Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 114:3541fc81331a wasm
starting WebAssembly
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 20 Sep 2017 16:11:52 +0200 |
| parents | 2eca030792aa |
| children | ba83e38cf3ff |
| rev | line source |
|---|---|
| 66 | 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 Osimis, 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 "LayerWidget.h" | |
| 23 | |
| 99 | 24 #include "../Layers/SliceOutlineRenderer.h" |
| 85 | 25 |
|
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26 #include <Core/Logging.h> |
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27 |
| 85 | 28 static const double THIN_SLICE_THICKNESS = 100.0 * std::numeric_limits<double>::epsilon(); |
| 66 | 29 |
| 30 namespace OrthancStone | |
| 31 { | |
| 32 class LayerWidget::Scene : public boost::noncopyable | |
| 33 { | |
| 34 private: | |
|
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35 CoordinateSystem3D slice_; |
| 66 | 36 size_t countMissing_; |
| 37 std::vector<ILayerRenderer*> renderers_; | |
| 38 | |
| 39 void DeleteLayer(size_t index) | |
| 40 { | |
| 41 if (index >= renderers_.size()) | |
| 42 { | |
| 43 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 44 } | |
| 45 | |
| 46 assert(countMissing_ <= renderers_.size()); | |
| 47 | |
| 48 if (renderers_[index] != NULL) | |
| 49 { | |
| 50 assert(countMissing_ < renderers_.size()); | |
| 51 delete renderers_[index]; | |
| 52 renderers_[index] = NULL; | |
| 53 countMissing_++; | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 public: | |
|
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58 Scene(const CoordinateSystem3D& slice, |
| 66 | 59 size_t countLayers) : |
| 60 slice_(slice), | |
| 61 countMissing_(countLayers), | |
| 62 renderers_(countLayers, NULL) | |
| 63 { | |
| 64 } | |
| 65 | |
| 66 ~Scene() | |
| 67 { | |
| 68 for (size_t i = 0; i < renderers_.size(); i++) | |
| 69 { | |
| 70 DeleteLayer(i); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 void SetLayer(size_t index, | |
| 75 ILayerRenderer* renderer) // Takes ownership | |
| 76 { | |
| 77 if (renderer == NULL) | |
| 78 { | |
| 79 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 80 } | |
| 81 | |
| 82 DeleteLayer(index); | |
| 83 | |
| 84 renderers_[index] = renderer; | |
| 85 countMissing_--; | |
| 86 } | |
| 87 | |
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88 const CoordinateSystem3D& GetSlice() const |
| 66 | 89 { |
| 90 return slice_; | |
| 91 } | |
| 92 | |
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93 bool HasRenderer(size_t index) |
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94 { |
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95 return renderers_[index] != NULL; |
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96 } |
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97 |
| 66 | 98 bool IsComplete() const |
| 99 { | |
| 100 return countMissing_ == 0; | |
| 101 } | |
| 102 | |
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103 unsigned int GetCountMissing() const |
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104 { |
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105 return countMissing_; |
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106 } |
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107 |
| 66 | 108 bool RenderScene(CairoContext& context, |
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109 const ViewportGeometry& view, |
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110 const CoordinateSystem3D& viewportSlice) |
| 66 | 111 { |
| 112 bool fullQuality = true; | |
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113 cairo_t *cr = context.GetObject(); |
| 66 | 114 |
| 115 for (size_t i = 0; i < renderers_.size(); i++) | |
| 116 { | |
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117 if (renderers_[i] != NULL) |
| 66 | 118 { |
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119 const CoordinateSystem3D& frameSlice = renderers_[i]->GetLayerSlice(); |
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120 |
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121 double x0, y0, x1, y1, x2, y2; |
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122 viewportSlice.ProjectPoint(x0, y0, frameSlice.GetOrigin()); |
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123 viewportSlice.ProjectPoint(x1, y1, frameSlice.GetOrigin() + frameSlice.GetAxisX()); |
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124 viewportSlice.ProjectPoint(x2, y2, frameSlice.GetOrigin() + frameSlice.GetAxisY()); |
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125 |
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126 /** |
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127 * Now we solve the system of linear equations Ax + b = x', given: |
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128 * A [0 ; 0] + b = [x0 ; y0] |
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129 * A [1 ; 0] + b = [x1 ; y1] |
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130 * A [0 ; 1] + b = [x2 ; y2] |
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131 * <=> |
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132 * b = [x0 ; y0] |
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133 * A [1 ; 0] = [x1 ; y1] - b = [x1 - x0 ; y1 - y0] |
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134 * A [0 ; 1] = [x2 ; y2] - b = [x2 - x0 ; y2 - y0] |
