[CC]Mesh文件保存
2024-05-10 13:30:14
CC中有两个地方使用了文件保存，一个是MainWindow，另一个是ccCommandLineParser。
MainWindow的保存按钮关联的槽是doActionSaveFile()方法，实现了点云和Mesh的保存。
1 void MainWindow::doActionSaveFile()
2 {
3 size_t selNum = m_selectedEntities.size();
4 if (selNum == 0)
5 return;
6
7 ccHObject clouds("clouds");
8 ccHObject meshes("meshes");
9 ccHObject images("images");
10 ccHObject polylines("polylines");
11 ccHObject other("other");
12 ccHObject otherSerializable("serializable");
13 ccHObject::Container entitiesToDispatch;
14 entitiesToDispatch.insert(entitiesToDispatch.begin(),m_selectedEntities.begin(),m_selectedEntities.end());
15 ccHObject entitiesToSave;
16 while (!entitiesToDispatch.empty())
17 {
18 ccHObject* child = entitiesToDispatch.back();
19 entitiesToDispatch.pop_back();
20
21 if (child->isA(CC_TYPES::HIERARCHY_OBJECT))
22 {
23 for (unsigned j=0; j<child->getChildrenNumber(); ++j)
24 entitiesToDispatch.push_back(child->getChild(j));
25 }
26 else
27 {
28 //we put the entity in the container corresponding to its type
29 ccHObject* dest = 0;
30 if (child->isA(CC_TYPES::POINT_CLOUD))
31 dest = &clouds;
32 else if (child->isKindOf(CC_TYPES::MESH))
33 dest = &meshes;
34 else if (child->isKindOf(CC_TYPES::IMAGE))
35 dest = &images;
36 else if (child->isKindOf(CC_TYPES::POLY_LINE))
37 dest = &polylines;
38 else if (child->isSerializable())
39 dest = &otherSerializable;
40 else
41 dest = &other;
42
43 assert(dest);
44
45 //we don't want double insertions if the user has clicked both the father and child
46 if (!dest->find(child->getUniqueID()))
47 {
48 dest->addChild(child,ccHObject::DP_NONE);
49 entitiesToSave.addChild(child,ccHObject::DP_NONE);
50 }
51 }
52 }
53
54 bool hasCloud = (clouds.getChildrenNumber() != 0);
55 bool hasMesh = (meshes.getChildrenNumber() != 0);
56 bool hasImages = (images.getChildrenNumber() != 0);
57 bool hasPolylines = (polylines.getChildrenNumber() != 0);
58 bool hasSerializable = (otherSerializable.getChildrenNumber() != 0);
59 bool hasOther = (other.getChildrenNumber() != 0);
60
61 int stdSaveTypes = static_cast<int>(hasCloud)
62 + static_cast<int>(hasMesh)
63 + static_cast<int>(hasImages)
64 + static_cast<int>(hasPolylines)
65 + static_cast<int>(hasSerializable);
66 if (stdSaveTypes == 0)
67 {
68 ccConsole::Error("Can't save selected entity(ies) this way!");
69 return;
70 }
71
72 //we set up the right file filters, depending on the selected
73 //entities type (cloud, mesh, etc.).
74 QStringList fileFilters;
75 {
76 const FileIOFilter::FilterContainer& filters = FileIOFilter::GetFilters();
77 for (size_t i=0; i<filters.size(); ++i)
78 {
79 bool atLeastOneExclusive = false;
80
81 //current I/O filter
82 const FileIOFilter::Shared filter = filters[i];
83
84 //does this filter can export one or several clouds?
85 bool canExportClouds = true;
86 if (hasCloud)
87 {
88 bool isExclusive = true;
89 bool multiple = false;
90 canExportClouds = ( filter->canSave(CC_TYPES::POINT_CLOUD,multiple,isExclusive)
91 && (multiple || clouds.getChildrenNumber() == 1) );
92 atLeastOneExclusive |= isExclusive;
93 }
94
95 //does this filter can export one or several meshes?
96 bool canExportMeshes = true;
97 if (hasMesh)
98 {
99 bool isExclusive = true;
100 bool multiple = false;
101 canExportMeshes = ( filter->canSave(CC_TYPES::MESH,multiple,isExclusive)
102 && (multiple || meshes.getChildrenNumber() == 1) );
103 atLeastOneExclusive |= isExclusive;
104 }
105
106 //does this filter can export one or several polylines?
