bool QgsLineStringV2::moveVertex( const QgsVertexId& position, const QgsPointV2& newPos )
{
if ( position.vertex < 0 || position.vertex >= mCoords.size() )
{
return false;
}
mCoords[position.vertex].rx() = newPos.x();
mCoords[position.vertex].ry() = newPos.y();
if ( is3D() && newPos.is3D() )
{
mZ[position.vertex] = newPos.z();
}
if ( isMeasure() && newPos.isMeasure() )
{
mM[position.vertex] = newPos.m();
}
mBoundingBox = QgsRectangle(); //set bounding box invalid
return true;
}
bool QgsCircularString::moveVertex( QgsVertexId position, const QgsPointV2 &newPos )
{
if ( position.vertex < 0 || position.vertex >= mX.size() )
{
return false;
}
mX[position.vertex] = newPos.x();
mY[position.vertex] = newPos.y();
if ( is3D() && newPos.is3D() )
{
mZ[position.vertex] = newPos.z();
}
if ( isMeasure() && newPos.isMeasure() )
{
mM[position.vertex] = newPos.m();
}
clearCache(); //set bounding box invalid
return true;
}
void QgsGeometryRubberBand::paint( QPainter* painter )
{
if ( !mGeometry || !painter )
{
return;
}
painter->save();
painter->translate( -pos() );
if ( mGeometryType == QGis::Polygon )
{
painter->setBrush( mBrush );
}
else
{
painter->setBrush( Qt::NoBrush );
}
painter->setPen( mPen );
QgsAbstractGeometryV2* paintGeom = mGeometry->clone();
paintGeom->transform( mMapCanvas->getCoordinateTransform()->transform() );
paintGeom->draw( *painter );
//draw vertices
QgsVertexId vertexId;
QgsPointV2 vertex;
while ( paintGeom->nextVertex( vertexId, vertex ) )
{
drawVertex( painter, vertex.x(), vertex.y() );
}
delete paintGeom;
painter->restore();
}
bool QgsSnapIndex::SegmentSnapItem::getIntersection( const QgsPointV2 &p1, const QgsPointV2 &p2, QgsPointV2& inter ) const
{
const QgsPointV2& q1 = idxFrom->point(), & q2 = idxTo->point();
QgsVector v( p2.x() - p1.x(), p2.y() - p1.y() );
QgsVector w( q2.x() - q1.x(), q2.y() - q1.y() );
double vl = v.length();
double wl = w.length();
if ( qFuzzyIsNull( vl ) || qFuzzyIsNull( wl ) )
{
return false;
}
v = v / vl;
w = w / wl;
double d = v.y() * w.x() - v.x() * w.y();
if ( d == 0 )
return false;
double dx = q1.x() - p1.x();
double dy = q1.y() - p1.y();
double k = ( dy * w.x() - dx * w.y() ) / d;
inter = QgsPointV2( p1.x() + v.x() * k, p1.y() + v.y() * k );
double lambdav = QgsVector( inter.x() - p1.x(), inter.y() - p1.y() ) * v;
if ( lambdav < 0. + 1E-8 || lambdav > vl - 1E-8 )
return false;
double lambdaw = QgsVector( inter.x() - q1.x(), inter.y() - q1.y() ) * w;
if ( lambdaw < 0. + 1E-8 || lambdaw >= wl - 1E-8 )
return false;
return true;
}
double QgsGeometryUtils::sqrDistance2D( const QgsPointV2& pt1, const QgsPointV2& pt2 )
{
return ( pt1.x() - pt2.x() ) * ( pt1.x() - pt2.x() ) + ( pt1.y() - pt2.y() ) * ( pt1.y() - pt2.y() );
}
/**
* Calculate the area of a triangle in 2d
*/
static double triarea2d( const QgsPointV2 &P1, const QgsPointV2 &P2, const QgsPointV2 &P3 )
{
return qAbs( 0.5 * (( P1.x() - P2.x() ) * ( P3.y() - P2.y() ) - ( P1.y() - P2.y() ) * ( P3.x() - P2.x() ) ) );
}
void QgsMapToolCircularStringRadius::cadCanvasReleaseEvent( QgsMapMouseEvent* e )
{
QgsPointV2 mapPoint( e->mapPoint().x(), e->mapPoint().y() );
if ( e->button() == Qt::LeftButton )
{
if ( mPoints.isEmpty() )
{
//get first point from parent tool if there. Todo: move to upper class
const QgsCompoundCurveV2* compoundCurve = mParentTool->captureCurve();
if ( compoundCurve && compoundCurve->nCurves() > 0 )
{
const QgsCurveV2* curve = compoundCurve->curveAt( compoundCurve->nCurves() - 1 );
if ( curve )
{
//mParentTool->captureCurve() is in layer coordinates, but we need map coordinates
QgsPointV2 endPointLayerCoord = curve->endPoint();
QgsPoint mapPoint = toMapCoordinates( mCanvas->currentLayer(), QgsPoint( endPointLayerCoord.x(), endPointLayerCoord.y() ) );
