AffineTransformation.h

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/*
SyneRBI Synergistic Image Reconstruction Framework (SIRF)
Copyright 2017 - 2020 University College London

This is software developed for the Collaborative Computational
Project in Synergistic Reconstruction for Biomedical Imaging (formerly CCP PETMR)
(http://www.ccpsynerbi.ac.uk/).

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
http://www.apache.org/licenses/LICENSE-2.0
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.

*/

#pragma once

#include <vector>
#include <nifti1_io.h>
#include "sirf/Reg/Transformation.h"
#include <array>

namespace sirf {

// Forward declarations
template<class dataType> class Quaternion;

template<class dataType>
class AffineTransformation : public Transformation<dataType>
{
public:

    static void print(const std::vector<AffineTransformation<dataType> > &mats);
    static std::string get(const std::vector<AffineTransformation<dataType> > &mats);

    AffineTransformation();

    AffineTransformation(const dataType tm[4][4]);

    AffineTransformation(const std::string &filename);

    AffineTransformation(const mat44 &tm);

    AffineTransformation(const std::array<dataType,3> &trans, const Quaternion<dataType> &quat);

    AffineTransformation(const std::array<dataType,3> &trans, const std::array<dataType,3> &euler, const bool degrees = true);

    AffineTransformation(const AffineTransformation& to_copy);

    AffineTransformation& operator=(const AffineTransformation& to_copy);

    bool operator==(const AffineTransformation &other) const;

    bool operator!=(const AffineTransformation &other) const;

    AffineTransformation operator* (const AffineTransformation &other) const;

    dataType const *operator [](unsigned i) const { return _tm[i]; }

    dataType *operator [](unsigned i) { return _tm[i]; }

    mat44 get_as_mat44() const;

    virtual ~AffineTransformation() {}

    virtual NiftiImageData3DDeformation<dataType> get_as_deformation_field(const NiftiImageData<dataType> &ref, const bool use_ref = true) const;

    virtual AffineTransformation deep_copy() const;

    virtual void write(const std::string &filename) const;

    dataType get_determinant() const;

    void print() const;

    AffineTransformation get_inverse() const;

    const std::array<dataType,3> get_Euler_angles() const;

    Quaternion<dataType> get_quaternion() const;

    bool is_rigid() const;

    static AffineTransformation get_average(const std::vector<AffineTransformation<dataType> > &mats);

protected:
    dataType _tm[4][4];
};
}