107 bool canExportPolylines = true;
108 if (hasPolylines)
109 {
110 bool isExclusive = true;
111 bool multiple = false;
112 canExportPolylines = ( filter->canSave(CC_TYPES::POLY_LINE,multiple,isExclusive)
113 && (multiple || polylines.getChildrenNumber() == 1) );
114 atLeastOneExclusive |= isExclusive;
115 }
116
117 //does this filter can export one or several images?
118 bool canExportImages = true;
119 if (hasImages)
120 {
121 bool isExclusive = true;
122 bool multiple = false;
123 canExportImages = ( filter->canSave(CC_TYPES::IMAGE,multiple,isExclusive)
124 && (multiple || images.getChildrenNumber() == 1) );
125 atLeastOneExclusive |= isExclusive;
126 }
127
128 //does this filter can export one or several other serializable entities?
129 bool canExportSerializables = true;
130 if (hasSerializable)
131 {
132 //check if all entities have the same type
133 {
134 CC_CLASS_ENUM firstClassID = otherSerializable.getChild(0)->getUniqueID();
135 for (unsigned j=1; j<otherSerializable.getChildrenNumber(); ++j)
136 {
137 if (otherSerializable.getChild(j)->getUniqueID() != firstClassID)
138 {
139 //we add a virtual second 'stdSaveType' so as to properly handle exlusivity
140 ++stdSaveTypes;
141 break;
142 }
143 }
144 }
145
146 for (unsigned j=0; j<otherSerializable.getChildrenNumber(); ++j)
147 {
148 ccHObject* child = otherSerializable.getChild(j);
149 bool isExclusive = true;
150 bool multiple = false;
151 canExportSerializables &= ( filter->canSave(child->getUniqueID(),multiple,isExclusive)
152 && (multiple || otherSerializable.getChildrenNumber() == 1) );
153 atLeastOneExclusive |= isExclusive;
154 }
155 }
156
157 bool useThisFilter = canExportClouds
158 && canExportMeshes
159 && canExportImages
160 && canExportPolylines
161 && canExportSerializables
162 && (!atLeastOneExclusive || stdSaveTypes == 1);
163
164 if (useThisFilter)
165 {
166 QStringList ff = filter->getFileFilters(false);
167 for (int j=0; j<ff.size(); ++j)
168 fileFilters.append(ff[j]);
169 }
170 }
171 }
172
173 //persistent settings
174 QSettings settings;
175 settings.beginGroup(ccPS::SaveFile());
176
177 //default filter
178 QString selectedFilter = fileFilters.first();
179 if (hasCloud)
180 selectedFilter = settings.value(ccPS::SelectedOutputFilterCloud(),selectedFilter).toString();
181 else if (hasMesh)
182 selectedFilter = settings.value(ccPS::SelectedOutputFilterMesh(), selectedFilter).toString();
183 else if (hasImages)
184 selectedFilter = settings.value(ccPS::SelectedOutputFilterImage(), selectedFilter).toString();
185 else if (hasPolylines)
186 selectedFilter = settings.value(ccPS::SelectedOutputFilterPoly(), selectedFilter).toString();
187
188 //default output path (+ filename)
189 QString currentPath = settings.value(ccPS::CurrentPath(),QApplication::applicationDirPath()).toString();
190 QString fullPathName = currentPath;
191 if (selNum == 1)
192 {
193 //hierarchy objects have generally as name: 'filename.ext (fullpath)'
194 //so we must only take the first part! (otherwise this type of name
195 //with a path inside perturbs the QFileDialog a lot ;))
196 QString defaultFileName(m_selectedEntities.front()->getName());
197 if (m_selectedEntities.front()->isA(CC_TYPES::HIERARCHY_OBJECT))
198 {
199 QStringList parts = defaultFileName.split(' ',QString::SkipEmptyParts);
200 if (parts.size() > 0)
201 defaultFileName = parts[0];
202 }
203
204 //we remove the extension
205 defaultFileName = QFileInfo(defaultFileName).baseName();
206
207 if (!IsValidFileName(defaultFileName))
208 {
209 ccLog::Warning("[I/O] First entity's name would make an invalid filename! Can't use it...");
210 defaultFileName = "project";
