A collection of non-overlapping OGRSurface. More...
#include <ogr_geometry.h>
Public Member Functions | |
OGRMultiSurface () | |
Create an empty multi surface collection. | |
virtual const char * | getGeometryName () const |
Fetch WKT name for geometry type. | |
virtual OGRwkbGeometryType | getGeometryType () const |
Fetch geometry type. | |
virtual OGRErr | importFromWkt (char **) |
Assign geometry from well known text data. | |
virtual OGRErr | exportToWkt (char **, OGRwkbVariant=wkbVariantOldOgc) const |
Convert a geometry into well known text format. | |
virtual OGRErr | PointOnSurface (OGRPoint *poPoint) const |
This method relates to the SFCOM IMultiSurface::get_PointOnSurface() method. | |
virtual int | getDimension () const |
Get the dimension of this object. | |
virtual OGRBoolean | hasCurveGeometry (int bLookForNonLinear=FALSE) const |
Static Public Member Functions | |
static OGRMultiPolygon * | CastToMultiPolygon (OGRMultiSurface *poMS) |
Cast to multipolygon. | |
Protected Member Functions | |
virtual OGRBoolean | isCompatibleSubType (OGRwkbGeometryType) const |
A collection of non-overlapping OGRSurface.
OGRMultiPolygon * OGRMultiSurface::CastToMultiPolygon | ( | OGRMultiSurface * | poMS | ) | [static] |
Cast to multipolygon.
This method should only be called if the multisurface actually only contains instances of OGRPolygon. This can be verified if hasCurveGeometry(TRUE) returns FALSE. It is not intended to approximate curve polygons. For that use getLinearGeometry().
The passed in geometry is consumed and a new one returned (or NULL in case of failure).
poMS | the input geometry - ownership is passed to the method. |
virtual OGRErr OGRMultiSurface::exportToWkt | ( | char ** | ppszDstText, | |
OGRwkbVariant | eWkbVariant = wkbVariantOldOgc | |||
) | const [virtual] |
Convert a geometry into well known text format.
This method relates to the SFCOM IWks::ExportToWKT() method.
This method is the same as the C function OGR_G_ExportToWkt().
ppszDstText | a text buffer is allocated by the program, and assigned to the passed pointer. After use, *ppszDstText should be freed with OGRFree(). | |
eWkbVariant | the specification that must be conformed too :
|
Reimplemented from OGRGeometryCollection.
Reimplemented in OGRMultiPolygon.
int OGRMultiSurface::getDimension | ( | ) | const [virtual] |
Get the dimension of this object.
This method corresponds to the SFCOM IGeometry::GetDimension() method. It indicates the dimension of the object, but does not indicate the dimension of the underlying space (as indicated by OGRGeometry::getCoordinateDimension()).
This method is the same as the C function OGR_G_GetDimension().
Reimplemented from OGRGeometryCollection.
const char * OGRMultiSurface::getGeometryName | ( | ) | const [virtual] |
Fetch WKT name for geometry type.
There is no SFCOM analog to this method.
This method is the same as the C function OGR_G_GetGeometryName().
Reimplemented from OGRGeometryCollection.
Reimplemented in OGRMultiPolygon.
OGRwkbGeometryType OGRMultiSurface::getGeometryType | ( | ) | const [virtual] |
Fetch geometry type.
Note that the geometry type may include the 2.5D flag. To get a 2D flattened version of the geometry type apply the wkbFlatten() macro to the return result.
This method is the same as the C function OGR_G_GetGeometryType().
Reimplemented from OGRGeometryCollection.
Reimplemented in OGRMultiPolygon.
OGRErr OGRMultiSurface::importFromWkt | ( | char ** | ppszInput | ) | [virtual] |
Assign geometry from well known text data.
The object must have already been instantiated as the correct derived type of geometry object to match the text type. This method is used by the OGRGeometryFactory class, but not normally called by application code.
This method relates to the SFCOM IWks::ImportFromWKT() method.
This method is the same as the C function OGR_G_ImportFromWkt().
ppszInput | pointer to a pointer to the source text. The pointer is updated to pointer after the consumed text. |
Reimplemented from OGRGeometryCollection.
OGRErr OGRMultiSurface::PointOnSurface | ( | OGRPoint * | poPoint | ) | const [virtual] |
This method relates to the SFCOM IMultiSurface::get_PointOnSurface() method.
NOTE: Only implemented when GEOS included in build.
poPoint | point to be set with an internal point. |
Reimplemented in OGRMultiPolygon.