Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 93:5945e81734a3 wasm
decoding of JPEG images
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 29 May 2017 17:28:31 +0200 |
parents | 961ee171d933 |
children | f47349f4815c |
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" | |
85 | 25 #include "../Layers/MissingLayerRenderer.h" |
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: | |
34 SliceGeometry slice_; | |
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: | |
57 Scene(const SliceGeometry& slice, | |
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 | |
87 const SliceGeometry& GetSlice() const | |
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, |
108 const ViewportGeometry& view) | |
109 { | |
110 bool fullQuality = true; | |
111 | |
112 for (size_t i = 0; i < renderers_.size(); i++) | |
113 { | |
114 if (renderers_[i] != NULL && | |
77 | 115 !renderers_[i]->RenderLayer(context, view, slice_)) |
66 | 116 { |
117 return false; | |
118 } | |
119 | |
120 if (renderers_[i] != NULL && | |
121 !renderers_[i]->IsFullQuality()) | |
122 { | |
123 fullQuality = false; | |
124 } | |
125 } | |
126 | |
127 if (!fullQuality) | |
128 { | |
129 double x, y; | |
130 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
131 | |
132 cairo_t *cr = context.GetObject(); | |
133 cairo_translate(cr, x, y); | |
134 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); | |
135 cairo_set_line_width(cr, 2.0 / view.GetZoom()); | |
136 cairo_set_source_rgb(cr, 1, 1, 1); | |
137 cairo_stroke_preserve(cr); | |
138 cairo_set_source_rgb(cr, 1, 0, 0); | |
139 cairo_fill(cr); | |
140 } | |
141 | |
142 return true; | |
143 } | |
144 | |
145 void SetLayerStyle(size_t index, | |
146 const RenderStyle& style) | |
147 { | |
148 if (renderers_[index] != NULL) | |
149 { | |
150 renderers_[index]->SetLayerStyle(style); | |
151 } | |
152 } | |
153 }; | |
154 | |
155 | |
156 bool LayerWidget::LookupLayer(size_t& index /* out */, | |
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157 const ILayerSource& layer) const |
66 | 158 { |
159 LayersIndex::const_iterator found = layersIndex_.find(&layer); | |
160 | |
161 if (found == layersIndex_.end()) | |
162 { | |
163 return false; | |
164 } | |
165 else | |
166 { | |
167 index = found->second; | |
168 assert(index < layers_.size() && | |
169 layers_[index] == &layer); | |
170 return true; | |
171 } | |
172 } | |
173 | |
85 | 174 |
175 bool LayerWidget::GetAndFixExtent(double& x1, | |
176 double& y1, | |
177 double& x2, | |
178 double& y2, | |
179 ILayerSource& source) const | |
180 { | |
181 if (source.GetExtent(x1, y1, x2, y2, slice_)) | |
182 { | |
183 if (x1 > x2) | |
184 { | |
185 std::swap(x1, x2); | |
186 } | |
187 | |
188 if (y1 > y2) | |
189 { | |
190 std::swap(y1, y2); | |
191 } | |
192 | |
193 return true; | |
194 } | |
195 else | |
196 { | |
197 return false; | |
198 } | |
199 } | |
200 | |
66 | 201 |
202 void LayerWidget::GetSceneExtent(double& x1, | |
203 double& y1, | |
204 double& x2, | |
205 double& y2) | |
206 { | |
207 bool first = true; | |
208 | |
209 for (size_t i = 0; i < layers_.size(); i++) | |
210 { | |
211 double ax, ay, bx, by; | |
212 | |
213 assert(layers_[i] != NULL); | |
85 | 214 if (GetAndFixExtent(ax, ay, bx, by, *layers_[i])) |
66 | 215 { |
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216 LOG(INFO) << "Extent of layer " << i << ": (" << ax << "," << ay |
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217 << ")->(" << bx << "," << by << ")"; |
66 | 218 |
219 if (first) | |
220 { | |
221 x1 = ax; | |
222 y1 = ay; | |
223 x2 = bx; | |
224 y2 = by; | |
225 first = false; | |
226 } | |
227 else | |
228 { | |
229 x1 = std::min(x1, ax); | |
230 y1 = std::min(y1, ay); | |
231 x2 = std::max(x2, bx); | |
232 y2 = std::max(y2, by); | |
233 } | |
234 } | |
235 } | |
236 | |
237 if (first) | |
238 { | |
239 // Set a default extent of (-1,-1) -> (0,0) | |
240 x1 = -1; | |
241 y1 = -1; | |
242 x2 = 1; | |
243 y2 = 1; | |
244 } | |
245 | |
246 // Ensure the extent is non-empty | |
247 if (x1 >= x2) | |
248 { | |
249 double tmp = x1; | |
250 x1 = tmp - 0.5; | |
251 x2 = tmp + 0.5; | |
252 } | |
253 | |
254 if (y1 >= y2) | |
255 { | |
256 double tmp = y1; | |
257 y1 = tmp - 0.5; | |
258 y2 = tmp + 0.5; | |
259 } | |
260 } | |
261 | |
262 | |
263 bool LayerWidget::RenderScene(CairoContext& context, | |
264 const ViewportGeometry& view) | |
265 { | |
266 if (currentScene_.get() != NULL) | |
267 { | |
268 return currentScene_->RenderScene(context, view); | |
269 } | |
270 else | |
271 { | |
272 return true; | |
273 } | |
274 } | |
275 | |
276 | |
277 void LayerWidget::ResetPendingScene() | |
278 { | |
279 pendingScene_.reset(new Scene(slice_, layers_.size())); | |
280 } | |
281 | |
282 | |
283 void LayerWidget::UpdateLayer(size_t index, | |
284 ILayerRenderer* renderer, | |
77 | 285 const Slice& slice) |
66 | 286 { |
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287 LOG(INFO) << "Updating layer " << index; |
