Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 103:474d85e76499 wasm
mpr
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 31 May 2017 18:05:33 +0200 |
parents | efd9ef2b67f1 |
children | 53bd9277b025 |
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: | |
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 | |
93
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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 | |
89
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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, |
97
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108 const ViewportGeometry& view, |
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109 const SliceGeometry& viewportSlice) |
66 | 110 { |
111 bool fullQuality = true; | |
97
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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 { |
97
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118 const SliceGeometry& 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 |
97
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217 void LayerWidget::GetLayerExtent(Extent& extent, |
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218 ILayerSource& source) const |
85 | 219 { |
97
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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 |
235 void LayerWidget::GetSceneExtent(double& x1, | |
236 double& y1, | |
237 double& x2, | |
238 double& y2) | |
239 { | |
97
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240 Extent sceneExtent; |
66 | 241 |
242 for (size_t i = 0; i < layers_.size(); i++) | |
243 { | |
244 assert(layers_[i] != NULL); | |
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245 Extent layerExtent; |
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246 GetLayerExtent(layerExtent, *layers_[i]); |
66 | 247 |
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248 sceneExtent.Union(layerExtent); |
66 | 249 } |
250 | |
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251 if (sceneExtent.IsEmpty()) |
66 | 252 { |
253 // Set a default extent of (-1,-1) -> (0,0) | |
254 x1 = -1; | |
255 y1 = -1; | |
256 x2 = 1; | |
257 y2 = 1; | |
258 } | |
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259 else |
66 | 260 { |
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261 x1 = sceneExtent.GetX1(); |
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262 y1 = sceneExtent.GetY1(); |
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263 x2 = sceneExtent.GetX2(); |
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264 y2 = sceneExtent.GetY2(); |
66 | 265 |
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266 // Ensure the extent is non-empty |
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267 if (x1 >= x2) |
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268 { |
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269 double tmp = x1; |
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270 x1 = tmp - 0.5; |
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271 x2 = tmp + 0.5; |
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272 } |
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273 |
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274 if (y1 >= y2) |
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275 { |
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276 double tmp = y1; |
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277 y1 = tmp - 0.5; |
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278 y2 = tmp + 0.5; |
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279 } |
66 | 280 } |
281 } | |
282 | |
283 | |
284 bool LayerWidget::RenderScene(CairoContext& context, | |
285 const ViewportGeometry& view) | |
286 { | |
287 if (currentScene_.get() != NULL) | |
288 { | |
97
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289 return currentScene_->RenderScene(context, view, slice_); |
66 | 290 } |
291 else | |
292 { | |
293 return true; | |
294 } | |
295 } | |
296 | |
297 | |
298 void LayerWidget::ResetPendingScene() | |
299 { | |
300 pendingScene_.reset(new Scene(slice_, layers_.size())); | |
301 } | |
302 | |
303 | |
304 void LayerWidget::UpdateLayer(size_t index, | |
305 ILayerRenderer* renderer, | |
77 | 306 const Slice& slice) |
66 | 307 { |
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308 LOG(INFO) << "Updating layer " << index; |
66 | 309 |
310 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
311 | |
312 if (renderer == NULL) | |
313 { | |
314 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
315 } | |
316 | |
317 if (index >= layers_.size()) | |
318 { | |
319 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
320 } | |
321 | |
322 assert(layers_.size() == styles_.size()); | |
323 renderer->SetLayerStyle(styles_[index]); | |
324 | |
325 if (currentScene_.get() != NULL && | |
78 | 326 slice.ContainsPlane(currentScene_->GetSlice())) |
66 | 327 { |
328 currentScene_->SetLayer(index, tmp.release()); | |
329 NotifyChange(); | |
330 } | |
331 else if (pendingScene_.get() != NULL && | |
78 | 332 slice.ContainsPlane(pendingScene_->GetSlice())) |
66 | 333 { |
334 pendingScene_->SetLayer(index, tmp.release()); | |
335 | |
336 if (currentScene_.get() == NULL || | |
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337 !currentScene_->IsComplete() || |
66 | 338 pendingScene_->IsComplete()) |
339 { | |
340 currentScene_ = pendingScene_; | |
341 NotifyChange(); | |
342 } | |
343 } | |
344 } | |
345 | |
346 | |
347 LayerWidget::LayerWidget() : | |
78 | 348 started_(false) |
66 | 349 { |
350 SetBackgroundCleared(true); | |
351 } | |
352 | |
353 | |
354 LayerWidget::~LayerWidget() | |
355 { | |
356 for (size_t i = 0; i < layers_.size(); i++) | |
357 { | |
358 delete layers_[i]; | |
359 } | |
360 } | |
361 | |
362 | |
363 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
364 { | |
365 if (layer == NULL) | |
366 { | |
367 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
368 } | |
369 | |
370 size_t index = layers_.size(); | |
371 layers_.push_back(layer); | |
372 styles_.push_back(RenderStyle()); | |
373 layersIndex_[layer] = index; | |
374 | |
375 ResetPendingScene(); | |
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376 layer->Register(*this); |
66 | 377 |
103 | 378 ResetChangedLayers(); |
379 | |
66 | 380 return index; |
381 } | |
382 | |
383 | |
384 void LayerWidget::SetLayerStyle(size_t layer, | |
385 const RenderStyle& style) | |
386 { | |
387 if (layer >= layers_.size()) | |
388 { | |
389 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
390 } | |
391 | |
392 assert(layers_.size() == styles_.size()); | |
393 styles_[layer] = style; | |
394 | |
395 if (currentScene_.get() != NULL) | |
396 { | |
397 currentScene_->SetLayerStyle(layer, style); | |
398 } | |
399 | |
400 if (pendingScene_.get() != NULL) | |
401 { | |
402 pendingScene_->SetLayerStyle(layer, style); | |
403 } | |
404 | |
405 NotifyChange(); | |
406 } | |
407 | |
408 | |
78 | 409 void LayerWidget::SetSlice(const SliceGeometry& slice) |
66 | 410 { |
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411 LOG(INFO) << "Setting slice origin: (" << slice.GetOrigin()[0] |
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412 << "," << slice.GetOrigin()[1] |
