void QgsCircularStringV2::setPoints( const QgsPointSequenceV2 &points )
{
clearCache();
if ( points.size() < 1 )
{
mWkbType = QgsWKBTypes::Unknown;
mX.clear();
mY.clear();
mZ.clear();
mM.clear();
return;
}
//get wkb type from first point
const QgsPointV2& firstPt = points.at( 0 );
bool hasZ = firstPt.is3D();
bool hasM = firstPt.isMeasure();
setZMTypeFromSubGeometry( &firstPt, QgsWKBTypes::CircularString );
mX.resize( points.size() );
mY.resize( points.size() );
if ( hasZ )
{
mZ.resize( points.size() );
}
else
{
mZ.clear();
}
if ( hasM )
{
mM.resize( points.size() );
}
else
{
mM.clear();
}
for ( int i = 0; i < points.size(); ++i )
{
mX[i] = points[i].x();
mY[i] = points[i].y();
if ( hasZ )
{
mZ[i] = points[i].z();
}
if ( hasM )
{
mM[i] = points[i].m();
}
}
}
void QgsCircularStringV2::addToPainterPath( QPainterPath& path ) const
{
int nPoints = numPoints();
if ( nPoints < 1 )
{
return;
}
if ( path.isEmpty() || path.currentPosition() != QPointF( mX[0], mY[0] ) )
{
path.moveTo( QPointF( mX[0], mY[0] ) );
}
for ( int i = 0; i < ( nPoints - 2 ) ; i += 2 )
{
QgsPointSequenceV2 pt;
segmentize( QgsPointV2( mX[i], mY[i] ), QgsPointV2( mX[i + 1], mY[i + 1] ), QgsPointV2( mX[i + 2], mY[i + 2] ), pt );
for ( int j = 1; j < pt.size(); ++j )
{
path.lineTo( pt.at( j ).x(), pt.at( j ).y() );
}
//arcTo( path, QPointF( mX[i], mY[i] ), QPointF( mX[i + 1], mY[i + 1] ), QPointF( mX[i + 2], mY[i + 2] ) );
}
//if number of points is even, connect to last point with straight line (even though the circular string is not valid)
if ( nPoints % 2 == 0 )
{
path.lineTo( mX[ nPoints - 1 ], mY[ nPoints - 1 ] );
}
}