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135 * <=> |
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136 * b = [x0 ; y0] |
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137 * [a11 ; a21] = [x1 - x0 ; y1 - y0] |
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138 * [a12 ; a22] = [x2 - x0 ; y2 - y0] |
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139 **/ |
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140 |
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141 cairo_matrix_t transform; |
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142 cairo_matrix_init(&transform, x1 - x0, y1 - y0, x2 - x0, y2 - y0, x0, y0); |
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143 |
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144 cairo_save(cr); |
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145 cairo_transform(cr, &transform); |
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146 |
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147 if (!renderers_[i]->RenderLayer(context, view)) |
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148 { |
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149 cairo_restore(cr); |
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150 return false; |
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151 } |
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152 |
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153 cairo_restore(cr); |
| 66 | 154 } |
| 155 | |
| 156 if (renderers_[i] != NULL && | |
| 157 !renderers_[i]->IsFullQuality()) | |
| 158 { | |
| 159 fullQuality = false; | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 if (!fullQuality) | |
| 164 { | |
| 165 double x, y; | |
| 166 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
| 167 | |
| 168 cairo_translate(cr, x, y); | |
| 95 | 169 |
| 170 #if 1 | |
| 171 double s = 5.0 / view.GetZoom(); | |
| 172 cairo_rectangle(cr, -s, -s, 2.0 * s, 2.0 * s); | |
| 173 #else | |
| 174 // TODO Drawing circles makes WebAssembly crash! | |
| 66 | 175 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); |
| 95 | 176 #endif |
| 177 | |
| 66 | 178 cairo_set_line_width(cr, 2.0 / view.GetZoom()); |
| 179 cairo_set_source_rgb(cr, 1, 1, 1); | |
| 180 cairo_stroke_preserve(cr); | |
| 95 | 181 cairo_set_source_rgb(cr, 1, 0, 0); |
| 66 | 182 cairo_fill(cr); |
| 183 } | |
| 184 | |
| 185 return true; | |
| 186 } | |
| 187 | |
| 188 void SetLayerStyle(size_t index, | |
| 189 const RenderStyle& style) | |
| 190 { | |
| 191 if (renderers_[index] != NULL) | |
| 192 { | |
| 193 renderers_[index]->SetLayerStyle(style); | |
| 194 } | |
| 195 } | |
| 196 }; | |
| 197 | |
| 198 | |
| 199 bool LayerWidget::LookupLayer(size_t& index /* out */, | |
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200 const ILayerSource& layer) const |
| 66 | 201 { |
| 202 LayersIndex::const_iterator found = layersIndex_.find(&layer); | |
| 203 | |
| 204 if (found == layersIndex_.end()) | |
| 205 { | |
| 206 return false; | |
| 207 } | |
| 208 else | |
| 209 { | |
| 210 index = found->second; | |
| 211 assert(index < layers_.size() && | |
| 212 layers_[index] == &layer); | |
| 213 return true; | |
| 214 } | |
| 215 } | |
| 216 | |
| 85 | 217 |
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218 void LayerWidget::GetLayerExtent(Extent2D& extent, |
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219 ILayerSource& source) const |
| 85 | 220 { |
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221 extent.Reset(); |
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222 |
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223 std::vector<Vector> points; |
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224 if (source.GetExtent(points, slice_)) |
| 85 | 225 { |
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226 for (size_t i = 0; i < points.size(); i++) |
| 85 | 227 { |
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228 double x, y; |
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229 slice_.ProjectPoint(x, y, points[i]); |
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230 extent.AddPoint(x, y); |
| 85 | 231 } |
| 232 } | |
| 233 } | |
| 234 | |
| 66 | 235 |
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236 Extent2D LayerWidget::GetSceneExtent() |
| 66 | 237 { |
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238 Extent2D sceneExtent; |
| 66 | 239 |
| 240 for (size_t i = 0; i < layers_.size(); i++) | |
| 241 { | |
| 242 assert(layers_[i] != NULL); | |
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243 Extent2D layerExtent; |
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244 GetLayerExtent(layerExtent, *layers_[i]); |
| 66 | 245 |
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246 sceneExtent.Union(layerExtent); |
| 66 | 247 } |
| 248 | |
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249 return sceneExtent; |
| 66 | 250 } |
| 251 | |
| 252 | |
| 253 bool LayerWidget::RenderScene(CairoContext& context, | |
| 254 const ViewportGeometry& view) | |
| 255 { | |
| 256 if (currentScene_.get() != NULL) | |
| 257 { | |
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258 return currentScene_->RenderScene(context, view, slice_); |
| 66 | 259 } |
| 260 else | |
| 261 { | |
| 262 return true; | |
| 263 } | |
| 264 } | |
| 265 | |
| 266 | |
| 267 void LayerWidget::ResetPendingScene() | |
| 268 { | |
| 269 pendingScene_.reset(new Scene(slice_, layers_.size())); | |
