-- Created on: 1995-07-17 -- Created by: Laurent BUCHARD -- Copyright (c) 1995-1999 Matra Datavision -- Copyright (c) 1999-2014 OPEN CASCADE SAS -- -- This file is part of Open CASCADE Technology software library. -- -- This library is free software; you can redistribute it and/or modify it under -- the terms of the GNU Lesser General Public License version 2.1 as published -- by the Free Software Foundation, with special exception defined in the file -- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT -- distribution for complete text of the license and disclaimer of any warranty. -- -- Alternatively, this file may be used under the terms of Open CASCADE -- commercial license or contractual agreement. class HCurveTool from BRepBlend uses Array1OfReal from TColStd, Shape from GeomAbs, CurveType from GeomAbs, Vec from gp, Pnt from gp, Circ from gp, Elips from gp, Hypr from gp, Parab from gp, Lin from gp, BezierCurve from Geom, BSplineCurve from Geom, HCurve from Adaptor3d raises OutOfRange from Standard, NoSuchObject from Standard, DomainError from Standard is -- -- Global methods - Apply to the whole curve. -- FirstParameter(myclass; C: HCurve from Adaptor3d) returns Real ---C++: inline ; LastParameter(myclass; C: HCurve from Adaptor3d) returns Real ---C++: inline ; -- -- Services to break the curves to the expected continuity -- -- If for example you need the curve to be C2 and the method -- Continuity returns you something lower than C2 (say C1 for -- example). -- -- First compute the number of intervals with the requested -- continuity with the method NbIntervals(). Note that if the -- continuity is higher than the one you need NbIntervals will -- return 1. -- -- Then you get the parameters bounding the intervals with the -- method Intervals, using an array of length at least -- NbIntervals()+1. -- -- If you need to create a curve with a restricted span you can -- use the method Trim(). Continuity(myclass; C: HCurve from Adaptor3d) returns Shape from GeomAbs ---Purpose: ---C++: inline ; NbIntervals(myclass; C: HCurve from Adaptor3d; S : Shape from GeomAbs) returns Integer ---Purpose: Returns the number of intervals for continuity -- . May be one if Continuity(myclass) >= ---C++: inline ; Intervals(myclass; C: HCurve from Adaptor3d; T : in out Array1OfReal from TColStd; S : Shape from GeomAbs) ---Purpose: Stores in the parameters bounding the intervals -- of continuity . -- -- The array must provide enough room to accomodate -- for the parameters. i.e. T.Length() > NbIntervals() raises OutOfRange from Standard ---C++: inline ; IsClosed(myclass; C: HCurve from Adaptor3d) returns Boolean ---C++: inline ; IsPeriodic(myclass; C: HCurve from Adaptor3d) returns Boolean ---C++: inline ; Period(myclass; C: HCurve from Adaptor3d) returns Real raises DomainError from Standard -- if the curve is not periodic ---C++: inline ; Value(myclass; C: HCurve from Adaptor3d; U : Real) returns Pnt from gp --- Purpose : Computes the point of parameter U on the curve. ---C++: inline ; D0 (myclass; C: HCurve from Adaptor3d; U : Real; P : out Pnt from gp) --- Purpose : Computes the point of parameter U on the curve. ---C++: inline ; D1 (myclass; C: HCurve from Adaptor3d; U : Real; P : out Pnt from gp ; V : out Vec from gp) --- Purpose : Computes the point of parameter U on the curve with its -- first derivative. raises DomainError from Standard --- Purpose : Raised if the continuity of the current interval -- is not C1. ---C++: inline ; D2 (myclass; C: HCurve from Adaptor3d; U : Real; P : out Pnt from gp; V1, V2 : out Vec from gp) --- Purpose : -- Returns the point P of parameter U, the first and second -- derivatives V1 and V2. raises DomainError from Standard --- Purpose : Raised if the continuity of the current interval -- is not C2. ---C++: inline ; D3 (myclass; C: HCurve from Adaptor3d; U : Real; P : out Pnt from gp; V1, V2, V3 : out Vec from gp) --- Purpose : -- Returns the point P of parameter U, the first, the second -- and the third derivative. raises DomainError from Standard --- Purpose : Raised if the continuity of the current interval -- is not C3. ---C++: inline ; DN (myclass; C: HCurve from Adaptor3d; U : Real; N : Integer) returns Vec from gp --- Purpose : -- The returned vector gives the value of the derivative for the -- order of derivation N. raises DomainError from Standard, --- Purpose : Raised if the continuity of the current interval -- is not CN. OutOfRange from Standard --- Purpose : Raised if N < 1. ---C++: inline ; Resolution(myclass; C: HCurve from Adaptor3d; R3d : Real) returns Real ---Purpose : Returns the parametric resolution corresponding -- to the real space resolution . ---C++: inline ; GetType(myclass; C: HCurve from Adaptor3d) returns CurveType from GeomAbs ---Purpose: Returns the type of the curve in the current -- interval : Line, Circle, Ellipse, Hyperbola, -- Parabola, BezierCurve, BSplineCurve, OtherCurve. ---C++: inline ; -- -- The following methods must be called when GetType returned -- the corresponding type. -- Line(myclass; C: HCurve from Adaptor3d) returns Lin from gp raises NoSuchObject from Standard ---C++: inline ; Circle(myclass; C: HCurve from Adaptor3d) returns Circ from gp raises NoSuchObject from Standard ---C++: inline ; Ellipse(myclass; C: HCurve from Adaptor3d) returns Elips from gp raises NoSuchObject from Standard ---C++: inline ; Hyperbola(myclass; C: HCurve from Adaptor3d) returns Hypr from gp raises NoSuchObject from Standard ---C++: inline ; Parabola(myclass; C: HCurve from Adaptor3d) returns Parab from gp raises NoSuchObject from Standard ---C++: inline ; Bezier(myclass; C: HCurve from Adaptor3d) returns BezierCurve from Geom raises NoSuchObject from Standard ---C++: inline ; BSpline(myclass; C: HCurve from Adaptor3d) returns BSplineCurve from Geom raises NoSuchObject from Standard ---C++: inline ; NbSamples(myclass; C: HCurve from Adaptor3d; U0,U1: Real from Standard) returns Integer from Standard; end HCurveTool;