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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#include <stdafx.h></span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="preprocessor">#include <ModelLoading.h></span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include <glm/gtc/type_ptr.hpp></span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include <variant></span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include "Vertex.h"</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include "Mesh.h"</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include "IO.h"</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include <Model.h></span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="keyword">namespace </span>fpr</div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span>{</div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span>uint32_t ModelLoader::mesh_index = 0;</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span>ModelPrimitives ModelLoader::LoadModelAssimp(<span class="keyword">const</span> <span class="keywordtype">char</span>* file_name)</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span>{</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> <span class="comment">//Load model data and parse it using assimp.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> std::string_view file_name_sv(file_name);</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> Assimp::Importer importer;</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">const</span> aiScene* scene = importer.ReadFile(file_name, USING_ASSIMP_DEFAULT_FLAGS);</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keywordflow">if</span>(!scene)</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> std::cout << <span class="stringliteral">"Failed to load scene:\t"</span> << file_name << <span class="charliteral">'\n'</span>;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="keywordtype">size_t</span> last_slash_pos = file_name_sv.rfind(<span class="stringliteral">"/"</span>) + 1; <span class="comment">//+1 to include the "/"</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> std::string file_directory(file_name_sv.substr(0, last_slash_pos));</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> ModelPrimitives data;</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> data.meshes.reserve(scene->mNumMeshes);</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="comment">//Iterate over the meshes in the model.</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> mesh = 0; mesh < scene->mNumMeshes; ++mesh)</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> {</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> std::vector<fpr::Vertex> mesh_vertices;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> std::vector<uint32_t> mesh_indices;</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> aiMesh* current_mesh = scene->mMeshes[mesh];</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> aiMaterial* material = scene->mMaterials[current_mesh->mMaterialIndex];</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordtype">bool</span> using_normals = current_mesh->HasNormals();</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="comment">//Potential materials to be used.</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> aiString albedo_path;</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> aiString metal;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> aiString ao;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> aiString normal;</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> aiString bump;</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> aiString roughness;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="comment">//Output the available materials, mostly for debugging purposes.</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">for</span>(<span class="keyword">auto</span>& [name, type] : ASSIMP_TEXTURE_TYPES)</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> {</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> aiString mat_name;</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordflow">if</span>(material->GetTexture(type, 0, &mat_name) == aiReturn_SUCCESS)</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> printf(<span class="stringliteral">"%s\t %s\n"</span>, name, mat_name.C_Str());</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> }</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="comment">//Store diffuse map.</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> material->GetTexture(aiTextureType_DIFFUSE, 0, &albedo_path);</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> std::string full_albedo_path(file_directory);</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> full_albedo_path.append(albedo_path.C_Str());</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="comment">//Store primitves, such as UVs, vertices, normals and tangents.</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> vert = 0; vert < current_mesh->mNumVertices; ++vert)</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> {</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <a class="code hl_struct" href="structfpr_1_1_vertex.html">fpr::Vertex</a> vertex;</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> vertex.position.x = current_mesh->mVertices[vert].x;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> vertex.position.y = current_mesh->mVertices[vert].y;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> vertex.position.z = current_mesh->mVertices[vert].z;</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordflow">if</span>(current_mesh->HasTextureCoords(0))</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> {</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> vertex.uv.x = current_mesh->mTextureCoords[0][vert].x;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> vertex.uv.y = current_mesh->mTextureCoords[0][vert].y;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> }</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">if</span>(using_normals)</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> {</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> vertex.normal.x = current_mesh->mNormals[vert].x;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> vertex.normal.y = current_mesh->mNormals[vert].y;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> vertex.normal.z = current_mesh->mNormals[vert].z;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> }</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">if</span>(current_mesh->HasTangentsAndBitangents())</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> {</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> vertex.tangent.x = current_mesh->mTangents[vert].x;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> vertex.tangent.y = current_mesh->mTangents[vert].y;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> vertex.tangent.z = current_mesh->mTangents[vert].z;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> mesh_vertices.push_back(vertex);</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> face = 0; face < current_mesh->mNumFaces; ++face)</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> {</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> aiFace* current_face = &current_mesh->mFaces[face];</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> mesh_indices.push_back(current_face->mIndices[0]);</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> mesh_indices.push_back(current_face->mIndices[1]);</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> mesh_indices.push_back(current_face->mIndices[2]);</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> }</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> data.indices.insert(std::end(data.indices), std::begin(mesh_indices), std::end(mesh_indices));</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> data.vertices.insert(std::end(data.vertices), std::begin(mesh_vertices), std::end(mesh_vertices));</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> vk::DeviceSize index_offset = data.indices.size() - mesh_indices.size();</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> vk::DeviceSize vertex_offset = <span class="keyword">sizeof</span> Vertex * data.vertices.size() - <span class="keyword">sizeof</span> Vertex * mesh_vertices.size();</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> data.meshes.emplace_back(</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> mesh_index,</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> (vk::DeviceSize)index_offset,</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> (uint32_t)mesh_indices.size(),</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> vertex_offset,</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> (uint32_t)mesh_vertices.size(),</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> full_albedo_path);</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> mesh_index++;</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> }</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordflow">return</span> data;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span>}</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span>} <span class="comment">// namespace fpr</span></div>
<div class="ttc" id="astructfpr_1_1_vertex_html"><div class="ttname"><a href="structfpr_1_1_vertex.html">fpr::Vertex</a></div><div class="ttdef"><b>Definition:</b> <a href="_vertex_8h_source.html#l00012">Vertex.h:13</a></div></div>
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