mPoints.append( QgsPointV2( mapPoint.x(), mapPoint.y() ) );
}
}
else
{
mPoints.append( mapPoint );
return;
}
}
if ( mPoints.size() % 2 == 1 )
{
if ( !mRadiusMode )
{
delete mRubberBand; mRubberBand = 0;
mTemporaryEndPointX = mapPoint.x();
mTemporaryEndPointY = mapPoint.y();
mRadiusMode = true;
//initial radius is distance( tempPoint - mPoints.last ) / 2.0
double minRadius = sqrt( QgsGeometryUtils::sqrDistance2D( mPoints.last(), QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ) ) ) / 2.0;
mRadius = minRadius + minRadius / 10.0;
recalculateCircularString();
createRadiusSpinBox();
if ( mRadiusSpinBox )
{
mRadiusSpinBox->setMinimum( minRadius );
}
}
else
{
QgsPointV2 result;
if ( QgsGeometryUtils::segmentMidPoint( mPoints.last(), QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ), result, mRadius, QgsPointV2( mapPoint.x(), mapPoint.y() ) ) )
{
mPoints.append( result );
mPoints.append( QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ) );
}
mRadiusMode = false;
deleteRadiusSpinBox();
}
}
else
{
//can we get there?
}
}
else if ( e->button() == Qt::RightButton )
{
deactivate();
if ( mParentTool )
{
mParentTool->canvasReleaseEvent( e );
}
}
}
void QgsGeometryUtils::circleCenterRadius( const QgsPointV2& pt1, const QgsPointV2& pt2, const QgsPointV2& pt3, double& radius, double& centerX, double& centerY )
{
double dx21, dy21, dx31, dy31, h21, h31, d;
//closed circle
if ( qgsDoubleNear( pt1.x(), pt3.x() ) && qgsDoubleNear( pt1.y(), pt3.y() ) )
{
centerX = pt2.x();
centerY = pt2.y();
radius = sqrt( pow( pt2.x() - pt1.x(), 2.0 ) + pow( pt2.y() - pt1.y(), 2.0 ) );
return;
}
// Using cartesian circumcenter eguations from page https://en.wikipedia.org/wiki/Circumscribed_circle
dx21 = pt2.x() - pt1.x();
dy21 = pt2.y() - pt1.y();
dx31 = pt3.x() - pt1.x();
dy31 = pt3.y() - pt1.y();
h21 = pow( dx21, 2.0 ) + pow( dy21, 2.0 );
h31 = pow( dx31, 2.0 ) + pow( dy31, 2.0 );
// 2*Cross product, d<0 means clockwise and d>0 counterclockwise sweeping angle
d = 2 * ( dx21 * dy31 - dx31 * dy21 );
// Check colinearity, Cross product = 0
if ( qgsDoubleNear( fabs( d ), 0.0, 0.00000000001 ) )
{
radius = -1.0;
return;
}
// Calculate centroid coordinates and radius
centerX = pt1.x() + ( h21 * dy31 - h31 * dy21 ) / d;
centerY = pt1.y() - ( h21 * dx31 - h31 * dx21 ) / d;
radius = sqrt( pow( centerX - pt1.x(), 2.0 ) + pow( centerY - pt1.y(), 2.0 ) );
}
void QgsMapToolIdentify::closestVertexAttributes( const QgsAbstractGeometry& geometry, QgsVertexId vId, QgsMapLayer *layer, QMap< QString, QString >& derivedAttributes )
{
QString str = QLocale::system().toString( vId.vertex + 1 );
derivedAttributes.insert( tr( "Closest vertex number" ), str );
QgsPointV2 closestPoint = geometry.vertexAt( vId );
QgsPoint closestPointMapCoords = mCanvas->mapSettings().layerToMapCoordinates( layer, QgsPoint( closestPoint.x(), closestPoint.y() ) );
derivedAttributes.insert( "Closest vertex X", formatXCoordinate( closestPointMapCoords ) );
derivedAttributes.insert( "Closest vertex Y", formatYCoordinate( closestPointMapCoords ) );
if ( closestPoint.is3D() )
{
str = QLocale::system().toString( closestPoint.z(), 'g', 10 );
derivedAttributes.insert( "Closest vertex Z", str );
}
if ( closestPoint.isMeasure() )
{
str = QLocale::system().toString( closestPoint.m(), 'g', 10 );
derivedAttributes.insert( "Closest vertex M", str );
}
if ( vId.type == QgsVertexId::CurveVertex )
{
double radius, centerX, centerY;
QgsVertexId vIdBefore = vId;
--vIdBefore.vertex;
QgsVertexId vIdAfter = vId;
++vIdAfter.vertex;
QgsGeometryUtils::circleCenterRadius( geometry.vertexAt( vIdBefore ), geometry.vertexAt( vId ),
geometry.vertexAt( vIdAfter ), radius, centerX, centerY );