| 270 } | |
| 271 | |
| 272 | |
| 273 void LayerWidget::UpdateLayer(size_t index, | |
| 274 ILayerRenderer* renderer, | |
| 77 | 275 const Slice& slice) |
| 66 | 276 { |
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277 LOG(INFO) << "Updating layer " << index; |
| 66 | 278 |
| 279 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
| 280 | |
| 281 if (renderer == NULL) | |
| 282 { | |
| 283 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 284 } | |
| 285 | |
| 286 if (index >= layers_.size()) | |
| 287 { | |
| 288 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 289 } | |
| 290 | |
| 291 assert(layers_.size() == styles_.size()); | |
| 292 renderer->SetLayerStyle(styles_[index]); | |
| 293 | |
| 294 if (currentScene_.get() != NULL && | |
| 78 | 295 slice.ContainsPlane(currentScene_->GetSlice())) |
| 66 | 296 { |
| 297 currentScene_->SetLayer(index, tmp.release()); | |
| 298 NotifyChange(); | |
| 299 } | |
| 300 else if (pendingScene_.get() != NULL && | |
| 78 | 301 slice.ContainsPlane(pendingScene_->GetSlice())) |
| 66 | 302 { |
| 303 pendingScene_->SetLayer(index, tmp.release()); | |
| 304 | |
| 305 if (currentScene_.get() == NULL || | |
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306 !currentScene_->IsComplete() || |
| 66 | 307 pendingScene_->IsComplete()) |
| 308 { | |
| 309 currentScene_ = pendingScene_; | |
| 310 NotifyChange(); | |
| 311 } | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 | |
| 316 LayerWidget::LayerWidget() : | |
| 78 | 317 started_(false) |
| 66 | 318 { |
| 319 SetBackgroundCleared(true); | |
| 320 } | |
| 321 | |
| 322 | |
| 323 LayerWidget::~LayerWidget() | |
| 324 { | |
| 325 for (size_t i = 0; i < layers_.size(); i++) | |
| 326 { | |
| 327 delete layers_[i]; | |
| 328 } | |
| 329 } | |
| 330 | |
| 331 | |
| 332 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
| 333 { | |
| 334 if (layer == NULL) | |
| 335 { | |
| 336 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 337 } | |
| 338 | |
| 339 size_t index = layers_.size(); | |
| 340 layers_.push_back(layer); | |
| 341 styles_.push_back(RenderStyle()); | |
| 342 layersIndex_[layer] = index; | |
| 343 | |
| 344 ResetPendingScene(); | |
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345 layer->Register(*this); |
| 66 | 346 |
| 103 | 347 ResetChangedLayers(); |
| 348 | |
| 66 | 349 return index; |
| 350 } | |
| 351 | |
| 352 | |
| 353 void LayerWidget::SetLayerStyle(size_t layer, | |
| 354 const RenderStyle& style) | |
| 355 { | |
| 356 if (layer >= layers_.size()) | |
| 357 { | |
| 358 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 359 } | |
| 360 | |
| 361 assert(layers_.size() == styles_.size()); | |
| 362 styles_[layer] = style; | |
| 363 | |
| 364 if (currentScene_.get() != NULL) | |
| 365 { | |
| 366 currentScene_->SetLayerStyle(layer, style); | |
| 367 } | |
| 368 | |
| 369 if (pendingScene_.get() != NULL) | |
| 370 { | |
| 371 pendingScene_->SetLayerStyle(layer, style); | |
| 372 } | |
| 373 | |
| 374 NotifyChange(); | |
| 375 } | |
| 376 | |
| 377 | |
|
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378 void LayerWidget::SetSlice(const CoordinateSystem3D& slice) |
| 66 | 379 { |
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380 LOG(INFO) << "Setting slice origin: (" << slice.GetOrigin()[0] |
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381 << "," << slice.GetOrigin()[1] |
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382 << "," << slice.GetOrigin()[2] << ")"; |
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383 |
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384 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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385 |
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386 //if (!displayedSlice.ContainsPlane(slice)) |
| 66 | 387 { |
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388 if (currentScene_.get() == NULL || |
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389 (pendingScene_.get() != NULL && |
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390 pendingScene_->IsComplete())) |
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391 { |
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392 currentScene_ = pendingScene_; |
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393 } |
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394 |
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395 slice_ = slice; |
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396 ResetPendingScene(); |
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397 |
| 92 | 398 InvalidateAllLayers(); // TODO Removing this line avoid loading twice the image in WASM |
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399 } |
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400 } |
| 66 | 401 |
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402 |
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403 void LayerWidget::NotifyGeometryReady(const ILayerSource& source) |
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404 { |
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405 size_t i; |
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406 if (LookupLayer(i, source)) |
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407 { |
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408 LOG(INFO) << "Geometry ready for layer " << i; |
| 103 | 409 |
| 410 changedLayers_[i] = true; | |
