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Fix reshape when snapping to segment

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This commit is contained in:
uclaros 2025-06-17 17:06:46 +03:00 committed by github-actions[bot]
parent eb8bc81630
commit 823808680a
2 changed files with 43 additions and 1 deletions
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12
src/core/geometry/qgsgeometry.cpp
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@ -1241,7 +1241,17 @@ Qgis::GeometryOperationResult QgsGeometry::reshapeGeometry( const QgsLineString
return Qgis::GeometryOperationResult::InvalidBaseGeometry;
}
QgsGeos geos( d->geometry.get() );
// We're trying adding the reshape line's vertices to the geometry so that
// snap to segment always produces a valid reshape
QgsPointSequence reshapePoints;
reshapeLineString.points( reshapePoints );
QgsGeometry tmpGeom( *this );
for ( const QgsPoint &v : std::as_const( reshapePoints ) )
{
tmpGeom.addTopologicalPoint( v );
}
QgsGeos geos( tmpGeom.get() );
QgsGeometryEngine::EngineOperationResult errorCode = QgsGeometryEngine::Success;
mLastError.clear();
std::unique_ptr< QgsAbstractGeometry > geom( geos.reshapeGeometry( reshapeLineString, &errorCode, &mLastError ) );

32
tests/src/app/testqgsmaptoolreshape.cpp
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@ -50,6 +50,7 @@ class TestQgsMapToolReshape : public QObject
void reshapeWithBindingLine();
void testWithTracing();
void testKeepDirection();
void testWithSnapToSegment();
private:
QgisApp *mQgisApp = nullptr;
@ -531,11 +532,42 @@ void TestQgsMapToolReshape::testKeepDirection()
QString wkt3 = QStringLiteral( "LineString (13 1, 12 1, 12 3, 13 3, 14 3, 14 5, 13 5, 12 5, 12 7, 13 7, 13 8, 19 11, 25 8, 25 0, 13 0, 13 1)" );
QCOMPARE( mLayerLine->getFeature( 3 ).geometry().asWkt(), wkt3 );
// undo the three changes
mLayerLine->undoStack()->undo();
mLayerLine->undoStack()->undo();
mLayerLine->undoStack()->undo();
// activate back snapping
cfg.setEnabled( true );
mCanvas->snappingUtils()->setConfig( cfg );
}
void TestQgsMapToolReshape::testWithSnapToSegment()
{
TestQgsMapToolAdvancedDigitizingUtils utils( mCaptureTool );
mCanvas->setLayers( { mLayerPolygonZ } );
mCanvas->setCurrentLayer( mLayerPolygonZ );
mCanvas->setDestinationCrs( mLayerPolygonZ->crs() );
QgsSnappingConfig cfg = mCanvas->snappingUtils()->config();
cfg.setTypeFlag( static_cast<Qgis::SnappingTypes>( Qgis::SnappingType::Segment ) );
mCanvas->snappingUtils()->setConfig( cfg );
QCOMPARE( mLayerPolygonZ->getFeature( 1 ).geometry().asWkt(), QStringLiteral( "Polygon Z ((7 5 4, 3 2 1, 0 1 2, 7 5 4))" ) );
// snap to segment on a diagonal
utils.mouseClick( 5.5, 4.5, Qt::LeftButton, {}, true );
utils.mouseClick( 1, 5, Qt::LeftButton );
utils.mouseClick( 1, 2, Qt::LeftButton, {}, true );
utils.mouseClick( 1, 2, Qt::RightButton );
QCOMPARE( mLayerPolygonZ->getFeature( 1 ).geometry().asWkt( 1 ), QStringLiteral( "Polygon Z ((1.2 1.7 333, 1 5 333, 5.7 4.2 333, 7 5 4, 3 2 1, 0 1 2, 1.2 1.7 333))" ) );
mLayerLine->undoStack()->undo();
cfg.setTypeFlag( static_cast<Qgis::SnappingTypes>( Qgis::SnappingType::Vertex | Qgis::SnappingType::Segment ) );
mCanvas->snappingUtils()->setConfig( cfg );
}
QGSTEST_MAIN( TestQgsMapToolReshape )
#include "testqgsmaptoolreshape.moc"