Mercurial > hg > orthanc-stone
annotate Framework/Radiography/RadiographyWidget.cpp @ 432:4eb96c6b4e96 am-vsol-upgrade
improved handling of MONOCHROME1, background and invertion
| author | am@osimis.io |
|---|---|
| date | Mon, 03 Dec 2018 13:53:29 +0100 |
| parents | 751fb354149e |
| children | a750f11892ec |
| rev | line source |
|---|---|
| 413 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2018 Osimis S.A., 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 "RadiographyWidget.h" | |
| 23 | |
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24 #include <Core/OrthancException.h> |
| 413 | 25 #include <Core/Images/Image.h> |
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26 #include <Core/Images/ImageProcessing.h> |
| 413 | 27 |
| 28 | |
| 29 namespace OrthancStone | |
| 30 { | |
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31 |
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32 bool RadiographyWidget::IsInvertedInternal() const |
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33 { |
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34 return (scene_->GetPreferredPhotomotricDisplayMode() == PhotometricDisplayMode_Monochrome1) ^ invert_; // MONOCHROME1 images must be inverted and the user can invert the image too -> XOR the two |
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35 } |
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36 |
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37 void RadiographyWidget::RenderBackground(Orthanc::ImageAccessor& image, float minValue, float maxValue) |
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38 { |
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39 // wipe background before rendering |
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40 float backgroundValue = minValue; |
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41 |
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42 switch (scene_->GetPreferredPhotomotricDisplayMode()) |
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43 { |
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44 case PhotometricDisplayMode_Monochrome1: |
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45 case PhotometricDisplayMode_Default: |
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46 if (IsInvertedInternal()) |
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47 backgroundValue = maxValue; |
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48 else |
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49 backgroundValue = minValue; |
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50 break; |
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51 case PhotometricDisplayMode_Monochrome2: |
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52 if (IsInvertedInternal()) |
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53 backgroundValue = minValue; |
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54 else |
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55 backgroundValue = maxValue; |
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56 break; |
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57 default: |
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58 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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59 } |
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60 |
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61 Orthanc::ImageProcessing::Set(image, backgroundValue); |
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62 } |
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63 |
| 413 | 64 bool RadiographyWidget::RenderInternal(unsigned int width, |
| 65 unsigned int height, | |
| 66 ImageInterpolation interpolation) | |
| 67 { | |
| 68 float windowCenter, windowWidth; | |
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69 scene_->GetWindowingWithDefault(windowCenter, windowWidth); |
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70 |
| 413 | 71 float x0 = windowCenter - windowWidth / 2.0f; |
| 72 float x1 = windowCenter + windowWidth / 2.0f; | |
| 73 | |
| 74 if (windowWidth <= 0.001f) // Avoid division by zero at (*) | |
| 75 { | |
| 76 return false; | |
| 77 } | |
| 78 else | |
| 79 { | |
| 80 if (floatBuffer_.get() == NULL || | |
| 81 floatBuffer_->GetWidth() != width || | |
| 82 floatBuffer_->GetHeight() != height) | |
| 83 { | |
| 84 floatBuffer_.reset(new Orthanc::Image(Orthanc::PixelFormat_Float32, width, height, false)); | |
| 85 } | |
| 86 | |
| 87 if (cairoBuffer_.get() == NULL || | |
| 88 cairoBuffer_->GetWidth() != width || | |
| 89 cairoBuffer_->GetHeight() != height) | |
| 90 { | |
| 91 cairoBuffer_.reset(new CairoSurface(width, height)); | |
| 92 } | |
| 93 | |
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94 RenderBackground(*floatBuffer_, x0, x1); |
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95 |
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96 scene_->Render(*floatBuffer_, GetView().GetMatrix(), interpolation); |
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97 |
| 413 | 98 // Conversion from Float32 to BGRA32 (cairo). Very similar to |
| 99 // GrayscaleFrameRenderer => TODO MERGE? | |
| 100 | |
| 101 Orthanc::ImageAccessor target; | |
| 102 cairoBuffer_->GetWriteableAccessor(target); | |
| 103 | |
| 104 float scaling = 255.0f / (x1 - x0); | |
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105 |
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106 bool invert = IsInvertedInternal(); |
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107 |
| 413 | 108 for (unsigned int y = 0; y < height; y++) |
| 109 { | |
| 110 const float* p = reinterpret_cast<const float*>(floatBuffer_->GetConstRow(y)); | |
| 111 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); | |
| 112 | |
