void TestQgsGeometrySnapper::snapPointToLine()
{
QgsVectorLayer* rl = new QgsVectorLayer( QStringLiteral( "Linestring" ), QStringLiteral( "x" ), QStringLiteral( "memory" ) );
// closed linestring
QgsGeometry refGeom = QgsGeometry::fromWkt( QStringLiteral( "LineString(0 0, 10 0, 10 10, 0 10, 0 0)" ) );
QgsFeature ff( 0 );
ff.setGeometry( refGeom );
QgsFeatureList flist;
flist << ff;
rl->dataProvider()->addFeatures( flist );
QgsGeometry pointGeom = QgsGeometry::fromWkt( QStringLiteral( "Point(0.1 -0.1)" ) );
QgsGeometrySnapper snapper( rl );
QgsGeometry result = snapper.snapGeometry( pointGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Point (0 0)" ) );
pointGeom = QgsGeometry::fromWkt( QStringLiteral( "Point(10.6 -0.1)" ) );
result = snapper.snapGeometry( pointGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Point (10 0)" ) );
pointGeom = QgsGeometry::fromWkt( QStringLiteral( "Point(0.5 0.5)" ) );
result = snapper.snapGeometry( pointGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Point (0 0)" ) );
}
void TestQgsGeometrySnapper::snapPolygonToPolygon()
{
QgsVectorLayer* rl = new QgsVectorLayer( QStringLiteral( "Polygon" ), QStringLiteral( "x" ), QStringLiteral( "memory" ) );
QgsFeature ff( 0 );
QgsGeometry refGeom = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0 0, 10 0, 10 10, 0 10, 0 0))" ) );
ff.setGeometry( refGeom );
QgsFeatureList flist;
flist << ff;
rl->dataProvider()->addFeatures( flist );
QgsGeometry polygonGeom = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 10.1 0, 9.9 10.1, 0 10, 0.1 -0.1))" ) );
QgsGeometrySnapper snapper( rl );
QgsGeometry result = snapper.snapGeometry( polygonGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 10 10, 0 10, 0 0))" ) );
QgsGeometry polygonGeom2 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 10.1 0, 0 10, 0.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom2, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 0 10, 0 0))" ) );
// insert new vertex
QgsGeometry polygonGeom3 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 20.5 0.5, 20 10, 0 9.9, 0.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom3, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 20.5 0.5, 20 10, 10 10, 0 10, 0 0))" ) );
// remove vertex
QgsGeometry polygonGeom4 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 10.1 0, 9.9 10.1, 5 10, 0 10, 0.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom4, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 10 10, 0 10, 0 0))" ) );
}
void TestQgsGeometrySnapper::snapLineToPoint()
{
QgsVectorLayer* rl = new QgsVectorLayer( QStringLiteral( "Point" ), QStringLiteral( "x" ), QStringLiteral( "memory" ) );
QgsGeometry refGeom = QgsGeometry::fromWkt( QStringLiteral( "Point(0 0)" ) );
QgsFeature ff( 0 );
ff.setGeometry( refGeom );
QgsGeometry refGeom2 = QgsGeometry::fromWkt( QStringLiteral( "Point(10 0)" ) );
QgsFeature ff2( 2 );
ff2.setGeometry( refGeom2 );
QgsFeatureList flist;
flist << ff << ff2;
rl->dataProvider()->addFeatures( flist );
QgsGeometry lineGeom = QgsGeometry::fromWkt( QStringLiteral( "LineString(0.1 -0.1, 10.1 0, 10 10, 0 10)" ) );
QgsGeometrySnapper snapper( rl );
QgsGeometry result = snapper.snapGeometry( lineGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "LineString (0 0, 10 0, 10 10, 0 10)" ) );
QgsGeometry lineGeom2 = QgsGeometry::fromWkt( QStringLiteral( "LineString(0.1 -0.1, 10.1 0, 0 10)" ) );
result = snapper.snapGeometry( lineGeom2, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "LineString (0 0, 10 0, 0 10)" ) );
