openkylin
/
gdal
mirror of https://gitee.com/openkylin/gdal.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
gdal/ogr/gml2ogrgeometry.cpp

3814 lines
149 KiB
C++
Raw Blame History

/******************************************************************************
*
* Project: GML Reader
* Purpose: Code to translate between GML and OGR geometry forms.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2002, Frank Warmerdam
* Copyright (c) 2009-2014, Even Rouault <even dot rouault at spatialys.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************
*
* Independent Security Audit 2003/04/17 Andrey Kiselev:
* Completed audit of this module. All functions may be used without buffer
* overflows and stack corruptions with any kind of input data.
*
* Security Audit 2003/03/28 warmerda:
* Completed security audit. I believe that this module may be safely used
* to parse, arbitrary GML potentially provided by a hostile source without
* compromising the system.
*
*/
#include "cpl_port.h"
#include "ogr_api.h"
#include <algorithm>
#include <cassert>
#include <cctype>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include "cpl_conv.h"
#include "cpl_error.h"
#include "cpl_minixml.h"
#include "cpl_string.h"
#include "ogr_core.h"
#include "ogr_geometry.h"
#include "ogr_p.h"
#include "ogr_spatialref.h"
#include "ogr_srs_api.h"
#include "ogr_geo_utils.h"
constexpr double kdfD2R = M_PI / 180.0;
constexpr double kdf2PI = 2.0 * M_PI;
/************************************************************************/
/* GMLGetCoordTokenPos() */
/************************************************************************/
static const char *GMLGetCoordTokenPos(const char *pszStr,
const char **ppszNextToken)
{
char ch;
while (true)
{
// cppcheck-suppress nullPointerRedundantCheck
ch = *pszStr;
if (ch == '\0')
{
*ppszNextToken = pszStr;
return nullptr;
}
else if (!(ch == '\n' || ch == '\r' || ch == '\t' || ch == ' ' ||
ch == ','))
break;
pszStr++;
}
const char *pszToken = pszStr;
while ((ch = *pszStr) != '\0')
{
if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' ' || ch == ',')
{
*ppszNextToken = pszStr;
return pszToken;
}
pszStr++;
}
*ppszNextToken = pszStr;
return pszToken;
}
/************************************************************************/
/* BareGMLElement() */
/* */
/* Returns the passed string with any namespace prefix */
/* stripped off. */
/************************************************************************/
static const char *BareGMLElement(const char *pszInput)
{
const char *pszReturn = strchr(pszInput, ':');
if (pszReturn == nullptr)
pszReturn = pszInput;
else
pszReturn++;
return pszReturn;
}
/************************************************************************/
/* FindBareXMLChild() */
/* */
/* Find a child node with the indicated "bare" name, that is */
/* after any namespace qualifiers have been stripped off. */
/************************************************************************/
static const CPLXMLNode *FindBareXMLChild(const CPLXMLNode *psParent,
const char *pszBareName)
{
const CPLXMLNode *psCandidate = psParent->psChild;
while (psCandidate != nullptr)
{
if (psCandidate->eType == CXT_Element &&
EQUAL(BareGMLElement(psCandidate->pszValue), pszBareName))
return psCandidate;
psCandidate = psCandidate->psNext;
}
return nullptr;
}
/************************************************************************/
/* GetElementText() */
/************************************************************************/
static const char *GetElementText(const CPLXMLNode *psElement)
{
if (psElement == nullptr)
return nullptr;
const CPLXMLNode *psChild = psElement->psChild;
while (psChild != nullptr)
{
if (psChild->eType == CXT_Text)
return psChild->pszValue;
psChild = psChild->psNext;
}
return nullptr;
}
/************************************************************************/
/* GetChildElement() */
/************************************************************************/
static const CPLXMLNode *GetChildElement(const CPLXMLNode *psElement)
{
if (psElement == nullptr)
return nullptr;
const CPLXMLNode *psChild = psElement->psChild;
while (psChild != nullptr)
{
if (psChild->eType == CXT_Element)
return psChild;
psChild = psChild->psNext;
}
return nullptr;
}
/************************************************************************/
/* GetElementOrientation() */
/* Returns true for positive orientation. */
/************************************************************************/
static bool GetElementOrientation(const CPLXMLNode *psElement)
{
if (psElement == nullptr)
return true;
const CPLXMLNode *psChild = psElement->psChild;
while (psChild != nullptr)
{
if (psChild->eType == CXT_Attribute &&
EQUAL(psChild->pszValue, "orientation"))
return EQUAL(psChild->psChild->pszValue, "+");
psChild = psChild->psNext;
}
return true;
}
/************************************************************************/
/* AddPoint() */
/* */
/* Add a point to the passed geometry. */
/************************************************************************/
static bool AddPoint(OGRGeometry *poGeometry, double dfX, double dfY,
double dfZ, int nDimension)
{
const OGRwkbGeometryType eType = wkbFlatten(poGeometry->getGeometryType());
if (eType == wkbPoint)
{
OGRPoint *poPoint = poGeometry->toPoint();
if (!poPoint->IsEmpty())
{
CPLError(CE_Failure, CPLE_AppDefined,
"More than one coordinate for <Point> element.");
return false;
}
poPoint->setX(dfX);
poPoint->setY(dfY);
if (nDimension == 3)
poPoint->setZ(dfZ);
return true;
}
else if (eType == wkbLineString || eType == wkbCircularString)
{
OGRSimpleCurve *poCurve = poGeometry->toSimpleCurve();
if (nDimension == 3)
poCurve->addPoint(dfX, dfY, dfZ);
else
poCurve->addPoint(dfX, dfY);
return true;
}
CPLAssert(false);
return false;
}
/************************************************************************/
/* ParseGMLCoordinates() */
/************************************************************************/
static bool ParseGMLCoordinates(const CPLXMLNode *psGeomNode,
OGRGeometry *poGeometry, int nSRSDimension)
{
const CPLXMLNode *psCoordinates =
FindBareXMLChild(psGeomNode, "coordinates");
/* -------------------------------------------------------------------- */
/* Handle <coordinates> case. */
/* Note that we don't do a strict validation, so we accept and */
/* sometimes generate output whereas we should just reject it. */
/* -------------------------------------------------------------------- */
if (psCoordinates != nullptr)
{
const char *pszCoordString = GetElementText(psCoordinates);
const char *pszDecimal =
CPLGetXMLValue(psCoordinates, "decimal", nullptr);
char chDecimal = '.';
if (pszDecimal != nullptr)
{
if (strlen(pszDecimal) != 1 ||
(pszDecimal[0] >= '0' && pszDecimal[0] <= '9'))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong value for decimal attribute");
return false;
}
chDecimal = pszDecimal[0];
}
const char *pszCS = CPLGetXMLValue(psCoordinates, "cs", nullptr);
char chCS = ',';
if (pszCS != nullptr)
{
if (strlen(pszCS) != 1 || (pszCS[0] >= '0' && pszCS[0] <= '9'))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong value for cs attribute");
return false;
}
chCS = pszCS[0];
}
const char *pszTS = CPLGetXMLValue(psCoordinates, "ts", nullptr);
char chTS = ' ';
if (pszTS != nullptr)
{
if (strlen(pszTS) != 1 || (pszTS[0] >= '0' && pszTS[0] <= '9'))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong value for ts attribute");
return false;
}
chTS = pszTS[0];
}
if (pszCoordString == nullptr)
{
poGeometry->empty();
return true;
}
// Skip leading whitespace. See
// https://github.com/OSGeo/gdal/issues/5494
while (*pszCoordString != '\0' &&
isspace(static_cast<unsigned char>(*pszCoordString)))
{
pszCoordString++;
}
int iCoord = 0;
const OGRwkbGeometryType eType =
wkbFlatten(poGeometry->getGeometryType());
OGRSimpleCurve *poCurve =
(eType == wkbLineString || eType == wkbCircularString)
? poGeometry->toSimpleCurve()
: nullptr;
for (int iter = (eType == wkbPoint ? 1 : 0); iter < 2; iter++)
{
const char *pszStr = pszCoordString;
double dfX = 0;
double dfY = 0;
iCoord = 0;
while (*pszStr != '\0')
{
int nDimension = 2;
// parse out 2 or 3 tuple.
if (iter == 1)
{
if (chDecimal == '.')
dfX = OGRFastAtof(pszStr);
else
dfX = CPLAtofDelim(pszStr, chDecimal);
}
while (*pszStr != '\0' && *pszStr != chCS &&
!isspace(static_cast<unsigned char>(*pszStr)))
pszStr++;
if (*pszStr == '\0')
{
CPLError(CE_Failure, CPLE_AppDefined,
"Corrupt <coordinates> value.");
return false;
}
else if (chCS == ',' && pszCS == nullptr &&
isspace(static_cast<unsigned char>(*pszStr)))
{
// In theory, the coordinates inside a coordinate tuple
// should be separated by a comma. However it has been found
// in the wild that the coordinates are in rare cases
// separated by a space, and the tuples by a comma. See:
// https://52north.org/twiki/bin/view/Processing/WPS-IDWExtension-ObservationCollectionExample
// or
// http://agisdemo.faa.gov/aixmServices/getAllFeaturesByLocatorId?locatorId=DFW
chCS = ' ';
chTS = ',';
}
pszStr++;
if (iter == 1)
{
if (chDecimal == '.')
dfY = OGRFastAtof(pszStr);
else
dfY = CPLAtofDelim(pszStr, chDecimal);
}
while (*pszStr != '\0' && *pszStr != chCS && *pszStr != chTS &&
!isspace(static_cast<unsigned char>(*pszStr)))
pszStr++;
double dfZ = 0.0;
if (*pszStr == chCS)
{
pszStr++;
if (iter == 1)
{
if (chDecimal == '.')
dfZ = OGRFastAtof(pszStr);
else
dfZ = CPLAtofDelim(pszStr, chDecimal);
}
nDimension = 3;
while (*pszStr != '\0' && *pszStr != chCS &&
*pszStr != chTS &&
!isspace(static_cast<unsigned char>(*pszStr)))
pszStr++;
}
if (*pszStr == chTS)
{
pszStr++;
}
while (isspace(static_cast<unsigned char>(*pszStr)))
pszStr++;
if (iter == 1)
{
if (poCurve)
{
if (nDimension == 3)
poCurve->setPoint(iCoord, dfX, dfY, dfZ);
else
poCurve->setPoint(iCoord, dfX, dfY);
}
else if (!AddPoint(poGeometry, dfX, dfY, dfZ, nDimension))
return false;
}
iCoord++;
}
if (poCurve && iter == 0)
{
poCurve->setNumPoints(iCoord);
}
}
return iCoord > 0;
}
/* -------------------------------------------------------------------- */
/* Is this a "pos"? GML 3 construct. */
/* Parse if it exist a series of pos elements (this would allow */
/* the correct parsing of gml3.1.1 geometries such as linestring */
/* defined with pos elements. */
/* -------------------------------------------------------------------- */
bool bHasFoundPosElement = false;
for (const CPLXMLNode *psPos = psGeomNode->psChild; psPos != nullptr;
psPos = psPos->psNext)
{
if (psPos->eType != CXT_Element)
continue;
const char *pszSubElement = BareGMLElement(psPos->pszValue);
if (EQUAL(pszSubElement, "pointProperty"))
{
for (const CPLXMLNode *psPointPropertyIter = psPos->psChild;
psPointPropertyIter != nullptr;
psPointPropertyIter = psPointPropertyIter->psNext)
{
if (psPointPropertyIter->eType != CXT_Element)
continue;
const char *pszBareElement =
BareGMLElement(psPointPropertyIter->pszValue);
if (EQUAL(pszBareElement, "Point") ||
EQUAL(pszBareElement, "ElevatedPoint"))
{
OGRPoint oPoint;
if (ParseGMLCoordinates(psPointPropertyIter, &oPoint,
nSRSDimension))
{
const bool bSuccess = AddPoint(
poGeometry, oPoint.getX(), oPoint.getY(),
oPoint.getZ(), oPoint.getCoordinateDimension());
if (bSuccess)
bHasFoundPosElement = true;
else
return false;
}
}
}
if (psPos->psChild && psPos->psChild->eType == CXT_Attribute &&
psPos->psChild->psNext == nullptr &&
strcmp(psPos->psChild->pszValue, "xlink:href") == 0)
{
CPLError(CE_Warning, CPLE_AppDefined,
"Cannot resolve xlink:href='%s'. "
"Try setting GML_SKIP_RESOLVE_ELEMS=NONE",
psPos->psChild->psChild->pszValue);
}
continue;
}
if (!EQUAL(pszSubElement, "pos"))
continue;
const char *pszPos = GetElementText(psPos);
if (pszPos == nullptr)
{
poGeometry->empty();
return true;
}
const char *pszCur = pszPos;
const char *pszX = GMLGetCoordTokenPos(pszCur, &pszCur);
const char *pszY = (pszCur[0] != '\0')
? GMLGetCoordTokenPos(pszCur, &pszCur)
: nullptr;
const char *pszZ = (pszCur[0] != '\0')
? GMLGetCoordTokenPos(pszCur, &pszCur)
: nullptr;
if (pszY == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Did not get 2+ values in <gml:pos>%s</gml:pos> tuple.",
pszPos);
return false;
}
const double dfX = OGRFastAtof(pszX);
const double dfY = OGRFastAtof(pszY);
const double dfZ = (pszZ != nullptr) ? OGRFastAtof(pszZ) : 0.0;
const bool bSuccess =
AddPoint(poGeometry, dfX, dfY, dfZ, (pszZ != nullptr) ? 3 : 2);
if (bSuccess)
bHasFoundPosElement = true;
else
return false;
}
if (bHasFoundPosElement)
return true;
/* -------------------------------------------------------------------- */
/* Is this a "posList"? GML 3 construct (SF profile). */
/* -------------------------------------------------------------------- */
const CPLXMLNode *psPosList = FindBareXMLChild(psGeomNode, "posList");
if (psPosList != nullptr)
{
int nDimension = 2;
// Try to detect the presence of an srsDimension attribute
// This attribute is only available for gml3.1.1 but not
// available for gml3.1 SF.
