本文整理汇总了C++中OGRGeometry::importFromWkt方法的典型用法代码示例。如果您正苦于以下问题：C++ OGRGeometry::importFromWkt方法的具体用法？C++ OGRGeometry::importFromWkt怎么用？C++ OGRGeometry::importFromWkt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::importFromWkt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: createFromWkt
OGRErr OGRGeometryFactory::createFromWkt(char **ppszData,
OGRSpatialReference * poSR,
OGRGeometry **ppoReturn )
{
OGRErr eErr;
char szToken[OGR_WKT_TOKEN_MAX];
char *pszInput = *ppszData;
OGRGeometry *poGeom;
*ppoReturn = NULL;
/* -------------------------------------------------------------------- */
/* Get the first token, which should be the geometry type. */
/* -------------------------------------------------------------------- */
if( OGRWktReadToken( pszInput, szToken ) == NULL )
return OGRERR_CORRUPT_DATA;
/* -------------------------------------------------------------------- */
/* Instantiate a geometry of the appropriate type. */
/* -------------------------------------------------------------------- */
if( EQUAL(szToken,"POINT") )
{
poGeom = new OGRPoint();
}
else if( EQUAL(szToken,"LINESTRING") )
{
poGeom = new OGRLineString();
}
else if( EQUAL(szToken,"POLYGON") )
{
poGeom = new OGRPolygon();
}
else if( EQUAL(szToken,"GEOMETRYCOLLECTION") )
{
poGeom = new OGRGeometryCollection();
}
else if( EQUAL(szToken,"MULTIPOLYGON") )
{
poGeom = new OGRMultiPolygon();
}
else if( EQUAL(szToken,"MULTIPOINT") )
{
poGeom = new OGRMultiPoint();
}
else if( EQUAL(szToken,"MULTILINESTRING") )
{
poGeom = new OGRMultiLineString();
}
else
{
return OGRERR_UNSUPPORTED_GEOMETRY_TYPE;
}
/* -------------------------------------------------------------------- */
/* Do the import. */
/* -------------------------------------------------------------------- */
eErr = poGeom->importFromWkt( &pszInput );
/* -------------------------------------------------------------------- */
/* Assign spatial reference system. */
/* -------------------------------------------------------------------- */
if( eErr == OGRERR_NONE )
{
poGeom->assignSpatialReference( poSR );
*ppoReturn = poGeom;
*ppszData = pszInput;
}
else
{
delete poGeom;
}
return eErr;
}