derivedAttributes.insert( "Closest vertex radius", QLocale::system().toString( radius ) );
}
}
void QgsMapToolAddCircularString::activate()
{
if ( mParentTool )
{
mParentTool->deleteTempRubberBand();
if ( mPoints.isEmpty() )
{
// if the parent tool has a curve, use its last point as the first point in this curve
const QgsCompoundCurveV2* compoundCurve = mParentTool->captureCurve();
if ( compoundCurve && compoundCurve->nCurves() > 0 )
{
const QgsCurveV2* curve = compoundCurve->curveAt( compoundCurve->nCurves() - 1 );
if ( curve )
{
//mParentTool->captureCurve() is in layer coordinates, but we need map coordinates
QgsPointV2 endPointLayerCoord = curve->endPoint();
QgsPoint mapPoint = toMapCoordinates( mCanvas->currentLayer(), QgsPoint( endPointLayerCoord.x(), endPointLayerCoord.y() ) );
mPoints.append( QgsPointV2( mapPoint ) );
if ( !mTempRubberBand )
{
mTempRubberBand = createGeometryRubberBand(( mode() == CapturePolygon ) ? Qgis::Polygon : Qgis::Line, true );
mTempRubberBand->show();
}
QgsCircularStringV2* c = new QgsCircularStringV2();
QgsPointSequenceV2 rubberBandPoints = mPoints;
rubberBandPoints.append( QgsPointV2( mapPoint ) );
c->setPoints( rubberBandPoints );
mTempRubberBand->setGeometry( c );
}
}
}
}
QgsMapToolCapture::activate();
}
void QgsMapToolAddFeature::cadCanvasReleaseEvent( QgsMapMouseEvent* e )
{
QgsVectorLayer* vlayer = currentVectorLayer();
if ( !vlayer )
{
notifyNotVectorLayer();
return;
}
QgsWkbTypes::Type layerWKBType = vlayer->wkbType();
QgsVectorDataProvider* provider = vlayer->dataProvider();
if ( !( provider->capabilities() & QgsVectorDataProvider::AddFeatures ) )
{
emit messageEmitted( tr( "The data provider for this layer does not support the addition of features." ), QgsMessageBar::WARNING );
return;
}
if ( !vlayer->isEditable() )
{
notifyNotEditableLayer();
return;
}
// POINT CAPTURING
if ( mode() == CapturePoint )
{
if ( e->button() != Qt::LeftButton )
return;
//check we only use this tool for point/multipoint layers
if ( vlayer->geometryType() != QgsWkbTypes::PointGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture point' tool on this vector layer" ), QgsMessageBar::WARNING );
return;
}
QgsPoint savePoint; //point in layer coordinates
try
{
QgsPointV2 fetchPoint;
int res;
res = fetchLayerPoint( e->mapPointMatch(), fetchPoint );
if ( res == 0 )
{
savePoint = QgsPoint( fetchPoint.x(), fetchPoint.y() );
}
else
{
savePoint = toLayerCoordinates( vlayer, e->mapPoint() );
}
QgsDebugMsg( "savePoint = " + savePoint.toString() );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
return;
}
//only do the rest for provider with feature addition support
//note that for the grass provider, this will return false since
//grass provider has its own mechanism of feature addition
if ( provider->capabilities() & QgsVectorDataProvider::AddFeatures )
{
QgsFeature f( vlayer->fields(), 0 );
QgsGeometry g;
if ( layerWKBType == QgsWkbTypes::Point )
{
g = QgsGeometry::fromPoint( savePoint );
}
else if ( layerWKBType == QgsWkbTypes::Point25D )
{
g = QgsGeometry( new QgsPointV2( QgsWkbTypes::PointZ, savePoint.x(), savePoint.y(), 0.0 ) );
}
else if ( layerWKBType == QgsWkbTypes::MultiPoint )
{
g = QgsGeometry::fromMultiPoint( QgsMultiPoint() << savePoint );
}
else if ( layerWKBType == QgsWkbTypes::MultiPoint25D )
{
QgsMultiPointV2* mp = new QgsMultiPointV2();
mp->addGeometry( new QgsPointV2( QgsWkbTypes::PointZ, savePoint.x(), savePoint.y(), 0.0 ) );
g = QgsGeometry( mp );
}
else
{
// if layer supports more types (mCheckGeometryType is false)
g = QgsGeometry::fromPoint( savePoint );
}
f.setGeometry( g );
f.setValid( true );
addFeature( vlayer, &f, false );
vlayer->triggerRepaint();
}
}
// LINE AND POLYGON CAPTURING