const char *pszSRSDimension =
CPLGetXMLValue(psPosList, "srsDimension", nullptr);
// If not found at the posList level, try on the enclosing element.
if (pszSRSDimension == nullptr)
pszSRSDimension =
CPLGetXMLValue(psGeomNode, "srsDimension", nullptr);
if (pszSRSDimension != nullptr)
nDimension = atoi(pszSRSDimension);
else if (nSRSDimension != 0)
// Or use one coming from a still higher level element (#5606).
nDimension = nSRSDimension;
if (nDimension != 2 && nDimension != 3)
{
CPLError(CE_Failure, CPLE_AppDefined,
"srsDimension = %d not supported", nDimension);
return false;
}
const char *pszPosList = GetElementText(psPosList);
if (pszPosList == nullptr)
{
poGeometry->empty();
return true;
}
bool bSuccess = false;
const char *pszCur = pszPosList;
while (true)
{
const char *pszX = GMLGetCoordTokenPos(pszCur, &pszCur);
if (pszX == nullptr && bSuccess)
break;
const char *pszY = (pszCur[0] != '\0')
? GMLGetCoordTokenPos(pszCur, &pszCur)
: nullptr;
const char *pszZ = (nDimension == 3 && pszCur[0] != '\0')
? GMLGetCoordTokenPos(pszCur, &pszCur)
: nullptr;
if (pszY == nullptr || (nDimension == 3 && pszZ == nullptr))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Did not get at least %d values or invalid number of "
"set of coordinates <gml:posList>%s</gml:posList>",
nDimension, pszPosList);
return false;
}
double dfX = OGRFastAtof(pszX);
double dfY = OGRFastAtof(pszY);
double dfZ = (pszZ != nullptr) ? OGRFastAtof(pszZ) : 0.0;
bSuccess = AddPoint(poGeometry, dfX, dfY, dfZ, nDimension);
if (!bSuccess || pszCur == nullptr)
break;
}
return bSuccess;
}
/* -------------------------------------------------------------------- */
/* Handle form with a list of <coord> items each with an <X>, */
/* and <Y> element. */
/* -------------------------------------------------------------------- */
int iCoord = 0;
for (const CPLXMLNode *psCoordNode = psGeomNode->psChild;
psCoordNode != nullptr; psCoordNode = psCoordNode->psNext)
{
if (psCoordNode->eType != CXT_Element ||
!EQUAL(BareGMLElement(psCoordNode->pszValue), "coord"))
continue;
const CPLXMLNode *psXNode = FindBareXMLChild(psCoordNode, "X");
const CPLXMLNode *psYNode = FindBareXMLChild(psCoordNode, "Y");
const CPLXMLNode *psZNode = FindBareXMLChild(psCoordNode, "Z");
if (psXNode == nullptr || psYNode == nullptr ||
GetElementText(psXNode) == nullptr ||
GetElementText(psYNode) == nullptr ||
(psZNode != nullptr && GetElementText(psZNode) == nullptr))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Corrupt <coord> element, missing <X> or <Y> element?");
return false;
}
double dfX = OGRFastAtof(GetElementText(psXNode));
double dfY = OGRFastAtof(GetElementText(psYNode));
int nDimension = 2;
double dfZ = 0.0;
if (psZNode != nullptr && GetElementText(psZNode) != nullptr)
{
dfZ = OGRFastAtof(GetElementText(psZNode));
nDimension = 3;
}
if (!AddPoint(poGeometry, dfX, dfY, dfZ, nDimension))
return false;
iCoord++;
}
return iCoord > 0;
}
#ifdef HAVE_GEOS
/************************************************************************/
/* GML2FaceExtRing() */
/* */
/* Identifies the "good" Polygon within the collection returned */
/* by GEOSPolygonize() */
/* short rationale: GEOSPolygonize() will possibly return a */
/* collection of many Polygons; only one is the "good" one, */
/* (including both exterior- and interior-rings) */
/* any other simply represents a single "hole", and should be */
/* consequently ignored at all. */
/************************************************************************/
static std::unique_ptr<OGRPolygon> GML2FaceExtRing(const OGRGeometry *poGeom)
{
const OGRGeometryCollection *poColl =
dynamic_cast<const OGRGeometryCollection *>(poGeom);
if (poColl == nullptr)
{
CPLError(CE_Fatal, CPLE_AppDefined,
"dynamic_cast failed. Expected OGRGeometryCollection.");
return nullptr;
}
const OGRPolygon *poPolygonExterior = nullptr;
const OGRPolygon *poPolygonInterior = nullptr;
int iExterior = 0;
int iInterior = 0;
for (const auto *poChild : *poColl)
{
// A collection of Polygons is expected to be found.
if (wkbFlatten(poChild->getGeometryType()) == wkbPolygon)
{
const OGRPolygon *poPoly = poChild->toPolygon();
if (poPoly->getNumInteriorRings() > 0)
{
poPolygonExterior = poPoly;
iExterior++;
}
else
{
poPolygonInterior = poPoly;
iInterior++;
}
}
else
{
return nullptr;
}
}
if (poPolygonInterior && iExterior == 0 && iInterior == 1)
{
// There is a single Polygon within the collection.
return std::unique_ptr<OGRPolygon>(poPolygonInterior->clone());
}
else if (poPolygonExterior && iExterior == 1 &&
iInterior == poColl->getNumGeometries() - 1)
{
// Return the unique Polygon containing holes.
return std::unique_ptr<OGRPolygon>(poPolygonExterior->clone());
}
return nullptr;
}
#endif
/************************************************************************/
/* GML2OGRGeometry_AddToCompositeCurve() */
/************************************************************************/
static bool
GML2OGRGeometry_AddToCompositeCurve(OGRCompoundCurve *poCC,
std::unique_ptr<OGRGeometry> poGeom,
bool &bChildrenAreAllLineString)
{
if (poGeom == nullptr || !OGR_GT_IsCurve(poGeom->getGeometryType()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"CompositeCurve: Got %.500s geometry as Member instead of a "
"curve.",
poGeom ? poGeom->getGeometryName() : "NULL");
return false;
}
// Crazy but allowed by GML: composite in composite.
if (wkbFlatten(poGeom->getGeometryType()) == wkbCompoundCurve)
{
auto poCCChild = std::unique_ptr<OGRCompoundCurve>(
poGeom.release()->toCompoundCurve());
while (poCCChild->getNumCurves() != 0)
{
auto poCurve = std::unique_ptr<OGRCurve>(poCCChild->stealCurve(0));
if (wkbFlatten(poCurve->getGeometryType()) != wkbLineString)
bChildrenAreAllLineString = false;
if (poCC->addCurve(std::move(poCurve)) != OGRERR_NONE)
{
return false;
}
}
}
else
{
if (wkbFlatten(poGeom->getGeometryType()) != wkbLineString)
bChildrenAreAllLineString = false;
auto poCurve = std::unique_ptr<OGRCurve>(poGeom.release()->toCurve());
if (poCC->addCurve(std::move(poCurve)) != OGRERR_NONE)
{
return false;
}
}
return true;
}
/************************************************************************/
/* GML2OGRGeometry_AddToMultiSurface() */
/************************************************************************/
static bool GML2OGRGeometry_AddToMultiSurface(
OGRMultiSurface *poMS, std::unique_ptr<OGRGeometry> poGeom,
const char *pszMemberElement, bool &bChildrenAreAllPolygons)
{
if (poGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "Invalid %s", pszMemberElement);
return false;
}
OGRwkbGeometryType eType = wkbFlatten(poGeom->getGeometryType());
if (eType == wkbPolygon || eType == wkbCurvePolygon)
{
if (eType != wkbPolygon)
bChildrenAreAllPolygons = false;
if (poMS->addGeometry(std::move(poGeom)) != OGRERR_NONE)
{
return false;
}
}
else if (eType == wkbMultiPolygon || eType == wkbMultiSurface)
{
OGRMultiSurface *poMS2 = poGeom->toMultiSurface();
for (int i = 0; i < poMS2->getNumGeometries(); i++)
{
if (wkbFlatten(poMS2->getGeometryRef(i)->getGeometryType()) !=
wkbPolygon)
bChildrenAreAllPolygons = false;
if (poMS->addGeometry(poMS2->getGeometryRef(i)) != OGRERR_NONE)
{
return false;
}
}
}
else
{
CPLError(CE_Failure, CPLE_AppDefined, "Got %.500s geometry as %s.",
poGeom->getGeometryName(), pszMemberElement);
return false;
}
return true;
}
/************************************************************************/
/* GetDistanceInMetre() */
/************************************************************************/
static double GetDistanceInMetre(double dfDistance, const char *pszUnits)
{
if (EQUAL(pszUnits, "m"))
return dfDistance;
if (EQUAL(pszUnits, "km"))
return dfDistance * 1000;
if (EQUAL(pszUnits, "nm") || EQUAL(pszUnits, "[nmi_i]"))
return dfDistance * CPLAtof(SRS_UL_INTL_NAUT_MILE_CONV);
if (EQUAL(pszUnits, "mi"))
return dfDistance * CPLAtof(SRS_UL_INTL_STAT_MILE_CONV);
if (EQUAL(pszUnits, "ft"))
return dfDistance * CPLAtof(SRS_UL_INTL_FOOT_CONV);
CPLDebug("GML2OGRGeometry", "Unhandled unit: %s", pszUnits);
return -1;
}
/************************************************************************/
/* GML2OGRGeometry_XMLNode() */
/* */
/* Translates the passed XMLnode and its children into an */
/* OGRGeometry. This is used recursively for geometry */
/* collections. */
/************************************************************************/
static std::unique_ptr<OGRGeometry> GML2OGRGeometry_XMLNode_Internal(
const CPLXMLNode *psNode, int nPseudoBoolGetSecondaryGeometryOption,
int nRecLevel, int nSRSDimension, const char *pszSRSName,
bool bIgnoreGSG = false, bool bOrientation = true,
bool bFaceHoleNegative = false);
OGRGeometry *GML2OGRGeometry_XMLNode(const CPLXMLNode *psNode,
int nPseudoBoolGetSecondaryGeometryOption,
int nRecLevel, int nSRSDimension,
bool bIgnoreGSG, bool bOrientation,
bool bFaceHoleNegative)
{
return GML2OGRGeometry_XMLNode_Internal(
psNode, nPseudoBoolGetSecondaryGeometryOption, nRecLevel,
nSRSDimension, nullptr, bIgnoreGSG, bOrientation,
bFaceHoleNegative)
.release();
}
static std::unique_ptr<OGRGeometry> GML2OGRGeometry_XMLNode_Internal(
const CPLXMLNode *psNode, int nPseudoBoolGetSecondaryGeometryOption,
int nRecLevel, int nSRSDimension, const char *pszSRSName, bool bIgnoreGSG,
bool bOrientation, bool bFaceHoleNegative)
{
// constexpr bool bCastToLinearTypeIfPossible = true; // Hard-coded for
// now.
// We need this nRecLevel == 0 check, otherwise this could result in
// multiple revist of the same node, and exponential complexity.
if (nRecLevel == 0 && psNode != nullptr &&
strcmp(psNode->pszValue, "?xml") == 0)
psNode = psNode->psNext;
while (psNode != nullptr && psNode->eType == CXT_Comment)
psNode = psNode->psNext;
if (psNode == nullptr)
return nullptr;
const char *pszSRSDimension =
CPLGetXMLValue(psNode, "srsDimension", nullptr);
if (pszSRSDimension != nullptr)
nSRSDimension = atoi(pszSRSDimension);
if (pszSRSName == nullptr)
pszSRSName = CPLGetXMLValue(psNode, "srsName", nullptr);
const char *pszBaseGeometry = BareGMLElement(psNode->pszValue);
if (nPseudoBoolGetSecondaryGeometryOption < 0)
nPseudoBoolGetSecondaryGeometryOption =
CPLTestBool(CPLGetConfigOption("GML_GET_SECONDARY_GEOM", "NO"));
bool bGetSecondaryGeometry =
bIgnoreGSG ? false : CPL_TO_BOOL(nPseudoBoolGetSecondaryGeometryOption);
// Arbitrary value, but certainly large enough for reasonable usages.
if (nRecLevel == 32)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Too many recursion levels (%d) while parsing GML geometry.",
nRecLevel);
return nullptr;
}
if (bGetSecondaryGeometry)
if (!(EQUAL(pszBaseGeometry, "directedEdge") ||
EQUAL(pszBaseGeometry, "TopoCurve")))
return nullptr;
/* -------------------------------------------------------------------- */
/* Polygon / PolygonPatch / Rectangle */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Polygon") ||
EQUAL(pszBaseGeometry, "PolygonPatch") ||
EQUAL(pszBaseGeometry, "Rectangle"))
{
// Find outer ring.
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "outerBoundaryIs");
if (psChild == nullptr)
psChild = FindBareXMLChild(psNode, "exterior");
psChild = GetChildElement(psChild);
if (psChild == nullptr)
{
// <gml:Polygon/> is invalid GML2, but valid GML3, so be tolerant.
return cpl::make_unique<OGRPolygon>();
}
// Translate outer ring and add to polygon.
