Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/Internals/OpenGLBasicPolylineRenderer.cpp @ 1851:739a69562826
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 29 Jun 2021 14:25:58 +0200 |
parents | 9ac2a65d4172 |
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OpenGLBasicPolylineRenderer
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1 /** |
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OpenGLBasicPolylineRenderer
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2 * Stone of Orthanc |
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OpenGLBasicPolylineRenderer
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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 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
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11 * |
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12 * This program is distributed in the hope that it will be useful, but |
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 * Lesser General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 |
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23 #include "OpenGLBasicPolylineRenderer.h" |
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24 |
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25 #include "../../OpenGL/OpenGLIncludes.h" |
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26 |
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27 namespace OrthancStone |
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28 { |
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29 namespace Internals |
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30 { |
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31 OpenGLBasicPolylineRenderer::OpenGLBasicPolylineRenderer(OpenGL::IOpenGLContext& context, |
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32 const PolylineSceneLayer& layer) : |
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33 context_(context) |
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34 { |
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35 layer_.Copy(layer); |
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36 } |
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37 |
1571 | 38 void OpenGLBasicPolylineRenderer::Render(const AffineTransform2D& transform, |
39 unsigned int canvasWidth, | |
40 unsigned int canvasHeight) | |
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41 { |
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42 if (!context_.IsContextLost()) |
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43 { |
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44 AffineTransform2D t = AffineTransform2D::Combine( |
1571 | 45 AffineTransform2D::CreateOpenGLClipspace(canvasWidth, canvasHeight), |
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46 transform); |
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47 |
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48 glUseProgram(0); |
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49 |
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50 glBegin(GL_LINES); |
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51 |
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52 for (size_t i = 0; i < layer_.GetChainsCount(); i++) |
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53 { |
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54 const Color& color = layer_.GetColor(i); |
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55 glColor3ub(color.GetRed(), color.GetGreen(), color.GetBlue()); |
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56 |
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57 const PolylineSceneLayer::Chain& chain = layer_.GetChain(i); |
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58 |
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59 if (chain.size() > 1) |
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60 { |
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61 ScenePoint2D previous = chain[0].Apply(t); |
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62 |
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63 for (size_t j = 1; j < chain.size(); j++) |
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64 { |
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65 ScenePoint2D p = chain[j].Apply(t); |
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66 |
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67 glVertex2f(static_cast<GLfloat>(previous.GetX()), |
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68 static_cast<GLfloat>(previous.GetY())); |
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69 glVertex2f(static_cast<GLfloat>(p.GetX()), |
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70 static_cast<GLfloat>(p.GetY())); |
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71 |
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72 previous = p; |
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73 } |
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74 |
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75 if (layer_.IsClosedChain(i)) |
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76 { |
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77 ScenePoint2D p = chain[0].Apply(t); |
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78 |
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79 glVertex2f(static_cast<GLfloat>(previous.GetX()), |
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80 static_cast<GLfloat>(previous.GetY())); |
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81 glVertex2f(static_cast<GLfloat>(p.GetX()), |
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82 static_cast<GLfloat>(p.GetY())); |
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83 } |
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84 } |
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85 } |
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86 |
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87 glEnd(); |
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88 } |
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89 } |
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90 |
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91 |
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92 void OpenGLBasicPolylineRenderer::Update(const ISceneLayer& layer) |
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93 { |
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94 layer_.Copy(dynamic_cast<const PolylineSceneLayer&>(layer)); |
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95 } |
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96 } |
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97 } |