211 }
212
213 fullPathName += QString("/") + defaultFileName;
214 }
215
216 //ask the user for the output filename
217 QString selectedFilename = QFileDialog::getSaveFileName(this,
218 "Save file",
219 fullPathName,
220 fileFilters.join(s_fileFilterSeparator),
221 &selectedFilter);
222
223 if (selectedFilename.isEmpty())
224 {
225 //process cancelled by the user
226 return;
227 }
228
229 //ignored items
230 if (hasOther)
231 {
232 ccConsole::Warning("[I/O] The following selected entites won't be saved:");
233 for (unsigned i=0; i<other.getChildrenNumber(); ++i)
234 ccConsole::Warning(QString("\t- %1s").arg(other.getChild(i)->getName()));
235 }
236
237 CC_FILE_ERROR result = CC_FERR_NO_ERROR;
238 FileIOFilter::SaveParameters parameters;
239 {
240 parameters.alwaysDisplaySaveDialog = true;
241 parameters.parentWidget = this;
242 }
243
244 //specific case: BIN format
245 if (selectedFilter == BinFilter::GetFileFilter())
246 {
247 if (selNum == 1)
248 {
249 result = FileIOFilter::SaveToFile(m_selectedEntities.front(),selectedFilename,parameters,selectedFilter);
250 }
251 else
252 {
253 //we'll regroup all selected entities in a temporary group
254 ccHObject tempContainer;
255 ConvertToGroup(m_selectedEntities,tempContainer,ccHObject::DP_NONE);
256 if (tempContainer.getChildrenNumber())
257 {
258 result = FileIOFilter::SaveToFile(&tempContainer,selectedFilename,parameters,selectedFilter);
259 }
260 else
261 {
262 ccLog::Warning("[I/O] None of the selected entities can be saved this way...");
263 result = CC_FERR_NO_SAVE;
264 }
265 }
266 }
267 else if (entitiesToSave.getChildrenNumber() != 0)
268 {
269 //ignored items
270 /*if (hasSerializable)
271 {
272 if (!hasOther)
273 ccConsole::Warning("[I/O] The following selected entites won't be saved:"); //display this warning only if not already done
274 for (unsigned i=0; i<otherSerializable.getChildrenNumber(); ++i)
275 ccConsole::Warning(QString("\t- %1").arg(otherSerializable.getChild(i)->getName()));
276 }
277 //*/
278
279 result = FileIOFilter::SaveToFile( entitiesToSave.getChildrenNumber() > 1 ? &entitiesToSave : entitiesToSave.getChild(0),
280 selectedFilename,
281 parameters,
282 selectedFilter);
283 }
284
285 //update default filters
286 if (hasCloud)
287 settings.setValue(ccPS::SelectedOutputFilterCloud(),selectedFilter);
288 if (hasMesh)
289 settings.setValue(ccPS::SelectedOutputFilterMesh(), selectedFilter);
290 if (hasImages)
291 settings.setValue(ccPS::SelectedOutputFilterImage(),selectedFilter);
292 if (hasPolylines)
293 settings.setValue(ccPS::SelectedOutputFilterPoly(), selectedFilter);
294
295 //we update current file path
296 currentPath = QFileInfo(selectedFilename).absolutePath();
297 settings.setValue(ccPS::CurrentPath(),currentPath);
298 settings.endGroup();
299 }void MainWindow::doActionSaveFile()
再看看ccCommandLineParser的Parse方法：
1 int ccCommandLineParser::Parse(int nargs, char** args)
2 {
3 if (!args || nargs < 2)
4 {
5 assert(false);
6 return EXIT_SUCCESS;
7 }
8
9 //reset default behavior(s)
10 s_loadParameters.autoComputeNormals = false;
11 s_MeshExportFormat = s_CloudExportFormat = BinFilter::GetFileFilter();
12 s_MeshExportExt = s_CloudExportExt = BinFilter::GetDefaultExtension();
13 s_precision = 12;
14 s_addTimestamp = true;
15 s_silentMode = false;
16 s_autoSaveMode = true;
17
18 //load arguments
19 QStringList arguments;
20 {
21 for (int i=1; i<nargs; ++i) //'i=1' because first argument is always program executable file!
22 arguments.push_back(QString(args[i]));
23 }
24 assert(!arguments.empty());
25
26 //specific command: silent mode (will prevent the console dialog from appearing!
