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/*=========================================================================
Program: ParaView
Module: vtkPVChangeOfBasisHelper.h
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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.
=========================================================================*/
// .NAME vtkPVChangeOfBasisHelper
// .SECTION Description
// vtkPVChangeOfBasisHelper is designed for ORNL-SNS use-cases where we needed
// to add support for different basis.
#ifndef vtkPVChangeOfBasisHelper_h
#define vtkPVChangeOfBasisHelper_h
#include "vtkPVVTKExtensionsCoreModule.h" // needed for export macro
#include "vtkObject.h"
#include "vtkDataObject.h"
#include "vtkDoubleArray.h"
#include "vtkFieldData.h"
#include "vtkMatrix4x4.h"
#include "vtkNew.h"
#include "vtkSmartPointer.h"
#include "vtkStringArray.h"
#include "vtkVector.h"
#include <algorithm>
class vtkPVChangeOfBasisHelper
{
public:
// Description:
// Given a set of basis vectors, returns the change-of-basis matrix.
static vtkSmartPointer<vtkMatrix4x4> GetChangeOfBasisMatrix(
const vtkVector3d& u, const vtkVector3d& v, const vtkVector3d& w)
{
vtkSmartPointer<vtkMatrix4x4> cobMatrix = vtkSmartPointer<vtkMatrix4x4>::New();
cobMatrix->Identity();
std::copy(u.GetData(), u.GetData() + 3, cobMatrix->Element[0]);
std::copy(v.GetData(), v.GetData() + 3, cobMatrix->Element[1]);
std::copy(w.GetData(), w.GetData() + 3, cobMatrix->Element[2]);
cobMatrix->Transpose();
return cobMatrix;
}
static bool GetBasisVectors(vtkMatrix4x4* matrix,
vtkVector3d& u, vtkVector3d& v, vtkVector3d& w)
{
if (matrix)
{
double xaxis[4]={1, 0, 0, 1};
double yaxis[4]={0, 1, 0, 1};
double zaxis[4]={0, 0, 1, 1};
matrix->MultiplyPoint(xaxis, xaxis);
matrix->MultiplyPoint(yaxis, yaxis);
matrix->MultiplyPoint(zaxis, zaxis);
for (int cc=0; cc < 3; cc++)
{
xaxis[cc] /= xaxis[3];
yaxis[cc] /= yaxis[3];
zaxis[cc] /= zaxis[3];
}
u = vtkVector3d(xaxis);
v = vtkVector3d(yaxis);
w = vtkVector3d(zaxis);
return true;
}
else
{
u = vtkVector3d(1, 0, 0);
v = vtkVector3d(0, 1, 0);
w = vtkVector3d(0, 0, 1);
}
return false;
}
// Description:
// Add change-of-basis matrix to the field data for the given dataobject.
static bool AddChangeOfBasisMatrixToFieldData(vtkDataObject* dataObject,
vtkMatrix4x4* matrix)
{
if (dataObject && matrix)
{
vtkNew<vtkDoubleArray> cobArray;
cobArray->SetName("ChangeOfBasisMatrix");
cobArray->SetNumberOfComponents(16);
cobArray->SetNumberOfTuples(1);
std::copy(&matrix->Element[0][0], (&matrix->Element[0][0]) + 16, cobArray->GetPointer(0));
dataObject->GetFieldData()->AddArray(cobArray.GetPointer());
return true;
}
return false;
}
static vtkSmartPointer<vtkMatrix4x4> GetChangeOfBasisMatrix(vtkDataObject* dataObject)
{
if (dataObject && dataObject->GetFieldData() &&
dataObject->GetFieldData()->GetArray("ChangeOfBasisMatrix"))
{
vtkDataArray* array = dataObject->GetFieldData()->GetArray("ChangeOfBasisMatrix");
if (array && array->GetNumberOfComponents() == 16 && array->GetNumberOfTuples() == 1)
{
vtkSmartPointer<vtkMatrix4x4> mat = vtkSmartPointer<vtkMatrix4x4>::New();
array->GetTuple(0, &mat->Element[0][0]);
return mat;
}
}
return vtkSmartPointer<vtkMatrix4x4>();
}
// Description:
// Add basis titles to field data.
