Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 111:7665ccbf33db wasm
rename Extent as Extent2D
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 14 Jun 2017 15:54:06 +0200 |
parents | 53025eecbc95 |
children | 2eca030792aa |
rev | line source |
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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 | |
24 #include "../../Resources/Orthanc/Core/Logging.h" | |
99 | 25 #include "../Layers/SliceOutlineRenderer.h" |
85 | 26 |
27 static const double THIN_SLICE_THICKNESS = 100.0 * std::numeric_limits<double>::epsilon(); | |
66 | 28 |
29 namespace OrthancStone | |
30 { | |
31 class LayerWidget::Scene : public boost::noncopyable | |
32 { | |
33 private: | |
110
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34 CoordinateSystem3D slice_; |
66 | 35 size_t countMissing_; |
36 std::vector<ILayerRenderer*> renderers_; | |
37 | |
38 void DeleteLayer(size_t index) | |
39 { | |
40 if (index >= renderers_.size()) | |
41 { | |
42 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
43 } | |
44 | |
45 assert(countMissing_ <= renderers_.size()); | |
46 | |
47 if (renderers_[index] != NULL) | |
48 { | |
49 assert(countMissing_ < renderers_.size()); | |
50 delete renderers_[index]; | |
51 renderers_[index] = NULL; | |
52 countMissing_++; | |
53 } | |
54 } | |
55 | |
56 public: | |
110
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57 Scene(const CoordinateSystem3D& slice, |
66 | 58 size_t countLayers) : |
59 slice_(slice), | |
60 countMissing_(countLayers), | |
61 renderers_(countLayers, NULL) | |
62 { | |
63 } | |
64 | |
65 ~Scene() | |
66 { | |
67 for (size_t i = 0; i < renderers_.size(); i++) | |
68 { | |
69 DeleteLayer(i); | |
70 } | |
71 } | |
72 | |
73 void SetLayer(size_t index, | |
74 ILayerRenderer* renderer) // Takes ownership | |
75 { | |
76 if (renderer == NULL) | |
77 { | |
78 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
79 } | |
80 | |
81 DeleteLayer(index); | |
82 | |
83 renderers_[index] = renderer; | |
84 countMissing_--; | |
85 } | |
86 | |
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87 const CoordinateSystem3D& GetSlice() const |
66 | 88 { |
89 return slice_; | |
90 } | |
91 | |
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92 bool HasRenderer(size_t index) |
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93 { |
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94 return renderers_[index] != NULL; |
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95 } |
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96 |
66 | 97 bool IsComplete() const |
98 { | |
99 return countMissing_ == 0; | |
100 } | |
101 | |
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102 unsigned int GetCountMissing() const |
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103 { |
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104 return countMissing_; |
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105 } |
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106 |
66 | 107 bool RenderScene(CairoContext& context, |
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108 const ViewportGeometry& view, |
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109 const CoordinateSystem3D& viewportSlice) |
66 | 110 { |
111 bool fullQuality = true; | |
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112 cairo_t *cr = context.GetObject(); |
66 | 113 |
114 for (size_t i = 0; i < renderers_.size(); i++) | |
115 { | |
97
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116 if (renderers_[i] != NULL) |
66 | 117 { |
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118 const CoordinateSystem3D& frameSlice = renderers_[i]->GetLayerSlice(); |
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119 |
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120 double x0, y0, x1, y1, x2, y2; |
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121 viewportSlice.ProjectPoint(x0, y0, frameSlice.GetOrigin()); |
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122 viewportSlice.ProjectPoint(x1, y1, frameSlice.GetOrigin() + frameSlice.GetAxisX()); |
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123 viewportSlice.ProjectPoint(x2, y2, frameSlice.GetOrigin() + frameSlice.GetAxisY()); |
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124 |
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125 /** |
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126 * Now we solve the system of linear equations Ax + b = x', given: |
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127 * A [0 ; 0] + b = [x0 ; y0] |
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128 * A [1 ; 0] + b = [x1 ; y1] |
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129 * A [0 ; 1] + b = [x2 ; y2] |
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130 * <=> |
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131 * b = [x0 ; y0] |
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132 * A [1 ; 0] = [x1 ; y1] - b = [x1 - x0 ; y1 - y0] |
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133 * A [0 ; 1] = [x2 ; y2] - b = [x2 - x0 ; y2 - y0] |
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134 * <=> |
