本文整理汇总了C++中OGRGeometry::toGeometryCollection方法的典型用法代码示例。如果您正苦于以下问题：C++ OGRGeometry::toGeometryCollection方法的具体用法？C++ OGRGeometry::toGeometryCollection怎么用？C++ OGRGeometry::toGeometryCollection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OGRGeometry的用法示例。
在下文中一共展示了OGRGeometry::toGeometryCollection方法的2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: importFromWkbInternal
OGRErr OGRGeometryCollection::importFromWkbInternal( const unsigned char * pabyData,
int nSize, int nRecLevel,
OGRwkbVariant eWkbVariant,
int& nBytesConsumedOut )
{
nBytesConsumedOut = -1;
// Arbitrary value, but certainly large enough for reasonable use cases.
if( nRecLevel == 32 )
{
CPLError( CE_Failure, CPLE_AppDefined,
"Too many recursion levels (%d) while parsing WKB geometry.",
nRecLevel );
return OGRERR_CORRUPT_DATA;
}
nGeomCount = 0;
OGRwkbByteOrder eByteOrder = wkbXDR;
int nDataOffset = 0;
OGRErr eErr = importPreambleOfCollectionFromWkb( pabyData,
nSize,
nDataOffset,
eByteOrder,
9,
nGeomCount,
eWkbVariant );
if( eErr != OGRERR_NONE )
return eErr;
// coverity[tainted_data]
papoGeoms = static_cast<OGRGeometry **>(
VSI_CALLOC_VERBOSE(sizeof(void*), nGeomCount));
if( nGeomCount != 0 && papoGeoms == nullptr )
{
nGeomCount = 0;
return OGRERR_NOT_ENOUGH_MEMORY;
}
/* -------------------------------------------------------------------- */
/* Get the Geoms. */
/* -------------------------------------------------------------------- */
for( int iGeom = 0; iGeom < nGeomCount; iGeom++ )
{
// Parses sub-geometry.
const unsigned char* pabySubData = pabyData + nDataOffset;
if( nSize < 9 && nSize != -1 )
return OGRERR_NOT_ENOUGH_DATA;
OGRwkbGeometryType eSubGeomType = wkbUnknown;
eErr = OGRReadWKBGeometryType( pabySubData, eWkbVariant,
&eSubGeomType );
if( eErr != OGRERR_NONE )
return eErr;
if( !isCompatibleSubType(eSubGeomType) )
{
nGeomCount = iGeom;
CPLDebug(
"OGR",
"Cannot add geometry of type (%d) to geometry of type (%d)",
eSubGeomType, getGeometryType());
return OGRERR_CORRUPT_DATA;
}
OGRGeometry* poSubGeom = nullptr;
int nSubGeomBytesConsumed = -1;
if( OGR_GT_IsSubClassOf(eSubGeomType, wkbGeometryCollection) )
{
poSubGeom = OGRGeometryFactory::createGeometry( eSubGeomType );
if( poSubGeom == nullptr )
eErr = OGRERR_FAILURE;
else
eErr = poSubGeom->toGeometryCollection()->
importFromWkbInternal( pabySubData, nSize,
nRecLevel + 1, eWkbVariant,
nSubGeomBytesConsumed );
}
else
{
eErr = OGRGeometryFactory::
createFromWkb( pabySubData, nullptr,
&poSubGeom, nSize, eWkbVariant,
nSubGeomBytesConsumed );
}
if( eErr != OGRERR_NONE )
{
nGeomCount = iGeom;
delete poSubGeom;
return eErr;
}
papoGeoms[iGeom] = poSubGeom;
if( papoGeoms[iGeom]->Is3D() )
flags |= OGR_G_3D;
if( papoGeoms[iGeom]->IsMeasured() )
flags |= OGR_G_MEASURED;
//.........这里部分代码省略.........
示例2: CreateTABFeature
TABFeature* IMapInfoFile::CreateTABFeature(OGRFeature *poFeature)
{
TABFeature *poTABFeature = nullptr;
OGRwkbGeometryType eGType;
TABPoint *poTABPointFeature = nullptr;
TABRegion *poTABRegionFeature = nullptr;
TABPolyline *poTABPolylineFeature = nullptr;
/*-----------------------------------------------------------------
* MITAB won't accept new features unless they are in a type derived
* from TABFeature... so we have to do our best to map to the right
* feature type based on the geometry type.
*----------------------------------------------------------------*/
OGRGeometry* poGeom = poFeature->GetGeometryRef();
if( poGeom != nullptr )
eGType = poGeom->getGeometryType();
else
eGType = wkbNone;
switch( wkbFlatten(eGType) )
{
/*-------------------------------------------------------------
* POINT
*------------------------------------------------------------*/
case wkbPoint:
poTABFeature = new TABPoint(poFeature->GetDefnRef());
if(poFeature->GetStyleString())
{
poTABPointFeature = cpl::down_cast<TABPoint*>(poTABFeature);
poTABPointFeature->SetSymbolFromStyleString(
poFeature->GetStyleString());
}
break;
/*-------------------------------------------------------------
* REGION
*------------------------------------------------------------*/
case wkbPolygon:
case wkbMultiPolygon:
poTABFeature = new TABRegion(poFeature->GetDefnRef());
if(poFeature->GetStyleString())
{
poTABRegionFeature = cpl::down_cast<TABRegion*>(poTABFeature);
poTABRegionFeature->SetPenFromStyleString(
poFeature->GetStyleString());
poTABRegionFeature->SetBrushFromStyleString(
poFeature->GetStyleString());
}
break;
/*-------------------------------------------------------------
* LINE/PLINE/MULTIPLINE
*------------------------------------------------------------*/
case wkbLineString:
case wkbMultiLineString:
poTABFeature = new TABPolyline(poFeature->GetDefnRef());
if(poFeature->GetStyleString())
{
poTABPolylineFeature = cpl::down_cast<TABPolyline*>(poTABFeature);
poTABPolylineFeature->SetPenFromStyleString(
poFeature->GetStyleString());
}
break;
/*-------------------------------------------------------------
* Collection types that are not directly supported... convert
* to multiple features in output file through recursive calls.
*------------------------------------------------------------*/
case wkbGeometryCollection:
case wkbMultiPoint:
{
OGRErr eStatus = OGRERR_NONE;
assert(poGeom); // for clang static analyzer
OGRGeometryCollection *poColl = poGeom->toGeometryCollection();
OGRFeature *poTmpFeature = poFeature->Clone();
for( int i = 0;
eStatus==OGRERR_NONE && poColl != nullptr &&
i<poColl->getNumGeometries();
i++)
{
poTmpFeature->SetFID(OGRNullFID);
poTmpFeature->SetGeometry(poColl->getGeometryRef(i));
eStatus = ICreateFeature(poTmpFeature);
}
delete poTmpFeature;
return nullptr;
}
break;
/*-------------------------------------------------------------
* Unsupported type.... convert to MapInfo geometry NONE
*------------------------------------------------------------*/
case wkbUnknown:
default:
poTABFeature = new TABFeature(poFeature->GetDefnRef());
break;
}
if( poGeom != nullptr )
poTABFeature->SetGeometryDirectly(poGeom->clone());
for (int i=0; i< poFeature->GetDefnRef()->GetFieldCount();i++)
//.........这里部分代码省略.........