Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 252:40b21c1f8b8d am-2
more usage of IObservable/IObserver
author | am@osimis.io |
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date | Tue, 03 Jul 2018 10:26:56 +0200 |
parents | 192e6e349e69 |
children | c9cf95b49a86 |
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 | |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
66 | 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. | |
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16 * |
66 | 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" |
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25 #include "../Toolbox/GeometryToolbox.h" |
85 | 26 |
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27 #include <Core/Logging.h> |
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28 |
85 | 29 static const double THIN_SLICE_THICKNESS = 100.0 * std::numeric_limits<double>::epsilon(); |
66 | 30 |
31 namespace OrthancStone | |
32 { | |
33 class LayerWidget::Scene : public boost::noncopyable | |
34 { | |
35 private: | |
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36 CoordinateSystem3D slice_; |
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37 double thickness_; |
66 | 38 size_t countMissing_; |
39 std::vector<ILayerRenderer*> renderers_; | |
40 | |
41 void DeleteLayer(size_t index) | |
42 { | |
43 if (index >= renderers_.size()) | |
44 { | |
45 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
46 } | |
47 | |
48 assert(countMissing_ <= renderers_.size()); | |
49 | |
50 if (renderers_[index] != NULL) | |
51 { | |
52 assert(countMissing_ < renderers_.size()); | |
53 delete renderers_[index]; | |
54 renderers_[index] = NULL; | |
55 countMissing_++; | |
56 } | |
57 } | |
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58 |
66 | 59 public: |
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60 Scene(const CoordinateSystem3D& slice, |
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61 double thickness, |
66 | 62 size_t countLayers) : |
63 slice_(slice), | |
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64 thickness_(thickness), |
66 | 65 countMissing_(countLayers), |
66 renderers_(countLayers, NULL) | |
67 { | |
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68 if (thickness <= 0) |
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69 { |
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70 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
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71 } |
66 | 72 } |
73 | |
74 ~Scene() | |
75 { | |
76 for (size_t i = 0; i < renderers_.size(); i++) | |
77 { | |
78 DeleteLayer(i); | |
79 } | |
80 } | |
81 | |
82 void SetLayer(size_t index, | |
83 ILayerRenderer* renderer) // Takes ownership | |
84 { | |
85 if (renderer == NULL) | |
86 { | |
87 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
88 } | |
89 | |
90 DeleteLayer(index); | |
91 | |
92 renderers_[index] = renderer; | |
93 countMissing_--; | |
94 } | |
95 | |
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96 const CoordinateSystem3D& GetSlice() const |
66 | 97 { |
98 return slice_; | |
99 } | |
100 | |
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101 bool HasRenderer(size_t index) |
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102 { |
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103 return renderers_[index] != NULL; |
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104 } |
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105 |
66 | 106 bool IsComplete() const |
107 { | |
108 return countMissing_ == 0; | |
109 } | |
110 | |
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111 unsigned int GetCountMissing() const |
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112 { |
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113 return countMissing_; |
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114 } |
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115 |
66 | 116 bool RenderScene(CairoContext& context, |
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117 const ViewportGeometry& view, |
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118 const CoordinateSystem3D& viewportSlice) |
66 | 119 { |
120 bool fullQuality = true; | |
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121 cairo_t *cr = context.GetObject(); |
66 | 122 |
123 for (size_t i = 0; i < renderers_.size(); i++) | |
124 { | |
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125 if (renderers_[i] != NULL) |
66 | 126 { |
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127 const CoordinateSystem3D& frameSlice = renderers_[i]->GetLayerSlice(); |
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128 |
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129 double x0, y0, x1, y1, x2, y2; |
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130 viewportSlice.ProjectPoint(x0, y0, frameSlice.GetOrigin()); |
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131 viewportSlice.ProjectPoint(x1, y1, frameSlice.GetOrigin() + frameSlice.GetAxisX()); |
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132 viewportSlice.ProjectPoint(x2, y2, frameSlice.GetOrigin() + frameSlice.GetAxisY()); |
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133 |
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134 /** |
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135 * Now we solve the system of linear equations Ax + b = x', given: |
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136 * A [0 ; 0] + b = [x0 ; y0] |
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137 * A [1 ; 0] + b = [x1 ; y1] |
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138 * A [0 ; 1] + b = [x2 ; y2] |
