void QgsMapToolCircularStringRadius::recalculateTempRubberBand( const QgsPointXY &mousePosition )
{
QgsPointSequence rubberBandPoints;
if ( !( mPoints.size() % 2 ) )
{
//recalculate midpoint on circle segment
QgsPoint midPoint;
if ( !QgsGeometryUtils::segmentMidPoint( mPoints.at( mPoints.size() - 2 ), mTemporaryEndPoint, midPoint, mRadius,
QgsPoint( mousePosition ) ) )
{
return;
}
mPoints.replace( mPoints.size() - 1, midPoint );
rubberBandPoints.append( mPoints.at( mPoints.size() - 2 ) );
rubberBandPoints.append( mPoints.last() );
rubberBandPoints.append( mTemporaryEndPoint );
}
else
{
rubberBandPoints.append( mPoints.last() );
rubberBandPoints.append( mapPoint( mousePosition ) );
}
QgsCircularString *cString = new QgsCircularString();
cString->setPoints( rubberBandPoints );
delete mTempRubberBand;
mTempRubberBand = createGeometryRubberBand( mLayerType, true );
mTempRubberBand->setGeometry( cString );
mTempRubberBand->show();
}
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 QgsCompoundCurve *compoundCurve = mParentTool->captureCurve();
if ( compoundCurve && compoundCurve->nCurves() > 0 )
{
const QgsCurve *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 ) ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry, true );
mTempRubberBand->show();
}
QgsCircularString *c = new QgsCircularString();
QgsPointSequence rubberBandPoints = mPoints;
rubberBandPoints.append( QgsPointV2( mapPoint ) );
c->setPoints( rubberBandPoints );
mTempRubberBand->setGeometry( c );
}
}
}
}
QgsMapToolCapture::activate();
}
void QgsMapToolCircularStringRadius::recalculateRubberBand()
{
if ( mPoints.size() >= 3 )
{
QgsCircularString *cString = new QgsCircularString();
int rubberBandSize = mPoints.size() - ( mPoints.size() + 1 ) % 2;
cString->setPoints( mPoints.mid( 0, rubberBandSize ) );
delete mRubberBand;
mRubberBand = createGeometryRubberBand( mLayerType );
mRubberBand->setGeometry( cString );
mRubberBand->show();
}
}
void QgsMapToolCircularStringCurvePoint::cadCanvasReleaseEvent( QgsMapMouseEvent *e )
{
QgsPointV2 mapPoint( e->mapPoint() );
if ( e->button() == Qt::LeftButton )
{
mPoints.append( mapPoint );
if ( !mCenterPointRubberBand && mShowCenterPointRubberBand )
{
createCenterPointRubberBand();
}
if ( !mPoints.isEmpty() )
{
if ( !mTempRubberBand )
{
mTempRubberBand = createGeometryRubberBand( ( mode() == CapturePolygon ) ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry, true );
mTempRubberBand->show();
}
QgsCircularString *c = new QgsCircularString();
QgsPointSequence rubberBandPoints = mPoints.mid( mPoints.size() - 1 - ( mPoints.size() + 1 ) % 2 );
rubberBandPoints.append( mapPoint );
c->setPoints( rubberBandPoints );
mTempRubberBand->setGeometry( c );
}
if ( mPoints.size() > 1 && mPoints.size() % 2 )
{
if ( !mRubberBand )
{
mRubberBand = createGeometryRubberBand( ( mode() == CapturePolygon ) ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry );
mRubberBand->show();
}
QgsCircularString *c = new QgsCircularString();
QgsPointSequence rubberBandPoints = mPoints;
rubberBandPoints.append( mapPoint );
c->setPoints( rubberBandPoints );
mRubberBand->setGeometry( c );
removeCenterPointRubberBand();
}
}
else if ( e->button() == Qt::RightButton )
{
deactivate();
if ( mParentTool )
{
mParentTool->canvasReleaseEvent( e );
}
}
}
void QgsMapToolAddCircularString::updateCenterPointRubberBand( const QgsPointV2 &pt )
{
if ( !mShowCenterPointRubberBand || !mCenterPointRubberBand || mPoints.size() < 2 )
{
return;
}
if ( ( mPoints.size() ) % 2 != 0 )
{
return;
}
//create circular string
QgsCircularString *cs = new QgsCircularString();
QgsPointSequence csPoints;
csPoints.append( mPoints.at( mPoints.size() - 2 ) );
csPoints.append( mPoints.at( mPoints.size() - 1 ) );
csPoints.append( pt );
cs->setPoints( csPoints );
QgsPointV2 center;
double radius;
QgsGeometryUtils::circleCenterRadius( csPoints.at( 0 ), csPoints.at( 1 ), csPoints.at( 2 ), radius, center.rx(), center.ry() );
QgsLineString *segment1 = new QgsLineString();
segment1->addVertex( center );
segment1->addVertex( csPoints.at( 0 ) );
QgsLineString *segment2 = new QgsLineString();
segment2->addVertex( csPoints.at( 2 ) );
segment2->addVertex( center );
QgsCompoundCurve *cc = new QgsCompoundCurve();
cc->addCurve( segment1 );
cc->addCurve( cs );
cc->addCurve( segment2 );
QgsCurvePolygon *cp = new QgsCurvePolygon();
cp->setExteriorRing( cc );
mCenterPointRubberBand->setGeometry( cp );
mCenterPointRubberBand->show();
}
void QgsMapToolAddCircularString::deactivate()
{
if ( !mParentTool || mPoints.size() < 3 )
{
return;
}
if ( mPoints.size() % 2 == 0 ) //a valid circularstring needs to have an odd number of vertices
{
mPoints.removeLast();
}
QgsCircularString *c = new QgsCircularString();
c->setPoints( mPoints );
mParentTool->addCurve( c );
mPoints.clear();
delete mRubberBand;
mRubberBand = nullptr;
delete mTempRubberBand;
mTempRubberBand = nullptr;
removeCenterPointRubberBand();
QgsMapToolCapture::deactivate();
}