66 | 288 |
289 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
290 | |
291 if (renderer == NULL) | |
292 { | |
293 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
294 } | |
295 | |
296 if (index >= layers_.size()) | |
297 { | |
298 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
299 } | |
300 | |
301 assert(layers_.size() == styles_.size()); | |
302 renderer->SetLayerStyle(styles_[index]); | |
303 | |
304 if (currentScene_.get() != NULL && | |
78 | 305 slice.ContainsPlane(currentScene_->GetSlice())) |
66 | 306 { |
307 currentScene_->SetLayer(index, tmp.release()); | |
308 NotifyChange(); | |
309 } | |
310 else if (pendingScene_.get() != NULL && | |
78 | 311 slice.ContainsPlane(pendingScene_->GetSlice())) |
66 | 312 { |
313 pendingScene_->SetLayer(index, tmp.release()); | |
314 | |
315 if (currentScene_.get() == NULL || | |
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316 !currentScene_->IsComplete() || |
66 | 317 pendingScene_->IsComplete()) |
318 { | |
319 currentScene_ = pendingScene_; | |
320 NotifyChange(); | |
321 } | |
322 } | |
323 } | |
324 | |
325 | |
326 LayerWidget::LayerWidget() : | |
78 | 327 started_(false) |
66 | 328 { |
329 SetBackgroundCleared(true); | |
330 } | |
331 | |
332 | |
333 LayerWidget::~LayerWidget() | |
334 { | |
335 for (size_t i = 0; i < layers_.size(); i++) | |
336 { | |
337 delete layers_[i]; | |
338 } | |
339 } | |
340 | |
341 | |
342 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
343 { | |
344 if (layer == NULL) | |
345 { | |
346 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
347 } | |
348 | |
349 size_t index = layers_.size(); | |
350 layers_.push_back(layer); | |
351 styles_.push_back(RenderStyle()); | |
352 layersIndex_[layer] = index; | |
353 | |
354 ResetPendingScene(); | |
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355 layer->Register(*this); |
66 | 356 |
357 return index; | |
358 } | |
359 | |
360 | |
361 void LayerWidget::SetLayerStyle(size_t layer, | |
362 const RenderStyle& style) | |
363 { | |
364 if (layer >= layers_.size()) | |
365 { | |
366 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
367 } | |
368 | |
369 assert(layers_.size() == styles_.size()); | |
370 styles_[layer] = style; | |
371 | |
372 if (currentScene_.get() != NULL) | |
373 { | |
374 currentScene_->SetLayerStyle(layer, style); | |
375 } | |
376 | |
377 if (pendingScene_.get() != NULL) | |
378 { | |
379 pendingScene_->SetLayerStyle(layer, style); | |
380 } | |
381 | |
382 NotifyChange(); | |
383 } | |
384 | |
385 | |
78 | 386 void LayerWidget::SetSlice(const SliceGeometry& slice) |
66 | 387 { |
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388 LOG(INFO) << "Setting slice origin: (" << slice.GetOrigin()[0] |
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389 << "," << slice.GetOrigin()[1] |
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390 << "," << slice.GetOrigin()[2] << ")"; |
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391 |
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392 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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393 |
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394 if (!displayedSlice.ContainsPlane(slice)) |
66 | 395 { |
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396 if (currentScene_.get() == NULL || |
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397 (pendingScene_.get() != NULL && |
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398 pendingScene_->IsComplete())) |
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399 { |
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400 currentScene_ = pendingScene_; |
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401 } |
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402 |
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403 slice_ = slice; |
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404 ResetPendingScene(); |
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405 |
92 | 406 InvalidateAllLayers(); // TODO Removing this line avoid loading twice the image in WASM |
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407 } |
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408 } |
66 | 409 |
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410 |
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411 void LayerWidget::NotifyGeometryReady(const ILayerSource& source) |
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412 { |
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413 size_t i; |
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414 if (LookupLayer(i, source)) |
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415 { |
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416 LOG(INFO) << "Geometry ready for layer " << i; |
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417 layers_[i]->ScheduleLayerCreation(slice_); |
