QgsCompoundCurve *QgsCompoundCurve::reversed() const
{
QgsCompoundCurve *clone = new QgsCompoundCurve();
for ( int i = mCurves.count() - 1; i >= 0; --i )
{
QgsCurve *reversedCurve = mCurves.at( i )->reversed();
clone->addCurve( reversedCurve );
}
return clone;
}
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();
}
QgsCompoundCurve *QgsLineString::toCurveType() const
{
QgsCompoundCurve *compoundCurve = new QgsCompoundCurve();
compoundCurve->addCurve( clone() );
return compoundCurve;
}