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135 * b = [x0 ; y0] |
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136 * [a11 ; a21] = [x1 - x0 ; y1 - y0] |
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137 * [a12 ; a22] = [x2 - x0 ; y2 - y0] |
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138 **/ |
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139 |
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140 cairo_matrix_t transform; |
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141 cairo_matrix_init(&transform, x1 - x0, y1 - y0, x2 - x0, y2 - y0, x0, y0); |
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142 |
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143 cairo_save(cr); |
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144 cairo_transform(cr, &transform); |
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145 |
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146 if (!renderers_[i]->RenderLayer(context, view)) |
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147 { |
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148 cairo_restore(cr); |
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149 return false; |
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150 } |
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151 |
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152 cairo_restore(cr); |
66 | 153 } |
154 | |
155 if (renderers_[i] != NULL && | |
156 !renderers_[i]->IsFullQuality()) | |
157 { | |
158 fullQuality = false; | |
159 } | |
160 } | |
161 | |
162 if (!fullQuality) | |
163 { | |
164 double x, y; | |
165 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
166 | |
167 cairo_translate(cr, x, y); | |
95 | 168 |
169 #if 1 | |
170 double s = 5.0 / view.GetZoom(); | |
171 cairo_rectangle(cr, -s, -s, 2.0 * s, 2.0 * s); | |
172 #else | |
173 // TODO Drawing circles makes WebAssembly crash! | |
66 | 174 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); |
95 | 175 #endif |
176 | |
66 | 177 cairo_set_line_width(cr, 2.0 / view.GetZoom()); |
178 cairo_set_source_rgb(cr, 1, 1, 1); | |
179 cairo_stroke_preserve(cr); | |
95 | 180 cairo_set_source_rgb(cr, 1, 0, 0); |
66 | 181 cairo_fill(cr); |
182 } | |
183 | |
184 return true; | |
185 } | |
186 | |
187 void SetLayerStyle(size_t index, | |
188 const RenderStyle& style) | |
189 { | |
190 if (renderers_[index] != NULL) | |
191 { | |
192 renderers_[index]->SetLayerStyle(style); | |
193 } | |
194 } | |
195 }; | |
196 | |
197 | |
198 bool LayerWidget::LookupLayer(size_t& index /* out */, | |
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199 const ILayerSource& layer) const |
66 | 200 { |
201 LayersIndex::const_iterator found = layersIndex_.find(&layer); | |
202 | |
203 if (found == layersIndex_.end()) | |
204 { | |
205 return false; | |
206 } | |
207 else | |
208 { | |
209 index = found->second; | |
210 assert(index < layers_.size() && | |
211 layers_[index] == &layer); | |
212 return true; | |
213 } | |
214 } | |
215 | |
85 | 216 |
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217 void LayerWidget::GetLayerExtent(Extent2D& extent, |
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218 ILayerSource& source) const |
85 | 219 { |
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220 extent.Reset(); |
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221 |
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222 std::vector<Vector> points; |
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223 if (source.GetExtent(points, slice_)) |
85 | 224 { |
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225 for (size_t i = 0; i < points.size(); i++) |
85 | 226 { |
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227 double x, y; |
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228 slice_.ProjectPoint(x, y, points[i]); |
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229 extent.AddPoint(x, y); |
85 | 230 } |
231 } | |
232 } | |
233 | |
66 | 234 |
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235 Extent2D LayerWidget::GetSceneExtent() |
66 | 236 { |
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237 Extent2D sceneExtent; |
66 | 238 |
239 for (size_t i = 0; i < layers_.size(); i++) | |
240 { | |
241 assert(layers_[i] != NULL); | |
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242 Extent2D layerExtent; |
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243 GetLayerExtent(layerExtent, *layers_[i]); |
66 | 244 |
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245 sceneExtent.Union(layerExtent); |
66 | 246 } |
247 | |
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248 return sceneExtent; |
66 | 249 } |
250 | |
251 | |
252 bool LayerWidget::RenderScene(CairoContext& context, | |
253 const ViewportGeometry& view) | |
254 { | |
255 if (currentScene_.get() != NULL) | |
256 { | |
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257 return currentScene_->RenderScene(context, view, slice_); |
66 | 258 } |
259 else | |
260 { | |
261 return true; | |
262 } | |
263 } | |
264 | |
265 | |
266 void LayerWidget::ResetPendingScene() | |
267 { | |
268 pendingScene_.reset(new Scene(slice_, layers_.size())); | |
269 } | |
270 | |
271 | |
272 void LayerWidget::UpdateLayer(size_t index, | |
