Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/Internals/OpenGLLookupTableTextureRenderer.cpp @ 2021:1458f3bcb991
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 03 Dec 2022 12:00:48 +0100 |
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1 /** |
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2 * Stone of Orthanc |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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7 * |
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8 * This program is free software: you can redistribute it and/or |
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9 * modify it under the terms of the GNU Lesser General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
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12 * |
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13 * This program is distributed in the hope that it will be useful, but |
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
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21 **/ |
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22 |
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23 |
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24 #include "OpenGLLookupTableTextureRenderer.h" |
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25 |
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26 #include "../../Toolbox/ImageToolbox.h" |
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27 |
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28 |
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29 #include <OrthancException.h> |
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30 |
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31 namespace OrthancStone |
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32 { |
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33 namespace Internals |
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34 { |
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35 void OpenGLLookupTableTextureRenderer::LoadTexture( |
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36 const LookupTableTextureSceneLayer& layer) |
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37 { |
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38 if (!context_.IsContextLost()) |
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40 const Orthanc::ImageAccessor& source = layer.GetTexture(); |
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41 const unsigned int width = source.GetWidth(); |
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42 const unsigned int height = source.GetHeight(); |
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43 |
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44 if (texture_.get() == NULL || |
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45 texture_->GetWidth() != width || |
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46 texture_->GetHeight() != height) |
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47 { |
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48 texture_.reset(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, width, height, false)); |
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49 } |
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50 |
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51 layer.Render(*texture_); |
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52 |
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53 context_.MakeCurrent(); |
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54 glTexture_.reset(new OpenGL::OpenGLTexture(context_)); |
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55 glTexture_->Load(*texture_, layer.IsLinearInterpolation()); |
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56 layerTransform_ = layer.GetTransform(); |
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57 } |
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58 } |
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59 |
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60 OpenGLLookupTableTextureRenderer::OpenGLLookupTableTextureRenderer( |
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61 OpenGL::IOpenGLContext& context, |
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62 OpenGLColorTextureProgram& program, |
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63 const LookupTableTextureSceneLayer& layer) |
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64 : context_(context) |
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65 , program_(program) |
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66 { |
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67 LoadTexture(layer); |
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68 } |
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69 |
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70 |
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71 void OpenGLLookupTableTextureRenderer::Render(const AffineTransform2D& transform, |
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72 unsigned int canvasWidth, |
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73 unsigned int canvasHeight) |
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74 { |
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75 if (!context_.IsContextLost() && glTexture_.get() != NULL) |
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77 program_.Apply( |
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78 *glTexture_, |
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79 AffineTransform2D::Combine(transform, layerTransform_), |
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80 canvasWidth, canvasHeight, true); |
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81 } |
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82 } |
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85 void OpenGLLookupTableTextureRenderer::Update(const ISceneLayer& layer) |
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86 { |
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87 // Should never happen (no revisions in color textures) |
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88 LoadTexture(dynamic_cast<const LookupTableTextureSceneLayer&>(layer)); |
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89 } |
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91 } |