else if ( mode() == CaptureLine || mode() == CapturePolygon )
{
//check we only use the line tool for line/multiline layers
if ( mode() == CaptureLine && vlayer->geometryType() != QgsWkbTypes::LineGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture line' tool on this vector layer" ), QgsMessageBar::WARNING );
return;
}
//check we only use the polygon tool for polygon/multipolygon layers
if ( mode() == CapturePolygon && vlayer->geometryType() != QgsWkbTypes::PolygonGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture polygon' tool on this vector layer" ), QgsMessageBar::WARNING );
return;
}
//add point to list and to rubber band
if ( e->button() == Qt::LeftButton )
{
int error = addVertex( e->mapPoint(), e->mapPointMatch() );
if ( error == 1 )
{
//current layer is not a vector layer
return;
}
else if ( error == 2 )
{
//problem with coordinate transformation
emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
return;
}
startCapturing();
}
else if ( e->button() == Qt::RightButton )
{
// End of string
deleteTempRubberBand();
//lines: bail out if there are not at least two vertices
if ( mode() == CaptureLine && size() < 2 )
{
stopCapturing();
return;
}
//polygons: bail out if there are not at least two vertices
if ( mode() == CapturePolygon && size() < 3 )
{
stopCapturing();
return;
}
if ( mode() == CapturePolygon )
{
closePolygon();
}
//create QgsFeature with wkb representation
QScopedPointer< QgsFeature > f( new QgsFeature( vlayer->fields(), 0 ) );
//does compoundcurve contain circular strings?
//does provider support circular strings?
bool hasCurvedSegments = captureCurve()->hasCurvedSegments();
bool providerSupportsCurvedSegments = vlayer->dataProvider()->capabilities() & QgsVectorDataProvider::CircularGeometries;
QgsCurve* curveToAdd = nullptr;
if ( hasCurvedSegments && providerSupportsCurvedSegments )
{
curveToAdd = captureCurve()->clone();
}
else
{
curveToAdd = captureCurve()->curveToLine();
}
if ( mode() == CaptureLine )
{
QgsGeometry* g = new QgsGeometry( curveToAdd );
f->setGeometry( *g );
delete g;
}
else
{
QgsCurvePolygon* poly = nullptr;
if ( hasCurvedSegments && providerSupportsCurvedSegments )
{
poly = new QgsCurvePolygon();
}
else
{
poly = new QgsPolygonV2();
}
poly->setExteriorRing( curveToAdd );
QgsGeometry* g = new QgsGeometry( poly );
f->setGeometry( *g );
delete g;
QgsGeometry featGeom = f->geometry();
int avoidIntersectionsReturn = featGeom.avoidIntersections();
f->setGeometry( featGeom );
if ( avoidIntersectionsReturn == 1 )
{
//not a polygon type. Impossible to get there
}
if ( f->geometry().isGeosEmpty() ) //avoid intersection might have removed the whole geometry
{
emit messageEmitted( tr( "The feature cannot be added because it's geometry collapsed due to intersection avoidance" ), QgsMessageBar::CRITICAL );
stopCapturing();
return;
}
}
f->setValid( true );
if ( addFeature( vlayer, f.data(), false ) )
{
//add points to other features to keep topology up-to-date
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
//use always topological editing for avoidIntersection.
//Otherwise, no way to guarantee the geometries don't have a small gap in between.
QStringList intersectionLayers = QgsProject::instance()->readListEntry( "Digitizing", "/AvoidIntersectionsList" );
bool avoidIntersection = !intersectionLayers.isEmpty();
if ( avoidIntersection ) //try to add topological points also to background layers
{
QStringList::const_iterator lIt = intersectionLayers.constBegin();
for ( ; lIt != intersectionLayers.constEnd(); ++lIt )
{
QgsMapLayer* ml = QgsMapLayerRegistry::instance()->mapLayer( *lIt );
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( ml );
//can only add topological points if background layer is editable...
