Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 121:e66b2c757790 wasm
displaying rt-struct
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 04 Oct 2017 17:53:47 +0200 |
| parents | ba83e38cf3ff |
| children | e2fe9352f240 |
| rev | line source |
|---|---|
| 66 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017 Osimis, Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "LayerWidget.h" | |
| 23 | |
| 99 | 24 #include "../Layers/SliceOutlineRenderer.h" |
| 85 | 25 |
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26 #include <Core/Logging.h> |
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27 |
| 85 | 28 static const double THIN_SLICE_THICKNESS = 100.0 * std::numeric_limits<double>::epsilon(); |
| 66 | 29 |
| 30 namespace OrthancStone | |
| 31 { | |
| 32 class LayerWidget::Scene : public boost::noncopyable | |
| 33 { | |
| 34 private: | |
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35 CoordinateSystem3D slice_; |
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36 double thickness_; |
| 66 | 37 size_t countMissing_; |
| 38 std::vector<ILayerRenderer*> renderers_; | |
| 39 | |
| 40 void DeleteLayer(size_t index) | |
| 41 { | |
| 42 if (index >= renderers_.size()) | |
| 43 { | |
| 44 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 45 } | |
| 46 | |
| 47 assert(countMissing_ <= renderers_.size()); | |
| 48 | |
| 49 if (renderers_[index] != NULL) | |
| 50 { | |
| 51 assert(countMissing_ < renderers_.size()); | |
| 52 delete renderers_[index]; | |
| 53 renderers_[index] = NULL; | |
| 54 countMissing_++; | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 public: | |
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59 Scene(const CoordinateSystem3D& slice, |
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60 double thickness, |
| 66 | 61 size_t countLayers) : |
| 62 slice_(slice), | |
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63 thickness_(thickness), |
| 66 | 64 countMissing_(countLayers), |
| 65 renderers_(countLayers, NULL) | |
| 66 { | |
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67 if (thickness <= 0) |
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68 { |
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69 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
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70 } |
| 66 | 71 } |
| 72 | |
| 73 ~Scene() | |
| 74 { | |
| 75 for (size_t i = 0; i < renderers_.size(); i++) | |
| 76 { | |
| 77 DeleteLayer(i); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 void SetLayer(size_t index, | |
| 82 ILayerRenderer* renderer) // Takes ownership | |
| 83 { | |
| 84 if (renderer == NULL) | |
| 85 { | |
| 86 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 87 } | |
| 88 | |
| 89 DeleteLayer(index); | |
| 90 | |
| 91 renderers_[index] = renderer; | |
| 92 countMissing_--; | |
| 93 } | |
| 94 | |
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95 const CoordinateSystem3D& GetSlice() const |
| 66 | 96 { |
| 97 return slice_; | |
| 98 } | |
| 99 | |
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100 bool HasRenderer(size_t index) |
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101 { |
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102 return renderers_[index] != NULL; |
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103 } |
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104 |
| 66 | 105 bool IsComplete() const |
| 106 { | |
| 107 return countMissing_ == 0; | |
| 108 } | |
| 109 | |
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110 unsigned int GetCountMissing() const |
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111 { |
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112 return countMissing_; |
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113 } |
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114 |
| 66 | 115 bool RenderScene(CairoContext& context, |
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116 const ViewportGeometry& view, |
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117 const CoordinateSystem3D& viewportSlice) |
| 66 | 118 { |
| 119 bool fullQuality = true; | |
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120 cairo_t *cr = context.GetObject(); |
| 66 | 121 |
| 122 for (size_t i = 0; i < renderers_.size(); i++) | |
| 123 { | |
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124 if (renderers_[i] != NULL) |
| 66 | 125 { |
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126 const CoordinateSystem3D& frameSlice = renderers_[i]->GetLayerSlice(); |
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127 |
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128 double x0, y0, x1, y1, x2, y2; |
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129 viewportSlice.ProjectPoint(x0, y0, frameSlice.GetOrigin()); |
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130 viewportSlice.ProjectPoint(x1, y1, frameSlice.GetOrigin() + frameSlice.GetAxisX()); |
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131 viewportSlice.ProjectPoint(x2, y2, frameSlice.GetOrigin() + frameSlice.GetAxisY()); |
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132 |
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133 /** |
