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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkStructuredPointArray.h"
#include "vtkStructuredPointBackend.txx"
#include "vtkArrayDispatch.h"
namespace
{
//------------------------------------------------------------------------------
template <typename ValueType, bool UseDirMatrix>
struct StructuredPointsWorker
{
template <typename ArrayTypeX, typename ArrayTypeY, typename ArrayTypeZ>
void operator()(ArrayTypeX* arrayX, ArrayTypeY* arrayY, ArrayTypeZ* arrayZ,
vtkSmartPointer<vtkImplicitArray<vtkStructuredPointBackend<ValueType>>>& structuredPointArray,
int extent[6], int dataDescription, double dirMatrix[9])
{
std::shared_ptr<vtkStructuredPointBackend<ValueType>> backend;
switch (dataDescription)
{
case 9 /*VTK_EMPTY*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
9, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 1 /*VTK_SINGLE_POINT*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
1, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 2 /*VTK_X_LINE*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
2, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 3 /*VTK_Y_LINE*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
3, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 4 /*VTK_Z_LINE*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
4, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 5 /*VTK_XY_PLANE*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
5, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 6 /*VTK_YZ_PLANE*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
6, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 7 /*VTK_XZ_PLANE*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
7, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
case 8 /*VTK_XYZ_GRID*/:
{
using TBackend = vtkStructuredTPointBackend<ValueType, ArrayTypeX, ArrayTypeY, ArrayTypeZ,
8, UseDirMatrix>;
backend = std::make_shared<TBackend>(arrayX, arrayY, arrayZ, extent, dirMatrix);
break;
}
default:
{
vtkGenericWarningMacro("Execute: Unknown data description" << dataDescription);
break;
}
}
structuredPointArray->SetBackend(backend);
}
};
} // end anon namespace
//-----------------------------------------------------------------------
namespace vtk
{
VTK_ABI_NAMESPACE_BEGIN
template <typename ValueType>
vtkSmartPointer<vtkImplicitArray<vtkStructuredPointBackend<ValueType>>> CreateStructuredPointArray(
vtkDataArray* xCoords, vtkDataArray* yCoords, vtkDataArray* zCoords, int extent[6],
int dataDescription, double dirMatrix[9])
{
assert(xCoords && yCoords && zCoords && extent && dirMatrix);
const bool isIdentity = (dirMatrix[0] == 1.0 && dirMatrix[4] == 1.0 && dirMatrix[8] == 1.0 &&
dirMatrix[1] == 0.0 && dirMatrix[2] == 0.0 && dirMatrix[3] == 0.0 && dirMatrix[5] == 0.0 &&
dirMatrix[6] == 0.0 && dirMatrix[7] == 0.0);
int dim[3] = { extent[1] - extent[0] + 1, extent[3] - extent[2] + 1, extent[5] - extent[4] + 1 };
auto structuredPointArray =
vtkSmartPointer<vtkImplicitArray<vtkStructuredPointBackend<ValueType>>>::New();
structuredPointArray->SetNumberOfComponents(3);
const auto numPoints = static_cast<vtkIdType>(dim[0]) * dim[1] * dim[2];
structuredPointArray->SetNumberOfTuples(numPoints);
if (isIdentity)
{
StructuredPointsWorker<ValueType, false /*UseDirMatrix=*/> worker;
using Dispatcher = vtkArrayDispatch::Dispatch3BySameValueType<vtkArrayDispatch::Reals>;
if (!Dispatcher::Execute(xCoords, yCoords, zCoords, worker, structuredPointArray, extent,
dataDescription, dirMatrix))
{
worker(xCoords, yCoords, zCoords, structuredPointArray, extent, dataDescription, dirMatrix);
}
}
else
{
StructuredPointsWorker<ValueType, true /*UseDirMatrix=*/> worker;
using Dispatcher = vtkArrayDispatch::Dispatch3BySameValueType<vtkArrayDispatch::Reals>;
if (!Dispatcher::Execute(xCoords, yCoords, zCoords, worker, structuredPointArray, extent,
dataDescription, dirMatrix))
{
worker(xCoords, yCoords, zCoords, structuredPointArray, extent, dataDescription, dirMatrix);
}
}
return structuredPointArray;
}
VTK_ABI_NAMESPACE_END
}
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