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annotate Framework/Scene2D/Internals/OpenGLBasicPolylineRenderer.cpp @ 593:6bf8f881fcb5

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OpenGLBasicPolylineRenderer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 13:04:56 +0200
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children 1e26bb5f2a02
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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) 2017-2019 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
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38 void OpenGLBasicPolylineRenderer::Render(const AffineTransform2D& transform)
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39 {
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40 AffineTransform2D t = AffineTransform2D::Combine(
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41 AffineTransform2D::CreateOpenGLClipspace(context_.GetCanvasWidth(), context_.GetCanvasHeight()),
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42 transform);
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43
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44 glUseProgram(0);
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45 glColor3ub(layer_.GetRed(), layer_.GetGreen(), layer_.GetBlue());
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46
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47 glBegin(GL_LINES);
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48
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49 for (size_t i = 0; i < layer_.GetChainsCount(); i++)
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50 {
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51 const PolylineSceneLayer::Chain& chain = layer_.GetChain(i);
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52
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53 if (chain.size() > 1)
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54 {
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55 ScenePoint2D previous = chain[0].Apply(t);
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56
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57 for (size_t j = 1; j < chain.size(); j++)
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58 {
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59 ScenePoint2D p = chain[j].Apply(t);
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60
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61 glVertex2f(previous.GetX(), previous.GetY());
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62 glVertex2f(p.GetX(), p.GetY());
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63
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64 previous = p;
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65 }
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66
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67 if (layer_.IsClosedChain(i))
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68 {
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69 ScenePoint2D p = chain[0].Apply(t);
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70
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71 glVertex2f(previous.GetX(), previous.GetY());
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72 glVertex2f(p.GetX(), p.GetY());
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73 }
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74 }
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75 }
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76
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77 glEnd();
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78 }
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79
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80
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81 void OpenGLBasicPolylineRenderer::Update(const ISceneLayer& layer)
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82 {
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83 layer_.Copy(dynamic_cast<const PolylineSceneLayer&>(layer));
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84 }
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85 }
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86 }