273 ILayerRenderer* renderer, | |
77 | 274 const Slice& slice) |
66 | 275 { |
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276 LOG(INFO) << "Updating layer " << index; |
66 | 277 |
278 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
279 | |
280 if (renderer == NULL) | |
281 { | |
282 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
283 } | |
284 | |
285 if (index >= layers_.size()) | |
286 { | |
287 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
288 } | |
289 | |
290 assert(layers_.size() == styles_.size()); | |
291 renderer->SetLayerStyle(styles_[index]); | |
292 | |
293 if (currentScene_.get() != NULL && | |
78 | 294 slice.ContainsPlane(currentScene_->GetSlice())) |
66 | 295 { |
296 currentScene_->SetLayer(index, tmp.release()); | |
297 NotifyChange(); | |
298 } | |
299 else if (pendingScene_.get() != NULL && | |
78 | 300 slice.ContainsPlane(pendingScene_->GetSlice())) |
66 | 301 { |
302 pendingScene_->SetLayer(index, tmp.release()); | |
303 | |
304 if (currentScene_.get() == NULL || | |
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305 !currentScene_->IsComplete() || |
66 | 306 pendingScene_->IsComplete()) |
307 { | |
308 currentScene_ = pendingScene_; | |
309 NotifyChange(); | |
310 } | |
311 } | |
312 } | |
313 | |
314 | |
315 LayerWidget::LayerWidget() : | |
78 | 316 started_(false) |
66 | 317 { |
318 SetBackgroundCleared(true); | |
319 } | |
320 | |
321 | |
322 LayerWidget::~LayerWidget() | |
323 { | |
324 for (size_t i = 0; i < layers_.size(); i++) | |
325 { | |
326 delete layers_[i]; | |
327 } | |
328 } | |
329 | |
330 | |
331 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
332 { | |
333 if (layer == NULL) | |
334 { | |
335 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
336 } | |
337 | |
338 size_t index = layers_.size(); | |
339 layers_.push_back(layer); | |
340 styles_.push_back(RenderStyle()); | |
341 layersIndex_[layer] = index; | |
342 | |
343 ResetPendingScene(); | |
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344 layer->Register(*this); |
66 | 345 |
103 | 346 ResetChangedLayers(); |
347 | |
66 | 348 return index; |
349 } | |
350 | |
351 | |
352 void LayerWidget::SetLayerStyle(size_t layer, | |
353 const RenderStyle& style) | |
354 { | |
355 if (layer >= layers_.size()) | |
356 { | |
357 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
358 } | |
359 | |
360 assert(layers_.size() == styles_.size()); | |
361 styles_[layer] = style; | |
362 | |
363 if (currentScene_.get() != NULL) | |
364 { | |
365 currentScene_->SetLayerStyle(layer, style); | |
366 } | |
367 | |
368 if (pendingScene_.get() != NULL) | |
369 { | |
370 pendingScene_->SetLayerStyle(layer, style); | |
371 } | |
372 | |
373 NotifyChange(); | |
374 } | |
375 | |
376 | |
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377 void LayerWidget::SetSlice(const CoordinateSystem3D& slice) |
66 | 378 { |
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379 LOG(INFO) << "Setting slice origin: (" << slice.GetOrigin()[0] |
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380 << "," << slice.GetOrigin()[1] |
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381 << "," << slice.GetOrigin()[2] << ")"; |
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382 |
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383 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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384 |
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385 //if (!displayedSlice.ContainsPlane(slice)) |
66 | 386 { |
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387 if (currentScene_.get() == NULL || |
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388 (pendingScene_.get() != NULL && |
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389 pendingScene_->IsComplete())) |
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390 { |
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391 currentScene_ = pendingScene_; |
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392 } |
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393 |
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394 slice_ = slice; |
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395 ResetPendingScene(); |
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396 |
92 | 397 InvalidateAllLayers(); // TODO Removing this line avoid loading twice the image in WASM |
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398 } |
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399 } |
66 | 400 |
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401 |
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402 void LayerWidget::NotifyGeometryReady(const ILayerSource& source) |
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403 { |
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404 size_t i; |
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405 if (LookupLayer(i, source)) |
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406 { |
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407 LOG(INFO) << "Geometry ready for layer " << i; |
103 | 408 |
409 changedLayers_[i] = true; | |
410 //layers_[i]->ScheduleLayerCreation(slice_); | |