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139 * <=> |
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140 * b = [x0 ; y0] |
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141 * A [1 ; 0] = [x1 ; y1] - b = [x1 - x0 ; y1 - y0] |
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142 * A [0 ; 1] = [x2 ; y2] - b = [x2 - x0 ; y2 - y0] |
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143 * <=> |
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144 * b = [x0 ; y0] |
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145 * [a11 ; a21] = [x1 - x0 ; y1 - y0] |
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146 * [a12 ; a22] = [x2 - x0 ; y2 - y0] |
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147 **/ |
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148 |
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149 cairo_matrix_t transform; |
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150 cairo_matrix_init(&transform, x1 - x0, y1 - y0, x2 - x0, y2 - y0, x0, y0); |
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151 |
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152 cairo_save(cr); |
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153 cairo_transform(cr, &transform); |
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154 |
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155 if (!renderers_[i]->RenderLayer(context, view)) |
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156 { |
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157 cairo_restore(cr); |
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158 return false; |
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159 } |
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160 |
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161 cairo_restore(cr); |
66 | 162 } |
163 | |
164 if (renderers_[i] != NULL && | |
165 !renderers_[i]->IsFullQuality()) | |
166 { | |
167 fullQuality = false; | |
168 } | |
169 } | |
170 | |
171 if (!fullQuality) | |
172 { | |
173 double x, y; | |
174 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
175 | |
176 cairo_translate(cr, x, y); | |
95 | 177 |
178 #if 1 | |
179 double s = 5.0 / view.GetZoom(); | |
180 cairo_rectangle(cr, -s, -s, 2.0 * s, 2.0 * s); | |
181 #else | |
182 // TODO Drawing circles makes WebAssembly crash! | |
66 | 183 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); |
95 | 184 #endif |
185 | |
66 | 186 cairo_set_line_width(cr, 2.0 / view.GetZoom()); |
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187 cairo_set_source_rgb(cr, 1, 1, 1); |
66 | 188 cairo_stroke_preserve(cr); |
95 | 189 cairo_set_source_rgb(cr, 1, 0, 0); |
66 | 190 cairo_fill(cr); |
191 } | |
192 | |
193 return true; | |
194 } | |
195 | |
196 void SetLayerStyle(size_t index, | |
197 const RenderStyle& style) | |
198 { | |
199 if (renderers_[index] != NULL) | |
200 { | |
201 renderers_[index]->SetLayerStyle(style); | |
202 } | |
203 } | |
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204 |
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205 bool ContainsPlane(const CoordinateSystem3D& slice) const |
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206 { |
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207 bool isOpposite; |
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208 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, |
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209 slice.GetNormal(), |
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210 slice_.GetNormal())) |
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211 { |
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212 return false; |
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213 } |
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214 else |
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215 { |
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216 double z = (slice_.ProjectAlongNormal(slice.GetOrigin()) - |
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217 slice_.ProjectAlongNormal(slice_.GetOrigin())); |
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218 |
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219 if (z < 0) |
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220 { |
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221 z = -z; |
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222 } |
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223 |
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224 return z <= thickness_; |
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225 } |
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226 } |
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227 |
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228 double GetThickness() const |
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229 { |
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230 return thickness_; |
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231 } |
66 | 232 }; |
233 | |
234 | |
235 bool LayerWidget::LookupLayer(size_t& index /* out */, | |
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236 const ILayerSource& layer) const |
66 | 237 { |
238 LayersIndex::const_iterator found = layersIndex_.find(&layer); | |
239 | |
240 if (found == layersIndex_.end()) | |
241 { | |
242 return false; | |
243 } | |
244 else | |
245 { | |
246 index = found->second; | |
247 assert(index < layers_.size() && | |
248 layers_[index] == &layer); | |
249 return true; | |
250 } | |
251 } | |
251
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252 |
85 | 253 |
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254 void LayerWidget::GetLayerExtent(Extent2D& extent, |
