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146 lines
4.7 KiB
C++
146 lines
4.7 KiB
C++
// Created on: 1995-07-17
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// Created by: Laurent BUCHARD
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// Copyright (c) 1995-1999 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 _BRepBlend_HCurveTool_HeaderFile
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#define _BRepBlend_HCurveTool_HeaderFile
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#include <Adaptor3d_Curve.hxx>
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#include <GeomAbs_CurveType.hxx>
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#include <GeomAbs_Shape.hxx>
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#include <gp_Circ.hxx>
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#include <gp_Elips.hxx>
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#include <gp_Lin.hxx>
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#include <gp_Parab.hxx>
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#include <gp_Pnt.hxx>
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#include <gp_Vec.hxx>
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#include <gp_Hypr.hxx>
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#include <TColStd_Array1OfReal.hxx>
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class BRepBlend_HCurveTool
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{
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public:
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DEFINE_STANDARD_ALLOC
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static Standard_Real FirstParameter (const Handle(Adaptor3d_Curve)& C);
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static Standard_Real LastParameter (const Handle(Adaptor3d_Curve)& C);
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static GeomAbs_Shape Continuity (const Handle(Adaptor3d_Curve)& C);
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//! Returns the number of intervals for continuity
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//! <S>. May be one if Continuity(myclass) >= <S>
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static Standard_Integer NbIntervals (const Handle(Adaptor3d_Curve)& C, const GeomAbs_Shape S);
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//! Stores in <T> the parameters bounding the intervals
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//! of continuity <S>.
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//!
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//! The array must provide enough room to accommodate
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//! for the parameters. i.e. T.Length() > NbIntervals()
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static void Intervals (const Handle(Adaptor3d_Curve)& C, TColStd_Array1OfReal& T, const GeomAbs_Shape S);
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static Standard_Boolean IsClosed (const Handle(Adaptor3d_Curve)& C);
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static Standard_Boolean IsPeriodic (const Handle(Adaptor3d_Curve)& C);
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static Standard_Real Period (const Handle(Adaptor3d_Curve)& C);
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//! Computes the point of parameter U on the curve.
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static gp_Pnt Value (const Handle(Adaptor3d_Curve)& C, const Standard_Real U);
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//! Computes the point of parameter U on the curve.
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static void D0 (const Handle(Adaptor3d_Curve)& C, const Standard_Real U, gp_Pnt& P);
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//! Computes the point of parameter U on the curve with its
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//! first derivative.
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//! Raised if the continuity of the current interval
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//! is not C1.
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static void D1 (const Handle(Adaptor3d_Curve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V);
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//! Returns the point P of parameter U, the first and second
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//! derivatives V1 and V2.
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//! Raised if the continuity of the current interval
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//! is not C2.
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static void D2 (const Handle(Adaptor3d_Curve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2);
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//! Returns the point P of parameter U, the first, the second
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//! and the third derivative.
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//! Raised if the continuity of the current interval
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//! is not C3.
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static void D3 (const Handle(Adaptor3d_Curve)& C, const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3);
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//! The returned vector gives the value of the derivative for the
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//! order of derivation N.
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//! Raised if the continuity of the current interval
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//! is not CN.
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//! Raised if N < 1.
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static gp_Vec DN (const Handle(Adaptor3d_Curve)& C, const Standard_Real U, const Standard_Integer N);
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//! Returns the parametric resolution corresponding
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//! to the real space resolution <R3d>.
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static Standard_Real Resolution (const Handle(Adaptor3d_Curve)& C, const Standard_Real R3d);
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//! Returns the type of the curve in the current
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//! interval : Line, Circle, Ellipse, Hyperbola,
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//! Parabola, BezierCurve, BSplineCurve, OtherCurve.
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static GeomAbs_CurveType GetType (const Handle(Adaptor3d_Curve)& C);
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static gp_Lin Line (const Handle(Adaptor3d_Curve)& C);
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static gp_Circ Circle (const Handle(Adaptor3d_Curve)& C);
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static gp_Elips Ellipse (const Handle(Adaptor3d_Curve)& C);
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static gp_Hypr Hyperbola (const Handle(Adaptor3d_Curve)& C);
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static gp_Parab Parabola (const Handle(Adaptor3d_Curve)& C);
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static Handle(Geom_BezierCurve) Bezier (const Handle(Adaptor3d_Curve)& C);
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static Handle(Geom_BSplineCurve) BSpline (const Handle(Adaptor3d_Curve)& C);
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Standard_EXPORT static Standard_Integer NbSamples (const Handle(Adaptor3d_Curve)& C, const Standard_Real U0, const Standard_Real U1);
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protected:
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private:
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};
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#include <BRepBlend_HCurveTool.lxx>
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#endif // _BRepBlend_HCurveTool_HeaderFile
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