if ( vl && vl->geometryType() == QgsWkbTypes::PolygonGeometry && vl->isEditable() )
{
vl->addTopologicalPoints( f->geometry() );
}
}
}
else if ( topologicalEditing )
{
vlayer->addTopologicalPoints( f->geometry() );
}
}
stopCapturing();
}
}
}
QgsPointV2 QgsMapTool::toMapCoordinates( QgsMapLayer* layer, const QgsPointV2& point )
{
QgsPoint result = mCanvas->mapSettings().layerToMapCoordinates( layer, QgsPoint( point.x(), point.y() ) );
return QgsPointV2( result.x(), result.y() );
}
void QgsFeatureRendererV2::renderFeatureWithSymbol( QgsFeature& feature, QgsSymbolV2* symbol, QgsRenderContext& context, int layer, bool selected, bool drawVertexMarker )
{
QgsSymbolV2::SymbolType symbolType = symbol->type();
const QgsGeometry* geom = feature.constGeometry();
if ( !geom || !geom->geometry() )
{
return;
}
const QgsGeometry* segmentizedGeometry = geom;
bool deleteSegmentizedGeometry = false;
context.setGeometry( geom->geometry() );
//convert curve types to normal point/line/polygon ones
switch ( QgsWKBTypes::flatType( geom->geometry()->wkbType() ) )
{
case QgsWKBTypes::CurvePolygon:
case QgsWKBTypes::CircularString:
case QgsWKBTypes::CompoundCurve:
case QgsWKBTypes::MultiSurface:
case QgsWKBTypes::MultiCurve:
{
QgsAbstractGeometryV2* g = geom->geometry()->segmentize();
if ( !g )
{
return;
}
segmentizedGeometry = new QgsGeometry( g );
deleteSegmentizedGeometry = true;
break;
}
default:
break;
}
switch ( QgsWKBTypes::flatType( segmentizedGeometry->geometry()->wkbType() ) )
{
case QgsWKBTypes::Point:
{
if ( symbolType != QgsSymbolV2::Marker )
{
QgsDebugMsg( "point can be drawn only with marker symbol!" );
break;
}
QPointF pt;
_getPoint( pt, context, segmentizedGeometry->asWkb() );
(( QgsMarkerSymbolV2* )symbol )->renderPoint( pt, &feature, context, layer, selected );
if ( context.testFlag( QgsRenderContext::DrawSymbolBounds ) )
{
//draw debugging rect
context.painter()->setPen( Qt::red );
context.painter()->setBrush( QColor( 255, 0, 0, 100 ) );
context.painter()->drawRect((( QgsMarkerSymbolV2* )symbol )->bounds( pt, context ) );
}
}
break;
case QgsWKBTypes::LineString:
{
if ( symbolType != QgsSymbolV2::Line )
{
QgsDebugMsg( "linestring can be drawn only with line symbol!" );
break;
}
QPolygonF pts;
_getLineString( pts, context, segmentizedGeometry->asWkb(), symbol->clipFeaturesToExtent() );
(( QgsLineSymbolV2* )symbol )->renderPolyline( pts, &feature, context, layer, selected );
}
break;
case QgsWKBTypes::Polygon:
{
if ( symbolType != QgsSymbolV2::Fill )
{
QgsDebugMsg( "polygon can be drawn only with fill symbol!" );
break;
}
QPolygonF pts;
QList<QPolygonF> holes;
_getPolygon( pts, holes, context, segmentizedGeometry->asWkb(), symbol->clipFeaturesToExtent() );
(( QgsFillSymbolV2* )symbol )->renderPolygon( pts, ( holes.count() ? &holes : NULL ), &feature, context, layer, selected );
}
break;
case QgsWKBTypes::MultiPoint:
{
if ( symbolType != QgsSymbolV2::Marker )
{
QgsDebugMsg( "multi-point can be drawn only with marker symbol!" );
break;
}
QgsConstWkbPtr wkbPtr( segmentizedGeometry->asWkb() + 1 + sizeof( int ) );
unsigned int num;
wkbPtr >> num;
const unsigned char* ptr = wkbPtr;
QPointF pt;
for ( unsigned int i = 0; i < num; ++i )
{
ptr = QgsConstWkbPtr( _getPoint( pt, context, ptr ) );
(( QgsMarkerSymbolV2* )symbol )->renderPoint( pt, &feature, context, layer, selected );
}
}
break;
case QgsWKBTypes::MultiCurve:
case QgsWKBTypes::MultiLineString:
{
if ( symbolType != QgsSymbolV2::Line )
{
QgsDebugMsg( "multi-linestring can be drawn only with line symbol!" );
break;
}
QgsConstWkbPtr wkbPtr( segmentizedGeometry->asWkb() + 1 + sizeof( int ) );
unsigned int num;
wkbPtr >> num;
const unsigned char* ptr = wkbPtr;
QPolygonF pts;