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "Invalid exterior ring");
return nullptr;
}
if (!OGR_GT_IsCurve(poGeom->getGeometryType()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"%s: Got %.500s geometry as outerBoundaryIs.",
pszBaseGeometry, poGeom->getGeometryName());
return nullptr;
}
if (wkbFlatten(poGeom->getGeometryType()) == wkbLineString &&
!EQUAL(poGeom->getGeometryName(), "LINEARRING"))
{
OGRCurve *poCurve = poGeom.release()->toCurve();
auto poLinearRing = OGRCurve::CastToLinearRing(poCurve);
if (!poLinearRing)
return nullptr;
poGeom.reset(poLinearRing);
}
std::unique_ptr<OGRCurvePolygon> poCP;
bool bIsPolygon = false;
assert(poGeom); // to please cppcheck
if (EQUAL(poGeom->getGeometryName(), "LINEARRING"))
{
poCP = cpl::make_unique<OGRPolygon>();
bIsPolygon = true;
}
else
{
poCP = cpl::make_unique<OGRCurvePolygon>();
bIsPolygon = false;
}
{
auto poCurve =
std::unique_ptr<OGRCurve>(poGeom.release()->toCurve());
if (poCP->addRing(std::move(poCurve)) != OGRERR_NONE)
{
return nullptr;
}
}
// Find all inner rings
for (psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
(EQUAL(BareGMLElement(psChild->pszValue), "innerBoundaryIs") ||
EQUAL(BareGMLElement(psChild->pszValue), "interior")))
{
const CPLXMLNode *psInteriorChild = GetChildElement(psChild);
std::unique_ptr<OGRGeometry> poGeomInterior;
if (psInteriorChild != nullptr)
poGeomInterior = GML2OGRGeometry_XMLNode_Internal(
psInteriorChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeomInterior == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid interior ring");
return nullptr;
}
if (!OGR_GT_IsCurve(poGeomInterior->getGeometryType()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"%s: Got %.500s geometry as innerBoundaryIs.",
pszBaseGeometry,
poGeomInterior->getGeometryName());
return nullptr;
}
if (bIsPolygon)
{
if (!EQUAL(poGeomInterior->getGeometryName(), "LINEARRING"))
{
if (wkbFlatten(poGeomInterior->getGeometryType()) ==
wkbLineString)
{
OGRLineString *poLS =
poGeomInterior.release()->toLineString();
auto poLinearRing =
OGRCurve::CastToLinearRing(poLS);
if (!poLinearRing)
return nullptr;
poGeomInterior.reset(poLinearRing);
}
else
{
// Might fail if some rings are not closed.
// We used to be tolerant about that with Polygon.
// but we have become stricter with CurvePolygon.
auto poCPNew = std::unique_ptr<OGRCurvePolygon>(
OGRSurface::CastToCurvePolygon(poCP.release()));
if (!poCPNew)
{
return nullptr;
}
poCP = std::move(poCPNew);
bIsPolygon = false;
}
}
}
else
{
if (EQUAL(poGeomInterior->getGeometryName(), "LINEARRING"))
{
OGRCurve *poCurve = poGeomInterior.release()->toCurve();
poGeomInterior.reset(
OGRCurve::CastToLineString(poCurve));
}
}
auto poCurve = std::unique_ptr<OGRCurve>(
poGeomInterior.release()->toCurve());
if (poCP->addRing(std::move(poCurve)) != OGRERR_NONE)
{
return nullptr;
}
}
}
return poCP;
}
/* -------------------------------------------------------------------- */
/* Triangle */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Triangle"))
{
// Find outer ring.
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "exterior");
if (!psChild)
return nullptr;
psChild = GetChildElement(psChild);
if (psChild == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "Empty Triangle");
return cpl::make_unique<OGRTriangle>();
}
// Translate outer ring and add to Triangle.
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "Invalid exterior ring");
return nullptr;
}
if (!OGR_GT_IsCurve(poGeom->getGeometryType()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"%s: Got %.500s geometry as outerBoundaryIs.",
pszBaseGeometry, poGeom->getGeometryName());
return nullptr;
}
if (wkbFlatten(poGeom->getGeometryType()) == wkbLineString &&
!EQUAL(poGeom->getGeometryName(), "LINEARRING"))
{
poGeom.reset(
OGRCurve::CastToLinearRing(poGeom.release()->toCurve()));
}
if (poGeom == nullptr ||
!EQUAL(poGeom->getGeometryName(), "LINEARRING"))
{
return nullptr;
}
auto poTriangle = cpl::make_unique<OGRTriangle>();
auto poCurve = std::unique_ptr<OGRCurve>(poGeom.release()->toCurve());
if (poTriangle->addRing(std::move(poCurve)) != OGRERR_NONE)
{
return nullptr;
}
return poTriangle;
}
/* -------------------------------------------------------------------- */
/* LinearRing */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "LinearRing"))
{
auto poLinearRing = cpl::make_unique<OGRLinearRing>();
if (!ParseGMLCoordinates(psNode, poLinearRing.get(), nSRSDimension))
{
return nullptr;
}
return poLinearRing;
}
const auto storeArcByCenterPointParameters =
[](const CPLXMLNode *psChild, const char *l_pszSRSName,
bool &bIsApproximateArc, double &dfLastCurveApproximateArcRadius,
bool &bLastCurveWasApproximateArcInvertedAxisOrder)
{
const CPLXMLNode *psRadius = FindBareXMLChild(psChild, "radius");
if (psRadius && psRadius->eType == CXT_Element)
{
double dfRadius = CPLAtof(CPLGetXMLValue(psRadius, nullptr, "0"));
const char *pszUnits = CPLGetXMLValue(psRadius, "uom", nullptr);
bool bSRSUnitIsDegree = false;
bool bInvertedAxisOrder = false;
if (l_pszSRSName != nullptr)
{
OGRSpatialReference oSRS;
if (oSRS.SetFromUserInput(l_pszSRSName) == OGRERR_NONE)
{
if (oSRS.IsGeographic())
{
bInvertedAxisOrder =
CPL_TO_BOOL(oSRS.EPSGTreatsAsLatLong());
bSRSUnitIsDegree =
fabs(oSRS.GetAngularUnits(nullptr) -
CPLAtof(SRS_UA_DEGREE_CONV)) < 1e-8;
}
}
}
if (bSRSUnitIsDegree && pszUnits != nullptr &&
(dfRadius = GetDistanceInMetre(dfRadius, pszUnits)) > 0)
{
bIsApproximateArc = true;
dfLastCurveApproximateArcRadius = dfRadius;
bLastCurveWasApproximateArcInvertedAxisOrder =
bInvertedAxisOrder;
}
}
};
const auto connectArcByCenterPointToOtherSegments =
[](OGRGeometry *poGeom, OGRCompoundCurve *poCC,
const bool bIsApproximateArc, const bool bLastCurveWasApproximateArc,
const double dfLastCurveApproximateArcRadius,
const bool bLastCurveWasApproximateArcInvertedAxisOrder)
{
if (bIsApproximateArc)
{
if (poGeom->getGeometryType() == wkbLineString)
{
OGRCurve *poPreviousCurve =
poCC->getCurve(poCC->getNumCurves() - 1);
OGRLineString *poLS = poGeom->toLineString();
if (poPreviousCurve->getNumPoints() >= 2 &&
poLS->getNumPoints() >= 2)
{
OGRPoint p;
OGRPoint p2;
poPreviousCurve->EndPoint(&p);
poLS->StartPoint(&p2);
double dfDistance = 0.0;
if (bLastCurveWasApproximateArcInvertedAxisOrder)
dfDistance = OGR_GreatCircle_Distance(
p.getX(), p.getY(), p2.getX(), p2.getY());
else
dfDistance = OGR_GreatCircle_Distance(
p.getY(), p.getX(), p2.getY(), p2.getX());
// CPLDebug("OGR", "%f %f",
// dfDistance,
// dfLastCurveApproximateArcRadius
// / 10.0 );
if (dfDistance < dfLastCurveApproximateArcRadius / 5.0)
{
CPLDebug("OGR", "Moving approximate start of "
"ArcByCenterPoint to end of "
"previous curve");
poLS->setPoint(0, &p);
}
}
}
}
else if (bLastCurveWasApproximateArc)
{
OGRCurve *poPreviousCurve =
poCC->getCurve(poCC->getNumCurves() - 1);
if (poPreviousCurve->getGeometryType() == wkbLineString)
{
OGRLineString *poLS = poPreviousCurve->toLineString();
OGRCurve *poAsCurve = poGeom->toCurve();
if (poLS->getNumPoints() >= 2 && poAsCurve->getNumPoints() >= 2)
{
OGRPoint p;
OGRPoint p2;
poAsCurve->StartPoint(&p);
poLS->EndPoint(&p2);
double dfDistance = 0.0;
if (bLastCurveWasApproximateArcInvertedAxisOrder)
dfDistance = OGR_GreatCircle_Distance(
p.getX(), p.getY(), p2.getX(), p2.getY());
else
dfDistance = OGR_GreatCircle_Distance(
p.getY(), p.getX(), p2.getY(), p2.getX());
// CPLDebug(
// "OGR", "%f %f",
// dfDistance,
// dfLastCurveApproximateArcRadius / 10.0 );
// "A-311 WHEELER AFB OAHU, HI.xml" needs more
// than 10%.
if (dfDistance < dfLastCurveApproximateArcRadius / 5.0)
{
CPLDebug("OGR", "Moving approximate end of last "
"ArcByCenterPoint to start of the "
"current curve");
poLS->setPoint(poLS->getNumPoints() - 1, &p);
}
}
}
}
};
/* -------------------------------------------------------------------- */
/* Ring GML3 */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Ring"))
{
std::unique_ptr<OGRCurve> poRing;
std::unique_ptr<OGRCompoundCurve> poCC;
bool bChildrenAreAllLineString = true;
bool bLastCurveWasApproximateArc = false;
bool bLastCurveWasApproximateArcInvertedAxisOrder = false;
double dfLastCurveApproximateArcRadius = 0.0;
bool bIsFirstChild = true;
bool bFirstChildIsApproximateArc = false;
double dfFirstChildApproximateArcRadius = 0.0;
bool bFirstChildWasApproximateArcInvertedAxisOrder = false;
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "curveMember"))
{
const CPLXMLNode *psCurveChild = GetChildElement(psChild);
std::unique_ptr<OGRGeometry> poGeom;
if (psCurveChild != nullptr)
{
poGeom = GML2OGRGeometry_XMLNode_Internal(
psCurveChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
}
else
{
if (psChild->psChild &&
psChild->psChild->eType == CXT_Attribute &&
psChild->psChild->psNext == nullptr &&
strcmp(psChild->psChild->pszValue, "xlink:href") == 0)
{
CPLError(CE_Warning, CPLE_AppDefined,
"Cannot resolve xlink:href='%s'. "
"Try setting GML_SKIP_RESOLVE_ELEMS=NONE",
psChild->psChild->psChild->pszValue);
}
return nullptr;
}
// Try to join multiline string to one linestring.
if (poGeom &&
wkbFlatten(poGeom->getGeometryType()) == wkbMultiLineString)
{
poGeom.reset(OGRGeometryFactory::forceToLineString(
poGeom.release(), false));
}
if (poGeom == nullptr ||
!OGR_GT_IsCurve(poGeom->getGeometryType()))
{
return nullptr;
}
if (wkbFlatten(poGeom->getGeometryType()) != wkbLineString)
bChildrenAreAllLineString = false;
// Ad-hoc logic to handle nicely connecting ArcByCenterPoint
// with consecutive curves, as found in some AIXM files.
bool bIsApproximateArc = false;
const CPLXMLNode *psChild2, *psChild3;
if (strcmp(BareGMLElement(psCurveChild->pszValue), "Curve") ==
0 &&
(psChild2 = GetChildElement(psCurveChild)) != nullptr &&
strcmp(BareGMLElement(psChild2->pszValue), "segments") ==
0 &&
(psChild3 = GetChildElement(psChild2)) != nullptr &&
strcmp(BareGMLElement(psChild3->pszValue),
"ArcByCenterPoint") == 0)
{
storeArcByCenterPointParameters(
psChild3, pszSRSName, bIsApproximateArc,
dfLastCurveApproximateArcRadius,
bLastCurveWasApproximateArcInvertedAxisOrder);
if (bIsFirstChild && bIsApproximateArc)
{
bFirstChildIsApproximateArc = true;
dfFirstChildApproximateArcRadius =
dfLastCurveApproximateArcRadius;
bFirstChildWasApproximateArcInvertedAxisOrder =
bLastCurveWasApproximateArcInvertedAxisOrder;
}
else if (psChild3->psNext)
{
bIsApproximateArc = false;
}
}
bIsFirstChild = false;
if (poCC == nullptr && poRing == nullptr)
{
poRing.reset(poGeom.release()->toCurve());
}
else
{
if (poCC == nullptr)
{
poCC = cpl::make_unique<OGRCompoundCurve>();
bool bIgnored = false;
if (!GML2OGRGeometry_AddToCompositeCurve(
poCC.get(), std::move(poRing), bIgnored))
{
return nullptr;
}
poRing.reset();
}
connectArcByCenterPointToOtherSegments(
poGeom.get(), poCC.get(), bIsApproximateArc,
bLastCurveWasApproximateArc,
dfLastCurveApproximateArcRadius,
bLastCurveWasApproximateArcInvertedAxisOrder);
auto poCurve =
std::unique_ptr<OGRCurve>(poGeom.release()->toCurve());
bool bIgnored = false;
if (!GML2OGRGeometry_AddToCompositeCurve(
poCC.get(), std::move(poCurve), bIgnored))
{
return nullptr;
}
}
bLastCurveWasApproximateArc = bIsApproximateArc;
}
}
/* Detect if the last object in the following hierarchy is a
ArcByCenterPoint <gml:Ring> <gml:curveMember> (may be repeated)
<gml:Curve>
<gml:segments>
....
