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/*=========================================================================
Program: Visualization Toolkit
Module: vtkBlankStructuredGridWithImage.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.
=========================================================================*/
#include "vtkBlankStructuredGridWithImage.h"
#include "vtkCellData.h"
#include "vtkExecutive.h"
#include "vtkFieldData.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkStructuredGrid.h"
#include "vtkUnsignedCharArray.h"
vtkStandardNewMacro(vtkBlankStructuredGridWithImage);
//----------------------------------------------------------------------------
vtkBlankStructuredGridWithImage::vtkBlankStructuredGridWithImage()
{
this->SetNumberOfInputPorts(2);
}
//----------------------------------------------------------------------------
vtkBlankStructuredGridWithImage::~vtkBlankStructuredGridWithImage()
{
}
//----------------------------------------------------------------------------
// Specify the input data or filter.
void vtkBlankStructuredGridWithImage::SetBlankingInputData(vtkImageData *input)
{
this->SetInputData(1, input);
}
//----------------------------------------------------------------------------
// Specify the input data or filter.
vtkImageData *vtkBlankStructuredGridWithImage::GetBlankingInput()
{
if (this->GetNumberOfInputConnections(1) < 1)
{
return NULL;
}
return vtkImageData::SafeDownCast(
this->GetExecutive()->GetInputData(1, 0));
}
//----------------------------------------------------------------------------
int vtkBlankStructuredGridWithImage::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *imageInfo = inputVector[1]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and output
vtkStructuredGrid *grid = vtkStructuredGrid::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkImageData *image = vtkImageData::SafeDownCast(
imageInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkStructuredGrid *output = vtkStructuredGrid::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
int gridDims[3], imageDims[3];
vtkDebugMacro(<< "Adding image blanking");
// Perform error checking
grid->GetDimensions(gridDims);
image->GetDimensions(imageDims);
if ( gridDims[0] != imageDims[0] || gridDims[1] != imageDims[1] ||
gridDims[2] != imageDims[2] )
{
vtkErrorMacro("Blanking dimensions must be identical with grid dimensions. "
"Blanking dimensions are " << imageDims[0] << " "
<< imageDims[1] << " " << imageDims[2]
<< ". Grid dimensions are " << gridDims[0] << " "
<< gridDims[1] << " " << gridDims[2] << ".");
return 1;
}
if ( image->GetScalarType() != VTK_UNSIGNED_CHAR ||
image->GetNumberOfScalarComponents() != 1 )
{
vtkErrorMacro(<<"This filter requires unsigned char images with one component");
return 1;
}
// Get the image, set it as the blanking array.
unsigned char *data = static_cast<unsigned char *>(image->GetScalarPointer());
vtkUnsignedCharArray *visibility = vtkUnsignedCharArray::New();
const vtkIdType numberOfValues = gridDims[0] * gridDims[1] * gridDims[2];
visibility->SetArray(data, numberOfValues, 1);
vtkUnsignedCharArray *ghosts = vtkUnsignedCharArray::New();
ghosts->SetNumberOfValues(numberOfValues);
ghosts->SetName(vtkDataSetAttributes::GhostArrayName());
for(vtkIdType ptId = 0; ptId < numberOfValues; ++ptId)
{
unsigned char value = 0;
if(visibility->GetValue(ptId) == 0)
{
value |= vtkDataSetAttributes::HIDDENPOINT;
}
ghosts->SetValue(ptId, value);
}
output->CopyStructure(grid);
output->GetPointData()->PassData(grid->GetPointData());
output->GetCellData()->PassData(grid->GetCellData());
output->GetPointData()->AddArray(ghosts);
ghosts->Delete();
visibility->Delete();
return 1;
}
//----------------------------------------------------------------------------
int vtkBlankStructuredGridWithImage::FillInputPortInformation(
int port, vtkInformation *info)
{
if (port == 0)
{
return this->Superclass::FillInputPortInformation(port, info);
}
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkImageData");
return 1;
}
//----------------------------------------------------------------------------
void vtkBlankStructuredGridWithImage::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}
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