1 | // %flair:license{
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2 | // This file is part of the Flair framework distributed under the
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3 | // CECILL-C License, Version 1.0.
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4 | // %flair:license}
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5 | // created: 2013/08/02
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6 | // filename: Parser.cpp
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7 | //
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8 | // author: César Richard
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9 | // Copyright Heudiasyc UMR UTC/CNRS 7253
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10 | //
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11 | // version: $Id: $
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12 | //
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13 | // purpose: classe chargeant un XML decrivant une map
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14 | //
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15 | /*********************************************************************/
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16 | #ifdef GL
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17 |
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18 | #include "Parser.h"
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19 | #include "Simulator.h"
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20 | #include "FixedCamera.h"
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21 | #include "GenericObject.h"
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22 | #include <vector3d.h>
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23 | #include <Vector3D.h>
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24 | #include <IrrlichtDevice.h>
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25 | #include <IFileSystem.h>
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26 | #include <IAnimatedMesh.h>
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27 | #include <IGeometryCreator.h>
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28 | #include <ISceneManager.h>
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29 |
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30 | using namespace irr;
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31 | using namespace irr::core;
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32 | using namespace irr::scene;
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33 | using namespace irr::video;
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34 | using namespace flair::core;
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35 | using namespace flair::simulator;
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36 |
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37 | // todo: getMeshVect doit plutot donner point3D et euler
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38 | // adaptr le xml et la dtd
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39 |
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40 | namespace flair {
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41 | namespace simulator {
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42 | Parser::Parser(int app_width, int app_height,
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43 | int scene_width, int scene_height, std::string media_path,
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44 | std::string xmlFile)
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45 | : Gui("Parser", app_width, app_height, scene_width, scene_height,
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46 | media_path) {
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47 | this->media_path = media_path;
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48 | xmlNode *root_element = NULL;
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49 | doc = xmlReadFile(xmlFile.c_str(), NULL, 0);
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50 | xmlDtdPtr dtd = NULL;
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51 | dtd = xmlParseDTD(NULL,
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52 | (const xmlChar *)(media_path.append("/scene.dtd").c_str()));
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53 |
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54 | if (dtd == NULL) {
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55 | // xmlGenericError(xmlGenericErrorContext,
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56 | Err("Could not parse DTD scene.dtd\n");
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57 | } else {
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58 | xmlValidCtxt cvp;
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59 | cvp.userData = (void *)stderr;
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60 | cvp.error = (xmlValidityErrorFunc)fprintf;
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61 | cvp.warning = (xmlValidityWarningFunc)fprintf;
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62 | if (!xmlValidateDtd(&cvp, doc, dtd)) {
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63 | // xmlGenericError(xmlGenericErrorContext,
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64 | Err("Document does not validate against scene.dtd\n");
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65 | }
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66 | }
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67 |
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68 | if (doc == NULL) {
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69 | Err("error: could not parse file %s\n", xmlFile.c_str());
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70 | } else {
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71 | /*
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72 | * Get the root element node
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73 | */
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74 | root_element = xmlDocGetRootElement(doc);
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75 | processElements(root_element);
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76 | }
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77 | }
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78 |
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79 | Parser::~Parser() {
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80 | if (doc != NULL) {
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81 | /*
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82 | * free the document
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83 | */
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84 | xmlFreeDoc(doc);
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85 | ;
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86 | }
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87 | /*
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88 | *Free the global variables that may
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89 | *have been allocated by the parser.
