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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkImageDataOutlineFilter.h"
#include "vtkCompositeDataIterator.h"
#include "vtkCompositeDataSet.h"
#include "vtkDataObjectTreeIterator.h"
#include "vtkDataSet.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkNew.h"
#include "vtkPolyData.h"
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkImageDataOutlineFilter);
//------------------------------------------------------------------------------
vtkImageDataOutlineFilter::vtkImageDataOutlineFilter()
{
this->GenerateFaces = 0;
this->OutputPointsPrecision = SINGLE_PRECISION;
}
//------------------------------------------------------------------------------
vtkImageDataOutlineFilter::~vtkImageDataOutlineFilter() = default;
//------------------------------------------------------------------------------
// Core method to produce an oriented vtkImageData outline.
namespace
{
void ProduceOutline(vtkImageData* input, vtkTypeBool genFaces, vtkPoints* points,
vtkCellArray* lines, vtkCellArray* faces)
{
// Keep track of inserted point ids
vtkIdType ptIds[8];
// Produce the eight vtkImageData points, possibly oriented. Use the
// corner indices of the volume.
double x[3];
int ext[6];
input->GetExtent(ext);
input->TransformIndexToPhysicalPoint(ext[0], ext[2], ext[4], x);
ptIds[0] = points->InsertNextPoint(x);
input->TransformIndexToPhysicalPoint(ext[1], ext[2], ext[4], x);
ptIds[1] = points->InsertNextPoint(x);
input->TransformIndexToPhysicalPoint(ext[0], ext[3], ext[4], x);
ptIds[2] = points->InsertNextPoint(x);
input->TransformIndexToPhysicalPoint(ext[1], ext[3], ext[4], x);
ptIds[3] = points->InsertNextPoint(x);
input->TransformIndexToPhysicalPoint(ext[0], ext[2], ext[5], x);
ptIds[4] = points->InsertNextPoint(x);
input->TransformIndexToPhysicalPoint(ext[1], ext[2], ext[5], x);
ptIds[5] = points->InsertNextPoint(x);
input->TransformIndexToPhysicalPoint(ext[0], ext[3], ext[5], x);
ptIds[6] = points->InsertNextPoint(x);
input->TransformIndexToPhysicalPoint(ext[1], ext[3], ext[5], x);
ptIds[7] = points->InsertNextPoint(x);
// Produce topology, lines plus optional quad faces
vtkIdType pts[4];
// Always generate wire edges. This is a historical behavior.
pts[0] = ptIds[0];
pts[1] = ptIds[1];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[2];
pts[1] = ptIds[3];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[4];
pts[1] = ptIds[5];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[6];
pts[1] = ptIds[7];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[0];
pts[1] = ptIds[2];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[1];
pts[1] = ptIds[3];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[4];
pts[1] = ptIds[6];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[5];
pts[1] = ptIds[7];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[0];
pts[1] = ptIds[4];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[1];
pts[1] = ptIds[5];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[2];
pts[1] = ptIds[6];
lines->InsertNextCell(2, pts);
pts[0] = ptIds[3];
pts[1] = ptIds[7];
lines->InsertNextCell(2, pts);
if (genFaces)
{
pts[0] = ptIds[1];
pts[1] = ptIds[0];
pts[2] = ptIds[2];
pts[3] = ptIds[3];
faces->InsertNextCell(4, pts);
pts[0] = ptIds[0];
pts[1] = ptIds[1];
pts[2] = ptIds[5];
pts[3] = ptIds[4];
faces->InsertNextCell(4, pts);
pts[0] = ptIds[2];
pts[1] = ptIds[0];
pts[2] = ptIds[4];
pts[3] = ptIds[6];
faces->InsertNextCell(4, pts);
pts[0] = ptIds[3];
pts[1] = ptIds[2];
pts[2] = ptIds[6];
pts[3] = ptIds[7];
faces->InsertNextCell(4, pts);
pts[0] = ptIds[1];
pts[1] = ptIds[3];
pts[2] = ptIds[7];
pts[3] = ptIds[5];
faces->InsertNextCell(4, pts);
pts[0] = ptIds[7];
pts[1] = ptIds[6];
pts[2] = ptIds[4];
pts[3] = ptIds[5];
faces->InsertNextCell(4, pts);
}
}
} // anonymous
//------------------------------------------------------------------------------
int vtkImageDataOutlineFilter::RequestData(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
// get the info objects
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation* outInfo = outputVector->GetInformationObject(0);
// get the input and output. Differentiate between composite and typical datasets.
vtkImageData* input = vtkImageData::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));
if (input == nullptr)
{
vtkErrorMacro(<< "Invalid or missing input");
return 0;
}
vtkPolyData* output = vtkPolyData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkDebugMacro(<< "Creating outline");
// Set the desired precision for the points in the output.
vtkNew<vtkPoints> pts;
if (this->OutputPointsPrecision == vtkAlgorithm::DOUBLE_PRECISION)
{
pts->SetDataType(VTK_DOUBLE);
}
else
{
pts->SetDataType(VTK_FLOAT);
}
vtkNew<vtkCellArray> lines;
vtkNew<vtkCellArray> faces;
// Generate the outline
ProduceOutline(input, this->GenerateFaces, pts, lines, faces);
// Define output
output->SetPoints(pts);
output->SetLines(lines);
if (this->GenerateFaces)
{
output->SetPolys(faces);
}
this->CheckAbort();
return 1;
}
//------------------------------------------------------------------------------
int vtkImageDataOutlineFilter::FillInputPortInformation(int, vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkImageData");
return 1;
}
//------------------------------------------------------------------------------
void vtkImageDataOutlineFilter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Generate Faces: " << (this->GenerateFaces ? "On\n" : "Off\n");
os << indent << "Output Points Precision: " << this->OutputPointsPrecision << "\n";
}
VTK_ABI_NAMESPACE_END
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