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annotate OrthancStone/Sources/Scene2D/Internals/OpenGLBasicPolylineRenderer.cpp @ 1571:85e117739eca

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 21 Sep 2020 17:46:39 +0200
parents 244ad1e4e76a
children 8563ea5d8ae4
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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) 2017-2020 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 Affero 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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "OpenGLBasicPolylineRenderer.h"
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23
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24 #include "../../OpenGL/OpenGLIncludes.h"
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25
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26 namespace OrthancStone
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27 {
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28 namespace Internals
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29 {
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30 OpenGLBasicPolylineRenderer::OpenGLBasicPolylineRenderer(OpenGL::IOpenGLContext& context,
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31 const PolylineSceneLayer& layer) :
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32 context_(context)
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33 {
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34 layer_.Copy(layer);
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35 }
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36
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37 void OpenGLBasicPolylineRenderer::Render(const AffineTransform2D& transform,
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38 unsigned int canvasWidth,
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39 unsigned int canvasHeight)
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40 {
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41 if (!context_.IsContextLost())
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42 {
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43 AffineTransform2D t = AffineTransform2D::Combine(
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44 AffineTransform2D::CreateOpenGLClipspace(canvasWidth, canvasHeight),
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45 transform);
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46
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47 glUseProgram(0);
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48
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49 glBegin(GL_LINES);
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50
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51 for (size_t i = 0; i < layer_.GetChainsCount(); i++)
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52 {
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53 const Color& color = layer_.GetColor(i);
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54 glColor3ub(color.GetRed(), color.GetGreen(), color.GetBlue());
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55
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56 const PolylineSceneLayer::Chain& chain = layer_.GetChain(i);
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57
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58 if (chain.size() > 1)
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59 {
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60 ScenePoint2D previous = chain[0].Apply(t);
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61
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62 for (size_t j = 1; j < chain.size(); j++)
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63 {
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64 ScenePoint2D p = chain[j].Apply(t);
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66 glVertex2f(static_cast<GLfloat>(previous.GetX()),
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67 static_cast<GLfloat>(previous.GetY()));
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68 glVertex2f(static_cast<GLfloat>(p.GetX()),
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69 static_cast<GLfloat>(p.GetY()));
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71 previous = p;
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72 }
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74 if (layer_.IsClosedChain(i))
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75 {
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76 ScenePoint2D p = chain[0].Apply(t);
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78 glVertex2f(static_cast<GLfloat>(previous.GetX()),
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79 static_cast<GLfloat>(previous.GetY()));
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80 glVertex2f(static_cast<GLfloat>(p.GetX()),
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81 static_cast<GLfloat>(p.GetY()));
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82 }
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83 }
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84 }
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85
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86 glEnd();
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87 }
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88 }
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89
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90
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91 void OpenGLBasicPolylineRenderer::Update(const ISceneLayer& layer)
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92 {
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93 layer_.Copy(dynamic_cast<const PolylineSceneLayer&>(layer));
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94 }
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95 }
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96 }