Recent snapping functionality was added using Func<T, T> (#2007) but it would be nice to have a collection of possible snap logic (e.g., snap to an array of predefined numbers) but that's hard because these functions accept and return a single value.

I'd like to be able to do something like this:

double[] mySnapPoints = { 1, 2, 3 };
ISnap snapper = new ScottPlot.SnapLogic.Nearest(mySnapPoints);
vline1.DragSnapX = snapper;

I'm thinking something like:

public interface ISnap
{
    double Snap(double value);
}

suggested by @Agorath in https://scottplot.net/discord/

related:

• IDraggable: add DragSnapX and DragSnapY functions #2008
• IDraggable: Support snapping #2007
• ScottPlot 4+5: Implemented a class derived from axis line that snaps to specified positions on its axis. #2006