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255 ILayerSource& source) const |
85 | 256 { |
97
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257 extent.Reset(); |
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258 |
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259 std::vector<Vector> points; |
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260 if (source.GetExtent(points, slice_)) |
85 | 261 { |
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262 for (size_t i = 0; i < points.size(); i++) |
85 | 263 { |
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264 double x, y; |
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265 slice_.ProjectPoint(x, y, points[i]); |
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266 extent.AddPoint(x, y); |
85 | 267 } |
268 } | |
269 } | |
270 | |
251
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271 |
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272 Extent2D LayerWidget::GetSceneExtent() |
66 | 273 { |
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274 Extent2D sceneExtent; |
66 | 275 |
276 for (size_t i = 0; i < layers_.size(); i++) | |
277 { | |
278 assert(layers_[i] != NULL); | |
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279 Extent2D layerExtent; |
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280 GetLayerExtent(layerExtent, *layers_[i]); |
66 | 281 |
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282 sceneExtent.Union(layerExtent); |
66 | 283 } |
284 | |
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285 return sceneExtent; |
66 | 286 } |
287 | |
288 | |
289 bool LayerWidget::RenderScene(CairoContext& context, | |
290 const ViewportGeometry& view) | |
291 { | |
292 if (currentScene_.get() != NULL) | |
293 { | |
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294 return currentScene_->RenderScene(context, view, slice_); |
66 | 295 } |
296 else | |
297 { | |
298 return true; | |
299 } | |
300 } | |
301 | |
302 | |
303 void LayerWidget::ResetPendingScene() | |
304 { | |
121
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305 double thickness; |
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306 if (pendingScene_.get() == NULL) |
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307 { |
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308 thickness = 1.0; |
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309 } |
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310 else |
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311 { |
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312 thickness = pendingScene_->GetThickness(); |
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313 } |
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314 |
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315 pendingScene_.reset(new Scene(slice_, thickness, layers_.size())); |
66 | 316 } |
317 | |
318 | |
319 void LayerWidget::UpdateLayer(size_t index, | |
320 ILayerRenderer* renderer, | |
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321 const CoordinateSystem3D& slice) |
66 | 322 { |
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323 LOG(INFO) << "Updating layer " << index; |
66 | 324 |
325 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
326 | |
327 if (renderer == NULL) | |
328 { | |
329 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
330 } | |
331 | |
332 if (index >= layers_.size()) | |
333 { | |
334 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
335 } | |
336 | |
337 assert(layers_.size() == styles_.size()); | |
338 renderer->SetLayerStyle(styles_[index]); | |
339 | |
340 if (currentScene_.get() != NULL && | |
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341 currentScene_->ContainsPlane(slice)) |
66 | 342 { |
343 currentScene_->SetLayer(index, tmp.release()); | |
344 NotifyChange(); | |
345 } | |
346 else if (pendingScene_.get() != NULL && | |
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347 pendingScene_->ContainsPlane(slice)) |
66 | 348 { |
349 pendingScene_->SetLayer(index, tmp.release()); | |
350 | |
351 if (currentScene_.get() == NULL || | |
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352 !currentScene_->IsComplete() || |
66 | 353 pendingScene_->IsComplete()) |
354 { | |
355 currentScene_ = pendingScene_; | |
356 NotifyChange(); | |
357 } | |
358 } | |
359 } | |
360 | |
361 | |
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362 LayerWidget::LayerWidget(MessageBroker& broker) : |
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363 IObserver(broker), |
78 | 364 started_(false) |
66 | 365 { |
366 SetBackgroundCleared(true); | |
367 } | |
368 | |
369 | |
370 LayerWidget::~LayerWidget() | |
371 { | |
372 for (size_t i = 0; i < layers_.size(); i++) | |
373 { | |
374 delete layers_[i]; | |
375 } | |
376 } | |
377 | |
378 | |
379 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
380 { | |
381 if (layer == NULL) | |
382 { | |
383 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
384 } | |
385 | |
386 size_t index = layers_.size(); | |
387 layers_.push_back(layer); | |
388 styles_.push_back(RenderStyle()); | |
389 layersIndex_[layer] = index; | |
390 | |
391 ResetPendingScene(); | |
251
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392 layer->RegisterObserver(*this); |
66 | 393 |
103 | 394 ResetChangedLayers(); |
395 | |
66 | 396 return index; |
397 } | |
398 | |
219 | 399 void LayerWidget::ReplaceLayer(size_t index, ILayerSource* layer) // Takes ownership |
400 { | |
401 if (layer == NULL) | |
402 { | |
403 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
404 } | |
405 | |
406 if (index >= layers_.size()) | |
407 { | |