const QgsGeometryCollectionV2* geomCollection = dynamic_cast<const QgsGeometryCollectionV2*>( geom->geometry() );
for ( unsigned int i = 0; i < num; ++i )
{
if ( geomCollection )
{
context.setGeometry( geomCollection->geometryN( i ) );
}
ptr = QgsConstWkbPtr( _getLineString( pts, context, ptr, symbol->clipFeaturesToExtent() ) );
(( QgsLineSymbolV2* )symbol )->renderPolyline( pts, &feature, context, layer, selected );
}
}
break;
case QgsWKBTypes::MultiSurface:
case QgsWKBTypes::MultiPolygon:
{
if ( symbolType != QgsSymbolV2::Fill )
{
QgsDebugMsg( "multi-polygon can be drawn only with fill symbol!" );
break;
}
QgsConstWkbPtr wkbPtr( segmentizedGeometry->asWkb() + 1 + sizeof( int ) );
unsigned int num;
wkbPtr >> num;
const unsigned char* ptr = wkbPtr;
QPolygonF pts;
QList<QPolygonF> holes;
const QgsGeometryCollectionV2* geomCollection = dynamic_cast<const QgsGeometryCollectionV2*>( geom->geometry() );
for ( unsigned int i = 0; i < num; ++i )
{
if ( geomCollection )
{
context.setGeometry( geomCollection->geometryN( i ) );
}
ptr = _getPolygon( pts, holes, context, ptr, symbol->clipFeaturesToExtent() );
(( QgsFillSymbolV2* )symbol )->renderPolygon( pts, ( holes.count() ? &holes : NULL ), &feature, context, layer, selected );
}
break;
}
default:
QgsDebugMsg( QString( "feature %1: unsupported wkb type 0x%2 for rendering" ).arg( feature.id() ).arg( geom->wkbType(), 0, 16 ) );
}
if ( drawVertexMarker )
{
const QgsCoordinateTransform* ct = context.coordinateTransform();
const QgsMapToPixel& mtp = context.mapToPixel();
QgsPointV2 vertexPoint;
QgsVertexId vertexId;
double x, y, z;
QPointF mapPoint;
while ( geom->geometry()->nextVertex( vertexId, vertexPoint ) )
{
//transform
x = vertexPoint.x(); y = vertexPoint.y(); z = vertexPoint.z();
if ( ct )
{
ct->transformInPlace( x, y, z );
}
mapPoint.setX( x ); mapPoint.setY( y );
mtp.transformInPlace( mapPoint.rx(), mapPoint.ry() );
renderVertexMarker( mapPoint, context );
}
}
if ( deleteSegmentizedGeometry )
{
delete segmentizedGeometry;
}
}
void QgsGeometryUtils::circleCenterRadius( const QgsPointV2& pt1, const QgsPointV2& pt2, const QgsPointV2& pt3, double& radius, double& centerX, double& centerY )
{
double temp, bc, cd, det;
//closed circle
if ( qgsDoubleNear( pt1.x(), pt3.x() ) && qgsDoubleNear( pt1.y(), pt3.y() ) )
{
centerX = pt2.x();
centerY = pt2.y();
radius = sqrt( pow( pt2.x() - pt1.x(), 2.0 ) + pow( pt2.y() - pt1.y(), 2.0 ) );
return;
}
temp = pt2.x() * pt2.x() + pt2.y() * pt2.y();
bc = ( pt1.x() * pt1.x() + pt1.y() * pt1.y() - temp ) / 2.0;
cd = ( temp - pt3.x() * pt3.x() - pt3.y() * pt3.y() ) / 2.0;
det = ( pt1.x() - pt2.x() ) * ( pt2.y() - pt3.y() ) - ( pt2.x() - pt3.x() ) * ( pt1.y() - pt2.y() );
/* Check colinearity */
if ( qgsDoubleNear( fabs( det ), 0.0 ) )
{
radius = -1.0;
return;
}
det = 1.0 / det;
centerX = ( bc * ( pt2.y() - pt3.y() ) - cd * ( pt1.y() - pt2.y() ) ) * det;
centerY = (( pt1.x() - pt2.x() ) * cd - ( pt2.x() - pt3.x() ) * bc ) * det;
radius = sqrt(( centerX - pt1.x() ) * ( centerX - pt1.x() ) + ( centerY - pt1.y() ) * ( centerY - pt1.y() ) );
}
void QgsMarkerLineSymbolLayerV2::renderPolylineVertex( const QPolygonF& points, QgsSymbolV2RenderContext& context, Placement placement )
{
if ( points.isEmpty() )
return;
QgsRenderContext& rc = context.renderContext();
double origAngle = mMarker->angle();
int i, maxCount;
bool isRing = false;
double offsetAlongLine = mOffsetAlongLine;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET_ALONG_LINE ) )
{
context.setOriginalValueVariable( mOffsetAlongLine );
offsetAlongLine = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET_ALONG_LINE, context, mOffsetAlongLine ).toDouble();
}
if ( offsetAlongLine != 0 )
{
//scale offset along line
