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/*=========================================================================
Program: Visualization Toolkit
Module: vtkVariantToNumeric.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/*-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
//----------------------------------------------------------------------------
// Templated definition of ToNumeric, isolated into its very own file to
// allow it to be defined before its use with most compilers, but after its
// use for (at least) Visual Studio 6.
template <typename T>
T vtkVariant::ToNumeric(bool* valid, T* vtkNotUsed(ignored)) const
{
if (valid)
{
*valid = true;
}
if (this->IsString())
{
return vtkVariantStringToNumeric<T>(* this->Data.String, valid);
}
if (this->IsFloat())
{
return static_cast<T>(this->Data.Float);
}
if (this->IsDouble())
{
return static_cast<T>(this->Data.Double);
}
if (this->IsChar())
{
return static_cast<T>(this->Data.Char);
}
if (this->IsUnsignedChar())
{
return static_cast<T>(this->Data.UnsignedChar);
}
if (this->IsSignedChar())
{
return static_cast<T>(this->Data.SignedChar);
}
if (this->IsShort())
{
return static_cast<T>(this->Data.Short);
}
if (this->IsUnsignedShort())
{
return static_cast<T>(this->Data.UnsignedShort);
}
if (this->IsInt())
{
return static_cast<T>(this->Data.Int);
}
if (this->IsUnsignedInt())
{
return static_cast<T>(this->Data.UnsignedInt);
}
if (this->IsLong())
{
return static_cast<T>(this->Data.Long);
}
if (this->IsUnsignedLong())
{
return static_cast<T>(this->Data.UnsignedLong);
}
if (this->IsLongLong())
{
return static_cast<T>(this->Data.LongLong);
}
if (this->IsUnsignedLongLong())
{
return static_cast<T>(this->Data.UnsignedLongLong);
}
// For arrays, convert the first value to the appropriate type.
if (this->IsArray())
{
if (this->Data.VTKObject->IsA("vtkDataArray"))
{
// Note: This are not the best conversion.
// We covert the first value to double, then
// cast it back to the appropriate numeric type.
vtkDataArray* da = vtkDataArray::SafeDownCast(this->Data.VTKObject);
return static_cast<T>(da->GetTuple1(0));
}
if (this->Data.VTKObject->IsA("vtkVariantArray"))
{
// Note: This are not the best conversion.
// We covert the first value to double, then
// cast it back to the appropriate numeric type.
vtkVariantArray* va = vtkVariantArray::SafeDownCast(this->Data.VTKObject);
return static_cast<T>(va->GetValue(0).ToDouble());
}
if (this->Data.VTKObject->IsA("vtkStringArray"))
{
vtkStringArray* sa = vtkStringArray::SafeDownCast(this->Data.VTKObject);
return vtkVariantStringToNumeric<T>(sa->GetValue(0), valid);
}
}
if (valid)
{
*valid = false;
}
return static_cast<T>(0);
}
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