<gml:ArcByCenterPoint ... />
</gml:segments>
</gml:Curve>
</gml:curveMember>
</gml:Ring>
*/
bool bLastChildIsApproximateArc = false;
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "curveMember"))
{
const CPLXMLNode *psCurveMemberChild = GetChildElement(psChild);
if (psCurveMemberChild &&
psCurveMemberChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psCurveMemberChild->pszValue),
"Curve"))
{
const CPLXMLNode *psCurveChild =
GetChildElement(psCurveMemberChild);
if (psCurveChild && psCurveChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psCurveChild->pszValue),
"segments"))
{
for (const CPLXMLNode *psChild2 = psCurveChild->psChild;
psChild2 != nullptr; psChild2 = psChild2->psNext)
{
if (psChild2->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild2->pszValue),
"ArcByCenterPoint"))
{
storeArcByCenterPointParameters(
psChild2, pszSRSName,
bLastChildIsApproximateArc,
dfLastCurveApproximateArcRadius,
bLastCurveWasApproximateArcInvertedAxisOrder);
}
else
{
bLastChildIsApproximateArc = false;
}
}
}
else
{
bLastChildIsApproximateArc = false;
}
}
else
{
bLastChildIsApproximateArc = false;
}
}
else
{
bLastChildIsApproximateArc = false;
}
}
if (poRing)
{
if (poRing->getNumPoints() >= 2 && bFirstChildIsApproximateArc &&
!poRing->get_IsClosed() &&
wkbFlatten(poRing->getGeometryType()) == wkbLineString)
{
OGRLineString *poLS = poRing->toLineString();
OGRPoint p;
OGRPoint p2;
poLS->StartPoint(&p);
poLS->EndPoint(&p2);
double dfDistance = 0.0;
if (bFirstChildWasApproximateArcInvertedAxisOrder)
dfDistance = OGR_GreatCircle_Distance(p.getX(), p.getY(),
p2.getX(), p2.getY());
else
dfDistance = OGR_GreatCircle_Distance(p.getY(), p.getX(),
p2.getY(), p2.getX());
if (dfDistance < dfFirstChildApproximateArcRadius / 5.0)
{
CPLDebug("OGR", "Moving approximate start of "
"ArcByCenterPoint to end of "
"curve");
poLS->setPoint(0, &p2);
}
}
else if (poRing->getNumPoints() >= 2 &&
bLastChildIsApproximateArc && !poRing->get_IsClosed() &&
wkbFlatten(poRing->getGeometryType()) == wkbLineString)
{
OGRLineString *poLS = poRing->toLineString();
OGRPoint p;
OGRPoint p2;
poLS->StartPoint(&p);
poLS->EndPoint(&p2);
double dfDistance = 0.0;
if (bLastCurveWasApproximateArcInvertedAxisOrder)
dfDistance = OGR_GreatCircle_Distance(p.getX(), p.getY(),
p2.getX(), p2.getY());
else
dfDistance = OGR_GreatCircle_Distance(p.getY(), p.getX(),
p2.getY(), p2.getX());
if (dfDistance < dfLastCurveApproximateArcRadius / 5.0)
{
CPLDebug("OGR", "Moving approximate end of "
"ArcByCenterPoint to start of "
"curve");
poLS->setPoint(poLS->getNumPoints() - 1, &p);
}
}
if (poRing->getNumPoints() < 2 || !poRing->get_IsClosed())
{
CPLError(CE_Failure, CPLE_AppDefined, "Non-closed ring");
return nullptr;
}
return poRing;
}
if (poCC == nullptr)
return nullptr;
else if (/* bCastToLinearTypeIfPossible &&*/ bChildrenAreAllLineString)
{
return std::unique_ptr<OGRLinearRing>(
OGRCurve::CastToLinearRing(poCC.release()));
}
else
{
if (poCC->getNumPoints() < 2 || !poCC->get_IsClosed())
{
CPLError(CE_Failure, CPLE_AppDefined, "Non-closed ring");
return nullptr;
}
return poCC;
}
}
/* -------------------------------------------------------------------- */
/* LineString */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "LineString") ||
EQUAL(pszBaseGeometry, "LineStringSegment") ||
EQUAL(pszBaseGeometry, "GeodesicString"))
{
auto poLine = cpl::make_unique<OGRLineString>();
if (!ParseGMLCoordinates(psNode, poLine.get(), nSRSDimension))
{
return nullptr;
}
return poLine;
}
/* -------------------------------------------------------------------- */
/* Arc */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Arc"))
{
auto poCC = cpl::make_unique<OGRCircularString>();
if (!ParseGMLCoordinates(psNode, poCC.get(), nSRSDimension))
{
return nullptr;
}
// Normally a gml:Arc has only 3 points of controls, but in the
// wild we sometimes find GML with 5 points, so accept any odd
// number >= 3 (ArcString should be used for > 3 points)
if (poCC->getNumPoints() < 3 || (poCC->getNumPoints() % 2) != 1)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Bad number of points in Arc");
return nullptr;
}
return poCC;
}
/* -------------------------------------------------------------------- */
/* ArcString */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "ArcString"))
{
auto poCC = cpl::make_unique<OGRCircularString>();
if (!ParseGMLCoordinates(psNode, poCC.get(), nSRSDimension))
{
return nullptr;
}
if (poCC->getNumPoints() < 3 || (poCC->getNumPoints() % 2) != 1)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Bad number of points in ArcString");
return nullptr;
}
return poCC;
}
/* -------------------------------------------------------------------- */
/* Circle */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Circle"))
{
auto poLine = cpl::make_unique<OGRLineString>();
if (!ParseGMLCoordinates(psNode, poLine.get(), nSRSDimension))
{
return nullptr;
}
if (poLine->getNumPoints() != 3)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Bad number of points in Circle");
return nullptr;
}
double R = 0.0;
double cx = 0.0;
double cy = 0.0;
double alpha0 = 0.0;
double alpha1 = 0.0;
double alpha2 = 0.0;
if (!OGRGeometryFactory::GetCurveParameters(
poLine->getX(0), poLine->getY(0), poLine->getX(1),
poLine->getY(1), poLine->getX(2), poLine->getY(2), R, cx, cy,
alpha0, alpha1, alpha2))
{
return nullptr;
}
auto poCC = cpl::make_unique<OGRCircularString>();
OGRPoint p;
poLine->getPoint(0, &p);
poCC->addPoint(&p);
poLine->getPoint(1, &p);
poCC->addPoint(&p);
poLine->getPoint(2, &p);
poCC->addPoint(&p);
const double alpha4 =
alpha2 > alpha0 ? alpha0 + kdf2PI : alpha0 - kdf2PI;
const double alpha3 = (alpha2 + alpha4) / 2.0;
const double x = cx + R * cos(alpha3);
const double y = cy + R * sin(alpha3);
if (poCC->getCoordinateDimension() == 3)
poCC->addPoint(x, y, p.getZ());
else
poCC->addPoint(x, y);
poLine->getPoint(0, &p);
poCC->addPoint(&p);
return poCC;
}
/* -------------------------------------------------------------------- */
/* ArcByBulge */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "ArcByBulge"))
{
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "bulge");
if (psChild == nullptr || psChild->eType != CXT_Element ||
psChild->psChild == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "Missing bulge element.");
return nullptr;
}
const double dfBulge = CPLAtof(psChild->psChild->pszValue);
psChild = FindBareXMLChild(psNode, "normal");
if (psChild == nullptr || psChild->eType != CXT_Element)
{
CPLError(CE_Failure, CPLE_AppDefined, "Missing normal element.");
return nullptr;
}
double dfNormal = CPLAtof(psChild->psChild->pszValue);
auto poLS = cpl::make_unique<OGRLineString>();
if (!ParseGMLCoordinates(psNode, poLS.get(), nSRSDimension))
{
return nullptr;
}
if (poLS->getNumPoints() != 2)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Bad number of points in ArcByBulge");
return nullptr;
}
auto poCC = cpl::make_unique<OGRCircularString>();
OGRPoint p;
poLS->getPoint(0, &p);
poCC->addPoint(&p);
const double dfMidX = (poLS->getX(0) + poLS->getX(1)) / 2.0;
const double dfMidY = (poLS->getY(0) + poLS->getY(1)) / 2.0;
const double dfDirX = (poLS->getX(1) - poLS->getX(0)) / 2.0;
const double dfDirY = (poLS->getY(1) - poLS->getY(0)) / 2.0;
double dfNormX = -dfDirY;
double dfNormY = dfDirX;
const double dfNorm = sqrt(dfNormX * dfNormX + dfNormY * dfNormY);
if (dfNorm != 0.0)
{
dfNormX /= dfNorm;
dfNormY /= dfNorm;
}
const double dfNewX = dfMidX + dfNormX * dfBulge * dfNormal;
const double dfNewY = dfMidY + dfNormY * dfBulge * dfNormal;
if (poCC->getCoordinateDimension() == 3)
poCC->addPoint(dfNewX, dfNewY, p.getZ());
else
poCC->addPoint(dfNewX, dfNewY);
poLS->getPoint(1, &p);
poCC->addPoint(&p);
return poCC;
}
/* -------------------------------------------------------------------- */
/* ArcByCenterPoint */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "ArcByCenterPoint"))
{
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "radius");
if (psChild == nullptr || psChild->eType != CXT_Element)
{
CPLError(CE_Failure, CPLE_AppDefined, "Missing radius element.");
return nullptr;
}
const double dfRadius = CPLAtof(CPLGetXMLValue(psChild, nullptr, "0"));
const char *pszUnits = CPLGetXMLValue(psChild, "uom", nullptr);
psChild = FindBareXMLChild(psNode, "startAngle");
if (psChild == nullptr || psChild->eType != CXT_Element)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing startAngle element.");
return nullptr;
}
const double dfStartAngle =
CPLAtof(CPLGetXMLValue(psChild, nullptr, "0"));
psChild = FindBareXMLChild(psNode, "endAngle");
if (psChild == nullptr || psChild->eType != CXT_Element)
{
CPLError(CE_Failure, CPLE_AppDefined, "Missing endAngle element.");
return nullptr;
}
const double dfEndAngle =
CPLAtof(CPLGetXMLValue(psChild, nullptr, "0"));
OGRPoint p;
if (!ParseGMLCoordinates(psNode, &p, nSRSDimension))
{
return nullptr;
}
bool bSRSUnitIsDegree = false;
bool bInvertedAxisOrder = false;
if (pszSRSName != nullptr)
{
OGRSpatialReference oSRS;
if (oSRS.SetFromUserInput(pszSRSName) == OGRERR_NONE)
{
if (oSRS.IsGeographic())
{
bInvertedAxisOrder =
CPL_TO_BOOL(oSRS.EPSGTreatsAsLatLong());
bSRSUnitIsDegree = fabs(oSRS.GetAngularUnits(nullptr) -
CPLAtof(SRS_UA_DEGREE_CONV)) < 1e-8;
}
else if (oSRS.IsProjected())
{
bInvertedAxisOrder =
CPL_TO_BOOL(oSRS.EPSGTreatsAsNorthingEasting());
}
}
}
double dfCenterX = p.getX();
double dfCenterY = p.getY();
double dfDistance;
if (bSRSUnitIsDegree && pszUnits != nullptr &&
(dfDistance = GetDistanceInMetre(dfRadius, pszUnits)) > 0)
{
auto poLS = cpl::make_unique<OGRLineString>();
// coverity[tainted_data]
const double dfStep =
CPLAtof(CPLGetConfigOption("OGR_ARC_STEPSIZE", "4"));
const double dfSign = dfStartAngle < dfEndAngle ? 1 : -1;
for (double dfAngle = dfStartAngle;
(dfAngle - dfEndAngle) * dfSign < 0;
dfAngle += dfSign * dfStep)
{
double dfLong = 0.0;
double dfLat = 0.0;
if (bInvertedAxisOrder)
{
OGR_GreatCircle_ExtendPosition(
dfCenterX, dfCenterY, dfDistance,
// See
// https://ext.eurocontrol.int/aixm_confluence/display/ACG/ArcByCenterPoint+Interpretation+Summary
dfAngle, &dfLat, &dfLong);
p.setX(dfLat); // yes, external code will do the swap later
p.setY(dfLong);
}
else
{
OGR_GreatCircle_ExtendPosition(dfCenterY, dfCenterX,
dfDistance, 90 - dfAngle,
&dfLat, &dfLong);
p.setX(dfLong);
p.setY(dfLat);
}
poLS->addPoint(&p);
}
double dfLong = 0.0;
double dfLat = 0.0;
if (bInvertedAxisOrder)
{
OGR_GreatCircle_ExtendPosition(dfCenterX, dfCenterY, dfDistance,
dfEndAngle, &dfLat, &dfLong);
p.setX(dfLat); // yes, external code will do the swap later
p.setY(dfLong);
}
else
{
OGR_GreatCircle_ExtendPosition(dfCenterY, dfCenterX, dfDistance,
90 - dfEndAngle, &dfLat,
&dfLong);
p.setX(dfLong);
p.setY(dfLat);
}
poLS->addPoint(&p);
return poLS;
}
if (bInvertedAxisOrder)
std::swap(dfCenterX, dfCenterY);
auto poCC = cpl::make_unique<OGRCircularString>();
p.setX(dfCenterX + dfRadius * cos(dfStartAngle * kdfD2R));
p.setY(dfCenterY + dfRadius * sin(dfStartAngle * kdfD2R));
poCC->addPoint(&p);
const double dfAverageAngle = (dfStartAngle + dfEndAngle) / 2.0;
p.setX(dfCenterX + dfRadius * cos(dfAverageAngle * kdfD2R));
p.setY(dfCenterY + dfRadius * sin(dfAverageAngle * kdfD2R));
poCC->addPoint(&p);
p.setX(dfCenterX + dfRadius * cos(dfEndAngle * kdfD2R));
p.setY(dfCenterY + dfRadius * sin(dfEndAngle * kdfD2R));
poCC->addPoint(&p);
if (bInvertedAxisOrder)
poCC->swapXY();
return poCC;
}
/* -------------------------------------------------------------------- */
/* CircleByCenterPoint */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "CircleByCenterPoint"))
{
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "radius");
if (psChild == nullptr || psChild->eType != CXT_Element)
{
CPLError(CE_Failure, CPLE_AppDefined, "Missing radius element.");
return nullptr;
}
const double dfRadius = CPLAtof(CPLGetXMLValue(psChild, nullptr, "0"));
const char *pszUnits = CPLGetXMLValue(psChild, "uom", nullptr);
OGRPoint p;
if (!ParseGMLCoordinates(psNode, &p, nSRSDimension))
{
return nullptr;
}
bool bSRSUnitIsDegree = false;