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90 | */
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91 | xmlCleanupParser();
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92 | }
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93 |
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94 | /* Recursive function that prints the XML structure */
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95 | void Parser::processElements(xmlNode *a_node) {
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96 | xmlNode *cur_node = NULL;
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97 | for (cur_node = a_node; cur_node; cur_node = cur_node->next) {
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98 | if (cur_node->type == XML_ELEMENT_NODE) {
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99 | if (xmlStrEqual(cur_node->name, (xmlChar *)"params")) {
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100 | processParams(cur_node->children);
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101 | } else if (xmlStrEqual(cur_node->name, (xmlChar *)"objects")) {
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102 | processObjects(cur_node->children);
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103 | } else {
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104 | processElements(cur_node->children);
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105 | }
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106 | }
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107 | }
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108 | }
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109 |
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110 | void Parser::processObjects(xmlNode *a_node) {
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111 | xmlNode *cur_node = NULL;
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112 |
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113 | for (cur_node = a_node; cur_node; cur_node = cur_node->next) {
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114 | if (xmlStrEqual(cur_node->name, (xmlChar *)"mesh")) {
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115 | FILE *fp;
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116 | std::string fileName = this->media_path+"/";
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117 | fp = NULL;
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118 | fp = fopen(fileName.append((char *)xmlGetProp(
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119 | cur_node, (xmlChar *)"model")).c_str(),"rb");
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120 | if (fp != NULL) {
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121 | GenericObject *object =
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122 | new GenericObject(getGui()->getMesh((char *)xmlGetProp(cur_node, (xmlChar *)"model")));
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123 | object->setPosition(
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124 | getMeshVect(cur_node->children, (xmlChar *)"position"));
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125 | object->setRotation(
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126 | getMeshVect(cur_node->children, (xmlChar *)"rotation"));
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127 | object->setScale(getMeshVect(cur_node->children, (xmlChar *)"scale"));
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128 | } else {
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129 | Err("FATAL ERROR : File %s %s doesn't exist !\r\n",
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130 | (char *)xmlGetProp(cur_node, (xmlChar *)"model"),fileName.c_str());
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131 | }
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132 | } else if (xmlStrEqual(cur_node->name, (xmlChar *)"cylinder")) {
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133 | const IGeometryCreator *geo;
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134 | geo = getGui()->getSceneManager()->getGeometryCreator();
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135 | IMesh* mesh=geo->createCylinderMesh(
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136 | ToIrrlichtScale(atof((char *)xmlGetProp(cur_node, (xmlChar *)"radius"))),
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137 | ToIrrlichtScale(atof((char *)xmlGetProp(cur_node, (xmlChar *)"length"))),
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138 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"tesselation")),
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139 | getScolor(cur_node->children));
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140 | //SColor(100, 255, 100, 100));
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141 | GenericObject *object = new GenericObject(mesh);
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142 | object->setPosition(getMeshVect(cur_node->children, (xmlChar *)"position"));
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143 | object->setRotation(getMeshVect(cur_node->children, (xmlChar *)"rotation"));
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144 | object->setScale(getMeshVect(cur_node->children, (xmlChar *)"scale"));
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145 | } else if (xmlStrEqual(cur_node->name, (xmlChar *)"eight")) {
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146 | const IGeometryCreator *geo;
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147 | geo = getGui()->getSceneManager()->getGeometryCreator();
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148 | IMesh* mesh=geo->createCubeMesh(
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149 | vector3df(atof((char *)xmlGetProp(cur_node, (xmlChar *)"length")),
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150 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"width")),
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151 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"eight"))));
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152 |
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153 | GenericObject *object =new GenericObject(mesh);
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154 | object->setPosition(
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155 | getMeshVect(cur_node->children, (xmlChar *)"position"));
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156 | object->setRotation(
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157 | getMeshVect(cur_node->children, (xmlChar *)"rotation"));
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158 | object->setScale(getMeshVect(cur_node->children, (xmlChar *)"scale"));
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159 | }
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160 | }
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161 | }
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162 |
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163 | void Parser::processParams(xmlNode *a_node) {
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164 |
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165 | xmlNode *cur_node = NULL;
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166 | for (cur_node = a_node; cur_node; cur_node = cur_node->next) {
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167 | if (xmlStrEqual(cur_node->name, (xmlChar *)"archive")) {