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134 * Now we solve the system of linear equations Ax + b = x', given: |
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135 * A [0 ; 0] + b = [x0 ; y0] |
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136 * A [1 ; 0] + b = [x1 ; y1] |
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137 * A [0 ; 1] + b = [x2 ; y2] |
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138 * <=> |
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139 * b = [x0 ; y0] |
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140 * A [1 ; 0] = [x1 ; y1] - b = [x1 - x0 ; y1 - y0] |
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141 * A [0 ; 1] = [x2 ; y2] - b = [x2 - x0 ; y2 - y0] |
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142 * <=> |
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143 * b = [x0 ; y0] |
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144 * [a11 ; a21] = [x1 - x0 ; y1 - y0] |
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145 * [a12 ; a22] = [x2 - x0 ; y2 - y0] |
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146 **/ |
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147 |
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148 cairo_matrix_t transform; |
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149 cairo_matrix_init(&transform, x1 - x0, y1 - y0, x2 - x0, y2 - y0, x0, y0); |
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150 |
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151 cairo_save(cr); |
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152 cairo_transform(cr, &transform); |
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153 |
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154 if (!renderers_[i]->RenderLayer(context, view)) |
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155 { |
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156 cairo_restore(cr); |
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157 return false; |
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158 } |
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159 |
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160 cairo_restore(cr); |
| 66 | 161 } |
| 162 | |
| 163 if (renderers_[i] != NULL && | |
| 164 !renderers_[i]->IsFullQuality()) | |
| 165 { | |
| 166 fullQuality = false; | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 if (!fullQuality) | |
| 171 { | |
| 172 double x, y; | |
| 173 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
| 174 | |
| 175 cairo_translate(cr, x, y); | |
| 95 | 176 |
| 177 #if 1 | |
| 178 double s = 5.0 / view.GetZoom(); | |
| 179 cairo_rectangle(cr, -s, -s, 2.0 * s, 2.0 * s); | |
| 180 #else | |
| 181 // TODO Drawing circles makes WebAssembly crash! | |
| 66 | 182 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); |
| 95 | 183 #endif |
| 184 | |
| 66 | 185 cairo_set_line_width(cr, 2.0 / view.GetZoom()); |
| 186 cairo_set_source_rgb(cr, 1, 1, 1); | |
| 187 cairo_stroke_preserve(cr); | |
| 95 | 188 cairo_set_source_rgb(cr, 1, 0, 0); |
| 66 | 189 cairo_fill(cr); |
| 190 } | |
| 191 | |
| 192 return true; | |
| 193 } | |
| 194 | |
| 195 void SetLayerStyle(size_t index, | |
| 196 const RenderStyle& style) | |
| 197 { | |
| 198 if (renderers_[index] != NULL) | |
| 199 { | |
| 200 renderers_[index]->SetLayerStyle(style); | |
| 201 } | |
| 202 } | |
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203 |
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204 bool ContainsPlane(const CoordinateSystem3D& slice) const |
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205 { |
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206 bool isOpposite; |
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207 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, |
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208 slice.GetNormal(), |
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209 slice_.GetNormal())) |
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210 { |
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211 return false; |
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212 } |
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213 else |
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214 { |
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215 double z = (slice_.ProjectAlongNormal(slice.GetOrigin()) - |
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216 slice_.ProjectAlongNormal(slice_.GetOrigin())); |
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217 |
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218 if (z < 0) |
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219 { |
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220 z = -z; |
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221 } |
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222 |
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223 return z <= thickness_; |
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224 } |
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225 } |
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226 |
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227 double GetThickness() const |
