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9775fa6110
Macro NO_CXX_EXCEPTION was removed from code. Method Raise() was replaced by explicit throw statement. Method Standard_Failure::Caught() was replaced by normal C++mechanism of exception transfer. Method Standard_Failure::Caught() is deprecated now. Eliminated empty constructors. Updated samples. Eliminate empty method ChangeValue from NCollection_Map class. Removed not operable methods from NCollection classes.
171 lines
4.9 KiB
C++
171 lines
4.9 KiB
C++
// Created on: 1991-06-27
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// Created by: Arnaud BOUZY
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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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#include <Expr_FunctionDerivative.hxx>
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#include <Expr_GeneralExpression.hxx>
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#include <Expr_GeneralFunction.hxx>
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#include <Expr_NamedFunction.hxx>
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#include <Expr_NamedUnknown.hxx>
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#include <Expr_NotEvaluable.hxx>
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#include <Expr_NumericValue.hxx>
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#include <Standard_DimensionMismatch.hxx>
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#include <Standard_NotImplemented.hxx>
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#include <Standard_NumericError.hxx>
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#include <Standard_OutOfRange.hxx>
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#include <Standard_Type.hxx>
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#include <TCollection_AsciiString.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(Expr_FunctionDerivative,Expr_GeneralFunction)
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Expr_FunctionDerivative::Expr_FunctionDerivative (const Handle(Expr_GeneralFunction)& func, const Handle(Expr_NamedUnknown)& withX, const Standard_Integer deg)
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{
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myFunction = func;
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myDerivate = withX;
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if (deg <= 0) {
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throw Standard_OutOfRange();
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}
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myDegree = deg;
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UpdateExpression();
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}
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Standard_Integer Expr_FunctionDerivative::NbOfVariables () const
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{
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return myFunction->NbOfVariables();
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}
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Handle(Expr_NamedUnknown) Expr_FunctionDerivative::Variable (const Standard_Integer index) const
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{
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return myFunction->Variable(index);
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}
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Standard_Real Expr_FunctionDerivative::Evaluate (const Expr_Array1OfNamedUnknown& vars, const TColStd_Array1OfReal& values) const
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{
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if (vars.Length() != values.Length()) {
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throw Standard_OutOfRange();
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}
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return myExp->Evaluate(vars,values);
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}
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Handle(Expr_GeneralFunction) Expr_FunctionDerivative::Copy () const
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{
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return new Expr_FunctionDerivative(myFunction->Copy(),myDerivate,myDegree);
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}
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Handle(Expr_GeneralFunction) Expr_FunctionDerivative::Derivative(const Handle(Expr_NamedUnknown)& var) const
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{
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return Derivative(var,1);
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}
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Handle(Expr_GeneralFunction) Expr_FunctionDerivative::Derivative(const Handle(Expr_NamedUnknown)& var, const Standard_Integer deg) const
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{
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if (var == myDerivate) {
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return new Expr_FunctionDerivative(myFunction,var,myDegree+deg);
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}
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Handle(Expr_FunctionDerivative) me = this;
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return new Expr_FunctionDerivative(me,var,deg);
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}
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Standard_Boolean Expr_FunctionDerivative::IsIdentical (const Handle(Expr_GeneralFunction)& func) const
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{
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if (!func->IsKind(STANDARD_TYPE(Expr_FunctionDerivative))) {
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return Standard_False;
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}
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Handle(Expr_FunctionDerivative) dfunc = Handle(Expr_FunctionDerivative)::DownCast(func);
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if (myDegree != dfunc->Degree()) {
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return Standard_False;
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}
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if (!myDerivate->IsIdentical(dfunc->DerivVariable())) {
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return Standard_False;
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}
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if (!myFunction->IsIdentical(dfunc->Function())) {
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return Standard_False;
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}
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return Standard_True;
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}
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Standard_Boolean Expr_FunctionDerivative::IsLinearOnVariable(const Standard_Integer) const
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{
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// should be improved
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return myExp->IsLinear();
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}
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Handle(Expr_GeneralFunction) Expr_FunctionDerivative::Function () const
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{
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return myFunction;
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}
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Standard_Integer Expr_FunctionDerivative::Degree () const
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{
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return myDegree;
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}
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Handle(Expr_NamedUnknown) Expr_FunctionDerivative::DerivVariable () const
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{
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return myDerivate;
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}
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TCollection_AsciiString Expr_FunctionDerivative::GetStringName() const
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{
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TCollection_AsciiString res;
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if (NbOfVariables() ==1) {
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res = myFunction->GetStringName();
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char c = 39;
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TCollection_AsciiString diff(myDegree,c);
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res += diff;
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return res;
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}
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TCollection_AsciiString diff("@");
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if (myDegree > 1) {
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TCollection_AsciiString deg(myDegree);
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diff += deg;
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}
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res = diff;
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res += myFunction->GetStringName();
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res += "/";
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Standard_Integer index=0;
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for (Standard_Integer i=1; (i<= NbOfVariables()) && (index ==0) ; i++) {
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if (Variable(i) == myDerivate) {
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index =i;
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}
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}
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res += diff;
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res += "X";
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TCollection_AsciiString rank(index);
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res += rank;
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return res;
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}
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Handle(Expr_GeneralExpression) Expr_FunctionDerivative::Expression() const
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{
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return myExp;
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}
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void Expr_FunctionDerivative::UpdateExpression()
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{
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if (myFunction->IsKind(STANDARD_TYPE(Expr_FunctionDerivative))) {
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Handle(Expr_FunctionDerivative) defunc = Handle(Expr_FunctionDerivative)::DownCast(myFunction);
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defunc->UpdateExpression();
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myExp = defunc->Expression()->NDerivative(myDerivate,myDegree);
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}
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else {
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Handle(Expr_NamedFunction) nafunc = Handle(Expr_NamedFunction)::DownCast(myFunction);
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myExp = nafunc->Expression()->NDerivative(myDerivate,myDegree);
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}
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}
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