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annotate dmmodel.h @ 48:0ae1ff609626

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Implement diffuse setting for models in scenefile. Also refactor parsing/handling of ambient/diffuse/specular values and unify it for both models and lights.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 06 Dec 2019 01:12:23 +0200
parents 73a785323e8a
children 8b335eb444ae
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1 //
22
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2 // GLDragon - OpenGL PLY model viewer / simple benchmark
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3 // -- Scene and model handling + PLY file parsing
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4 // Programmed and designed by Matti 'ccr' Hämäläinen <ccr@tnsp.org>
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5 // (C) Copyright 2019 Tecnic Software productions (TNSP)
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6 //
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7 // See file "COPYING" for license information.
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8 //
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9 #ifndef DMMODEL_H
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10 #define DMMODEL_H 1
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11
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12 #include "dmutil.h"
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13 #include <cstdint>
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14 #include <fstream>
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15 #include <unordered_map>
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16
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17
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18 #define PLY_PROP_VERTEX_INDICES "vertex_indices"
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19 #define PLY_ELEM_FACE "face"
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20 #define PLY_ELEM_VERTEX "vertex"
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23 enum DMPLYFormat
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24 {
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25 PLY_FMT_UNKNOWN,
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26 PLY_FMT_ASCII,
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27 PLY_FMT_BIN_LE,
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28 PLY_FMT_BIN_BE
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29 };
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30
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31
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32 enum DMPLYPropType
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33 {
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34 PLY_TYPE_NONE,
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35 PLY_TYPE_LIST,
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36
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37 PLY_TYPE_UINT8,
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38 PLY_TYPE_INT8,
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39 PLY_TYPE_INT16,
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40 PLY_TYPE_UINT16,
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41 PLY_TYPE_INT32,
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42 PLY_TYPE_UINT32,
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43 PLY_TYPE_FLOAT,
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44 PLY_TYPE_DOUBLE
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45 };
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46
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47
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48 /* Structures
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49 */
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50 union DMPLYPropValue
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51 {
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52 double v_double;
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53 float v_float;
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54 unsigned int v_uint;
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55 int v_int;
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56 };
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57
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58
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59 struct DMPLYFileProperty
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60 {
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61 std::string name;
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62 DMPLYPropType
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63 type,
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64 list_num_type,
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65 list_values_type;
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66
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67 DMPLYPropValue value, list_num_value;
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68 std::vector<DMPLYPropValue> list_values;
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69 };
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70
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71
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72 struct DMPLYFileElement
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73 {
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74 int value;
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75 std::string name;
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76
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77 std::unordered_map<std::string, DMPLYFileProperty> prop_map;
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78 std::vector<DMPLYFileProperty *> properties;
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79
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80 DMPLYFileProperty *checkProp(const std::string &prop)
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81 {
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82 if (prop_map.count(prop))
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83 return &prop_map[prop];
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84 else
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85 return 0;
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86 }
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87 };
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88
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89
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90 struct DMTextFileInfo
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91 {
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92 int nline, state;
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93 std::string filename;
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94 std::string line;
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95 std::ifstream file;
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96 std::string *key;
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97 };
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98
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99
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100 struct DMPLYFileInfo : DMTextFileInfo
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101 {
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102 DMPLYFormat format;
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103
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104 std::unordered_map<std::string, DMPLYFileElement> elem_map;
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105 std::vector<DMPLYFileElement *> elements;
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106 DMPLYFileElement *element;
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107
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108 DMPLYFileInfo()
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109 {
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110 element = 0;
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111 format = PLY_FMT_UNKNOWN;
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112 }
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113
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114 DMPLYFileElement *checkElem(const std::string &elem)
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115 {
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116 if (elem_map.count(elem))
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117 return &elem_map[elem];
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118 else
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119 return 0;
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120 }
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121 };
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122
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123
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124 struct DMVector3
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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 union DMVector4
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131 {
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132 struct { float x, y, z, w; } p;
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133 struct { float r, g, b, a; } c;
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134 float values[4];
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135 };
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136
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137
48
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138 struct DMMaterial
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139 {
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140 DMVector4 ambient, diffuse, specular;
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141 int shininess;
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142 };
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143
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144
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145 struct DMModel
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146 {
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147 int nvertices, nfaces;
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148 std::vector<DMVector3> vertices, normals;
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149 std::vector<unsigned int> faces;
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150
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151 DMMaterial material;
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152 DMVector3 translate, scale, rotate;
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153 bool translateSet, scaleSet, rotateSet;
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154
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155 unsigned int id_prog, id_fs, id_vs;
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156
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157 std::string
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158 modelFile,
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159 fragShaderFile, vertShaderFile,
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160 fragShaderStr, vertShaderStr;
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161
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162 bool loadFromPLY(const std::string &filename);
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163 bool loadFromPLY(const std::string &filename, DMPLYFileInfo &info);
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164
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165 DMModel()
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166 {
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167 nfaces = nvertices = 0;
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168
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169 translate.x = translate.y = translate.z = 0;
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170 rotate.x = rotate.y = rotate.z = 0;
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171 scale.x = scale.y = scale.z = 0;
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172 translateSet = rotateSet = scaleSet = false;
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173
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174 material.diffuse.c.r = material.diffuse.p.z = 0.56471f;
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175 material.diffuse.c.g = 0.5f;
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176 material.diffuse.c.a = 1.0f;
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177
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178 material.specular.c.r = material.specular.c.g = material.specular.c.b = 0.8f;
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179 material.specular.c.a = 1.0f;
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180
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181 material.shininess = 96;
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182 }
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183 };
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184
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185
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186 struct DMLight
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187 {
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188 DMMaterial color;
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189 DMVector4 position, pointAt;
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190
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191 DMLight()
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192 {
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193 color.ambient.c.r = color.ambient.c.g = color.ambient.p.z = 0.2f; color.ambient.c.a = 1.0f;
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194 color.diffuse.c.r = color.diffuse.c.g = color.diffuse.p.z = 0.8f; color.diffuse.c.a = 1.0f;
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195 color.specular.c.r = color.specular.c.g = color.specular.p.z = 0.5f; color.specular.c.a = 1.0f;
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196
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197 position.p.x = 10.0f;
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198 position.p.y = 10.0f;
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199 position.p.z = 0.0f;
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200 }
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201 };
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202
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203
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204 struct DMCamera
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205 {
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206 DMVector4 position, pointAt;
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207 };
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208
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209
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210 struct DMSimpleScene
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211 {
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212 DMCamera camera;
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213 std::vector<DMLight> lights;
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214 std::vector<DMModel> models;
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215
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216 bool loadInfo(const std::string &filename);
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217 };
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218
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219 #endif