static bool AddBasisNames(vtkDataObject* dataObject,
const char* utitle, const char* vtitle, const char* wtitle)
{
if (!dataObject) { return false; }
if (utitle)
{
vtkNew<vtkStringArray> uAxisTitle;
uAxisTitle->SetName("AxisTitleForX");
uAxisTitle->SetNumberOfComponents(1);
uAxisTitle->SetNumberOfTuples(1);
uAxisTitle->SetValue(0, utitle);
uAxisTitle->SetComponentName(0, utitle);
dataObject->GetFieldData()->AddArray(uAxisTitle.GetPointer());
}
if (vtitle)
{
vtkNew<vtkStringArray> vAxisTitle;
vAxisTitle->SetName("AxisTitleForY");
vAxisTitle->SetNumberOfComponents(1);
vAxisTitle->SetNumberOfTuples(1);
vAxisTitle->SetValue(0, vtitle);
vAxisTitle->SetComponentName(0, vtitle);
dataObject->GetFieldData()->AddArray(vAxisTitle.GetPointer());
}
if (wtitle)
{
vtkNew<vtkStringArray> wAxisTitle;
wAxisTitle->SetName("AxisTitleForZ");
wAxisTitle->SetNumberOfComponents(1);
wAxisTitle->SetNumberOfTuples(1);
wAxisTitle->SetValue(0, wtitle);
wAxisTitle->SetComponentName(0, wtitle);
dataObject->GetFieldData()->AddArray(wAxisTitle.GetPointer());
}
return (utitle || vtitle || wtitle);
}
static void GetBasisName(vtkDataObject* dataObject,
const char*& utitle, const char* &vtitle, const char* &wtitle)
{
utitle = vtitle = wtitle = NULL;
if (!dataObject || !dataObject->GetFieldData()) { return;}
if (vtkStringArray* uarray = vtkStringArray::SafeDownCast(
dataObject->GetFieldData()->GetAbstractArray("AxisTitleForX")))
{
if (uarray->GetNumberOfValues() == 1)
{
utitle = uarray->GetValue(0).c_str();
}
}
if (vtkStringArray* varray = vtkStringArray::SafeDownCast(
dataObject->GetFieldData()->GetAbstractArray("AxisTitleForY")))
{
if (varray->GetNumberOfValues() == 1)
{
vtitle = varray->GetValue(0).c_str();
}
}
if (vtkStringArray* warray = vtkStringArray::SafeDownCast(
dataObject->GetFieldData()->GetAbstractArray("AxisTitleForZ")))
{
if (warray->GetNumberOfValues() == 1)
{
wtitle = warray->GetValue(0).c_str();
}
}
}
// Description:
// Add bounding box in model space.
static bool AddBoundingBoxInBasis(vtkDataObject* dataObject, const double bbox[6])
{
if (dataObject)
{
vtkNew<vtkDoubleArray> bounds;
bounds->SetName("BoundingBoxInModelCoordinates");
bounds->SetNumberOfComponents(6);
bounds->SetNumberOfTuples(1);
std::copy(bbox, bbox+6, bounds->GetPointer(0));
dataObject->GetFieldData()->AddArray(bounds.GetPointer());
return true;
}
return false;
}
static bool GetBoundingBoxInBasis(vtkDataObject* dataObject, double bbox[6])
{
if (dataObject && dataObject->GetFieldData() &&
dataObject->GetFieldData()->GetArray("BoundingBoxInModelCoordinates"))
{
vtkDataArray* array = dataObject->GetFieldData()->GetArray("BoundingBoxInModelCoordinates");
if (array && array->GetNumberOfTuples() == 1 && array->GetNumberOfComponents() == 6)
{
array->GetTuple(0, bbox);
return true;
}
}
return false;
}
};
#endif
//****************************************************************************
// VTK-HeaderTest-Exclude: vtkPVChangeOfBasisHelper.h
|