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418 } |
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419 } |
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420 |
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421 |
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422 void LayerWidget::NotifyGeometryError(const ILayerSource& source) |
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423 { |
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424 LOG(ERROR) << "Cannot get geometry"; |
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425 } |
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426 |
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427 |
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428 void LayerWidget::InvalidateAllLayers() |
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429 { |
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430 for (size_t i = 0; i < layers_.size(); i++) |
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431 { |
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432 assert(layers_[i] != NULL); |
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433 layers_[i]->ScheduleLayerCreation(slice_); |
66 | 434 } |
435 } | |
436 | |
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437 |
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438 void LayerWidget::InvalidateLayer(size_t layer) |
66 | 439 { |
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440 if (layer >= layers_.size()) |
83 | 441 { |
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442 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
83 | 443 } |
66 | 444 |
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445 assert(layers_[layer] != NULL); |
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446 layers_[layer]->ScheduleLayerCreation(slice_); |
77 | 447 } |
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448 |
77 | 449 |
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450 void LayerWidget::NotifyContentChange(const ILayerSource& source) |
66 | 451 { |
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452 size_t index; |
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453 if (LookupLayer(index, source)) |
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454 { |
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455 layers_[index]->ScheduleLayerCreation(slice_); |
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456 } |
66 | 457 } |
458 | |
459 | |
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460 void LayerWidget::NotifySliceChange(const ILayerSource& source, |
77 | 461 const Slice& slice) |
66 | 462 { |
77 | 463 if (slice.ContainsPlane(slice_)) |
66 | 464 { |
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465 size_t index; |
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466 if (LookupLayer(index, source)) |
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467 { |
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468 layers_[index]->ScheduleLayerCreation(slice_); |
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469 } |
66 | 470 } |
471 } | |
472 | |
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473 |
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474 void LayerWidget::NotifyLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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475 const ILayerSource& source, |
77 | 476 const Slice& slice) |
66 | 477 { |
478 size_t index; | |
85 | 479 if (LookupLayer(index, source) && |
480 slice.ContainsPlane(slice_)) // Whether the slice comes from an older request | |
66 | 481 { |
77 | 482 LOG(INFO) << "Renderer ready for layer " << index; |
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483 UpdateLayer(index, renderer.release(), slice); |
66 | 484 } |
485 } | |
486 | |
487 | |
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488 void LayerWidget::NotifyLayerError(const ILayerSource& source, |
85 | 489 const SliceGeometry& slice) |
66 | 490 { |
85 | 491 size_t index; |
492 | |
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493 Slice expected(slice_, THIN_SLICE_THICKNESS); |
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494 |
85 | 495 if (LookupLayer(index, source) && |
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496 expected.ContainsPlane(slice)) // Whether the slice comes from an older request |
85 | 497 { |
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498 LOG(INFO) << "Unable to load a slice from layer " << index; |
85 | 499 |
500 double x1, y1, x2, y2; | |
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501 if (GetAndFixExtent(x1, y1, x2, y2, *layers_[index])) |
85 | 502 { |
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503 printf("**%d** %f %f %f %f\n", index, x1, y1, x2, y2); |
85 | 504 UpdateLayer(index, new MissingLayerRenderer(x1, y1, x2, y2), Slice(slice, THIN_SLICE_THICKNESS)); |
505 } | |
506 } | |
66 | 507 } |
508 } |