408 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
409 } | |
410 | |
411 delete layers_[index]; | |
412 layers_[index] = layer; | |
413 layersIndex_[layer] = index; | |
414 | |
415 ResetPendingScene(); | |
251
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416 layer->RegisterObserver(*this); |
219 | 417 |
418 InvalidateLayer(index); | |
419 } | |
420 | |
421 | |
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422 const RenderStyle& LayerWidget::GetLayerStyle(size_t layer) const |
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423 { |
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424 if (layer >= layers_.size()) |
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425 { |
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426 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
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427 } |
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428 |
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429 assert(layers_.size() == styles_.size()); |
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430 return styles_[layer]; |
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431 } |
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432 |
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433 |
66 | 434 void LayerWidget::SetLayerStyle(size_t layer, |
435 const RenderStyle& style) | |
436 { | |
437 if (layer >= layers_.size()) | |
438 { | |
439 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
440 } | |
441 | |
442 assert(layers_.size() == styles_.size()); | |
443 styles_[layer] = style; | |
444 | |
445 if (currentScene_.get() != NULL) | |
446 { | |
447 currentScene_->SetLayerStyle(layer, style); | |
448 } | |
449 | |
450 if (pendingScene_.get() != NULL) | |
451 { | |
452 pendingScene_->SetLayerStyle(layer, style); | |
453 } | |
454 | |
455 NotifyChange(); | |
456 } | |
457 | |
458 | |
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459 void LayerWidget::SetSlice(const CoordinateSystem3D& slice) |
66 | 460 { |
93
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461 LOG(INFO) << "Setting slice origin: (" << slice.GetOrigin()[0] |
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462 << "," << slice.GetOrigin()[1] |
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463 << "," << slice.GetOrigin()[2] << ")"; |
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464 |
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465 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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466 |
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467 //if (!displayedSlice.ContainsPlane(slice)) |
66 | 468 { |
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469 if (currentScene_.get() == NULL || |
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470 (pendingScene_.get() != NULL && |
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471 pendingScene_->IsComplete())) |
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472 { |
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473 currentScene_ = pendingScene_; |
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474 } |
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475 |
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476 slice_ = slice; |
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477 ResetPendingScene(); |
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478 |
92 | 479 InvalidateAllLayers(); // TODO Removing this line avoid loading twice the image in WASM |
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480 } |
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481 } |
66 | 482 |
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483 void LayerWidget::HandleMessage(IObservable& from, const IMessage& message) |
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484 { |
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485 switch (message.GetType()) { |
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486 case MessageType_GeometryReady: |
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487 OnGeometryReady(dynamic_cast<ILayerSource&>(from)); |
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488 break; |
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489 case MessageType_GeometryError: |
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490 LOG(ERROR) << "Cannot get geometry"; |
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491 break; |
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492 case MessageType_ContentChanged: |
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493 OnContentChanged(dynamic_cast<ILayerSource&>(from)); |
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494 break; |
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495 case MessageType_SliceChanged: |
252 | 496 OnSliceChanged(dynamic_cast<ILayerSource&>(from), dynamic_cast<const ILayerSource::SliceChangedMessage&>(message).slice_); |
251
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497 break; |
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498 case MessageType_LayerReady: |
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499 { |
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500 const ILayerSource::LayerReadyMessage& layerReadyMessage = dynamic_cast<const ILayerSource::LayerReadyMessage&>(message); |
252 | 501 OnLayerReady(layerReadyMessage.layer_, |
251
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502 dynamic_cast<ILayerSource&>(from), |
252 | 503 layerReadyMessage.slice_, |
504 layerReadyMessage.isError_); | |
251
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505 }; break; |
