annotate OrthancStone/Sources/Toolbox/AffineTransform2D.h @ 1571:85e117739eca

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 21 Sep 2020 17:46:39 +0200
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #pragma once
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23
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24 #include "../StoneEnumerations.h"
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25 #include "LinearAlgebra.h"
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26
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27 #include <Images/ImageAccessor.h>
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29 namespace OrthancStone
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30 {
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31 class AffineTransform2D
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32 {
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33 private:
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34 Matrix matrix_;
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35
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36 public:
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37 AffineTransform2D();
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38
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39 // The matrix must be 3x3, without perspective effects
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40 explicit AffineTransform2D(const Matrix& m);
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41
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42 AffineTransform2D(const AffineTransform2D& other) :
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43 matrix_(other.matrix_)
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44 {
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45 }
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46
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47 const Matrix& GetHomogeneousMatrix() const
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48 {
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49 return matrix_;
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50 }
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51
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52 void Apply(double& x /* inout */,
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53 double& y /* inout */) const;
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54
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55 void Apply(Orthanc::ImageAccessor& target,
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56 const Orthanc::ImageAccessor& source,
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57 ImageInterpolation interpolation,
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58 bool clear) const;
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60 void ConvertToOpenGLMatrix(float target[16],
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61 unsigned int canvasWidth,
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62 unsigned int canvasHeight) const;
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63
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64 double ComputeZoom() const;
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65
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66 static AffineTransform2D Invert(const AffineTransform2D& a);
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67
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68 static AffineTransform2D Combine(const AffineTransform2D& a,
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69 const AffineTransform2D& b);
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70
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71 static AffineTransform2D Combine(const AffineTransform2D& a,
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72 const AffineTransform2D& b,
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73 const AffineTransform2D& c);
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75 static AffineTransform2D Combine(const AffineTransform2D& a,
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76 const AffineTransform2D& b,
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77 const AffineTransform2D& c,
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78 const AffineTransform2D& d);
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79
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80 // transformations are applied right to left:
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81 // `e` is the first transformation applied and `a` is the last one
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82 static AffineTransform2D Combine(const AffineTransform2D& a,
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83 const AffineTransform2D& b,
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84 const AffineTransform2D& c,
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85 const AffineTransform2D& d,
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86 const AffineTransform2D& e);
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87
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88 static AffineTransform2D CreateOffset(double dx,
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89 double dy);
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90
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91 static AffineTransform2D CreateScaling(double sx,
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92 double sy);
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94 static AffineTransform2D CreateRotation(double angle); // CW rotation in radians
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96 static AffineTransform2D CreateRotation(double angle, // CW rotation in radians
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97 double cx, // rotation center
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98 double cy); // rotation center
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100 static AffineTransform2D CreateOpenGLClipspace(unsigned int canvasWidth,
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101 unsigned int canvasHeight);
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102
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103 static AffineTransform2D CreateFlip(bool flipX,
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104 bool flipY,
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105 unsigned int width,
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106 unsigned int height);
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107 };
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108 }