bool bInvertedAxisOrder = false;
if (pszSRSName != nullptr)
{
OGRSpatialReference oSRS;
if (oSRS.SetFromUserInput(pszSRSName) == OGRERR_NONE)
{
if (oSRS.IsGeographic())
{
bInvertedAxisOrder =
CPL_TO_BOOL(oSRS.EPSGTreatsAsLatLong());
bSRSUnitIsDegree = fabs(oSRS.GetAngularUnits(nullptr) -
CPLAtof(SRS_UA_DEGREE_CONV)) < 1e-8;
}
else if (oSRS.IsProjected())
{
bInvertedAxisOrder =
CPL_TO_BOOL(oSRS.EPSGTreatsAsNorthingEasting());
}
}
}
double dfCenterX = p.getX();
double dfCenterY = p.getY();
double dfDistance;
if (bSRSUnitIsDegree && pszUnits != nullptr &&
(dfDistance = GetDistanceInMetre(dfRadius, pszUnits)) > 0)
{
auto poLS = cpl::make_unique<OGRLineString>();
const double dfStep =
CPLAtof(CPLGetConfigOption("OGR_ARC_STEPSIZE", "4"));
for (double dfAngle = 0; dfAngle < 360; dfAngle += dfStep)
{
double dfLong = 0.0;
double dfLat = 0.0;
if (bInvertedAxisOrder)
{
OGR_GreatCircle_ExtendPosition(dfCenterX, dfCenterY,
dfDistance, dfAngle, &dfLat,
&dfLong);
p.setX(dfLat); // yes, external code will do the swap later
p.setY(dfLong);
}
else
{
OGR_GreatCircle_ExtendPosition(dfCenterY, dfCenterX,
dfDistance, dfAngle, &dfLat,
&dfLong);
p.setX(dfLong);
p.setY(dfLat);
}
poLS->addPoint(&p);
}
poLS->getPoint(0, &p);
poLS->addPoint(&p);
return poLS;
}
if (bInvertedAxisOrder)
std::swap(dfCenterX, dfCenterY);
auto poCC = cpl::make_unique<OGRCircularString>();
p.setX(dfCenterX - dfRadius);
p.setY(dfCenterY);
poCC->addPoint(&p);
p.setX(dfCenterX + dfRadius);
p.setY(dfCenterY);
poCC->addPoint(&p);
p.setX(dfCenterX - dfRadius);
p.setY(dfCenterY);
poCC->addPoint(&p);
if (bInvertedAxisOrder)
poCC->swapXY();
return poCC;
}
/* -------------------------------------------------------------------- */
/* PointType */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "PointType") ||
EQUAL(pszBaseGeometry, "Point") ||
EQUAL(pszBaseGeometry, "ConnectionPoint"))
{
auto poPoint = cpl::make_unique<OGRPoint>();
if (!ParseGMLCoordinates(psNode, poPoint.get(), nSRSDimension))
{
return nullptr;
}
return poPoint;
}
/* -------------------------------------------------------------------- */
/* Box */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "BoxType") || EQUAL(pszBaseGeometry, "Box"))
{
OGRLineString oPoints;
if (!ParseGMLCoordinates(psNode, &oPoints, nSRSDimension))
return nullptr;
if (oPoints.getNumPoints() < 2)
return nullptr;
auto poBoxRing = cpl::make_unique<OGRLinearRing>();
auto poBoxPoly = cpl::make_unique<OGRPolygon>();
poBoxRing->setNumPoints(5);
poBoxRing->setPoint(0, oPoints.getX(0), oPoints.getY(0),
oPoints.getZ(0));
poBoxRing->setPoint(1, oPoints.getX(1), oPoints.getY(0),
oPoints.getZ(0));
poBoxRing->setPoint(2, oPoints.getX(1), oPoints.getY(1),
oPoints.getZ(1));
poBoxRing->setPoint(3, oPoints.getX(0), oPoints.getY(1),
oPoints.getZ(0));
poBoxRing->setPoint(4, oPoints.getX(0), oPoints.getY(0),
oPoints.getZ(0));
poBoxRing->set3D(oPoints.Is3D());
poBoxPoly->addRing(std::move(poBoxRing));
return poBoxPoly;
}
/* -------------------------------------------------------------------- */
/* Envelope */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Envelope"))
{
const CPLXMLNode *psLowerCorner =
FindBareXMLChild(psNode, "lowerCorner");
const CPLXMLNode *psUpperCorner =
FindBareXMLChild(psNode, "upperCorner");
if (psLowerCorner == nullptr || psUpperCorner == nullptr)
return nullptr;
const char *pszLowerCorner = GetElementText(psLowerCorner);
const char *pszUpperCorner = GetElementText(psUpperCorner);
if (pszLowerCorner == nullptr || pszUpperCorner == nullptr)
return nullptr;
char **papszLowerCorner = CSLTokenizeString(pszLowerCorner);
char **papszUpperCorner = CSLTokenizeString(pszUpperCorner);
const int nTokenCountLC = CSLCount(papszLowerCorner);
const int nTokenCountUC = CSLCount(papszUpperCorner);
if (nTokenCountLC < 2 || nTokenCountUC < 2)
{
CSLDestroy(papszLowerCorner);
CSLDestroy(papszUpperCorner);
return nullptr;
}
const double dfLLX = CPLAtof(papszLowerCorner[0]);
const double dfLLY = CPLAtof(papszLowerCorner[1]);
const double dfURX = CPLAtof(papszUpperCorner[0]);
const double dfURY = CPLAtof(papszUpperCorner[1]);
CSLDestroy(papszLowerCorner);
CSLDestroy(papszUpperCorner);
auto poEnvelopeRing = cpl::make_unique<OGRLinearRing>();
auto poPoly = cpl::make_unique<OGRPolygon>();
poEnvelopeRing->setNumPoints(5);
poEnvelopeRing->setPoint(0, dfLLX, dfLLY);
poEnvelopeRing->setPoint(1, dfURX, dfLLY);
poEnvelopeRing->setPoint(2, dfURX, dfURY);
poEnvelopeRing->setPoint(3, dfLLX, dfURY);
poEnvelopeRing->setPoint(4, dfLLX, dfLLY);
poPoly->addRing(std::move(poEnvelopeRing));
return poPoly;
}
/* --------------------------------------------------------------------- */
/* MultiPolygon / MultiSurface / CompositeSurface */
/* */
/* For CompositeSurface, this is a very rough approximation to deal with */
/* it as a MultiPolygon, because it can several faces of a 3D volume. */
/* --------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "MultiPolygon") ||
EQUAL(pszBaseGeometry, "MultiSurface") ||
EQUAL(pszBaseGeometry, "CompositeSurface"))
{
std::unique_ptr<OGRMultiSurface> poMS =
EQUAL(pszBaseGeometry, "MultiPolygon")
? cpl::make_unique<OGRMultiPolygon>()
: cpl::make_unique<OGRMultiSurface>();
bool bReconstructTopology = false;
bool bChildrenAreAllPolygons = true;
// Iterate over children.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
const char *pszMemberElement = BareGMLElement(psChild->pszValue);
if (psChild->eType == CXT_Element &&
(EQUAL(pszMemberElement, "polygonMember") ||
EQUAL(pszMemberElement, "surfaceMember")))
{
const CPLXMLNode *psSurfaceChild = GetChildElement(psChild);
if (psSurfaceChild != nullptr)
{
// Cf #5421 where there are PolygonPatch with only inner
// rings.
const CPLXMLNode *psPolygonPatch =
GetChildElement(GetChildElement(psSurfaceChild));
const CPLXMLNode *psPolygonPatchChild = nullptr;
if (psPolygonPatch != nullptr &&
psPolygonPatch->eType == CXT_Element &&
EQUAL(BareGMLElement(psPolygonPatch->pszValue),
"PolygonPatch") &&
(psPolygonPatchChild =
GetChildElement(psPolygonPatch)) != nullptr &&
EQUAL(BareGMLElement(psPolygonPatchChild->pszValue),
"interior"))
{
// Find all inner rings
for (const CPLXMLNode *psChild2 =
psPolygonPatch->psChild;
psChild2 != nullptr; psChild2 = psChild2->psNext)
{
if (psChild2->eType == CXT_Element &&
(EQUAL(BareGMLElement(psChild2->pszValue),
"interior")))
{
const CPLXMLNode *psInteriorChild =
GetChildElement(psChild2);
auto poRing =
psInteriorChild == nullptr
? nullptr
: GML2OGRGeometry_XMLNode_Internal(
psInteriorChild,
nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension,
pszSRSName);
if (poRing == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid interior ring");
return nullptr;
}
if (!EQUAL(poRing->getGeometryName(),
"LINEARRING"))
{
CPLError(CE_Failure, CPLE_AppDefined,
"%s: Got %.500s geometry as "
"innerBoundaryIs instead of "
"LINEARRING.",
pszBaseGeometry,
poRing->getGeometryName());
return nullptr;
}
bReconstructTopology = true;
auto poPolygon = cpl::make_unique<OGRPolygon>();
auto poLinearRing =
std::unique_ptr<OGRLinearRing>(
poRing.release()->toLinearRing());
poPolygon->addRing(std::move(poLinearRing));
poMS->addGeometry(std::move(poPolygon));
}
}
}
else
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psSurfaceChild,
nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (!GML2OGRGeometry_AddToMultiSurface(
poMS.get(), std::move(poGeom), pszMemberElement,
bChildrenAreAllPolygons))
{
return nullptr;
}
}
}
}
else if (psChild->eType == CXT_Element &&
EQUAL(pszMemberElement, "surfaceMembers"))
{
for (const CPLXMLNode *psChild2 = psChild->psChild;
psChild2 != nullptr; psChild2 = psChild2->psNext)
{
pszMemberElement = BareGMLElement(psChild2->pszValue);
if (psChild2->eType == CXT_Element &&
(EQUAL(pszMemberElement, "Surface") ||
EQUAL(pszMemberElement, "Polygon") ||
EQUAL(pszMemberElement, "PolygonPatch") ||
EQUAL(pszMemberElement, "CompositeSurface")))
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild2, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (!GML2OGRGeometry_AddToMultiSurface(
poMS.get(), std::move(poGeom), pszMemberElement,
bChildrenAreAllPolygons))
{
return nullptr;
}
}
}
}
}
if (bReconstructTopology && bChildrenAreAllPolygons)
{
auto poMPoly =
wkbFlatten(poMS->getGeometryType()) == wkbMultiSurface
? std::unique_ptr<OGRMultiPolygon>(
OGRMultiSurface::CastToMultiPolygon(poMS.release()))
: std::unique_ptr<OGRMultiPolygon>(
poMS.release()->toMultiPolygon());
const int nPolygonCount = poMPoly->getNumGeometries();
std::vector<OGRGeometry *> apoPolygons;
apoPolygons.reserve(nPolygonCount);
for (int i = 0; i < nPolygonCount; i++)
{
apoPolygons.emplace_back(poMPoly->getGeometryRef(0));
poMPoly->removeGeometry(0, FALSE);
}
poMPoly.reset();
int bResultValidGeometry = FALSE;
return std::unique_ptr<OGRGeometry>(
OGRGeometryFactory::organizePolygons(
apoPolygons.data(), nPolygonCount, &bResultValidGeometry));
}
else
{
if (/* bCastToLinearTypeIfPossible && */
wkbFlatten(poMS->getGeometryType()) == wkbMultiSurface &&
bChildrenAreAllPolygons)
{
return std::unique_ptr<OGRMultiPolygon>(
OGRMultiSurface::CastToMultiPolygon(poMS.release()));
}
return poMS;
}
}
/* -------------------------------------------------------------------- */
/* MultiPoint */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "MultiPoint"))
{
auto poMP = cpl::make_unique<OGRMultiPoint>();
// Collect points.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "pointMember"))
{
const CPLXMLNode *psPointChild = GetChildElement(psChild);
if (psPointChild != nullptr)
{
auto poPointMember = GML2OGRGeometry_XMLNode_Internal(
psPointChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poPointMember == nullptr ||
wkbFlatten(poPointMember->getGeometryType()) !=
wkbPoint)
{
CPLError(CE_Failure, CPLE_AppDefined,
"MultiPoint: Got %.500s geometry as "
"pointMember instead of POINT",
poPointMember
? poPointMember->getGeometryName()
: "NULL");
return nullptr;
}
poMP->addGeometry(std::move(poPointMember));
}
}
else if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "pointMembers"))
{
for (const CPLXMLNode *psChild2 = psChild->psChild;
psChild2 != nullptr; psChild2 = psChild2->psNext)
{
if (psChild2->eType == CXT_Element &&
(EQUAL(BareGMLElement(psChild2->pszValue), "Point")))
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild2, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "Invalid %s",
BareGMLElement(psChild2->pszValue));
return nullptr;
}
if (wkbFlatten(poGeom->getGeometryType()) == wkbPoint)
{
auto poPoint = std::unique_ptr<OGRPoint>(
poGeom.release()->toPoint());
poMP->addGeometry(std::move(poPoint));
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Got %.500s geometry as pointMember "
"instead of POINT.",
poGeom->getGeometryName());
return nullptr;
}
}
}
}
}
return poMP;
}
/* -------------------------------------------------------------------- */
/* MultiLineString */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "MultiLineString"))
{
auto poMLS = cpl::make_unique<OGRMultiLineString>();
// Collect lines.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "lineStringMember"))
{
const CPLXMLNode *psLineStringChild = GetChildElement(psChild);
auto poGeom =
psLineStringChild == nullptr
? nullptr
: GML2OGRGeometry_XMLNode_Internal(
psLineStringChild,
nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr ||
wkbFlatten(poGeom->getGeometryType()) != wkbLineString)
{
CPLError(CE_Failure, CPLE_AppDefined,
"MultiLineString: Got %.500s geometry as Member "
"instead of LINESTRING.",
poGeom ? poGeom->getGeometryName() : "NULL");
return nullptr;
}
poMLS->addGeometry(std::move(poGeom));
}
}
return poMLS;
}
/* -------------------------------------------------------------------- */
/* MultiCurve */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "MultiCurve"))
{
auto poMC = cpl::make_unique<OGRMultiCurve>();
bool bChildrenAreAllLineString = true;
// Collect curveMembers.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "curveMember"))
{
const CPLXMLNode *psChild2 = GetChildElement(psChild);
if (psChild2 != nullptr) // Empty curveMember is valid.