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228 { |
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229 return thickness_; |
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230 } |
| 66 | 231 }; |
| 232 | |
| 233 | |
| 234 bool LayerWidget::LookupLayer(size_t& index /* out */, | |
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235 const ILayerSource& layer) const |
| 66 | 236 { |
| 237 LayersIndex::const_iterator found = layersIndex_.find(&layer); | |
| 238 | |
| 239 if (found == layersIndex_.end()) | |
| 240 { | |
| 241 return false; | |
| 242 } | |
| 243 else | |
| 244 { | |
| 245 index = found->second; | |
| 246 assert(index < layers_.size() && | |
| 247 layers_[index] == &layer); | |
| 248 return true; | |
| 249 } | |
| 250 } | |
| 251 | |
| 85 | 252 |
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253 void LayerWidget::GetLayerExtent(Extent2D& extent, |
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254 ILayerSource& source) const |
| 85 | 255 { |
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256 extent.Reset(); |
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257 |
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258 std::vector<Vector> points; |
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259 if (source.GetExtent(points, slice_)) |
| 85 | 260 { |
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261 for (size_t i = 0; i < points.size(); i++) |
| 85 | 262 { |
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263 double x, y; |
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264 slice_.ProjectPoint(x, y, points[i]); |
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265 extent.AddPoint(x, y); |
| 85 | 266 } |
| 267 } | |
| 268 } | |
| 269 | |
| 66 | 270 |
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271 Extent2D LayerWidget::GetSceneExtent() |
| 66 | 272 { |
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273 Extent2D sceneExtent; |
| 66 | 274 |
| 275 for (size_t i = 0; i < layers_.size(); i++) | |
| 276 { | |
| 277 assert(layers_[i] != NULL); | |
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278 Extent2D layerExtent; |
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279 GetLayerExtent(layerExtent, *layers_[i]); |
| 66 | 280 |
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281 sceneExtent.Union(layerExtent); |
| 66 | 282 } |
| 283 | |
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284 return sceneExtent; |
| 66 | 285 } |
| 286 | |
| 287 | |
| 288 bool LayerWidget::RenderScene(CairoContext& context, | |
| 289 const ViewportGeometry& view) | |
| 290 { | |
| 291 if (currentScene_.get() != NULL) | |
| 292 { | |
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293 return currentScene_->RenderScene(context, view, slice_); |
| 66 | 294 } |
| 295 else | |
| 296 { | |
| 297 return true; | |
| 298 } | |
| 299 } | |
| 300 | |
| 301 | |
| 302 void LayerWidget::ResetPendingScene() | |
| 303 { | |
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304 double thickness; |
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305 if (pendingScene_.get() == NULL) |
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306 { |
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307 thickness = 1.0; |
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308 } |
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309 else |
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310 { |
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311 thickness = pendingScene_->GetThickness(); |
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312 } |
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313 |
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314 pendingScene_.reset(new Scene(slice_, thickness, layers_.size())); |
| 66 | 315 } |
| 316 | |
| 317 | |
| 318 void LayerWidget::UpdateLayer(size_t index, | |
| 319 ILayerRenderer* renderer, | |
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320 const CoordinateSystem3D& slice) |
| 66 | 321 { |
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322 LOG(INFO) << "Updating layer " << index; |
| 66 | 323 |
| 324 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
| 325 | |
| 326 if (renderer == NULL) | |
| 327 { | |
| 328 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 329 } | |
| 330 | |
| 331 if (index >= layers_.size()) | |
| 332 { | |
| 333 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 334 } | |
| 335 | |
| 336 assert(layers_.size() == styles_.size()); | |
| 337 renderer->SetLayerStyle(styles_[index]); | |
| 338 | |
| 339 if (currentScene_.get() != NULL && | |
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340 currentScene_->ContainsPlane(slice)) |
| 66 | 341 { |
| 342 currentScene_->SetLayer(index, tmp.release()); | |
| 343 NotifyChange(); | |
| 344 } | |
| 345 else if (pendingScene_.get() != NULL && | |
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346 pendingScene_->ContainsPlane(slice)) |
| 66 | 347 { |
| 348 pendingScene_->SetLayer(index, tmp.release()); | |
| 349 | |
| 350 if (currentScene_.get() == NULL || | |
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351 !currentScene_->IsComplete() || |
| 66 | 352 pendingScene_->IsComplete()) |
| 353 { | |
