Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/Scene2D.cpp @ 602:03c4b998fcd0
display scene positions in the basic sample
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 29 Apr 2019 14:40:01 +0200 |
| parents | 6129b1e5ba42 |
| children | d9c0a66304cb |
| rev | line source |
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| 582 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "Scene2D.h" | |
| 23 | |
| 24 #include <Core/OrthancException.h> | |
| 25 | |
| 26 | |
| 27 namespace OrthancStone | |
| 28 { | |
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29 class Scene2D::Item |
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30 { |
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31 private: |
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32 std::auto_ptr<ISceneLayer> layer_; |
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33 uint64_t identifier_; |
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34 |
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35 public: |
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36 Item(ISceneLayer* layer, |
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37 uint64_t identifier) : |
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38 layer_(layer), |
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39 identifier_(identifier) |
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40 { |
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41 if (layer == NULL) |
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42 { |
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43 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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44 } |
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45 } |
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46 |
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47 ISceneLayer& GetLayer() const |
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48 { |
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49 assert(layer_.get() != NULL); |
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50 return *layer_; |
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51 } |
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52 |
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53 uint64_t GetIdentifier() const |
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54 { |
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55 return identifier_; |
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56 } |
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57 }; |
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58 |
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59 |
| 582 | 60 Scene2D::Scene2D(const Scene2D& other) : |
| 61 sceneToCanvas_(other.sceneToCanvas_), | |
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62 canvasToScene_(other.canvasToScene_), |
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63 layerCounter_(0) |
| 582 | 64 { |
| 65 for (Content::const_iterator it = other.content_.begin(); | |
| 66 it != other.content_.end(); ++it) | |
| 67 { | |
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68 content_[it->first] = new Item(it->second->GetLayer().Clone(), layerCounter_++); |
| 582 | 69 } |
| 70 } | |
| 71 | |
| 72 | |
| 73 Scene2D::~Scene2D() | |
| 74 { | |
| 75 for (Content::iterator it = content_.begin(); | |
| 76 it != content_.end(); ++it) | |
| 77 { | |
| 78 assert(it->second != NULL); | |
| 79 delete it->second; | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 | |
| 84 void Scene2D::SetLayer(int depth, | |
| 85 ISceneLayer* layer) // Takes ownership | |
| 86 { | |
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87 std::auto_ptr<Item> item(new Item(layer, layerCounter_++)); |
| 582 | 88 |
| 89 if (layer == NULL) | |
| 90 { | |
| 91 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 92 } | |
| 93 | |
| 94 Content::iterator found = content_.find(depth); | |
| 95 | |
| 96 if (found == content_.end()) | |
| 97 { | |
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98 content_[depth] = item.release(); |
| 582 | 99 } |
| 100 else | |
| 101 { | |
| 102 assert(found->second != NULL); | |
| 103 delete found->second; | |
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104 found->second = item.release(); |
| 582 | 105 } |
| 106 } | |
| 107 | |
| 108 | |
| 109 void Scene2D::DeleteLayer(int depth) | |
| 110 { | |
| 111 Content::iterator found = content_.find(depth); | |
| 112 | |
| 113 if (found != content_.end()) | |
| 114 { | |
| 115 assert(found->second != NULL); | |
| 116 delete found->second; | |
| 117 content_.erase(found); | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 | |
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122 bool Scene2D::HasLayer(int depth) const |
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123 { |
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124 return (content_.find(depth) != content_.end()); |
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125 } |
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126 |
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127 |
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128 ISceneLayer& Scene2D::GetLayer(int depth) const |
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129 { |
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130 Content::const_iterator found = content_.find(depth); |
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131 |
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132 if (found == content_.end()) |
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133 { |
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134 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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135 } |
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136 else |
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137 { |
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138 assert(found->second != NULL); |
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139 return found->second->GetLayer(); |
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140 } |
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141 } |
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142 |
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143 |
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144 void Scene2D::Apply(IVisitor& visitor) const |
| 582 | 145 { |
| 146 for (Content::const_iterator it = content_.begin(); | |
| 147 it != content_.end(); ++it) | |
| 148 { | |
| 149 assert(it->second != NULL); | |
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150 visitor.Visit(it->second->GetLayer(), it->second->GetIdentifier(), it->first); |
| 582 | 151 } |
| 152 } | |
| 153 | |
| 154 | |
| 155 void Scene2D::SetSceneToCanvasTransform(const AffineTransform2D& transform) | |
| 156 { | |
| 157 // Make sure the transform is invertible before making any change | |
| 158 AffineTransform2D inverse = AffineTransform2D::Invert(transform); | |
| 159 | |
| 160 sceneToCanvas_ = transform; | |
| 161 canvasToScene_ = inverse; | |
| 162 } | |
| 163 | |
| 164 | |
| 165 void Scene2D::FitContent(unsigned int canvasWidth, | |
| 166 unsigned int canvasHeight) | |
| 167 { | |
| 168 Extent2D extent; | |
| 169 | |
| 170 for (Content::const_iterator it = content_.begin(); | |
| 171 it != content_.end(); ++it) | |
| 172 { | |
| 173 assert(it->second != NULL); | |
| 174 | |
| 175 Extent2D tmp; | |
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176 if (it->second->GetLayer().GetBoundingBox(tmp)) |
| 582 | 177 { |
| 178 extent.Union(tmp); | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 if (!extent.IsEmpty()) | |
| 183 { | |
| 184 double zoomX = static_cast<double>(canvasWidth) / extent.GetWidth(); | |
| 185 double zoomY = static_cast<double>(canvasHeight) / extent.GetHeight(); | |
| 186 | |
| 187 double zoom = std::min(zoomX, zoomY); | |
| 188 if (LinearAlgebra::IsCloseToZero(zoom)) | |
| 189 { | |
| 190 zoom = 1; | |
| 191 } | |
| 192 | |
| 193 double panX = extent.GetCenterX(); | |
| 194 double panY = extent.GetCenterY(); | |
| 195 | |
| 196 // Bring the center of the scene to (0,0) | |
| 197 AffineTransform2D t1 = AffineTransform2D::CreateOffset(-panX, -panY); | |
| 198 | |
| 199 // Scale the scene | |
| 200 AffineTransform2D t2 = AffineTransform2D::CreateScaling(zoom, zoom); | |
| 201 | |
| 202 SetSceneToCanvasTransform(AffineTransform2D::Combine(t2, t1)); | |
| 203 } | |
| 204 } | |
| 205 } |