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild2, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr ||
!OGR_GT_IsCurve(poGeom->getGeometryType()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"MultiCurve: Got %.500s geometry as Member "
"instead of a curve.",
poGeom ? poGeom->getGeometryName() : "NULL");
return nullptr;
}
if (wkbFlatten(poGeom->getGeometryType()) != wkbLineString)
bChildrenAreAllLineString = false;
if (poMC->addGeometry(std::move(poGeom)) != OGRERR_NONE)
{
return nullptr;
}
}
}
else if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "curveMembers"))
{
for (const CPLXMLNode *psChild2 = psChild->psChild;
psChild2 != nullptr; psChild2 = psChild2->psNext)
{
if (psChild2->eType == CXT_Element)
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild2, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr ||
!OGR_GT_IsCurve(poGeom->getGeometryType()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"MultiCurve: Got %.500s geometry as "
"Member instead of a curve.",
poGeom ? poGeom->getGeometryName()
: "NULL");
return nullptr;
}
if (wkbFlatten(poGeom->getGeometryType()) !=
wkbLineString)
bChildrenAreAllLineString = false;
if (poMC->addGeometry(std::move(poGeom)) != OGRERR_NONE)
{
return nullptr;
}
}
}
}
}
if (/* bCastToLinearTypeIfPossible && */ bChildrenAreAllLineString)
{
return std::unique_ptr<OGRMultiLineString>(
OGRMultiCurve::CastToMultiLineString(poMC.release()));
}
return poMC;
}
/* -------------------------------------------------------------------- */
/* CompositeCurve */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "CompositeCurve"))
{
auto poCC = cpl::make_unique<OGRCompoundCurve>();
bool bChildrenAreAllLineString = true;
// Collect curveMembers.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "curveMember"))
{
const CPLXMLNode *psChild2 = GetChildElement(psChild);
if (psChild2 != nullptr) // Empty curveMember is valid.
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild2, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (!GML2OGRGeometry_AddToCompositeCurve(
poCC.get(), std::move(poGeom),
bChildrenAreAllLineString))
{
return nullptr;
}
}
}
else if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "curveMembers"))
{
for (const CPLXMLNode *psChild2 = psChild->psChild;
psChild2 != nullptr; psChild2 = psChild2->psNext)
{
if (psChild2->eType == CXT_Element)
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild2, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (!GML2OGRGeometry_AddToCompositeCurve(
poCC.get(), std::move(poGeom),
bChildrenAreAllLineString))
{
return nullptr;
}
}
}
}
}
if (/* bCastToLinearTypeIfPossible && */ bChildrenAreAllLineString)
{
return std::unique_ptr<OGRLineString>(
OGRCurve::CastToLineString(poCC.release()));
}
return poCC;
}
/* -------------------------------------------------------------------- */
/* Curve */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Curve"))
{
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "segments");
if (psChild == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"GML3 Curve geometry lacks segments element.");
return nullptr;
}
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName);
if (poGeom == nullptr || !OGR_GT_IsCurve(poGeom->getGeometryType()))
{
CPLError(
CE_Failure, CPLE_AppDefined,
"Curve: Got %.500s geometry as Member instead of segments.",
poGeom ? poGeom->getGeometryName() : "NULL");
return nullptr;
}
return poGeom;
}
/* -------------------------------------------------------------------- */
/* segments */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "segments"))
{
std::unique_ptr<OGRCurve> poCurve;
std::unique_ptr<OGRCompoundCurve> poCC;
bool bChildrenAreAllLineString = true;
bool bLastCurveWasApproximateArc = false;
bool bLastCurveWasApproximateArcInvertedAxisOrder = false;
double dfLastCurveApproximateArcRadius = 0.0;
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element
// && (EQUAL(BareGMLElement(psChild->pszValue),
// "LineStringSegment") ||
// EQUAL(BareGMLElement(psChild->pszValue),
// "GeodesicString") ||
// EQUAL(BareGMLElement(psChild->pszValue), "Arc") ||
// EQUAL(BareGMLElement(psChild->pszValue), "Circle"))
)
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr ||
!OGR_GT_IsCurve(poGeom->getGeometryType()))
{
CPLError(CE_Failure, CPLE_AppDefined,
"segments: Got %.500s geometry as Member "
"instead of curve.",
poGeom ? poGeom->getGeometryName() : "NULL");
return nullptr;
}
// Ad-hoc logic to handle nicely connecting ArcByCenterPoint
// with consecutive curves, as found in some AIXM files.
bool bIsApproximateArc = false;
if (strcmp(BareGMLElement(psChild->pszValue),
"ArcByCenterPoint") == 0)
{
storeArcByCenterPointParameters(
psChild, pszSRSName, bIsApproximateArc,
dfLastCurveApproximateArcRadius,
bLastCurveWasApproximateArcInvertedAxisOrder);
}
if (wkbFlatten(poGeom->getGeometryType()) != wkbLineString)
bChildrenAreAllLineString = false;
if (poCC == nullptr && poCurve == nullptr)
{
poCurve.reset(poGeom.release()->toCurve());
}
else
{
if (poCC == nullptr)
{
poCC = cpl::make_unique<OGRCompoundCurve>();
if (poCC->addCurve(std::move(poCurve)) != OGRERR_NONE)
{
return nullptr;
}
poCurve.reset();
}
connectArcByCenterPointToOtherSegments(
poGeom.get(), poCC.get(), bIsApproximateArc,
bLastCurveWasApproximateArc,
dfLastCurveApproximateArcRadius,
bLastCurveWasApproximateArcInvertedAxisOrder);
auto poAsCurve =
std::unique_ptr<OGRCurve>(poGeom.release()->toCurve());
if (poCC->addCurve(std::move(poAsCurve)) != OGRERR_NONE)
{
return nullptr;
}
}
bLastCurveWasApproximateArc = bIsApproximateArc;
}
}
if (poCurve != nullptr)
return poCurve;
if (poCC == nullptr)
return nullptr;
if (/* bCastToLinearTypeIfPossible && */ bChildrenAreAllLineString)
{
return std::unique_ptr<OGRLineString>(
OGRCurve::CastToLineString(poCC.release()));
}
return poCC;
}
/* -------------------------------------------------------------------- */
/* MultiGeometry */
/* CAUTION: OGR < 1.8.0 produced GML with GeometryCollection, which is */
/* not a valid GML 2 keyword! The right name is MultiGeometry. Let's be */
/* tolerant with the non compliant files we produced. */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "MultiGeometry") ||
EQUAL(pszBaseGeometry, "GeometryCollection"))
{
auto poGC = cpl::make_unique<OGRGeometryCollection>();
// Collect geoms.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "geometryMember"))
{
const CPLXMLNode *psGeometryChild = GetChildElement(psChild);
if (psGeometryChild != nullptr)
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psGeometryChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"GeometryCollection: Failed to get geometry "
"in geometryMember");
return nullptr;
}
poGC->addGeometry(std::move(poGeom));
}
}
else if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue),
"geometryMembers"))
{
for (const CPLXMLNode *psChild2 = psChild->psChild;
psChild2 != nullptr; psChild2 = psChild2->psNext)
{
if (psChild2->eType == CXT_Element)
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild2, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
CPLError(
CE_Failure, CPLE_AppDefined,
"GeometryCollection: Failed to get geometry "
"in geometryMember");
return nullptr;
}
poGC->addGeometry(std::move(poGeom));
}
}
}
}
return poGC;
}
/* -------------------------------------------------------------------- */
/* Directed Edge */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "directedEdge"))
{
// Collect edge.
const CPLXMLNode *psEdge = FindBareXMLChild(psNode, "Edge");
if (psEdge == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to get Edge element in directedEdge");
return nullptr;
}
// TODO(schwehr): Localize vars after removing gotos.
std::unique_ptr<OGRGeometry> poGeom;
const CPLXMLNode *psNodeElement = nullptr;
const CPLXMLNode *psPointProperty = nullptr;
const CPLXMLNode *psPoint = nullptr;
bool bNodeOrientation = true;
std::unique_ptr<OGRPoint> poPositiveNode;
std::unique_ptr<OGRPoint> poNegativeNode;
const bool bEdgeOrientation = GetElementOrientation(psNode);
if (bGetSecondaryGeometry)
{
const CPLXMLNode *psdirectedNode =
FindBareXMLChild(psEdge, "directedNode");
if (psdirectedNode == nullptr)
goto nonode;
bNodeOrientation = GetElementOrientation(psdirectedNode);
psNodeElement = FindBareXMLChild(psdirectedNode, "Node");
if (psNodeElement == nullptr)
goto nonode;
psPointProperty = FindBareXMLChild(psNodeElement, "pointProperty");
if (psPointProperty == nullptr)
psPointProperty =
FindBareXMLChild(psNodeElement, "connectionPointProperty");
if (psPointProperty == nullptr)
goto nonode;
psPoint = FindBareXMLChild(psPointProperty, "Point");
if (psPoint == nullptr)
psPoint = FindBareXMLChild(psPointProperty, "ConnectionPoint");
if (psPoint == nullptr)
goto nonode;
poGeom = GML2OGRGeometry_XMLNode_Internal(
psPoint, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName, true);
if (poGeom == nullptr ||
wkbFlatten(poGeom->getGeometryType()) != wkbPoint)
{
// CPLError( CE_Failure, CPLE_AppDefined,
// "Got %.500s geometry as Member instead of POINT.",
// poGeom ? poGeom->getGeometryName() : "NULL" );
goto nonode;
}
{
OGRPoint *poPoint = poGeom.release()->toPoint();
if ((bNodeOrientation == bEdgeOrientation) != bOrientation)
poPositiveNode.reset(poPoint);
else
poNegativeNode.reset(poPoint);
}
// Look for the other node.
psdirectedNode = psdirectedNode->psNext;
while (psdirectedNode != nullptr &&
!EQUAL(psdirectedNode->pszValue, "directedNode"))
psdirectedNode = psdirectedNode->psNext;
if (psdirectedNode == nullptr)
goto nonode;
if (GetElementOrientation(psdirectedNode) == bNodeOrientation)
goto nonode;
psNodeElement = FindBareXMLChild(psEdge, "Node");
if (psNodeElement == nullptr)
goto nonode;
psPointProperty = FindBareXMLChild(psNodeElement, "pointProperty");
if (psPointProperty == nullptr)
psPointProperty =
FindBareXMLChild(psNodeElement, "connectionPointProperty");
if (psPointProperty == nullptr)
goto nonode;
psPoint = FindBareXMLChild(psPointProperty, "Point");
if (psPoint == nullptr)
psPoint = FindBareXMLChild(psPointProperty, "ConnectionPoint");
if (psPoint == nullptr)
goto nonode;
poGeom = GML2OGRGeometry_XMLNode_Internal(
psPoint, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName, true);
if (poGeom == nullptr ||
wkbFlatten(poGeom->getGeometryType()) != wkbPoint)
{
// CPLError( CE_Failure, CPLE_AppDefined,
// "Got %.500s geometry as Member instead of POINT.",
// poGeom ? poGeom->getGeometryName() : "NULL" );
goto nonode;
}
{
OGRPoint *poPoint = poGeom.release()->toPoint();
if ((bNodeOrientation == bEdgeOrientation) != bOrientation)
poNegativeNode.reset(poPoint);
else
poPositiveNode.reset(poPoint);
}
{
// Create a scope so that poMP can be initialized with goto
// above and label below.
auto poMP = cpl::make_unique<OGRMultiPoint>();
poMP->addGeometry(std::move(poNegativeNode));
poMP->addGeometry(std::move(poPositiveNode));
return poMP;
}
nonode:;
}
// Collect curveproperty.