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506 default: |
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507 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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508 } |
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509 } |
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510 |
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511 void LayerWidget::OnGeometryReady(const ILayerSource& source) |
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512 { |
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513 size_t i; |
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514 if (LookupLayer(i, source)) |
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515 { |
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516 LOG(INFO) << "Geometry ready for layer " << i; |
103 | 517 |
518 changedLayers_[i] = true; | |
519 //layers_[i]->ScheduleLayerCreation(slice_); | |
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520 } |
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521 } |
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522 |
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523 void LayerWidget::InvalidateAllLayers() |
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524 { |
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525 for (size_t i = 0; i < layers_.size(); i++) |
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526 { |
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527 assert(layers_[i] != NULL); |
103 | 528 changedLayers_[i] = true; |
529 | |
530 //layers_[i]->ScheduleLayerCreation(slice_); | |
66 | 531 } |
532 } | |
533 | |
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534 |
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535 void LayerWidget::InvalidateLayer(size_t layer) |
66 | 536 { |
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537 if (layer >= layers_.size()) |
83 | 538 { |
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539 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
83 | 540 } |
66 | 541 |
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542 assert(layers_[layer] != NULL); |
103 | 543 changedLayers_[layer] = true; |
544 | |
545 //layers_[layer]->ScheduleLayerCreation(slice_); | |
77 | 546 } |
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547 |
77 | 548 |
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549 void LayerWidget::OnContentChanged(const ILayerSource& source) |
66 | 550 { |
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551 size_t index; |
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552 if (LookupLayer(index, source)) |
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553 { |
103 | 554 InvalidateLayer(index); |
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555 } |
66 | 556 } |
557 | |
558 | |
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559 void LayerWidget::OnSliceChanged(const ILayerSource& source, |
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560 const Slice& slice) |
66 | 561 { |
77 | 562 if (slice.ContainsPlane(slice_)) |
66 | 563 { |
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564 size_t index; |
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565 if (LookupLayer(index, source)) |
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566 { |
103 | 567 InvalidateLayer(index); |
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568 } |
66 | 569 } |
570 } | |
571 | |
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572 |
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573 void LayerWidget::OnLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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574 const ILayerSource& source, |
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575 const CoordinateSystem3D& slice, |
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576 bool isError) |
66 | 577 { |
578 size_t index; | |
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579 if (LookupLayer(index, source)) |
66 | 580 { |
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581 if (isError) |
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582 { |
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583 LOG(ERROR) << "Using error renderer on layer " << index; |
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584 } |
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585 else |
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586 { |
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587 LOG(INFO) << "Renderer ready for layer " << index; |
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588 } |
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589 |
99 | 590 if (renderer.get() != NULL) |
591 { | |
592 UpdateLayer(index, renderer.release(), slice); | |
593 } | |
594 else if (isError) | |
595 { | |
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596 // TODO |
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597 //UpdateLayer(index, new SliceOutlineRenderer(slice), slice); |
99 | 598 } |
66 | 599 } |
600 } | |
103 | 601 |
602 | |
603 void LayerWidget::ResetChangedLayers() | |
604 { | |
605 changedLayers_.resize(layers_.size()); | |
606 | |
607 for (size_t i = 0; i < changedLayers_.size(); i++) | |
608 { | |
609 changedLayers_[i] = false; | |
610 } | |
611 } | |
612 | |
613 | |
614 void LayerWidget::UpdateContent() | |
615 { | |
616 assert(changedLayers_.size() <= layers_.size()); | |
617 | |
618 for (size_t i = 0; i < changedLayers_.size(); i++) | |
619 { | |
620 if (changedLayers_[i]) | |
621 { | |
622 layers_[i]->ScheduleLayerCreation(slice_); | |
623 } | |
624 } | |
625 | |
626 ResetChangedLayers(); | |
627 } | |
66 | 628 } |