offsetAlongLine = QgsSymbolLayerV2Utils::convertToPainterUnits( rc, offsetAlongLine, mOffsetAlongLineUnit, mOffsetAlongLineMapUnitScale );
}
if ( offsetAlongLine == 0 && context.renderContext().geometry()
&& context.renderContext().geometry()->hasCurvedSegments() && ( placement == Vertex || placement == CurvePoint ) )
{
const QgsCoordinateTransform* ct = context.renderContext().coordinateTransform();
const QgsMapToPixel& mtp = context.renderContext().mapToPixel();
QgsVertexId vId;
QgsPointV2 vPoint;
double x, y, z;
QPointF mapPoint;
while ( context.renderContext().geometry()->nextVertex( vId, vPoint ) )
{
if (( placement == Vertex && vId.type == QgsVertexId::SegmentVertex )
|| ( placement == CurvePoint && vId.type == QgsVertexId::CurveVertex ) )
{
//transform
x = vPoint.x(), y = vPoint.y(); z = vPoint.z();
if ( ct )
{
ct->transformInPlace( x, y, z );
}
mapPoint.setX( x ); mapPoint.setY( y );
mtp.transformInPlace( mapPoint.rx(), mapPoint.ry() );
if ( mRotateMarker )
{
double angle = context.renderContext().geometry()->vertexAngle( vId );
mMarker->setAngle( angle * 180 / M_PI );
}
mMarker->renderPoint( mapPoint, context.feature(), rc, -1, context.selected() );
}
}
return;
}
if ( placement == FirstVertex )
{
i = 0;
maxCount = 1;
}
else if ( placement == LastVertex )
{
i = points.count() - 1;
maxCount = points.count();
}
else if ( placement == Vertex )
{
i = 0;
maxCount = points.count();
if ( points.first() == points.last() )
isRing = true;
}
else
{
return;
}
if ( offsetAlongLine > 0 && ( placement == FirstVertex || placement == LastVertex ) )
{
double distance;
distance = placement == FirstVertex ? offsetAlongLine : -offsetAlongLine;
renderOffsetVertexAlongLine( points, i, distance, context );
// restore original rotation
mMarker->setAngle( origAngle );
return;
}
for ( ; i < maxCount; ++i )
{
if ( isRing && placement == Vertex && i == points.count() - 1 )
{
continue; // don't draw the last marker - it has been drawn already
}
// rotate marker (if desired)
if ( mRotateMarker )
{
double angle = markerAngle( points, isRing, i );
mMarker->setAngle( origAngle + angle * 180 / M_PI );
}
mMarker->renderPoint( points.at( i ), context.feature(), rc, -1, context.selected() );
}
// restore original rotation
mMarker->setAngle( origAngle );
}
void QgsGeometrySegmentLengthCheck::collectErrors( QList<QgsGeometryCheckError*>& errors, QStringList &/*messages*/, QAtomicInt* progressCounter , const QgsFeatureIds &ids ) const
{
const QgsFeatureIds& featureIds = ids.isEmpty() ? mFeaturePool->getFeatureIds() : ids;
Q_FOREACH ( QgsFeatureId featureid, featureIds )
{
if ( progressCounter ) progressCounter->fetchAndAddRelaxed( 1 );
QgsFeature feature;
if ( !mFeaturePool->get( featureid, feature ) )
{
continue;
}
QgsGeometry featureGeom = feature.geometry();
QgsAbstractGeometry* geom = featureGeom.geometry();
for ( int iPart = 0, nParts = geom->partCount(); iPart < nParts; ++iPart )
{
for ( int iRing = 0, nRings = geom->ringCount( iPart ); iRing < nRings; ++iRing )
{
int nVerts = QgsGeometryCheckerUtils::polyLineSize( geom, iPart, iRing );
if ( nVerts < 2 )
{
continue;
}
for ( int iVert = 0, jVert = nVerts - 1; iVert < nVerts; jVert = iVert++ )
{
QgsPointV2 pi = geom->vertexAt( QgsVertexId( iPart, iRing, iVert ) );
QgsPointV2 pj = geom->vertexAt( QgsVertexId( iPart, iRing, jVert ) );
double dist = qSqrt( QgsGeometryUtils::sqrDistance2D( pi, pj ) );
if ( dist < mMinLength )
{
errors.append( new QgsGeometryCheckError( this, featureid, QgsPointV2( 0.5 * ( pi.x() + pj.x() ), 0.5 * ( pi.y() + pj.y() ) ), QgsVertexId( iPart, iRing, iVert ), dist, QgsGeometryCheckError::ValueLength ) );
}
}
}
}
}
}
void QgsCircularString::segmentize( const QgsPointV2& p1, const QgsPointV2& p2, const QgsPointV2& p3, QgsPointSequence &points, double tolerance, SegmentationToleranceType toleranceType ) const
