QgsAbstractGeometryV2* QgsGeometryImport::fromMultiPolygon( const QgsMultiPolygon& multipoly )
{
QgsMultiPolygonV2* mp = new QgsMultiPolygonV2();
for ( int i = 0; i < multipoly.size(); ++i )
{
mp->addGeometry( fromPolygon( multipoly.at( i ) ) );
}
return mp;
}
void TestQgsGeometryUtils::testExtractLinestrings()
{
QgsLineString* outerRing1 = new QgsLineString();
outerRing1->setPoints( QList<QgsPointV2>() << QgsPointV2( 1, 1 ) << QgsPointV2( 1, 2 ) << QgsPointV2( 2, 2 ) << QgsPointV2( 2, 1 ) << QgsPointV2( 1, 1 ) );
QgsPolygonV2* polygon1 = new QgsPolygonV2();
polygon1->setExteriorRing( outerRing1 );
QgsLineString* outerRing2 = new QgsLineString();
outerRing2->setPoints( QList<QgsPointV2>() << QgsPointV2( 10, 10 ) << QgsPointV2( 10, 20 ) << QgsPointV2( 20, 20 ) << QgsPointV2( 20, 10 ) << QgsPointV2( 10, 10 ) );
QgsPolygonV2* polygon2 = new QgsPolygonV2();
polygon2->setExteriorRing( outerRing2 );
QgsLineString* innerRing2 = new QgsLineString();
innerRing2->setPoints( QList<QgsPointV2>() << QgsPointV2( 14, 14 ) << QgsPointV2( 14, 16 ) << QgsPointV2( 16, 16 ) << QgsPointV2( 16, 14 ) << QgsPointV2( 14, 14 ) );
polygon2->setInteriorRings( QList<QgsCurve*>() << innerRing2 );
QgsMultiPolygonV2 mpg;
mpg.addGeometry( polygon1 );
mpg.addGeometry( polygon2 );
QList<QgsLineString*> linestrings = QgsGeometryUtils::extractLineStrings( &mpg );
QCOMPARE( linestrings.count(), 3 );
qDeleteAll( linestrings );
}
