zoom.h

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/*
    Copyright (C) 2000 PARAPET partners
    Copyright (C) 2000- 2007, Hammersmith Imanet Ltd
    Copyright (C) 2018-2019, University College London
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0 AND License-ref-PARAPET-license

    See STIR/LICENSE.txt for details
*/
#ifndef __stir_ZOOM_H__
#define __stir_ZOOM_H__

#include "stir/common.h"
#include "stir/ZoomOptions.h"

START_NAMESPACE_STIR

template <typename elemT>
class Viewgram;
template <typename elemT>
class RelatedViewgrams;
template <typename elemT>
class VoxelsOnCartesianGrid;
template <typename elemT>
class PixelsOnCartesianGrid;
template <typename elemT>
class CartesianCoordinate3D;
template <int num_dimensions, typename elemT>
class BasicCoordinate;


void zoom_viewgrams(RelatedViewgrams<float>& viewgrams,
                    const float zoom,
                    const int min_tang_pos_num,
                    const int max_tang_pos_num,
                    const float x_offset_in_mm = 0,
                    const float y_offset_in_mm = 0);

void zoom_viewgram(Viewgram<float>& viewgram,
                   const float zoom,
                   const int min_tang_pos_num,
                   const int max_tang_pos_num,
                   const float x_offset_in_mm = 0,
                   const float y_offset_in_mm = 0);
void zoom_viewgram(Viewgram<float>& out_viewgram,
                   const Viewgram<float>& in_viewgram,
                   const float x_offset_in_mm = 0,
                   const float y_offset_in_mm = 0);

VoxelsOnCartesianGrid<float> zoom_image(const VoxelsOnCartesianGrid<float>& image,
                                        const CartesianCoordinate3D<float>& zooms,
                                        const CartesianCoordinate3D<float>& offsets_in_mm,
                                        const BasicCoordinate<3, int>& new_sizes,
                                        const ZoomOptions = ZoomOptions::preserve_sum);

void zoom_image_in_place(VoxelsOnCartesianGrid<float>& image,
                         const CartesianCoordinate3D<float>& zooms,
                         const CartesianCoordinate3D<float>& offsets_in_mm,
                         const BasicCoordinate<3, int>& new_sizes,
                         const ZoomOptions = ZoomOptions::preserve_sum);

void zoom_image(VoxelsOnCartesianGrid<float>& image_out,
                const VoxelsOnCartesianGrid<float>& image_in,
                const ZoomOptions = ZoomOptions::preserve_sum);

//------------------ 2D zooms---------------------

void zoom_image(PixelsOnCartesianGrid<float>& image2D_out,
                const PixelsOnCartesianGrid<float>& image2D_in,
                const ZoomOptions = ZoomOptions::preserve_sum);

VoxelsOnCartesianGrid<float> zoom_image(const VoxelsOnCartesianGrid<float>& image,
                                        const float zoom,
                                        const float x_offset_in_mm,
                                        const float y_offset_in_mm,
                                        const int new_size,
                                        const ZoomOptions = ZoomOptions::preserve_sum);

void zoom_image_in_place(VoxelsOnCartesianGrid<float>& image,
                         const float zoom,
                         const float x_offset_in_mm,
                         const float y_offset_in_mm,
                         const int new_size,
                         const ZoomOptions = ZoomOptions::preserve_sum);


END_NAMESPACE_STIR

#endif