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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 "OpenGLTextCoordinates.h"
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23
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24 #include <Core/OrthancException.h>
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25
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26 namespace OrthancStone
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27 {
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28 namespace OpenGL
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29 {
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30 void OpenGLTextCoordinates::Visit(uint32_t unicode,
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31 int x,
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32 int y,
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33 unsigned int width,
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34 unsigned int height,
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35 const Orthanc::IDynamicObject* payload)
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36 {
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37 // Rendering coordinates
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38 float rx1 = x - box_.GetLeft();
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39 float ry1 = y - box_.GetTop();
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40 float rx2 = rx1 + static_cast<float>(width);
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41 float ry2 = ry1 + static_cast<float>(height);
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42
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43 // Texture coordinates
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44 assert(payload != NULL);
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45 const GlyphTextureAlphabet::TextureLocation& location =
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46 *dynamic_cast<const GlyphTextureAlphabet::TextureLocation*>(payload);
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47
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48 float tx1 = location.GetX() / textureWidth_;
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49 float ty1 = location.GetY() / textureHeight_;
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50 float tx2 = tx1 + (static_cast<float>(width) / textureWidth_);
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51 float ty2 = ty1 + (static_cast<float>(height) / textureHeight_);
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52
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53 const float rpos[6][2] = {
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54 { rx1, ry1 },
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55 { rx1, ry2 },
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56 { rx2, ry1 },
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57 { rx2, ry1 },
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58 { rx1, ry2 },
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59 { rx2, ry2 }
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60 };
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61
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62 const float tpos[6][2] = {
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63 { tx1, ty1 },
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64 { tx1, ty2 },
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65 { tx2, ty1 },
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66 { tx2, ty1 },
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67 { tx1, ty2 },
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68 { tx2, ty2 }
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69 };
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70
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71 for (unsigned int i = 0; i < 6; i++)
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72 {
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73 renderingCoords_.push_back(rpos[i][0]);
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74 renderingCoords_.push_back(rpos[i][1]);
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75 textureCoords_.push_back(tpos[i][0]);
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76 textureCoords_.push_back(tpos[i][1]);
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77 }
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78 }
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79
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80
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81 OpenGLTextCoordinates::OpenGLTextCoordinates(const GlyphTextureAlphabet& alphabet,
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82 const std::string& utf8) :
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83 box_(alphabet.GetAlphabet(), utf8),
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84 textureWidth_(alphabet.GetTextureWidth()),
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85 textureHeight_(alphabet.GetTextureHeight())
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86 {
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87 if (textureWidth_ <= 0 ||
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88 textureHeight_ <= 0)
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89 {
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90 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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91 }
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92
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93 width_ = static_cast<float>(box_.GetWidth());
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94 height_ = static_cast<float>(box_.GetHeight());
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95
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96 // Each character is made of two 2D triangles (= 2 * 3 * 2 = 12)
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97 renderingCoords_.reserve(box_.GetCharactersCount() * 12);
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98 textureCoords_.reserve(box_.GetCharactersCount() * 12);
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99
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100 alphabet.GetAlphabet().Apply(*this, utf8);
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101 }
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102
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103
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104 const std::vector<float>& OpenGLTextCoordinates::GetRenderingCoords() const
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105 {
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106 assert(renderingCoords_.size() == textureCoords_.size());
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107 return renderingCoords_;
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108 }
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109
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110
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111 const std::vector<float>& OpenGLTextCoordinates::GetTextureCoords() const
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112 {
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113 assert(renderingCoords_.size() == textureCoords_.size());
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114 return textureCoords_;
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115 }
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116 }
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117 }
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