| 354 currentScene_ = pendingScene_; | |
| 355 NotifyChange(); | |
| 356 } | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 | |
| 361 LayerWidget::LayerWidget() : | |
| 78 | 362 started_(false) |
| 66 | 363 { |
| 364 SetBackgroundCleared(true); | |
| 365 } | |
| 366 | |
| 367 | |
| 368 LayerWidget::~LayerWidget() | |
| 369 { | |
| 370 for (size_t i = 0; i < layers_.size(); i++) | |
| 371 { | |
| 372 delete layers_[i]; | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 | |
| 377 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
| 378 { | |
| 379 if (layer == NULL) | |
| 380 { | |
| 381 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 382 } | |
| 383 | |
| 384 size_t index = layers_.size(); | |
| 385 layers_.push_back(layer); | |
| 386 styles_.push_back(RenderStyle()); | |
| 387 layersIndex_[layer] = index; | |
| 388 | |
| 389 ResetPendingScene(); | |
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390 layer->Register(*this); |
| 66 | 391 |
| 103 | 392 ResetChangedLayers(); |
| 393 | |
| 66 | 394 return index; |
| 395 } | |
| 396 | |
| 397 | |
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398 const RenderStyle& LayerWidget::GetLayerStyle(size_t layer) const |
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399 { |
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400 if (layer >= layers_.size()) |
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401 { |
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402 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
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403 } |
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404 |
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405 assert(layers_.size() == styles_.size()); |
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406 return styles_[layer]; |
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407 } |
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408 |
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409 |
| 66 | 410 void LayerWidget::SetLayerStyle(size_t layer, |
| 411 const RenderStyle& style) | |
| 412 { | |
| 413 if (layer >= layers_.size()) | |
| 414 { | |
| 415 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 416 } | |
| 417 | |
| 418 assert(layers_.size() == styles_.size()); | |
| 419 styles_[layer] = style; | |
| 420 | |
| 421 if (currentScene_.get() != NULL) | |
| 422 { | |
| 423 currentScene_->SetLayerStyle(layer, style); | |
| 424 } | |
| 425 | |
| 426 if (pendingScene_.get() != NULL) | |
| 427 { | |
| 428 pendingScene_->SetLayerStyle(layer, style); | |
| 429 } | |
| 430 | |
| 431 NotifyChange(); | |
| 432 } | |
| 433 | |
| 434 | |
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435 void LayerWidget::SetSlice(const CoordinateSystem3D& slice) |
| 66 | 436 { |
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437 LOG(INFO) << "Setting slice origin: (" << slice.GetOrigin()[0] |
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438 << "," << slice.GetOrigin()[1] |
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439 << "," << slice.GetOrigin()[2] << ")"; |
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440 |
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441 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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442 |
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443 //if (!displayedSlice.ContainsPlane(slice)) |
| 66 | 444 { |
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445 if (currentScene_.get() == NULL || |
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446 (pendingScene_.get() != NULL && |
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447 pendingScene_->IsComplete())) |
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448 { |
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449 currentScene_ = pendingScene_; |
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450 } |
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451 |
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452 slice_ = slice; |
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453 ResetPendingScene(); |
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454 |
| 92 | 455 InvalidateAllLayers(); // TODO Removing this line avoid loading twice the image in WASM |
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456 } |
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457 } |
| 66 | 458 |
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459 |
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460 void LayerWidget::NotifyGeometryReady(const ILayerSource& source) |
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461 { |
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462 size_t i; |
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463 if (LookupLayer(i, source)) |
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464 { |
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465 LOG(INFO) << "Geometry ready for layer " << i; |
| 103 | 466 |
| 467 changedLayers_[i] = true; | |
| 468 //layers_[i]->ScheduleLayerCreation(slice_); | |
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469 } |
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470 } |