27 if (IsCommand(arguments.front(),COMMAND_SILENT_MODE))
28 {
29 arguments.pop_front();
30 s_silentMode = true;
31 }
32
33 QDialog consoleDlg;
34 if (!s_silentMode)
35 {
36 //show console
37 Ui_commandLineDlg commandLineDlg;
38 commandLineDlg.setupUi(&consoleDlg);
39 consoleDlg.show();
40 ccConsole::Init(commandLineDlg.consoleWidget, &consoleDlg);
41 s_loadParameters.parentWidget = &consoleDlg;
42 }
43
44 //parse input
45 int result = ccCommandLineParser().parse(arguments,&consoleDlg);
46
47 if (!s_silentMode)
48 {
49 if (result == EXIT_SUCCESS)
50 QMessageBox::information(&consoleDlg,"Processed finished","Job done");
51 else
52 QMessageBox::warning(&consoleDlg,"Processed finished","An error occurred! Check console");
53 }
54
55 ccConsole::ReleaseInstance();
56
57 return result;
58 }int ccCommandLineParser::Parse(int nargs, char** args)
该方法被main函数调用。
1 //主程序入口，十分重要
2 int main(int argc, char **argv)
3 {
4 //QT initialiation
5 qccApplication app(argc, argv);
6
7 //Force 'english' local so as to get a consistent behavior everywhere
8 QLocale::setDefault(QLocale::English);
9
10 #ifdef Q_OS_LINUX
11 // we reset the numeric locale. As suggested in documetation
12 // see http://qt-project.org/doc/qt-5/qcoreapplication.html#locale-settings
13 // Basically - from doc: - "On Unix/Linux Qt is configured to use the system locale settings by default.
14 // This can cause a conflict when using POSIX functions, for instance,
15 // when converting between data types such as floats and strings"
16 setlocale(LC_NUMERIC,"C");
17 #endif
18
19 #ifdef USE_VLD
20 VLDEnable();
21 #endif
22
23 //splash screen
24 QSplashScreen* splash = 0;
25 QTime splashStartTime;
26
27 //Command line mode?
28 bool commandLine = (argc > 1 && argv[1][0] == '-');
29
30 //specific case: translation file selection
31 int lastArgumentIndex = 1;
32 QTranslator translator;
33 if (commandLine && QString(argv[1]).toUpper() == "-LANG")
34 {
35 QString langFilename = QString(argv[2]);
36
37 //Load translation file
38 if (translator.load(langFilename, QCoreApplication::applicationDirPath()))
39 {
40 qApp->installTranslator(&translator);
41 }
42 else
43 {
44 QMessageBox::warning(0, QObject::tr("Translation"), QObject::tr("Failed to load language file '%1'").arg(langFilename));
45 }
46 commandLine = false;
47 lastArgumentIndex = 3;
48 }
49
50 //command line mode
51 if (!commandLine)
52 {
53 //OpenGL?
54 if (!QGLFormat::hasOpenGL())
55 {
56 QMessageBox::critical(0, "Error", "This application needs OpenGL to run!");
57 return EXIT_FAILURE;
58 }
59
60 //splash screen
61 splashStartTime.start();
62 QPixmap pixmap(QString::fromUtf8(":/CC/images/imLogoV2Qt.png"));
63 splash = new QSplashScreen(pixmap,Qt::WindowStaysOnTopHint);
64 splash->show();
65 QApplication::processEvents();
66 }
67
68 //global structures initialization
69 ccTimer::Init();
70 FileIOFilter::InitInternalFilters(); //load all known I/O filters (plugins will come later!)
71 ccNormalVectors::GetUniqueInstance(); //force pre-computed normals array initialization
72 ccColorScalesManager::GetUniqueInstance(); //force pre-computed color tables initialization
73
74 int result = 0;
75
76 if (commandLine)
77 {
78 //command line processing (no GUI)
79 result = ccCommandLineParser::Parse(argc,argv);
80 }
81 else
82 {
83 //main window init.
