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annotate dmmodel.h @ 19:a329f0216491

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Implement PLY file format parsing and extremely simplistic scene setup file format. Not finished yet.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 07 Nov 2019 20:15:33 +0200
parents
children 1404dfcee7b8
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19
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1 //
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2 //
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3 //
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4 #ifndef DMMODEL_H
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5 #define DMMODEL_H 1
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6
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7 #include "dmutil.h"
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8 #include <cstdint>
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9 #include <fstream>
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10 #include <unordered_map>
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12
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13 #define PLY_PROP_VERTEX_INDICES "vertex_indices"
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14 #define PLY_ELEM_FACE "face"
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15 #define PLY_ELEM_VERTEX "vertex"
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17
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18 enum DMPLYFormat
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19 {
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20 PLY_FMT_UNKNOWN,
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21 PLY_FMT_ASCII,
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22 PLY_FMT_BIN_LE,
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23 PLY_FMT_BIN_BE
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24 };
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25
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26
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27 enum DMPLYPropType
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28 {
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29 PLY_TYPE_NONE,
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30 PLY_TYPE_LIST,
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31
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32 PLY_TYPE_UINT8,
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33 PLY_TYPE_INT8,
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34 PLY_TYPE_INT16,
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35 PLY_TYPE_UINT16,
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36 PLY_TYPE_INT32,
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37 PLY_TYPE_UINT32,
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38 PLY_TYPE_FLOAT,
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39 PLY_TYPE_DOUBLE
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40 };
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41
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42
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43 /* Structures
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44 */
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45 union DMPLYPropValue
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46 {
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47 double v_double;
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48 float v_float;
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49 unsigned int v_uint;
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50 int v_int;
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51 };
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52
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53
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54 struct DMPLYFileProperty
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55 {
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56 std::string name;
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57 DMPLYPropType
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58 type,
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59 list_num_type,
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60 list_values_type;
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61
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62 DMPLYPropValue value, list_num_value;
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63 std::vector<DMPLYPropValue> list_values;
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64 };
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65
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66
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67 struct DMPLYFileElement
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68 {
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69 int value;
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70 std::string name;
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71
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72 std::unordered_map<std::string, DMPLYFileProperty> prop_map;
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73 std::vector<DMPLYFileProperty *> properties;
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74
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75 DMPLYFileProperty *checkProp(const std::string &prop)
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76 {
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77 if (prop_map.count(prop))
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78 return &prop_map[prop];
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79 else
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80 return 0;
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81 }
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82 };
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83
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84
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85 struct DMTextFileInfo
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86 {
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87 int nline, state;
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88 std::string filename;
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89 std::string line;
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90 std::ifstream file;
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91 };
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92
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93
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94 struct DMPLYFileInfo : DMTextFileInfo
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95 {
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96 DMPLYFormat format;
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97
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98 std::unordered_map<std::string, DMPLYFileElement> elem_map;
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99 std::vector<DMPLYFileElement *> elements;
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100 DMPLYFileElement *element;
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101
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102 DMPLYFileInfo()
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103 {
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104 element = 0;
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105 format = PLY_FMT_UNKNOWN;
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106 }
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107
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108 DMPLYFileElement *checkElem(const std::string &elem)
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109 {
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110 if (elem_map.count(elem))
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111 return &elem_map[elem];
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112 else
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113 return 0;
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114 }
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115 };
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116
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117
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118 struct DMColor
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119 {
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120 int r, g, b, alpha;
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121 };
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122
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123
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124 struct DMVertex
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125 {
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126 float x, y, z;
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127 };
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128
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129
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130 struct DMModel
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131 {
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132 int nvertices, nfaces;
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133 std::vector<DMVertex> vertices, normals;
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134 std::vector<unsigned int> faces;
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135
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136 DMColor color;
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137 DMVertex translate, scale, rotate;
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138
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139 unsigned int id_prog, id_fs, id_vs;
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140
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141 bool loadFromPLY(const std::string &filename);
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142 bool loadFromPLY(const std::string &filename, DMPLYFileInfo &info);
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143
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144 void printInfo()
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145 {
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146 printf(
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147 "MODEL: scale <%1.5f, %1.5f, %1.5f>\n"
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148 "MODEL: translate <%1.5f, %1.5f, %1.5f>\n"
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149 "MODEL: rotate <%1.5f, %1.5f, %1.5f>\n"
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150 ,
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151 scale.x, scale.y, scale.z,
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152 translate.x, translate.y, translate.z,
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153 rotate.x, rotate.y, rotate.z);
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154 }
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155
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156 DMModel()
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157 {
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158 translate.x = translate.y = translate.z = 0;
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159 rotate.x = rotate.y = rotate.z = 0;
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160 scale.x = scale.y = scale.z = 1;
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161 }
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162 };
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163
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164
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165 struct DMLight
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166 {
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167 DMVertex pos;
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168 float ambient[4], diffuse[4], specular[4];
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169 };
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170
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171
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172 struct DMCamera
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173 {
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174 DMVertex pos, lookAt;
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175 };
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176
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177
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178 struct DMSimpleScene
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179 {
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180 DMModel model;
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181 DMCamera camera;
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182 std::vector<DMLight> lights;
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183
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184 bool loadInfo(const std::string &filename);
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185 };
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186
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187 #endif