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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 itkVectorLinearInterpolateImageFunction_h
#define itkVectorLinearInterpolateImageFunction_h
#include "itkVectorInterpolateImageFunction.h"
namespace itk
{
/**
* \class VectorLinearInterpolateImageFunction
* \brief Linearly interpolate a vector image at specified positions.
*
* VectorLinearInterpolateImageFunction linearly interpolates a vector
* image intensity non-integer pixel position. This class is templated
* over the input image type and the coordinate representation type.
*
* This function works for N-dimensional images.
*
* \warning This function work only for Vector images. For
* scalar images use LinearInterpolateImageFunction.
*
* \ingroup ImageFunctions ImageInterpolators
*
* \ingroup ITKImageFunction
*/
template <typename TInputImage, typename TCoordRep = double>
class ITK_TEMPLATE_EXPORT VectorLinearInterpolateImageFunction
: public VectorInterpolateImageFunction<TInputImage, TCoordRep>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(VectorLinearInterpolateImageFunction);
/** Standard class type aliases. */
using Self = VectorLinearInterpolateImageFunction;
using Superclass = VectorInterpolateImageFunction<TInputImage, TCoordRep>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(VectorLinearInterpolateImageFunction);
/** InputImageType type alias support */
using typename Superclass::InputImageType;
using typename Superclass::PixelType;
using typename Superclass::ValueType;
using typename Superclass::RealType;
/** Grab the vector dimension from the superclass. */
static constexpr unsigned int Dimension = Superclass::Dimension;
/** Dimension underlying input image. */
static constexpr unsigned int ImageDimension = Superclass::ImageDimension;
/** Index type alias support */
using typename Superclass::IndexType;
/** ContinuousIndex type alias support */
using typename Superclass::ContinuousIndexType;
using InternalComputationType = typename ContinuousIndexType::ValueType;
/** Output type is Vector<double,Dimension> */
using typename Superclass::OutputType;
/** Evaluate the function at a ContinuousIndex position
*
* Returns the linearly interpolated image intensity at a
* specified point position. No bounds checking is done.
* The point is assume to lie within the image buffer.
*
* ImageFunction::IsInsideBuffer() can be used to check bounds before
* calling the method. */
OutputType
EvaluateAtContinuousIndex(const ContinuousIndexType & index) const override;
protected:
VectorLinearInterpolateImageFunction() = default;
~VectorLinearInterpolateImageFunction() override = default;
private:
/** Number of neighbors used in the interpolation */
static const unsigned long m_Neighbors;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkVectorLinearInterpolateImageFunction.hxx"
#endif
#endif
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