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annotate dmmodel.h @ 21:1404dfcee7b8

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More work on scenefile and model loading support. Can now load PLY models and simple scene definition files. Converted dragon mesh to binary PLY format.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 22 Nov 2019 03:03:52 +0200
parents a329f0216491
children 03b86b9c2f29
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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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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 std::string *key;
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92 };
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93
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94
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95 struct DMPLYFileInfo : DMTextFileInfo
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96 {
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97 DMPLYFormat format;
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98
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99 std::unordered_map<std::string, DMPLYFileElement> elem_map;
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100 std::vector<DMPLYFileElement *> elements;
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101 DMPLYFileElement *element;
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102
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103 DMPLYFileInfo()
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104 {
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105 element = 0;
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106 format = PLY_FMT_UNKNOWN;
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107 }
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108
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109 DMPLYFileElement *checkElem(const std::string &elem)
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110 {
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111 if (elem_map.count(elem))
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112 return &elem_map[elem];
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113 else
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114 return 0;
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115 }
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116 };
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117
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118
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119 struct DMColor
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120 {
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121 int r, g, b, alpha;
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122 };
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123
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124
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125 struct DMVector3
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126 {
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127 float x, y, z;
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128 };
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129
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130
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131 struct DMVector4
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132 {
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133 float x, y, z, w;
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134 };
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135
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136
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137 struct DMModel
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138 {
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139 int nvertices, nfaces;
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140 std::vector<DMVector3> vertices, normals;
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141 std::vector<unsigned int> faces;
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142
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143 DMColor color;
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144 DMVector3 translate, scale, rotate;
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145
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146 unsigned int id_prog, id_fs, id_vs;
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147
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148 std::string
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149 modelFile,
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150 fragShaderFile, vertShaderFile,
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151 fragShaderStr, vertShaderStr;
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152
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153 bool loadFromPLY(const std::string &filename);
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154 bool loadFromPLY(const std::string &filename, DMPLYFileInfo &info);
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155
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156 void printInfo()
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157 {
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158 printf(
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159 "MODEL: scale <%1.5f, %1.5f, %1.5f>\n"
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160 "MODEL: translate <%1.5f, %1.5f, %1.5f>\n"
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161 "MODEL: rotate <%1.5f, %1.5f, %1.5f>\n"
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162 ,
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163 scale.x, scale.y, scale.z,
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164 translate.x, translate.y, translate.z,
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165 rotate.x, rotate.y, rotate.z);
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166 }
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167
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168 DMModel()
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169 {
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170 nfaces = nvertices = 0;
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171
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172 translate.x = translate.y = translate.z = 0;
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173 rotate.x = rotate.y = rotate.z = 0;
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174 scale.x = scale.y = scale.z = 1;
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175 }
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176 };
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177
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178
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179 struct DMLight
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180 {
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181 DMVector3 pos, pointAt;
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182 DMVector4 ambient, diffuse, specular;
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183 };
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184
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185
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186 struct DMCamera
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187 {
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188 DMVector3 pos, pointAt;
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189 };
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190
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191
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192 struct DMSimpleScene
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193 {
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194 DMCamera camera;
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195 std::vector<DMLight> lights;
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196 std::vector<DMModel> models;
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197
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198 bool loadInfo(const std::string &filename);
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199 };
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200
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201 #endif