| 411 //layers_[i]->ScheduleLayerCreation(slice_); | |
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412 } |
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413 } |
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414 |
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415 |
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416 void LayerWidget::NotifyGeometryError(const ILayerSource& source) |
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417 { |
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418 LOG(ERROR) << "Cannot get geometry"; |
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419 } |
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420 |
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421 |
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422 void LayerWidget::InvalidateAllLayers() |
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423 { |
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424 for (size_t i = 0; i < layers_.size(); i++) |
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425 { |
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426 assert(layers_[i] != NULL); |
| 103 | 427 changedLayers_[i] = true; |
| 428 | |
| 429 //layers_[i]->ScheduleLayerCreation(slice_); | |
| 66 | 430 } |
| 431 } | |
| 432 | |
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433 |
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434 void LayerWidget::InvalidateLayer(size_t layer) |
| 66 | 435 { |
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436 if (layer >= layers_.size()) |
| 83 | 437 { |
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438 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
| 83 | 439 } |
| 66 | 440 |
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441 assert(layers_[layer] != NULL); |
| 103 | 442 changedLayers_[layer] = true; |
| 443 | |
| 444 //layers_[layer]->ScheduleLayerCreation(slice_); | |
| 77 | 445 } |
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446 |
| 77 | 447 |
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448 void LayerWidget::NotifyContentChange(const ILayerSource& source) |
| 66 | 449 { |
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450 size_t index; |
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451 if (LookupLayer(index, source)) |
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452 { |
| 103 | 453 InvalidateLayer(index); |
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454 } |
| 66 | 455 } |
| 456 | |
| 457 | |
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458 void LayerWidget::NotifySliceChange(const ILayerSource& source, |
| 77 | 459 const Slice& slice) |
| 66 | 460 { |
| 77 | 461 if (slice.ContainsPlane(slice_)) |
| 66 | 462 { |
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463 size_t index; |
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464 if (LookupLayer(index, source)) |
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465 { |
| 103 | 466 InvalidateLayer(index); |
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467 } |
| 66 | 468 } |
| 469 } | |
| 470 | |
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471 |
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472 void LayerWidget::NotifyLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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473 const ILayerSource& source, |
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474 const Slice& slice, |
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475 bool isError) |
| 66 | 476 { |
| 477 size_t index; | |
| 99 | 478 if (slice.IsValid() && |
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479 LookupLayer(index, source) && |
| 85 | 480 slice.ContainsPlane(slice_)) // Whether the slice comes from an older request |
| 66 | 481 { |
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482 if (isError) |
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483 { |
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484 LOG(ERROR) << "Using error renderer on layer " << index; |
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485 } |
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486 else |
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487 { |
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488 LOG(INFO) << "Renderer ready for layer " << index; |
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489 } |
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490 |
| 99 | 491 if (renderer.get() != NULL) |
| 492 { | |
| 493 UpdateLayer(index, renderer.release(), slice); | |
| 494 } | |
| 495 else if (isError) | |
| 496 { | |
| 497 UpdateLayer(index, new SliceOutlineRenderer(slice), slice); | |
| 498 } | |
| 66 | 499 } |
| 500 } | |
| 103 | 501 |
| 502 | |
| 503 void LayerWidget::ResetChangedLayers() | |
| 504 { | |
| 505 changedLayers_.resize(layers_.size()); | |
| 506 | |
| 507 for (size_t i = 0; i < changedLayers_.size(); i++) | |
| 508 { | |
| 509 changedLayers_[i] = false; | |
| 510 } | |
| 511 } | |
| 512 | |
| 513 | |
| 514 void LayerWidget::UpdateContent() | |
| 515 { | |
| 516 assert(changedLayers_.size() <= layers_.size()); | |
| 517 | |
| 518 for (size_t i = 0; i < changedLayers_.size(); i++) | |
| 519 { | |
| 520 if (changedLayers_[i]) | |
| 521 { | |
| 522 layers_[i]->ScheduleLayerCreation(slice_); | |
| 523 } | |
| 524 } | |
| 525 | |
| 526 ResetChangedLayers(); | |
| 527 } | |
| 66 | 528 } |