source: flair-src/trunk/lib/FlairSimulator/src/Parser.cpp@ 426

Last change on this file since 426 was 426, checked in by Sanahuja Guillaume, 8 months ago

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