// insert new vertex
QgsGeometry lineGeom3 = QgsGeometry::fromWkt( QStringLiteral( "LineString(0.1 -0.1, 20.0 0.0, 20 10, 0 10)" ) );
result = snapper.snapGeometry( lineGeom3, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "LineString (0 0, 10 0, 20 0, 20 10, 0 10)" ) );
}
void TestQgsGeometrySnapper::snapPolygonToLine()
{
QgsVectorLayer* rl = new QgsVectorLayer( QStringLiteral( "Linestring" ), QStringLiteral( "x" ), QStringLiteral( "memory" ) );
// closed linestring
QgsGeometry refGeom = QgsGeometry::fromWkt( QStringLiteral( "LineString(0 0, 10 0, 10 10, 0 10, 0 0)" ) );
QgsFeature ff( 0 );
ff.setGeometry( refGeom );
// unclosed linestring
QgsGeometry refGeom2 = QgsGeometry::fromWkt( QStringLiteral( "LineString(100 0, 110 0, 110 10, 100 10)" ) );
QgsFeature ff2( 2 );
ff2.setGeometry( refGeom2 );
QgsFeatureList flist;
flist << ff << ff2;
rl->dataProvider()->addFeatures( flist );
// snapping to closed linestring
QgsGeometry polygonGeom = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 10.1 0, 9.9 10.1, 0 10, 0.1 -0.1))" ) );
QgsGeometrySnapper snapper( rl );
QgsGeometry result = snapper.snapGeometry( polygonGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 10 10, 0 10, 0 0))" ) );
QgsGeometry polygonGeom2 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 10.1 0, 0 10, 0.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom2, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 0 10, 0 0))" ) );
// insert new vertex
QgsGeometry polygonGeom3 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 20.5 0.5, 20 10, 0 9.9, 0.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom3, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 20.5 0.5, 20 10, 10 10, 0 10, 0 0))" ) );
// remove vertex
QgsGeometry polygonGeom4 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((0.1 -0.1, 10.1 0, 9.9 10.1, 5 10, 0 10, 0.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom4, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((0 0, 10 0, 10 10, 0 10, 0 0))" ) );
// snapping to unclosed linestring
QgsGeometry polygonGeom5 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((100.1 -0.1, 110.1 0, 109.9 10.1, 100 10, 100.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom5, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((100 0, 110 0, 110 10, 100 10, 100 0))" ) );
QgsGeometry polygonGeom6 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((100.1 -0.1, 110.1 0, 100 10, 100.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom6, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((100 0, 110 0, 100 10, 100 0))" ) );
// insert new vertex
QgsGeometry polygonGeom7 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((100.1 -0.1, 120.5 0.5, 120 10, 100 9.9, 100.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom7, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((100 0, 110 0, 120.5 0.5, 120 10, 110 10, 100 10, 100 0))" ) );
// remove vertex
QgsGeometry polygonGeom8 = QgsGeometry::fromWkt( QStringLiteral( "Polygon((100.1 -0.1, 110.1 0, 109.9 10.1, 105 10, 100 10, 100.1 -0.1))" ) );
result = snapper.snapGeometry( polygonGeom8, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Polygon ((100 0, 110 0, 110 10, 100 10, 100 0))" ) );
}
void QgsMapToolOffsetCurve::canvasPressEvent( QMouseEvent* e )
{
deleteRubberBandAndGeometry();
mGeometryModified = false;
mForceCopy = false;
if ( !mCanvas )
{
return;
}
//get selected features or snap to nearest feature if no selection
QgsVectorLayer* layer = currentVectorLayer();
