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annotate OrthancStone/Sources/Scene2D/Internals/OpenGLLookupTableTextureRenderer.cpp @ 1870:3889ae96d2e9

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added copyright UCLouvain
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:04:09 +0100
parents 9ac2a65d4172
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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) 2017-2021 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2021 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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24 #include "OpenGLLookupTableTextureRenderer.h"
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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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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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39 {
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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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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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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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76 {
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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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90 }
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91 }