Method drawRadialGrid

projects/gui/3rdparty/qcustomplot/qcustomplot.cpp:34312–34335

}

void QCPPolarGrid::drawRadialGrid(QCPPainter *painter, const QPointF &center, const QVector<double> &coords, const QPen &pen, const QPen &zeroPen)
{
  if (!mRadialAxis) return;
  if (coords.isEmpty()) return;
  const bool drawZeroLine = zeroPen != Qt::NoPen;
  const double zeroLineEpsilon = qAbs(coords.last()-coords.first())*1e-6;
  
  painter->setPen(pen);
  for (int i=0; i<coords.size(); ++i)
  {
    const double r = mRadialAxis->coordToRadius(coords.at(i));
    if (drawZeroLine && qAbs(coords.at(i)) < zeroLineEpsilon)
    {
      applyAntialiasingHint(painter, mAntialiasedZeroLine, QCP::aeZeroLine);
      painter->setPen(zeroPen);
      painter->drawEllipse(center, r, r);
      painter->setPen(pen);
      applyDefaultAntialiasingHint(painter);
    } else
    {
      painter->drawEllipse(center, r, r);
    }
  }
}

void QCPPolarGrid::drawAngularGrid(QCPPainter *painter, const QPointF &center, double radius, const QVector<QPointF> &ticksCosSin, const QPen &pen)
{