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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkVTKImageExport_h
#define itkVTKImageExport_h
#include "itkVTKImageExportBase.h"
#include "itkConceptChecking.h"
namespace itk
{
/**
* \class VTKImageExport
* \brief Connect the end of an ITK image pipeline to a VTK pipeline.
*
* VTKImageExport can be used at the end of an ITK image pipeline to
* connect with a VTK pipeline that begins with vtkImageImport.
* Callbacks provided by VTKImageExport are registered with
* vtkImageImport to connect the pipeline execution together. Once
* connected, update requests coming through the VTK pipeline are
* automatically propagated to the ITK pipeline.
*
* While VTKImageExportBase provides the pipeline functionality
* independent of image type, instances must be created through
* VTKImageExport. This class provides the implementations for
* callbacks that depend on the image type.
*
* Note that not all image types will work correctly. VTK will only
* support images of 1, 2, or 3 dimensions. Scalar value types can be
* one of: float, double, char, unsigned char, short, unsigned short,
* int, unsigned int, long, unsigned long.
*
* VTKImageExport also supports pixel types with multiple
* components (like RGBPixel).
*
* \ingroup IOFilters
* \sa VTKImageExportBase
* \ingroup ITKVTK
*/
template <typename TInputImage>
class ITK_TEMPLATE_EXPORT VTKImageExport : public VTKImageExportBase
{
public:
ITK_DISALLOW_COPY_AND_MOVE(VTKImageExport);
/** Standard class type aliases. */
using Self = VTKImageExport;
using Superclass = VTKImageExportBase;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(VTKImageExport);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** The type of the input image. */
using InputImageType = TInputImage;
#ifdef ITK_USE_CONCEPT_CHECKING
itkConceptMacro(ImageDimensionCheck, (Concept::SameDimensionOrMinusOneOrTwo<3, Self::InputImageDimension>));
#endif
/** Set the input image of this image exporter. */
using Superclass::SetInput;
void
SetInput(const InputImageType *);
InputImageType *
GetInput();
protected:
VTKImageExport();
~VTKImageExport() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
using InputImagePointer = typename InputImageType::Pointer;
using InputRegionType = typename InputImageType::RegionType;
using InputSizeType = typename InputRegionType::SizeType;
using InputIndexType = typename InputRegionType::IndexType;
int *
WholeExtentCallback() override;
double *
SpacingCallback() override;
double *
OriginCallback() override;
double *
DirectionCallback() override;
float *
FloatSpacingCallback() override;
float *
FloatOriginCallback() override;
const char *
ScalarTypeCallback() override;
int
NumberOfComponentsCallback() override;
void
PropagateUpdateExtentCallback(int *) override;
int *
DataExtentCallback() override;
void *
BufferPointerCallback() override;
private:
std::string m_ScalarTypeName{};
int m_WholeExtent[6]{};
int m_DataExtent[6]{};
double m_DataSpacing[3]{};
double m_DataOrigin[3]{};
double m_DataDirection[9]{};
float m_FloatDataSpacing[3]{};
float m_FloatDataOrigin[3]{};
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkVTKImageExport.hxx"
#endif
#endif
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