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annotate Framework/Scene2D/Internals/OpenGLBasicPolylineRenderer.cpp @ 847:df6c52402484

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author Benjamin Golinvaux <bgo@osimis.io>
date Sat, 15 Jun 2019 20:37:48 +0200
parents 61ba4b504e9a
children 1091b2adeb5a
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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
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46 glBegin(GL_LINES);
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47
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48 for (size_t i = 0; i < layer_.GetChainsCount(); i++)
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49 {
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50 const Color& color = layer_.GetColor(i);
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51 glColor3ub(color.GetRed(), color.GetGreen(), color.GetBlue());
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52
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53 const PolylineSceneLayer::Chain& chain = layer_.GetChain(i);
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54
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55 if (chain.size() > 1)
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56 {
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57 ScenePoint2D previous = chain[0].Apply(t);
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58
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59 for (size_t j = 1; j < chain.size(); j++)
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60 {
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61 ScenePoint2D p = chain[j].Apply(t);
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62
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63 glVertex2f(static_cast<GLfloat>(previous.GetX()),
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64 static_cast<GLfloat>(previous.GetY()));
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65 glVertex2f(static_cast<GLfloat>(p.GetX()),
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66 static_cast<GLfloat>(p.GetY()));
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67
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68 previous = p;
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69 }
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70
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71 if (layer_.IsClosedChain(i))
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72 {
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73 ScenePoint2D p = chain[0].Apply(t);
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74
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75 glVertex2f(static_cast<GLfloat>(previous.GetX()),
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76 static_cast<GLfloat>(previous.GetY()));
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77 glVertex2f(static_cast<GLfloat>(p.GetX()),
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78 static_cast<GLfloat>(p.GetY()));
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79 }
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80 }
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81 }
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82
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83 glEnd();
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84 }
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86
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87 void OpenGLBasicPolylineRenderer::Update(const ISceneLayer& layer)
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88 {
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89 layer_.Copy(dynamic_cast<const PolylineSceneLayer&>(layer));
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90 }
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91 }
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92 }