ScottPlot / ScottPlot/ScottPlot

LockedVerticalRule combined with SignalXY causes jank when panning

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C#
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Description

Issue: (Describe the bug here)
I applied LockedVerticalRule to each subplot in the MultiPlotDraggable Subplots demo in the avalonia samples. When doing so, the candlestick and barchart behave exactly as expected, but with the Signal/SignalXY, I get jank. The line rendered will jump around dragging within the normal constraints,

ScottPlot Version: (What NuGet package are you using?)
Happens in 5.0.55 and master in the latest clone I've done of this repo

Code Sample:

Where there is a loop in the MultiPlotDraggableWindow.cs file, I literally modified the loop to apply vertical rules like this to every subplot.

foreach (Plot plot in AvaPlot.Multiplot.GetPlots())
{
    plot.Axes.Left.LockSize(10);
    plot.Axes.Right.LockSize(80);
    
    var axisLimits = plot.Axes.GetLimits(plot.Axes.Bottom, plot.Axes.Right);
    LockedVertical lockedVertical = new (plot.Axes.Right, axisLimits.YRange.Min,axisLimits.YRange.Max);
    volumePlot.Axes.Rules.Add(lockedVertical);
    volumePlot.Axes.AutoScale();
}

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the MultiPlotDraggableWindow.cs loop in the Avalonia MultiPlotDraggable Subplots demo and reproduce the behavior using LockedVertical with Signal/SignalXY. Compare panning there with the candlestick and barchart subplots, using ScottPlot 5.0.55 or master. Done means the Signal/SignalXY line no longer jumps while dragging within the normal constraints.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
data-visualization
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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