const CPLXMLNode *psCurveProperty =
FindBareXMLChild(psEdge, "curveProperty");
if (psCurveProperty == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"directedEdge: Failed to get curveProperty in Edge");
return nullptr;
}
const CPLXMLNode *psCurve =
FindBareXMLChild(psCurveProperty, "LineString");
if (psCurve == nullptr)
psCurve = FindBareXMLChild(psCurveProperty, "Curve");
if (psCurve == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"directedEdge: Failed to get LineString or "
"Curve tag in curveProperty");
return nullptr;
}
auto poLineStringBeforeCast = GML2OGRGeometry_XMLNode_Internal(
psCurve, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName, true);
if (poLineStringBeforeCast == nullptr ||
wkbFlatten(poLineStringBeforeCast->getGeometryType()) !=
wkbLineString)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Got %.500s geometry as Member instead of LINESTRING.",
poLineStringBeforeCast
? poLineStringBeforeCast->getGeometryName()
: "NULL");
return nullptr;
}
auto poLineString = std::unique_ptr<OGRLineString>(
poLineStringBeforeCast.release()->toLineString());
if (bGetSecondaryGeometry)
{
// Choose a point based on the orientation.
poNegativeNode = cpl::make_unique<OGRPoint>();
poPositiveNode = cpl::make_unique<OGRPoint>();
if (bEdgeOrientation == bOrientation)
{
poLineString->StartPoint(poNegativeNode.get());
poLineString->EndPoint(poPositiveNode.get());
}
else
{
poLineString->StartPoint(poPositiveNode.get());
poLineString->EndPoint(poNegativeNode.get());
}
auto poMP = cpl::make_unique<OGRMultiPoint>();
poMP->addGeometry(std::move(poNegativeNode));
poMP->addGeometry(std::move(poPositiveNode));
return poMP;
}
// correct orientation of the line string
if (bEdgeOrientation != bOrientation)
{
int iStartCoord = 0;
int iEndCoord = poLineString->getNumPoints() - 1;
OGRPoint oTempStartPoint;
OGRPoint oTempEndPoint;
while (iStartCoord < iEndCoord)
{
poLineString->getPoint(iStartCoord, &oTempStartPoint);
poLineString->getPoint(iEndCoord, &oTempEndPoint);
poLineString->setPoint(iStartCoord, &oTempEndPoint);
poLineString->setPoint(iEndCoord, &oTempStartPoint);
iStartCoord++;
iEndCoord--;
}
}
return poLineString;
}
/* -------------------------------------------------------------------- */
/* TopoCurve */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "TopoCurve"))
{
std::unique_ptr<OGRMultiLineString> poMLS;
std::unique_ptr<OGRMultiPoint> poMP;
if (bGetSecondaryGeometry)
poMP = cpl::make_unique<OGRMultiPoint>();
else
poMLS = cpl::make_unique<OGRMultiLineString>();
// Collect directedEdges.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "directedEdge"))
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to get geometry in directedEdge");
return nullptr;
}
// Add the two points corresponding to the two nodes to poMP.
if (bGetSecondaryGeometry &&
wkbFlatten(poGeom->getGeometryType()) == wkbMultiPoint)
{
auto poMultiPoint = std::unique_ptr<OGRMultiPoint>(
poGeom.release()->toMultiPoint());
// TODO: TopoCurve geometries with more than one
// directedEdge elements were not tested.
if (poMP->getNumGeometries() <= 0 ||
!(poMP->getGeometryRef(poMP->getNumGeometries() - 1)
->Equals(poMultiPoint->getGeometryRef(0))))
{
poMP->addGeometry(poMultiPoint->getGeometryRef(0));
}
poMP->addGeometry(poMultiPoint->getGeometryRef(1));
}
else if (!bGetSecondaryGeometry &&
wkbFlatten(poGeom->getGeometryType()) == wkbLineString)
{
poMLS->addGeometry(std::move(poGeom));
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Got %.500s geometry as Member instead of %s.",
poGeom->getGeometryName(),
bGetSecondaryGeometry ? "MULTIPOINT"
: "LINESTRING");
return nullptr;
}
}
}
if (bGetSecondaryGeometry)
return poMP;
return poMLS;
}
/* -------------------------------------------------------------------- */
/* TopoSurface */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "TopoSurface"))
{
/****************************************************************/
/* applying the FaceHoleNegative = false rules */
/* */
/* - each <TopoSurface> is expected to represent a MultiPolygon */
/* - each <Face> is expected to represent a distinct Polygon, */
/* this including any possible Interior Ring (holes); */
/* orientation="+/-" plays no role at all to identify "holes" */
/* - each <Edge> within a <Face> may indifferently represent */
/* an element of the Exterior or Interior Boundary; relative */
/* order of <Edges> is absolutely irrelevant. */
/****************************************************************/
/* Contributor: Alessandro Furieri, a.furieri@lqt.it */
/* Developed for Faunalia (http://www.faunalia.it) */
/* with funding from Regione Toscana - */
/* Settore SISTEMA INFORMATIVO TERRITORIALE ED AMBIENTALE */
/****************************************************************/
if (!bFaceHoleNegative)
{
if (bGetSecondaryGeometry)
return nullptr;
#ifndef HAVE_GEOS
static bool bWarningAlreadyEmitted = false;
if (!bWarningAlreadyEmitted)
{
CPLError(
CE_Failure, CPLE_AppDefined,
"Interpreating that GML TopoSurface geometry requires GDAL "
"to be built with GEOS support. As a workaround, you can "
"try defining the GML_FACE_HOLE_NEGATIVE configuration "
"option to YES, so that the 'old' interpretation algorithm "
"is used. But be warned that the result might be "
"incorrect.");
bWarningAlreadyEmitted = true;
}
return nullptr;
#else
auto poTS = cpl::make_unique<OGRMultiPolygon>();
// Collect directed faces.
for (const CPLXMLNode *psChild = psNode->psChild;
psChild != nullptr; psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "directedFace"))
{
// Collect next face (psChild->psChild).
const CPLXMLNode *psFaceChild = GetChildElement(psChild);
while (
psFaceChild != nullptr &&
!(psFaceChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psFaceChild->pszValue), "Face")))
psFaceChild = psFaceChild->psNext;
if (psFaceChild == nullptr)
continue;
auto poCollectedGeom =
cpl::make_unique<OGRMultiLineString>();
// Collect directed edges of the face.
for (const CPLXMLNode *psDirectedEdgeChild =
psFaceChild->psChild;
psDirectedEdgeChild != nullptr;
psDirectedEdgeChild = psDirectedEdgeChild->psNext)
{
if (psDirectedEdgeChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psDirectedEdgeChild->pszValue),
"directedEdge"))
{
auto poEdgeGeom = GML2OGRGeometry_XMLNode_Internal(
psDirectedEdgeChild,
nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName, true);
if (poEdgeGeom == nullptr ||
wkbFlatten(poEdgeGeom->getGeometryType()) !=
wkbLineString)
{
CPLError(
CE_Failure, CPLE_AppDefined,
"Failed to get geometry in directedEdge");
return nullptr;
}
poCollectedGeom->addGeometry(std::move(poEdgeGeom));
}
}
auto poFaceCollectionGeom = std::unique_ptr<OGRGeometry>(
poCollectedGeom->Polygonize());
if (poFaceCollectionGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to assemble Edges in Face");
return nullptr;
}
auto poFaceGeom =
GML2FaceExtRing(poFaceCollectionGeom.get());
if (poFaceGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to build Polygon for Face");
return nullptr;
}
else
{
int iCount = poTS->getNumGeometries();
if (iCount == 0)
{
// Inserting the first Polygon.
poTS->addGeometry(std::move(poFaceGeom));
}
else
{
// Using Union to add the current Polygon.
auto poUnion = std::unique_ptr<OGRGeometry>(
poTS->Union(poFaceGeom.get()));
if (poUnion == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed Union for TopoSurface");
return nullptr;
}
if (wkbFlatten(poUnion->getGeometryType()) ==
wkbPolygon)
{
// Forcing to be a MultiPolygon.
poTS = cpl::make_unique<OGRMultiPolygon>();
poTS->addGeometry(std::move(poUnion));
}
else if (wkbFlatten(poUnion->getGeometryType()) ==
wkbMultiPolygon)
{
poTS.reset(poUnion.release()->toMultiPolygon());
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Unexpected geometry type resulting "
"from Union for TopoSurface");
return nullptr;
}
}
}
}
}
return poTS;
#endif // HAVE_GEOS
}
/****************************************************************/
/* applying the FaceHoleNegative = true rules */
/* */
/* - each <TopoSurface> is expected to represent a MultiPolygon */
/* - any <Face> declaring orientation="+" is expected to */
/* represent an Exterior Ring (no holes are allowed) */
/* - any <Face> declaring orientation="-" is expected to */
/* represent an Interior Ring (hole) belonging to the latest */
/* Exterior Ring. */
/* - <Edges> within the same <Face> are expected to be */
/* arranged in geometrically adjacent and consecutive */
/* sequence. */
/****************************************************************/
if (bGetSecondaryGeometry)
return nullptr;
bool bFaceOrientation = true;
auto poTS = cpl::make_unique<OGRPolygon>();
// Collect directed faces.
for (const CPLXMLNode *psChild = psNode->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "directedFace"))
{
bFaceOrientation = GetElementOrientation(psChild);
// Collect next face (psChild->psChild).
const CPLXMLNode *psFaceChild = GetChildElement(psChild);
while (psFaceChild != nullptr &&
!EQUAL(BareGMLElement(psFaceChild->pszValue), "Face"))
psFaceChild = psFaceChild->psNext;
if (psFaceChild == nullptr)
continue;
auto poFaceGeom = cpl::make_unique<OGRLinearRing>();
// Collect directed edges of the face.
for (const CPLXMLNode *psDirectedEdgeChild =
psFaceChild->psChild;
psDirectedEdgeChild != nullptr;
psDirectedEdgeChild = psDirectedEdgeChild->psNext)
{
if (psDirectedEdgeChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psDirectedEdgeChild->pszValue),
"directedEdge"))
{
auto poEdgeGeom = GML2OGRGeometry_XMLNode_Internal(
psDirectedEdgeChild,
nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName, true,
bFaceOrientation);
if (poEdgeGeom == nullptr ||
wkbFlatten(poEdgeGeom->getGeometryType()) !=
wkbLineString)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to get geometry in directedEdge");
return nullptr;
}
auto poEdgeGeomLS = std::unique_ptr<OGRLineString>(
poEdgeGeom.release()->toLineString());
if (!bFaceOrientation)
{
OGRLineString *poLS = poEdgeGeomLS.get();
OGRLineString *poAddLS = poFaceGeom.get();
// TODO(schwehr): Use AlmostEqual.
const double epsilon = 1.0e-14;
if (poAddLS->getNumPoints() < 2)
{
// Skip it.
}
else if (poLS->getNumPoints() > 0 &&
fabs(poLS->getX(poLS->getNumPoints() - 1) -
poAddLS->getX(0)) < epsilon &&
fabs(poLS->getY(poLS->getNumPoints() - 1) -
poAddLS->getY(0)) < epsilon &&
fabs(poLS->getZ(poLS->getNumPoints() - 1) -
poAddLS->getZ(0)) < epsilon)
{
// Skip the first point of the new linestring to
// avoid invalidate duplicate points.
poLS->addSubLineString(poAddLS, 1);
}
else
{
// Add the whole new line string.
poLS->addSubLineString(poAddLS);
}
poFaceGeom->empty();
}
// TODO(schwehr): Suspicious that poLS overwritten
// without else.
OGRLineString *poLS = poFaceGeom.get();
OGRLineString *poAddLS = poEdgeGeomLS.get();
if (poAddLS->getNumPoints() < 2)
{
// Skip it.
}
else if (poLS->getNumPoints() > 0 &&
fabs(poLS->getX(poLS->getNumPoints() - 1) -
poAddLS->getX(0)) < 1e-14 &&
fabs(poLS->getY(poLS->getNumPoints() - 1) -
poAddLS->getY(0)) < 1e-14 &&
fabs(poLS->getZ(poLS->getNumPoints() - 1) -
poAddLS->getZ(0)) < 1e-14)
{
// Skip the first point of the new linestring to
// avoid invalidate duplicate points.
poLS->addSubLineString(poAddLS, 1);
}
else
{
// Add the whole new line string.
poLS->addSubLineString(poAddLS);
}
}
}
// if( poFaceGeom == NULL )
// {
// CPLError( CE_Failure, CPLE_AppDefined,
// "Failed to get Face geometry in directedFace"
// );
// delete poFaceGeom;
// return NULL;
// }
poTS->addRing(std::move(poFaceGeom));
}
}
// if( poTS == NULL )
// {
// CPLError( CE_Failure, CPLE_AppDefined,
// "Failed to get TopoSurface geometry" );
// delete poTS;
// return NULL;
// }
return poTS;
}
/* -------------------------------------------------------------------- */
/* Surface */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Surface") ||
EQUAL(pszBaseGeometry, "ElevatedSurface") /* AIXM */)
{
// Find outer ring.
