.
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IsUPeriodic (me) returns Boolean;
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--- Purpose : IsUPeriodic returns true if the "basis curve" of this
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-- surface of linear extrusion is periodic.
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IsVPeriodic (me) returns Boolean;
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--- Purpose : IsVPeriodic always returns false.
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UIso (me; U : Real) returns Curve;
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--- Purpose : Computes the U isoparametric curve of this surface
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-- of linear extrusion. This is the line parallel to the
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-- direction of extrusion, passing through the point of
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-- parameter U of the basis curve.
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VIso (me; V : Real) returns Curve;
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--- Purpose : Computes the V isoparametric curve of this surface
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-- of linear extrusion. This curve is obtained by
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-- translating the extruded curve in the direction of
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-- extrusion, with the magnitude V.
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D0 (me; U, V : Real; P : out Pnt);
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--- Purpose :
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-- Computes the point P (U, V) on the surface.
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-- The parameter U is the parameter on the extruded curve.
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-- The parametrization V is a linear parametrization, and
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-- the direction of parametrization is the direction of
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-- extrusion. If the point is on the extruded curve, V = 0.0
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D1 (me; U, V : Real; P : out Pnt; D1U, D1V : out Vec)
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--- Purpose :
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-- Computes the current point and the first derivatives in the
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-- directions U and V.
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-- Raises UndefinedDerivative if the continuity of the surface is not C1.
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raises UndefinedDerivative;
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D2 (me; U, V : Real; P : out Pnt; D1U, D1V, D2U, D2V, D2UV : out Vec)
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--- Purpose ;
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-- Computes the current point, the first and the second derivatives
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-- in the directions U and V.
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-- Raises UndefinedDerivative if the continuity of the surface is not C2.
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raises UndefinedDerivative;
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D3 (me; U, V : Real; P : out Pnt;
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D1U, D1V, D2U, D2V, D2UV, D3U, D3V, D3UUV, D3UVV : out Vec)
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--- Purpose :
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-- Computes the current point, the first,the second and the third
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-- derivatives in the directions U and V.
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-- Raises UndefinedDerivative if the continuity of the surface is not C3.
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raises UndefinedDerivative;
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DN (me; U, V : Real; Nu, Nv : Integer) returns Vec
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--- Purpose :
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-- Computes the derivative of order Nu in the direction u
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-- and Nv in the direction v.
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-- Raises UndefinedDerivative if the continuity of the surface is not CNu in the u
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-- direction and CNv in the v direction.
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--- Raises RangeError if Nu + Nv < 1 or Nu < 0 or Nv < 0.
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raises UndefinedDerivative,
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RangeError;
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LocalD0 (me; U, V : Real; USide : Integer;
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P : out Pnt);
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---Purpose : The following functions evaluates the local
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-- derivatives on surface. Useful to manage discontinuities
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-- on the surface.
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-- if Side = 1 -> P = S( U+,V )
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-- if Side = -1 -> P = S( U-,V )
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-- else P is betveen discontinuities
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-- can be evaluated using methods of
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-- global evaluations P = S( U ,V )
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LocalD1 (me; U, V : Real; USide : Integer;
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P : out Pnt; D1U, D1V : out Vec);
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LocalD2 (me; U, V : Real; USide : Integer;
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P : out Pnt; D1U, D1V, D2U, D2V, D2UV : out Vec);
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LocalD3 (me; U, V : Real; USide : Integer;
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P : out Pnt; D1U, D1V, D2U, D2V, D2UV, D3U, D3V, D3UUV, D3UVV :
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out Vec);
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LocalDN (me; U, V : Real; USide : Integer;
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Nu, Nv : Integer)
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returns Vec;
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Transform(me : mutable; T : Trsf);
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---Purpose: Applies the transformation T to this surface of linear extrusion.
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TransformParameters(me; U,V : in out Real; T : Trsf from gp)
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---Purpose: Computes the parameters on the transformed surface for
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-- the transform of the point of parameters U,V on <me>.
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--
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-- me->Transformed(T)->Value(U',V')
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--
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-- is the same point as
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--
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-- me->Value(U,V).Transformed(T)
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--
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-- Where U',V' are the new values of U,V after calling
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--
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-- me->TranformParameters(U,V,T)
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--
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-- This methods multiplies :
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-- U by BasisCurve()->ParametricTransformation(T)
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-- V by T.ScaleFactor()
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is redefined;
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ParametricTransformation(me; T : Trsf from gp) returns GTrsf2d from gp
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---Purpose: Returns a 2d transformation used to find the new
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-- parameters of a point on the transformed surface.
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--
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-- me->Transformed(T)->Value(U',V')
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--
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-- is the same point as
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--
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-- me->Value(U,V).Transformed(T)
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--
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-- Where U',V' are obtained by transforming U,V with
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-- th 2d transformation returned by
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--
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-- me->ParametricTransformation(T)
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--
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-- This methods returns a scale
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-- U by BasisCurve()->ParametricTransformation(T)
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-- V by T.ScaleFactor()
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is redefined;
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Copy (me) returns like me;
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---Purpose: Creates a new object which is a copy of this surface of linear extrusion.
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end;
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