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471 |
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472 |
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473 void LayerWidget::NotifyGeometryError(const ILayerSource& source) |
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474 { |
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475 LOG(ERROR) << "Cannot get geometry"; |
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476 } |
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477 |
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478 |
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479 void LayerWidget::InvalidateAllLayers() |
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480 { |
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481 for (size_t i = 0; i < layers_.size(); i++) |
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482 { |
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483 assert(layers_[i] != NULL); |
| 103 | 484 changedLayers_[i] = true; |
| 485 | |
| 486 //layers_[i]->ScheduleLayerCreation(slice_); | |
| 66 | 487 } |
| 488 } | |
| 489 | |
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490 |
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491 void LayerWidget::InvalidateLayer(size_t layer) |
| 66 | 492 { |
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493 if (layer >= layers_.size()) |
| 83 | 494 { |
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495 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
| 83 | 496 } |
| 66 | 497 |
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498 assert(layers_[layer] != NULL); |
| 103 | 499 changedLayers_[layer] = true; |
| 500 | |
| 501 //layers_[layer]->ScheduleLayerCreation(slice_); | |
| 77 | 502 } |
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503 |
| 77 | 504 |
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505 void LayerWidget::NotifyContentChange(const ILayerSource& source) |
| 66 | 506 { |
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507 size_t index; |
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508 if (LookupLayer(index, source)) |
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509 { |
| 103 | 510 InvalidateLayer(index); |
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511 } |
| 66 | 512 } |
| 513 | |
| 514 | |
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515 void LayerWidget::NotifySliceChange(const ILayerSource& source, |
| 77 | 516 const Slice& slice) |
| 66 | 517 { |
| 77 | 518 if (slice.ContainsPlane(slice_)) |
| 66 | 519 { |
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520 size_t index; |
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521 if (LookupLayer(index, source)) |
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522 { |
| 103 | 523 InvalidateLayer(index); |
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524 } |
| 66 | 525 } |
| 526 } | |
| 527 | |
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528 |
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529 void LayerWidget::NotifyLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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530 const ILayerSource& source, |
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531 const CoordinateSystem3D& slice, |
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532 bool isError) |
| 66 | 533 { |
| 534 size_t index; | |
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535 if (LookupLayer(index, source)) |
| 66 | 536 { |
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537 if (isError) |
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538 { |
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539 LOG(ERROR) << "Using error renderer on layer " << index; |
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540 } |
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541 else |
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542 { |
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543 LOG(INFO) << "Renderer ready for layer " << index; |
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544 } |
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545 |
| 99 | 546 if (renderer.get() != NULL) |
| 547 { | |
| 548 UpdateLayer(index, renderer.release(), slice); | |
| 549 } | |
| 550 else if (isError) | |
| 551 { | |
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552 // TODO |
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553 //UpdateLayer(index, new SliceOutlineRenderer(slice), slice); |
| 99 | 554 } |
| 66 | 555 } |
| 556 } | |
| 103 | 557 |
| 558 | |
| 559 void LayerWidget::ResetChangedLayers() | |
| 560 { | |
| 561 changedLayers_.resize(layers_.size()); | |
| 562 | |
| 563 for (size_t i = 0; i < changedLayers_.size(); i++) | |
| 564 { | |
| 565 changedLayers_[i] = false; | |
| 566 } | |
| 567 } | |
| 568 | |
| 569 | |
| 570 void LayerWidget::UpdateContent() | |
| 571 { | |
| 572 assert(changedLayers_.size() <= layers_.size()); | |
| 573 | |
| 574 for (size_t i = 0; i < changedLayers_.size(); i++) | |
| 575 { | |
| 576 if (changedLayers_[i]) | |
| 577 { | |
| 578 layers_[i]->ScheduleLayerCreation(slice_); | |
| 579 } | |
| 580 } | |
| 581 | |
| 582 ResetChangedLayers(); | |
| 583 } | |
| 66 | 584 } |