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annotate OrthancStone/Sources/Toolbox/PixelTestPatterns.h @ 2012:637d6373127a

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width of the vertical slider has doubled to ease user interactions
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 02 Dec 2022 18:49:06 +0100
parents 7053b8a0aaec
children 07964689cb0b
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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
1871
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23 // PixelTestPatterns.h
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24
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25 #pragma once
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26
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27 #include "../StoneException.h"
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28
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29 #include <Images/ImageAccessor.h>
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30
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31 #include <string>
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32 #include <stdint.h>
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33 #include <math.h>
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34
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35 namespace OrthancStone
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36 {
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37 namespace PixelTestPatterns
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38 {
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39 template<typename T, typename U>
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40 inline uint8_t byteAddClip(T v1, U v2)
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41 {
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42 double tmp = static_cast<double>(v1) + static_cast<double>(v2);
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43 if (tmp > 255.0)
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44 tmp = 255;
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45 if (tmp < 0.0)
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46 tmp = 0;
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47 return static_cast<uint8_t>(tmp+0.5);
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48 }
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49
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50 // fills the area with a horizontal gradient.
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51 // leftmost pixels are filled with r0 g0 b0
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52 // rightmost pixels are filled with r1 g1 b1
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53 // linear interpolation in-between
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54 inline void fillWithHGradient(Orthanc::ImageAccessor& target,
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55 uint8_t r0, uint8_t g0, uint8_t b0,
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56 uint8_t r1, uint8_t g1, uint8_t b1)
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57 {
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58 if (target.GetFormat() != Orthanc::PixelFormat_RGBA32) {
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59 ORTHANC_ASSERT(false, "Wrong pixel format");
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60 }
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61 const unsigned int width = target.GetWidth();
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62 const unsigned int height = target.GetHeight();
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63
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64 ORTHANC_ASSERT(width > 0);
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65 ORTHANC_ASSERT(height > 0);
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66
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67 double invWidth = 1.0 / static_cast<double>(target.GetWidth());
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68 double rIncr = (static_cast<double>(r1) - static_cast<double>(r0))* invWidth;
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69 double gIncr = (static_cast<double>(g1) - static_cast<double>(g0))* invWidth;
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70 double bIncr = (static_cast<double>(b1) - static_cast<double>(b0))* invWidth;
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71
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72 for (unsigned int y = 0; y < height; y++)
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73 {
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74 uint8_t r = r0;
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75 uint8_t g = g0;
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76 uint8_t b = b0;
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77 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y));
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78 for (unsigned int x = 0; x < width; x++)
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79 {
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80 q[0] = r;
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81 q[1] = g;
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82 q[2] = b;
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83 q[3] = 255;
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84 r = byteAddClip(r, rIncr);
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85 g = byteAddClip(g, gIncr);
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86 b = byteAddClip(b, bIncr);
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87 q += 4;
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88 }
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89 }
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90 }
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91
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92 inline void fillWithVGradient(Orthanc::ImageAccessor& target,
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93 uint8_t r0, uint8_t g0, uint8_t b0,
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94 uint8_t r1, uint8_t g1, uint8_t b1)
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95 {
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96 if (target.GetFormat() != Orthanc::PixelFormat_RGBA32) {
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97 ORTHANC_ASSERT(false, "Wrong pixel format");
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98 }
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99 const unsigned int width = target.GetWidth();
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100 const unsigned int height = target.GetHeight();
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101
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102 ORTHANC_ASSERT(width > 0);
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103 ORTHANC_ASSERT(height > 0);
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104
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105 double invHeight = 1.0 / static_cast<double>(target.GetHeight());
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106 double rIncr = (static_cast<double>(r1) - static_cast<double>(r0))* invHeight;
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107 double gIncr = (static_cast<double>(g1) - static_cast<double>(g0))* invHeight;
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108 double bIncr = (static_cast<double>(b1) - static_cast<double>(b0))* invHeight;
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109
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110 uint8_t r = r0;
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111 uint8_t g = g0;
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112 uint8_t b = b0;
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113 for (unsigned int y = 0; y < height; y++)
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114 {
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115 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y));
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116 for (unsigned int x = 0; x < width; x++)
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117 {
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118 q[0] = r;
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119 q[1] = g;
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120 q[2] = b;
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121 q[3] = 255;
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122 q += 4;
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123 }
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124 r = byteAddClip(r, rIncr);
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125 g = byteAddClip(g, gIncr);
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126 b = byteAddClip(b, bIncr);
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127 }
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128 }
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129
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130 }
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131 }
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