84 MainWindow* mainWindow = MainWindow::TheInstance();
85 if (!mainWindow)
86 {
87 QMessageBox::critical(0, "Error", "Failed to initialize the main application window?!");
88 return EXIT_FAILURE;
89 }
90 mainWindow->show();
91 QApplication::processEvents();
92
93 if (argc > lastArgumentIndex)
94 {
95 if (splash)
96 splash->close();
97
98 //any additional argument is assumed to be a filename --> we try to load it/them
99 QStringList filenames;
100 for (int i = lastArgumentIndex; i<argc; ++i)
101 filenames << QString(argv[i]);
102
103 mainWindow->addToDB(filenames);
104 }
105
106 if (splash)
107 {
108 //we want the splash screen to be visible a minimum amount of time (1000 ms.)
109 while (splashStartTime.elapsed() < 1000)
110 {
111 splash->raise();
112 QApplication::processEvents(); //to let the system breath!
113 }
114
115 splash->close();
116 QApplication::processEvents();
117
118 delete splash;
119 splash = 0;
120 }
121
122 //let's rock!
123 try
124 {
125 result = app.exec();
126 }
127 catch(...)
128 {
129 QMessageBox::warning(0, "CC crashed!","Hum, it seems that CC has crashed... Sorry about that :)");
130 }
131 }
132
133 //release global structures
134 MainWindow::DestroyInstance();
135 FileIOFilter::UnregisterAll();
136
137 #ifdef CC_TRACK_ALIVE_SHARED_OBJECTS
138 //for debug purposes
139 unsigned alive = CCShareable::GetAliveCount();
140 if (alive > 1)
141 {
142 printf("Error: some shared objects (%u) have not been released on program end!",alive);
143 system("PAUSE");
144 }
145 #endif
146
147 return result;
148 }int main(int argc, char **argv)
两处最终都落实到FileIOFilter::SaveToFile()方法的调用。
1 //保存文件
2 CC_FILE_ERROR FileIOFilter::SaveToFile( ccHObject* entities,
3 const QString& filename,
4 SaveParameters& parameters,
5 QString fileFilter)
6 {
7 if (fileFilter.isEmpty())
8 return CC_FERR_BAD_ARGUMENT;
9 //获取对应的文件格式，存储器
10 Shared filter = GetFilter(fileFilter,false);
11 if (!filter)
12 {
13 ccLog::Error(QString("[Load] Internal error: no filter corresponds to filter '%1'").arg(fileFilter));
14 return CC_FERR_UNKNOWN_FILE;
15 }
16
17 return SaveToFile(entities, filename, parameters, filter);
18 }
19
20 CC_FILE_ERROR FileIOFilter::SaveToFile( ccHObject* entities,
21 const QString& filename,
22 SaveParameters& parameters,
23 Shared filter)
24 {
25 if (!entities || filename.isEmpty() || !filter)
26 return CC_FERR_BAD_ARGUMENT;
27
28 //if the file name has no extension, we had a default one!
29 QString completeFileName(filename);
30 if (QFileInfo(filename).suffix().isEmpty())
31 completeFileName += QString(".%1").arg(filter->getDefaultExtension());
32
33 CC_FILE_ERROR result = CC_FERR_NO_ERROR;
34 try
35 {
36 result = filter->saveToFile(entities, completeFileName, parameters);
37 }
38 catch(...)
39 {
40 ccLog::Warning(QString("[I/O] CC has caught an unhandled exception while saving file '%1'").arg(filename));
41 result = CC_FERR_CONSOLE_ERROR;
42 }
43
44 if (result == CC_FERR_NO_ERROR)
45 {
46 ccLog::Print(QString("[I/O] File '%1' saved successfully").arg(filename));
47 }
48 else
49 {
50 DisplayErrorMessage(result,"saving",filename);
51 }
52
53 return result;
54 }FileIOFilter::SaveToFile
获取需要的文件存储器。
1 //获取存取器
2 FileIOFilter::Shared FileIOFilter::GetFilter(QString fileFilter, bool onImport)
3 {
4 if (!fileFilter.isEmpty())
5 {
6 for (FilterContainer::const_iterator it=s_ioFilters.begin(); it!=s_ioFilters.end(); ++it)
7 {
8 QStringList otherFilters = (*it)->getFileFilters(onImport);
9 if (otherFilters.contains(fileFilter))
10 return *it;
11 }
12 }
13
14 return Shared(0);
15 }FileIOFilter::Shared FileIOFilter::GetFilter
这里重点研究一下obj文件的保存。
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