本文整理汇总了C++中OGRDataSource::DestroyDataSource方法的典型用法代码示例。如果您正苦于以下问题：C++ OGRDataSource::DestroyDataSource方法的具体用法？C++ OGRDataSource::DestroyDataSource怎么用？C++ OGRDataSource::DestroyDataSource使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类OGRDataSource的用法示例。
在下文中一共展示了OGRDataSource::DestroyDataSource方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: OGRRegisterAll
bool ShpReader::Open(std::wstring fullPath, StudyControllerPtr studyController,
VectorMapControllerPtr vectorMapController, ProgressDlgPtr progressDlg)
{
// Registers all format drivers built into GDAL/OGR.
OGRRegisterAll();
OGRDataSource *OGRDataset;
// Open vector file path
std::string tempStr( fullPath.begin(), fullPath.end() );
OGRDataset = OGRSFDriverRegistrar::Open( tempStr.c_str(), FALSE );
// Return if no vector files are found
if( OGRDataset == NULL )
{
Log::Inst().Warning("(Warning) Failed to open file at " + tempStr + ".");
return false;
}
if ( App::Inst().GetLayerTreeController()->GetNumMapLayers() >0 )
MapControllerPtr mapController= App::Inst().GetLayerTreeController()->GetLayerTreeModel()->GetStudy(0)->GetMapLayer(0)->GetMapController();
// It appears that shapefiles (*.SHP) only support up to one layer per file
// This will need to be further investigated for other vector filetypes (e.g., KML)
// For now just grab layer at position 0
OGRLayer *poLayer = OGRDataset->GetLayer( 0 );
// Determine the XY boundaries for the entire vector dataset
OGREnvelope psEnvelope;
VectorMapModelPtr vectorMapModel = vectorMapController->GetVectorMapModel();
poLayer->GetExtent( &psEnvelope );
vectorMapModel->SetVectorBoundary(psEnvelope);
if(!SetupVectorProjection(OGRDataset,studyController,poLayer,vectorMapController ))
{
OGRDataset->DestroyDataSource(OGRDataset);
return false;
}
if(progressDlg)
{
if(!progressDlg->Update(0, _T("Reading Vector Map Information...")))
{
OGRDataset->DestroyDataSource(OGRDataset);
return false;
}
}
GLdouble minX, minY, maxX, maxY;
minX = minY = std::numeric_limits<float>::max();
maxX = maxY = -std::numeric_limits<float>::max();
// Retrieve features from the dataset
OGRFeature *poFeature;
poLayer->ResetReading();
int numFeatures = poLayer->GetFeatureCount();
int count=0;
//Log::Inst().Write("Loading shapefile with the following meta data:");
while ( ( poFeature = poLayer->GetNextFeature() ) != NULL )
{
/////////////////////////////////////////////////
// PHASE 1: Retrieve METADATA from the dataset //
/////////////////////////////////////////////////
OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn();
int iField;
for( iField = 0; iField < poFDefn->GetFieldCount(); iField++ )
{
OGRFieldDefn *poFieldDefn = poFDefn->GetFieldDefn( iField );
//if( poFieldDefn->GetType() == OFTInteger )
// printf( "%d,", poFeature->GetFieldAsInteger( iField ) );
//else if( poFieldDefn->GetType() == OFTReal )
// printf( "%.3f,", poFeature->GetFieldAsDouble(iField) );
//else if( poFieldDefn->GetType() == OFTString )
// printf( "%s,", poFeature->GetFieldAsString(iField) );
//else
// printf( "%s,", poFeature->GetFieldAsString(iField) );
//ofs << poFeature->GetFieldAsString(iField) << ",";
std::string metaData = poFeature->GetFieldAsString(iField);
// do something with the meta data...
//Log::Inst().Write(metaData);
}
count++;
if(progressDlg)
{
if(!progressDlg->Update(int(50 + (float(count)/numFeatures)*50)))
return false;
}
///////////////////////////////////////////////////
// PHASE 2: Retrieve GEOMETRIES from the dataset //
///////////////////////////////////////////////////
OGRGeometry *poGeometry;
poGeometry = poFeature->GetGeometryRef();
//.........这里部分代码省略.........