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411 } |
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412 } |
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413 |
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414 |
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415 void LayerWidget::NotifyGeometryError(const ILayerSource& source) |
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416 { |
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417 LOG(ERROR) << "Cannot get geometry"; |
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418 } |
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419 |
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420 |
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421 void LayerWidget::InvalidateAllLayers() |
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422 { |
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423 for (size_t i = 0; i < layers_.size(); i++) |
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424 { |
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425 assert(layers_[i] != NULL); |
103 | 426 changedLayers_[i] = true; |
427 | |
428 //layers_[i]->ScheduleLayerCreation(slice_); | |
66 | 429 } |
430 } | |
431 | |
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432 |
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433 void LayerWidget::InvalidateLayer(size_t layer) |
66 | 434 { |
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435 if (layer >= layers_.size()) |
83 | 436 { |
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437 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
83 | 438 } |
66 | 439 |
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440 assert(layers_[layer] != NULL); |
103 | 441 changedLayers_[layer] = true; |
442 | |
443 //layers_[layer]->ScheduleLayerCreation(slice_); | |
77 | 444 } |
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445 |
77 | 446 |
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447 void LayerWidget::NotifyContentChange(const ILayerSource& source) |
66 | 448 { |
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449 size_t index; |
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450 if (LookupLayer(index, source)) |
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451 { |
103 | 452 InvalidateLayer(index); |
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453 } |
66 | 454 } |
455 | |
456 | |
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457 void LayerWidget::NotifySliceChange(const ILayerSource& source, |
77 | 458 const Slice& slice) |
66 | 459 { |
77 | 460 if (slice.ContainsPlane(slice_)) |
66 | 461 { |
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462 size_t index; |
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463 if (LookupLayer(index, source)) |
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464 { |
103 | 465 InvalidateLayer(index); |
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466 } |
66 | 467 } |
468 } | |
469 | |
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470 |
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471 void LayerWidget::NotifyLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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472 const ILayerSource& source, |
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473 const Slice& slice, |
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474 bool isError) |
66 | 475 { |
476 size_t index; | |
99 | 477 if (slice.IsValid() && |
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478 LookupLayer(index, source) && |
85 | 479 slice.ContainsPlane(slice_)) // Whether the slice comes from an older request |
66 | 480 { |
96
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481 if (isError) |
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482 { |
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483 LOG(ERROR) << "Using error renderer on layer " << index; |
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484 } |
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485 else |
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486 { |
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487 LOG(INFO) << "Renderer ready for layer " << index; |
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488 } |
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489 |
99 | 490 if (renderer.get() != NULL) |
491 { | |
492 UpdateLayer(index, renderer.release(), slice); | |
493 } | |
494 else if (isError) | |
495 { | |
496 UpdateLayer(index, new SliceOutlineRenderer(slice), slice); | |
497 } | |
66 | 498 } |
499 } | |
103 | 500 |
501 | |
502 void LayerWidget::ResetChangedLayers() | |
503 { | |
504 changedLayers_.resize(layers_.size()); | |
505 | |
506 for (size_t i = 0; i < changedLayers_.size(); i++) | |
507 { | |
508 changedLayers_[i] = false; | |
509 } | |
510 } | |
511 | |
512 | |
513 void LayerWidget::UpdateContent() | |
514 { | |
515 assert(changedLayers_.size() <= layers_.size()); | |
516 | |
517 for (size_t i = 0; i < changedLayers_.size(); i++) | |
518 { | |
519 if (changedLayers_[i]) | |
520 { | |
521 layers_[i]->ScheduleLayerCreation(slice_); | |
522 } | |
523 } | |
524 | |
525 ResetChangedLayers(); | |
526 } | |
66 | 527 } |