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413 << "," << slice.GetOrigin()[2] << ")"; |
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414 |
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415 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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416 |
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417 //if (!displayedSlice.ContainsPlane(slice)) |
66 | 418 { |
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419 if (currentScene_.get() == NULL || |
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420 (pendingScene_.get() != NULL && |
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421 pendingScene_->IsComplete())) |
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422 { |
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423 currentScene_ = pendingScene_; |
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424 } |
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425 |
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426 slice_ = slice; |
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427 ResetPendingScene(); |
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428 |
92 | 429 InvalidateAllLayers(); // TODO Removing this line avoid loading twice the image in WASM |
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430 } |
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431 } |
66 | 432 |
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433 |
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434 void LayerWidget::NotifyGeometryReady(const ILayerSource& source) |
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435 { |
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436 size_t i; |
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437 if (LookupLayer(i, source)) |
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438 { |
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439 LOG(INFO) << "Geometry ready for layer " << i; |
103 | 440 |
441 changedLayers_[i] = true; | |
442 //layers_[i]->ScheduleLayerCreation(slice_); | |
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443 } |
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444 } |
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445 |
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446 |
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447 void LayerWidget::NotifyGeometryError(const ILayerSource& source) |
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448 { |
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449 LOG(ERROR) << "Cannot get geometry"; |
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450 } |
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451 |
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452 |
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453 void LayerWidget::InvalidateAllLayers() |
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454 { |
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455 for (size_t i = 0; i < layers_.size(); i++) |
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456 { |
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457 assert(layers_[i] != NULL); |
103 | 458 changedLayers_[i] = true; |
459 | |
460 //layers_[i]->ScheduleLayerCreation(slice_); | |
66 | 461 } |
462 } | |
463 | |
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464 |
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465 void LayerWidget::InvalidateLayer(size_t layer) |
66 | 466 { |
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467 if (layer >= layers_.size()) |
83 | 468 { |
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469 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
83 | 470 } |
66 | 471 |
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472 assert(layers_[layer] != NULL); |
103 | 473 changedLayers_[layer] = true; |
474 | |
475 //layers_[layer]->ScheduleLayerCreation(slice_); | |
77 | 476 } |
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477 |
77 | 478 |
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479 void LayerWidget::NotifyContentChange(const ILayerSource& source) |
66 | 480 { |
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481 size_t index; |
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482 if (LookupLayer(index, source)) |
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483 { |
103 | 484 InvalidateLayer(index); |
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485 } |
66 | 486 } |
487 | |
488 | |
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489 void LayerWidget::NotifySliceChange(const ILayerSource& source, |
77 | 490 const Slice& slice) |
66 | 491 { |
77 | 492 if (slice.ContainsPlane(slice_)) |
66 | 493 { |
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494 size_t index; |
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495 if (LookupLayer(index, source)) |
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496 { |
103 | 497 InvalidateLayer(index); |
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498 } |
66 | 499 } |
500 } | |
501 | |
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502 |
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503 void LayerWidget::NotifyLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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504 const ILayerSource& source, |
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505 const Slice& slice, |
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506 bool isError) |
66 | 507 { |
508 size_t index; | |
99 | 509 if (slice.IsValid() && |
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510 LookupLayer(index, source) && |
85 | 511 slice.ContainsPlane(slice_)) // Whether the slice comes from an older request |
66 | 512 { |
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513 if (isError) |
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514 { |
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515 LOG(ERROR) << "Using error renderer on layer " << index; |
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516 } |
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517 else |
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518 { |
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519 LOG(INFO) << "Renderer ready for layer " << index; |
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520 } |
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521 |
99 | 522 if (renderer.get() != NULL) |
523 { | |
524 UpdateLayer(index, renderer.release(), slice); | |
525 } | |
526 else if (isError) | |
527 { | |
528 UpdateLayer(index, new SliceOutlineRenderer(slice), slice); | |
529 } | |
66 | 530 } |
531 } | |
103 | 532 |
533 | |
534 void LayerWidget::ResetChangedLayers() | |
535 { | |
536 changedLayers_.resize(layers_.size()); | |
537 | |
538 for (size_t i = 0; i < changedLayers_.size(); i++) | |
539 { | |
540 changedLayers_[i] = false; | |
541 } | |
542 } | |
543 | |
544 | |
545 void LayerWidget::UpdateContent() | |
546 { | |
547 assert(changedLayers_.size() <= layers_.size()); | |
548 | |
549 for (size_t i = 0; i < changedLayers_.size(); i++) | |
550 { | |
551 if (changedLayers_[i]) | |
552 { | |
553 layers_[i]->ScheduleLayerCreation(slice_); | |
554 } | |
555 } | |
556 | |
557 ResetChangedLayers(); | |
558 } | |
66 | 559 } |