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168 | std::string file =
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169 | media_path + "/" + (char *)xmlGetProp(cur_node, (xmlChar *)"path");
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170 | getDevice()->getFileSystem()->addFileArchive(file.c_str());
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171 | } else if (xmlStrEqual(cur_node->name, (xmlChar *)"mesh")) {
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172 | setMesh((char *)xmlGetProp(cur_node, (xmlChar *)"model"),
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173 | getSceneVect(cur_node->children, (xmlChar *)"position"),
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174 | getSceneVect(cur_node->children, (xmlChar *)"rotation"),
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175 | getSceneVect(cur_node->children, (xmlChar *)"scale", true));
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176 | } else if (xmlStrEqual(cur_node->name, (xmlChar *)"camera")) {
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177 | FixedCamera* fixedCamera=new FixedCamera(std::string((char *)xmlGetProp(cur_node, (xmlChar *)"name")),
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178 | getMeshVector3D(cur_node->children, (xmlChar *)"position"),
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179 | getMeshVector3D(cur_node->children, (xmlChar *)"lookat"));
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180 | }
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181 | }
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182 | }
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183 |
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184 | SColor Parser::getScolor(xmlNode *mesh_node) {
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185 | xmlNode *cur_node = NULL;
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186 | for (cur_node = mesh_node; cur_node; cur_node = cur_node->next) {
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187 | if (xmlStrEqual(cur_node->name, (xmlChar *)"color")) {
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188 | return SColor(atoi((char *)xmlGetProp(cur_node, (xmlChar *)"a")),
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189 | atoi((char *)xmlGetProp(cur_node, (xmlChar *)"r")),
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190 | atoi((char *)xmlGetProp(cur_node, (xmlChar *)"g")),
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191 | atoi((char *)xmlGetProp(cur_node, (xmlChar *)"b")));
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192 | }
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193 | }
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194 | return SColor(255,0, 0, 0);
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195 | }
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196 |
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197 | // todo rendre un vector3D framework
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198 | // retirer irr::core::vector3df ToIrrlichtCoordinates(irr::core::vector3df
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199 | // vect);
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200 | vector3df Parser::getMeshVect(xmlNode *mesh_node, xmlChar *param) {
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201 | xmlNode *cur_node = NULL;
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202 | for (cur_node = mesh_node; cur_node; cur_node = cur_node->next) {
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203 | if (xmlStrEqual(cur_node->name, param)) {
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204 | return vector3df(atof((char *)xmlGetProp(cur_node, (xmlChar *)"x")),
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205 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"y")),
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206 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"z")));
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207 | }
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208 | }
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209 | return vector3df(0, 0, 0);
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210 | }
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211 |
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212 | Vector3Df Parser::getMeshVector3D(xmlNode *mesh_node, xmlChar *param) {
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213 | xmlNode *cur_node = NULL;
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214 | for (cur_node = mesh_node; cur_node; cur_node = cur_node->next) {
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215 | if (xmlStrEqual(cur_node->name, param)) {
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216 | return Vector3Df(atof((char *)xmlGetProp(cur_node, (xmlChar *)"x")),
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217 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"y")),
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218 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"z")));
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219 | }
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220 | }
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221 | return Vector3Df(0, 0, 0);
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222 | }
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223 |
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224 | vector3df Parser::getSceneVect(xmlNode *mesh_node, xmlChar *param,
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225 | bool isScale) {
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226 | xmlNode *cur_node = NULL;
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227 | for (cur_node = mesh_node; cur_node; cur_node = cur_node->next) {
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228 | if (xmlStrEqual(cur_node->name, param)) {
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229 | if (isScale) {
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230 | return vector3df(atof((char *)xmlGetProp(cur_node, (xmlChar *)"x")),
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231 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"z")),
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232 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"y")));
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233 | }
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234 | return vector3df(atof((char *)xmlGetProp(cur_node, (xmlChar *)"x")),
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235 | -atof((char *)xmlGetProp(cur_node, (xmlChar *)"z")),
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236 | atof((char *)xmlGetProp(cur_node, (xmlChar *)"y")));
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237 | }
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238 | }
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239 | return vector3df(0, 0, 0);
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240 | }
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241 |
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242 | } // end namespace simulator
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243 | } // end namespace flair
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244 | #endif // GL
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