if ( !layer )
{
notifyNotVectorLayer();
return;
}
QgsMapRenderer* renderer = mCanvas->mapRenderer();
QgsSnapper snapper( renderer );
configureSnapper( snapper );
QList<QgsSnappingResult> snapResults;
snapper.snapPoint( e->pos(), snapResults );
if ( snapResults.size() > 0 )
{
QgsFeature fet;
const QgsSnappingResult& snapResult = snapResults.at( 0 );
if ( snapResult.layer )
{
mSourceLayerId = snapResult.layer->id();
QgsVectorLayer* vl = dynamic_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( mSourceLayerId ) );
if ( vl && vl->getFeatures( QgsFeatureRequest().setFilterFid( snapResult.snappedAtGeometry ) ).nextFeature( fet ) )
{
mForceCopy = ( e->modifiers() & Qt::ControlModifier ); //no geometry modification if ctrl is pressed
mOriginalGeometry = createOriginGeometry( vl, snapResult, fet );
mRubberBand = createRubberBand();
if ( mRubberBand )
{
mRubberBand->setToGeometry( mOriginalGeometry, layer );
}
mModifiedFeature = fet.id();
createDistanceItem();
}
}
}
}
void object::test<2>()
{
GeomAutoPtr src(reader.read(
"POLYGON ((0 0, 0 100, 100 100, 100 0, 0 0))"
));
GeometrySnapper snapper( *(src.get()) );
GeomAutoPtr snap(reader.read(
"MULTIPOINT ((0.0000001 50))"
));
GeomAutoPtr expected(reader.read(
"POLYGON ((0 0, 0.0000001 50, 0 100, 100 100, 100 0, 0 0))"
));
GeomAutoPtr ret(snapper.snapTo( *(snap.get()), 0.000001 ));
ensure( ret->equalsExact(expected.get(),0) );
}
void QgsMapCoordsDialog::maybeSetXY( const QgsPoint & xy, Qt::MouseButton button )
{
// Only LeftButton should set point
if ( Qt::LeftButton == button )
{
QgsPoint mapCoordPoint = xy;
if ( mQgisCanvas && mSnapToBackgroundLayerBox->isChecked() )
{
const QgsMapToPixel* mtp = mQgisCanvas->getCoordinateTransform();
if ( mtp )
{
QgsPoint canvasPos = mtp->transform( xy.x(), xy.y() );
QPoint snapStartPoint( canvasPos.x(), canvasPos.y() );
QgsMapCanvasSnapper snapper( mQgisCanvas );
QList<QgsSnappingResult> snapResults;
if ( snapper.snapToBackgroundLayers( snapStartPoint, snapResults ) == 0 )
{
if ( snapResults.size() > 0 )
{
mapCoordPoint = snapResults.at( 0 ).snappedVertex;
}
}
}
}
leXCoord->clear();
leYCoord->clear();
leXCoord->setText( qgsDoubleToString( mapCoordPoint.x() ) );
leYCoord->setText( qgsDoubleToString( mapCoordPoint.y() ) );
}
parentWidget()->showNormal();
parentWidget()->activateWindow();
parentWidget()->raise();
mPointFromCanvasPushButton->setChecked( false );
buttonBox->button( QDialogButtonBox::Ok )->setFocus();
activateWindow();
raise();
}
void TestQgsGeometrySnapper::snapPointToPoint()
{
QgsVectorLayer* rl = new QgsVectorLayer( QStringLiteral( "Point" ), QStringLiteral( "x" ), QStringLiteral( "memory" ) );
QgsGeometry refGeom = QgsGeometry::fromWkt( QStringLiteral( "Point(0 0)" ) );
QgsFeature ff( 0 );
ff.setGeometry( refGeom );
QgsGeometry refGeom2 = QgsGeometry::fromWkt( QStringLiteral( "Point(1 0)" ) );
QgsFeature ff2( 2 );
ff2.setGeometry( refGeom2 );
QgsFeatureList flist;
flist << ff << ff2;
rl->dataProvider()->addFeatures( flist );
QgsGeometry pointGeom = QgsGeometry::fromWkt( QStringLiteral( "Point(0.1 -0.1)" ) );
QgsGeometrySnapper snapper( rl );
QgsGeometry result = snapper.snapGeometry( pointGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Point (0 0)" ) );
pointGeom = QgsGeometry::fromWkt( QStringLiteral( "Point(0.6 -0.1)" ) );
result = snapper.snapGeometry( pointGeom, 1 );
QCOMPARE( result.exportToWkt(), QStringLiteral( "Point (1 0)" ) );
}
void CurveEditInstance::snapto(float snap) {
ControlPointSnapper snapper(snap);
forEachSelected(snapper);
}
