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582
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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) 2017-2019 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 #include "Scene2D.h"
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23
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24 #include <Core/OrthancException.h>
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25
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26
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27 namespace OrthancStone
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28 {
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29 Scene2D::Scene2D(const Scene2D& other) :
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30 sceneToCanvas_(other.sceneToCanvas_),
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31 canvasToScene_(other.canvasToScene_)
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32 {
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33 for (Content::const_iterator it = other.content_.begin();
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34 it != other.content_.end(); ++it)
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35 {
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36 content_[it->first] = it->second->Clone();
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37 }
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38 }
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39
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40
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41 Scene2D::~Scene2D()
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42 {
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43 for (Content::iterator it = content_.begin();
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44 it != content_.end(); ++it)
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45 {
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46 assert(it->second != NULL);
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47 delete it->second;
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48 }
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49 }
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50
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51
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52 void Scene2D::SetLayer(int depth,
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53 ISceneLayer* layer) // Takes ownership
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54 {
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55 std::auto_ptr<ISceneLayer> protection(layer);
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56
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57 if (layer == NULL)
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58 {
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59 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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60 }
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61
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62 Content::iterator found = content_.find(depth);
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63
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64 if (found == content_.end())
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65 {
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66 content_[depth] = protection.release();
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67 }
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68 else
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69 {
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70 assert(found->second != NULL);
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71 delete found->second;
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72 found->second = protection.release();
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73 }
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74 }
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75
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76
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77 void Scene2D::DeleteLayer(int depth)
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78 {
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79 Content::iterator found = content_.find(depth);
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80
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81 if (found != content_.end())
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82 {
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83 assert(found->second != NULL);
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84 delete found->second;
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85 content_.erase(found);
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86 }
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87 }
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88
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89
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90 void Scene2D::Apply(IVisitor& visitor)
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91 {
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92 for (Content::const_iterator it = content_.begin();
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93 it != content_.end(); ++it)
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94 {
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95 assert(it->second != NULL);
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96 visitor.Visit(*it->second, it->first);
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97 }
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98 }
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99
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100
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101 void Scene2D::SetSceneToCanvasTransform(const AffineTransform2D& transform)
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102 {
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103 // Make sure the transform is invertible before making any change
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104 AffineTransform2D inverse = AffineTransform2D::Invert(transform);
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105
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106 sceneToCanvas_ = transform;
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107 canvasToScene_ = inverse;
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108 }
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109
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110
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111 void Scene2D::FitContent(unsigned int canvasWidth,
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112 unsigned int canvasHeight)
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113 {
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114 Extent2D extent;
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115
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116 for (Content::const_iterator it = content_.begin();
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117 it != content_.end(); ++it)
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118 {
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119 assert(it->second != NULL);
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120
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121 Extent2D tmp;
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122 if (it->second->GetBoundingBox(tmp))
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123 {
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124 extent.Union(tmp);
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125 }
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126 }
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127
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128 if (!extent.IsEmpty())
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129 {
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130 double zoomX = static_cast<double>(canvasWidth) / extent.GetWidth();
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131 double zoomY = static_cast<double>(canvasHeight) / extent.GetHeight();
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132
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133 double zoom = std::min(zoomX, zoomY);
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134 if (LinearAlgebra::IsCloseToZero(zoom))
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135 {
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136 zoom = 1;
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137 }
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138
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139 double panX = extent.GetCenterX();
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140 double panY = extent.GetCenterY();
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141
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142 // Bring the center of the scene to (0,0)
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143 AffineTransform2D t1 = AffineTransform2D::CreateOffset(-panX, -panY);
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144
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145 // Scale the scene
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146 AffineTransform2D t2 = AffineTransform2D::CreateScaling(zoom, zoom);
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147
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148 SetSceneToCanvasTransform(AffineTransform2D::Combine(t2, t1));
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149 }
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150 }
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151 }
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