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "patches");
if (psChild == nullptr)
psChild = FindBareXMLChild(psNode, "polygonPatches");
if (psChild == nullptr)
psChild = FindBareXMLChild(psNode, "trianglePatches");
psChild = GetChildElement(psChild);
if (psChild == nullptr)
{
// <gml:Surface/> and <gml:Surface><gml:patches/></gml:Surface> are
// valid GML.
return cpl::make_unique<OGRPolygon>();
}
OGRMultiSurface *poMSPtr = nullptr;
std::unique_ptr<OGRGeometry> poResultPoly;
std::unique_ptr<OGRGeometry> poResultTri;
OGRTriangulatedSurface *poTINPtr = nullptr;
for (; psChild != nullptr; psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
(EQUAL(BareGMLElement(psChild->pszValue), "PolygonPatch") ||
EQUAL(BareGMLElement(psChild->pszValue), "Rectangle")))
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
return nullptr;
}
const OGRwkbGeometryType eGeomType =
wkbFlatten(poGeom->getGeometryType());
if (poResultPoly == nullptr)
poResultPoly = std::move(poGeom);
else
{
if (poMSPtr == nullptr)
{
std::unique_ptr<OGRMultiSurface> poMS;
if (wkbFlatten(poResultPoly->getGeometryType()) ==
wkbPolygon &&
eGeomType == wkbPolygon)
poMS = cpl::make_unique<OGRMultiPolygon>();
else
poMS = cpl::make_unique<OGRMultiSurface>();
OGRErr eErr =
poMS->addGeometry(std::move(poResultPoly));
CPL_IGNORE_RET_VAL(eErr);
CPLAssert(eErr == OGRERR_NONE);
poResultPoly = std::move(poMS);
poMSPtr = cpl::down_cast<OGRMultiSurface *>(
poResultPoly.get());
}
else if (eGeomType != wkbPolygon &&
wkbFlatten(poResultPoly->getGeometryType()) ==
wkbMultiPolygon)
{
OGRMultiPolygon *poMultiPoly =
poResultPoly.release()->toMultiPolygon();
poResultPoly.reset(
OGRMultiPolygon::CastToMultiSurface(poMultiPoly));
poMSPtr = cpl::down_cast<OGRMultiSurface *>(
poResultPoly.get());
}
OGRErr eErr = poMSPtr->addGeometry(std::move(poGeom));
CPL_IGNORE_RET_VAL(eErr);
CPLAssert(eErr == OGRERR_NONE);
}
}
else if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "Triangle"))
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
return nullptr;
}
if (poResultTri == nullptr)
poResultTri = std::move(poGeom);
else
{
if (poTINPtr == nullptr)
{
auto poTIN = cpl::make_unique<OGRTriangulatedSurface>();
OGRErr eErr =
poTIN->addGeometry(std::move(poResultTri));
CPL_IGNORE_RET_VAL(eErr);
CPLAssert(eErr == OGRERR_NONE);
poResultTri = std::move(poTIN);
poTINPtr = cpl::down_cast<OGRTriangulatedSurface *>(
poResultTri.get());
}
OGRErr eErr = poTINPtr->addGeometry(std::move(poGeom));
CPL_IGNORE_RET_VAL(eErr);
CPLAssert(eErr == OGRERR_NONE);
}
}
}
if (poResultTri == nullptr && poResultPoly == nullptr)
return nullptr;
if (poResultTri == nullptr)
return poResultPoly;
else if (poResultPoly == nullptr)
return poResultTri;
else
{
auto poGC = cpl::make_unique<OGRGeometryCollection>();
poGC->addGeometry(std::move(poResultTri));
poGC->addGeometry(std::move(poResultPoly));
return poGC;
}
}
/* -------------------------------------------------------------------- */
/* TriangulatedSurface */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "TriangulatedSurface") ||
EQUAL(pszBaseGeometry, "Tin"))
{
// Find trianglePatches.
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "trianglePatches");
if (psChild == nullptr)
psChild = FindBareXMLChild(psNode, "patches");
psChild = GetChildElement(psChild);
if (psChild == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing <trianglePatches> for %s.", pszBaseGeometry);
return nullptr;
}
auto poTIN = cpl::make_unique<OGRTriangulatedSurface>();
for (; psChild != nullptr; psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "Triangle"))
{
auto poTriangle = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poTriangle == nullptr)
{
return nullptr;
}
else
{
poTIN->addGeometry(std::move(poTriangle));
}
}
}
return poTIN;
}
/* -------------------------------------------------------------------- */
/* PolyhedralSurface */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "PolyhedralSurface"))
{
// Find polygonPatches.
const CPLXMLNode *psParent = FindBareXMLChild(psNode, "polygonPatches");
if (psParent == nullptr)
{
if (GetChildElement(psNode) == nullptr)
{
// This is empty PolyhedralSurface.
return cpl::make_unique<OGRPolyhedralSurface>();
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing <polygonPatches> for %s.", pszBaseGeometry);
return nullptr;
}
}
const CPLXMLNode *psChild = GetChildElement(psParent);
if (psChild == nullptr)
{
// This is empty PolyhedralSurface.
return cpl::make_unique<OGRPolyhedralSurface>();
}
else if (!EQUAL(BareGMLElement(psChild->pszValue), "PolygonPatch"))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing <PolygonPatch> for %s.", pszBaseGeometry);
return nullptr;
}
// Each psParent has the tags corresponding to <gml:polygonPatches>
// Each psChild has the tags corresponding to <gml:PolygonPatch>
// Each PolygonPatch has a set of polygons enclosed in a
// OGRPolyhedralSurface.
auto poGC = cpl::make_unique<OGRGeometryCollection>();
for (; psParent != nullptr; psParent = psParent->psNext)
{
psChild = GetChildElement(psParent);
if (psChild == nullptr)
continue;
auto poPS = cpl::make_unique<OGRPolyhedralSurface>();
for (; psChild != nullptr; psChild = psChild->psNext)
{
if (psChild->eType == CXT_Element &&
EQUAL(BareGMLElement(psChild->pszValue), "PolygonPatch"))
{
auto poPolygon = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poPolygon == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong geometry type for %s.",
pszBaseGeometry);
return nullptr;
}
else if (wkbFlatten(poPolygon->getGeometryType()) ==
wkbPolygon)
{
poPS->addGeometry(std::move(poPolygon));
}
else if (wkbFlatten(poPolygon->getGeometryType()) ==
wkbCurvePolygon)
{
poPS->addGeometryDirectly(
OGRGeometryFactory::forceToPolygon(
poPolygon.release()));
}
else
{
CPLError(CE_Failure, CPLE_AppDefined,
"Wrong geometry type for %s.",
pszBaseGeometry);
return nullptr;
}
}
}
poGC->addGeometry(std::move(poPS));
}
if (poGC->getNumGeometries() == 0)
{
return nullptr;
}
else if (poGC->getNumGeometries() == 1)
{
auto poResult =
std::unique_ptr<OGRGeometry>(poGC->getGeometryRef(0));
poGC->removeGeometry(0, FALSE);
return poResult;
}
else
{
return poGC;
}
}
/* -------------------------------------------------------------------- */
/* Solid */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "Solid"))
{
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "interior");
if (psChild != nullptr)
{
static bool bWarnedOnce = false;
if (!bWarnedOnce)
{
CPLError(CE_Warning, CPLE_AppDefined,
"<interior> elements of <Solid> are ignored");
bWarnedOnce = true;
}
}
// Find exterior element.
psChild = FindBareXMLChild(psNode, "exterior");
if (nSRSDimension == 0)
nSRSDimension = 3;
psChild = GetChildElement(psChild);
if (psChild == nullptr)
{
// <gml:Solid/> and <gml:Solid><gml:exterior/></gml:Solid> are valid
// GML.
return cpl::make_unique<OGRPolyhedralSurface>();
}
if (EQUAL(BareGMLElement(psChild->pszValue), "CompositeSurface"))
{
auto poPS = cpl::make_unique<OGRPolyhedralSurface>();
// Iterate over children.
for (psChild = psChild->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
const char *pszMemberElement =
BareGMLElement(psChild->pszValue);
if (psChild->eType == CXT_Element &&
(EQUAL(pszMemberElement, "polygonMember") ||
EQUAL(pszMemberElement, "surfaceMember")))
{
const CPLXMLNode *psSurfaceChild = GetChildElement(psChild);
if (psSurfaceChild != nullptr)
{
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psSurfaceChild,
nPseudoBoolGetSecondaryGeometryOption,
nRecLevel + 1, nSRSDimension, pszSRSName);
if (poGeom != nullptr &&
wkbFlatten(poGeom->getGeometryType()) == wkbPolygon)
{
poPS->addGeometry(std::move(poGeom));
}
}
}
}
return poPS;
}
// Get the geometry inside <exterior>.
auto poGeom = GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName);
if (poGeom == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined, "Invalid exterior element");
return nullptr;
}
return poGeom;
}
/* -------------------------------------------------------------------- */
/* OrientableSurface */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "OrientableSurface"))
{
// Find baseSurface.
const CPLXMLNode *psChild = FindBareXMLChild(psNode, "baseSurface");
psChild = GetChildElement(psChild);
if (psChild == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Missing <baseSurface> for OrientableSurface.");
return nullptr;
}
return GML2OGRGeometry_XMLNode_Internal(
psChild, nPseudoBoolGetSecondaryGeometryOption, nRecLevel + 1,
nSRSDimension, pszSRSName);
}
/* -------------------------------------------------------------------- */
/* SimplePolygon, SimpleRectangle, SimpleTriangle */
/* (GML 3.3 compact encoding) */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "SimplePolygon") ||
EQUAL(pszBaseGeometry, "SimpleRectangle"))
{
auto poRing = cpl::make_unique<OGRLinearRing>();
if (!ParseGMLCoordinates(psNode, poRing.get(), nSRSDimension))
{
return nullptr;
}
poRing->closeRings();
auto poPolygon = cpl::make_unique<OGRPolygon>();
poPolygon->addRing(std::move(poRing));
return poPolygon;
}
if (EQUAL(pszBaseGeometry, "SimpleTriangle"))
{
auto poRing = cpl::make_unique<OGRLinearRing>();
if (!ParseGMLCoordinates(psNode, poRing.get(), nSRSDimension))
{
return nullptr;
}
poRing->closeRings();
auto poTriangle = cpl::make_unique<OGRTriangle>();
poTriangle->addRing(std::move(poRing));
return poTriangle;
}
/* -------------------------------------------------------------------- */
/* SimpleMultiPoint (GML 3.3 compact encoding) */
/* -------------------------------------------------------------------- */
if (EQUAL(pszBaseGeometry, "SimpleMultiPoint"))
{
auto poLS = cpl::make_unique<OGRLineString>();
if (!ParseGMLCoordinates(psNode, poLS.get(), nSRSDimension))
{
return nullptr;
}
auto poMP = cpl::make_unique<OGRMultiPoint>();
int nPoints = poLS->getNumPoints();
for (int i = 0; i < nPoints; i++)
{
auto poPoint = cpl::make_unique<OGRPoint>();
poLS->getPoint(i, poPoint.get());
poMP->addGeometry(std::move(poPoint));
}
return poMP;
}
if (strcmp(pszBaseGeometry, "null") == 0)
{
return nullptr;
}
CPLError(CE_Failure, CPLE_AppDefined,
"Unrecognized geometry type <%.500s>.", pszBaseGeometry);
return nullptr;
}
/************************************************************************/
/* OGR_G_CreateFromGMLTree() */
/************************************************************************/
/** Create geometry from GML */
OGRGeometryH OGR_G_CreateFromGMLTree(const CPLXMLNode *psTree)
{
return OGRGeometry::ToHandle(GML2OGRGeometry_XMLNode(psTree, -1));
}
/************************************************************************/
/* OGR_G_CreateFromGML() */
/************************************************************************/
/**
* \brief Create geometry from GML.
*
* This method translates a fragment of GML containing only the geometry
* portion into a corresponding OGRGeometry. There are many limitations
* on the forms of GML geometries supported by this parser, but they are
* too numerous to list here.
*
* The following GML2 elements are parsed : Point, LineString, Polygon,
* MultiPoint, MultiLineString, MultiPolygon, MultiGeometry.
*
* (OGR >= 1.8.0) The following GML3 elements are parsed : Surface,
* MultiSurface, PolygonPatch, Triangle, Rectangle, Curve, MultiCurve,
* CompositeCurve, LineStringSegment, Arc, Circle, CompositeSurface,
* OrientableSurface, Solid, Tin, TriangulatedSurface.
*
* Arc and Circle elements are stroked to linestring, by using a
* 4 degrees step, unless the user has overridden the value with the
* OGR_ARC_STEPSIZE configuration variable.
*
* The C++ method OGRGeometryFactory::createFromGML() is the same as
* this function.
*
* @param pszGML The GML fragment for the geometry.
*
* @return a geometry on success, or NULL on error.
*/
OGRGeometryH OGR_G_CreateFromGML(const char *pszGML)
{
if (pszGML == nullptr || strlen(pszGML) == 0)
{
CPLError(CE_Failure, CPLE_AppDefined,
"GML Geometry is empty in OGR_G_CreateFromGML().");
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Try to parse the XML snippet using the MiniXML API. If this */
/* fails, we assume the minixml api has already posted a CPL */
/* error, and just return NULL. */
/* -------------------------------------------------------------------- */
CPLXMLNode *psGML = CPLParseXMLString(pszGML);
if (psGML == nullptr)
return nullptr;
/* -------------------------------------------------------------------- */
/* Convert geometry recursively. */
/* -------------------------------------------------------------------- */
// Must be in synced in OGR_G_CreateFromGML(), OGRGMLLayer::OGRGMLLayer()
// and GMLReader::GMLReader().
const bool bFaceHoleNegative =
CPLTestBool(CPLGetConfigOption("GML_FACE_HOLE_NEGATIVE", "NO"));
OGRGeometry *poGeometry = GML2OGRGeometry_XMLNode(psGML, -1, 0, 0, false,
true, bFaceHoleNegative);
CPLDestroyXMLNode(psGML);
return OGRGeometry::ToHandle(poGeometry);
}
Reference in New Issue View Git Blame Copy Permalink