QwtPainter::polylineSplitting has been reenabled. Unfortunately the Qt raster paint engine still has serious performance issues with rendering long polylines.
- QwtPlotCurve::adjacentPoint for monotonic curves: using a binary search algo - QwtPlotCurve::interpolatedValueAt for monotonic curves: using a binary search algo
- wrong inheritances fixed - firstSample, lastSample added
QwtPlotIntervalCurve::TubeAsLines mode added. A performance optimization for rendering huge datasets.
Bugfixes/Adjustments - often needed because of new Qt developments
1.10.0