Mercurial > hg > orthanc-stone
annotate Applications/Sdl/SdlOpenGLWindow.cpp @ 595:6e471e6cf09b
CairoPolylineRenderer, SdlOpenGLWindow
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 26 Apr 2019 15:11:11 +0200 |
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children | 412a2d01a189 |
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595
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CairoPolylineRenderer, SdlOpenGLWindow
Sebastien Jodogne <s.jodogne@gmail.com>
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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 "SdlOpenGLWindow.h" |
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23 |
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24 #if ORTHANC_ENABLE_SDL == 1 |
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25 |
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26 #include <Core/OrthancException.h> |
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27 |
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28 namespace OrthancStone |
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29 { |
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30 SdlOpenGLWindow::SdlOpenGLWindow(const char* title, |
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31 unsigned int width, |
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32 unsigned int height) : |
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33 window_(title, width, height, true /* enable OpenGL */) |
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34 { |
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35 context_ = SDL_GL_CreateContext(window_.GetObject()); |
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36 |
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37 if (context_ == NULL) |
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38 { |
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39 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, |
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40 "Cannot initialize OpenGL"); |
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41 } |
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42 } |
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43 |
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44 |
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45 SdlOpenGLWindow::~SdlOpenGLWindow() |
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46 { |
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47 SDL_GL_DeleteContext(context_); |
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48 } |
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49 |
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50 |
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51 void SdlOpenGLWindow::MakeCurrent() |
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52 { |
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53 if (SDL_GL_MakeCurrent(window_.GetObject(), context_) != 0) |
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54 { |
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55 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError, |
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56 "Cannot set current OpenGL context"); |
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57 } |
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58 |
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59 // This makes our buffer swap syncronized with the monitor's vertical refresh |
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60 SDL_GL_SetSwapInterval(1); |
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61 } |
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62 |
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63 |
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64 void SdlOpenGLWindow::SwapBuffer() |
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65 { |
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66 // Swap our buffer to display the current contents of buffer on screen |
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67 SDL_GL_SwapWindow(window_.GetObject()); |
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68 } |
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69 |
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70 |
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71 unsigned int SdlOpenGLWindow::GetCanvasWidth() |
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72 { |
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73 int w = 0; |
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74 SDL_GL_GetDrawableSize(window_.GetObject(), &w, NULL); |
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75 return static_cast<unsigned int>(w); |
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76 } |
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77 |
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78 |
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79 unsigned int SdlOpenGLWindow::GetCanvasHeight() |
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80 { |
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81 int h = 0; |
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82 SDL_GL_GetDrawableSize(window_.GetObject(), NULL, &h); |
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83 return static_cast<unsigned int>(h); |
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84 } |
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85 } |
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86 |
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87 #endif |