{
//adapted code from postgis
double radius = 0;
double centerX = 0;
double centerY = 0;
QgsGeometryUtils::circleCenterRadius( p1, p2, p3, radius, centerX, centerY );
int segSide = segmentSide( p1, p3, p2 );
if ( p1 != p3 && ( radius < 0 || qgsDoubleNear( segSide, 0.0 ) ) ) //points are colinear
{
points.append( p1 );
points.append( p2 );
points.append( p3 );
return;
}
bool clockwise = false;
if ( segSide == -1 )
{
clockwise = true;
}
double increment = tolerance; //one segment per degree
if ( toleranceType == QgsAbstractGeometry::MaximumDifference )
{
double halfAngle = acos( -tolerance / radius + 1 );
increment = 2 * halfAngle;
}
//angles of pt1, pt2, pt3
double a1 = atan2( p1.y() - centerY, p1.x() - centerX );
double a2 = atan2( p2.y() - centerY, p2.x() - centerX );
double a3 = atan2( p3.y() - centerY, p3.x() - centerX );
if ( clockwise )
{
increment *= -1;
/* Adjust a3 down so we can decrement from a1 to a3 cleanly */
if ( a3 >= a1 )
a3 -= 2.0 * M_PI;
if ( a2 > a1 )
a2 -= 2.0 * M_PI;
}
else
{
/* Adjust a3 up so we can increment from a1 to a3 cleanly */
if ( a3 <= a1 )
a3 += 2.0 * M_PI;
if ( a2 < a1 )
a2 += 2.0 * M_PI;
}
bool hasZ = is3D();
bool hasM = isMeasure();
double x, y;
double z = 0;
double m = 0;
points.append( p1 );
if ( p2 != p3 && p1 != p2 ) //draw straight line segment if two points have the same position
{
QgsWkbTypes::Type pointWkbType = QgsWkbTypes::Point;
if ( hasZ )
pointWkbType = QgsWkbTypes::addZ( pointWkbType );
if ( hasM )
pointWkbType = QgsWkbTypes::addM( pointWkbType );
//make sure the curve point p2 is part of the segmentized vertices. But only if p1 != p3
bool addP2 = true;
if ( qgsDoubleNear( p1.x(), p3.x() ) && qgsDoubleNear( p1.y(), p3.y() ) )
{
addP2 = false;
}
for ( double angle = a1 + increment; clockwise ? angle > a3 : angle < a3; angle += increment )
{
if (( addP2 && clockwise && angle < a2 ) || ( addP2 && !clockwise && angle > a2 ) )
{
points.append( p2 );
addP2 = false;
}
x = centerX + radius * cos( angle );
y = centerY + radius * sin( angle );
if ( !hasZ && !hasM )
{
points.append( QgsPointV2( x, y ) );
continue;
}
if ( hasZ )
{
z = interpolateArc( angle, a1, a2, a3, p1.z(), p2.z(), p3.z() );
}
if ( hasM )
{
m = interpolateArc( angle, a1, a2, a3, p1.m(), p2.m(), p3.m() );
}
points.append( QgsPointV2( pointWkbType, x, y, z, m ) );
}
}
points.append( p3 );
}
void QgsMapToolIdentify::closestVertexAttributes( const QgsAbstractGeometryV2& geometry, QgsVertexId vId, QgsMapLayer *layer, QMap< QString, QString >& derivedAttributes )
{
QString str = QLocale::system().toString( vId.vertex + 1 );
derivedAttributes.insert( tr( "Closest vertex number" ), str );
QgsPointV2 closestPoint = geometry.vertexAt( vId );
QgsPoint closestPointMapCoords = mCanvas->mapSettings().layerToMapCoordinates( layer, QgsPoint( closestPoint.x(), closestPoint.y() ) );
str = QLocale::system().toString( closestPointMapCoords.x(), 'g', 10 );
derivedAttributes.insert( "Closest vertex X", str );
str = QLocale::system().toString( closestPointMapCoords.y(), 'g', 10 );
derivedAttributes.insert( "Closest vertex Y", str );
if ( closestPoint.is3D() )
{
str = QLocale::system().toString( closestPoint.z(), 'g', 10 );
derivedAttributes.insert( "Closest vertex Z", str );
}
if ( closestPoint.isMeasure() )
{
str = QLocale::system().toString( closestPoint.m(), 'g', 10 );
derivedAttributes.insert( "Closest vertex M", str );
}
}
bool QgsTriangle::validateGeom( const QgsPointV2 &p1, const QgsPointV2 &p2, const QgsPointV2 &p3 )
{
if ( ( ( p1 == p2 ) || ( p1 == p3 ) || ( p2 == p3 ) ) || qgsDoubleNear( QgsGeometryUtils::leftOfLine( p1.x(), p1.y(), p2.x(), p2.y(), p3.x(), p3.y() ), 0.0 ) )
{
return false;
}
return true;
}