| 113 for (unsigned int x = 0; x < width; x++, p++, q += 4) | |
| 114 { | |
| 115 uint8_t v = 0; | |
| 116 if (*p >= x1) | |
| 117 { | |
| 118 v = 255; | |
| 119 } | |
| 120 else if (*p <= x0) | |
| 121 { | |
| 122 v = 0; | |
| 123 } | |
| 124 else | |
| 125 { | |
| 126 // https://en.wikipedia.org/wiki/Linear_interpolation | |
| 127 v = static_cast<uint8_t>(scaling * (*p - x0)); // (*) | |
| 128 } | |
| 129 | |
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130 if (invert) |
| 413 | 131 { |
| 132 v = 255 - v; | |
| 133 } | |
| 134 | |
| 135 q[0] = v; | |
| 136 q[1] = v; | |
| 137 q[2] = v; | |
| 138 q[3] = 255; | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 return true; | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 | |
| 147 bool RadiographyWidget::RenderScene(CairoContext& context, | |
| 148 const ViewportGeometry& view) | |
| 149 { | |
| 150 cairo_t* cr = context.GetObject(); | |
| 151 | |
| 152 if (RenderInternal(context.GetWidth(), context.GetHeight(), interpolation_)) | |
| 153 { | |
| 154 // https://www.cairographics.org/FAQ/#paint_from_a_surface | |
| 155 cairo_save(cr); | |
| 156 cairo_identity_matrix(cr); | |
| 157 cairo_set_source_surface(cr, cairoBuffer_->GetObject(), 0, 0); | |
| 158 cairo_paint(cr); | |
| 159 cairo_restore(cr); | |
| 160 } | |
| 161 else | |
| 162 { | |
| 163 // https://www.cairographics.org/FAQ/#clear_a_surface | |
| 164 context.SetSourceColor(0, 0, 0); | |
| 165 cairo_paint(cr); | |
| 166 } | |
| 167 | |
| 168 if (hasSelection_) | |
| 169 { | |
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170 scene_->DrawBorder(context, selectedLayer_, view.GetZoom()); |
| 413 | 171 } |
| 172 | |
| 173 return true; | |
| 174 } | |
| 175 | |
| 176 | |
| 177 RadiographyWidget::RadiographyWidget(MessageBroker& broker, | |
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178 boost::shared_ptr<RadiographyScene> scene, |
| 413 | 179 const std::string& name) : |
| 180 WorldSceneWidget(name), | |
| 181 IObserver(broker), | |
| 182 invert_(false), | |
| 183 interpolation_(ImageInterpolation_Nearest), | |
| 184 hasSelection_(false), | |
| 185 selectedLayer_(0) // Dummy initialization | |
| 186 { | |
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187 SetScene(scene); |
| 413 | 188 } |
| 189 | |
| 190 | |
| 191 void RadiographyWidget::Select(size_t layer) | |
| 192 { | |
| 193 hasSelection_ = true; | |
| 194 selectedLayer_ = layer; | |
| 195 } | |
| 196 | |
| 197 | |
| 198 bool RadiographyWidget::LookupSelectedLayer(size_t& layer) | |
| 199 { | |
| 200 if (hasSelection_) | |
| 201 { | |
| 202 layer = selectedLayer_; | |
| 203 return true; | |
| 204 } | |
| 205 else | |
| 206 { | |
| 207 return false; | |
| 208 } | |
| 209 } | |
| 210 | |
| 211 | |
| 212 void RadiographyWidget::OnGeometryChanged(const RadiographyScene::GeometryChangedMessage& message) | |
| 213 { | |
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214 LOG(INFO) << "Scene geometry has changed"; |
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215 |
| 413 | 216 FitContent(); |
| 217 } | |
| 218 | |
| 219 | |
| 220 void RadiographyWidget::OnContentChanged(const RadiographyScene::ContentChangedMessage& message) | |
| 221 { | |
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222 LOG(INFO) << "Scene content has changed"; |
| 413 | 223 NotifyContentChanged(); |
| 224 } | |
| 225 | |
| 226 | |
| 227 void RadiographyWidget::SetInvert(bool invert) | |
| 228 { | |
| 229 if (invert_ != invert) | |
| 230 { | |
| 231 invert_ = invert; | |
| 232 NotifyContentChanged(); | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 | |
| 237 void RadiographyWidget::SwitchInvert() | |
| 238 { | |
| 239 invert_ = !invert_; | |
| 240 NotifyContentChanged(); | |
| 241 } | |
| 242 | |
| 243 | |
| 244 void RadiographyWidget::SetInterpolation(ImageInterpolation interpolation) | |
| 245 { | |
| 246 if (interpolation_ != interpolation) | |
| 247 { | |
| 248 interpolation_ = interpolation; | |
| 249 NotifyContentChanged(); | |
| 250 } | |
| 251 } | |
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252 |
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253 void RadiographyWidget::SetScene(boost::shared_ptr<RadiographyScene> scene) |
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254 { |
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255 if (scene_ != NULL) |
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256 { |
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257 scene_->Unregister(this); |
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258 } |
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259 |
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260 scene_ = scene; |
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261 |
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262 scene_->RegisterObserverCallback( |
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263 new Callable<RadiographyWidget, RadiographyScene::GeometryChangedMessage> |
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264 (*this, &RadiographyWidget::OnGeometryChanged)); |
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265 |
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266 scene_->RegisterObserverCallback( |
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267 new Callable<RadiographyWidget, RadiographyScene::ContentChangedMessage> |
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268 (*this, &RadiographyWidget::OnContentChanged)); |
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269 |
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270 NotifyContentChanged(); |
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271 |
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272 // force redraw |
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273 FitContent(); |
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274 } |
| 413 | 275 } |