IChartSeriesData interface Pro

Common read surface for a chart series: name, drawing kind, colour and the typed value span (Michael's S9 decision: the value path stays double[]/ ReadOnlySpan, never a boxed per-value indexer). Deliberately NOT Values (an IReadOnlyList) — that stays on ChartSeries only, see its own remarks.

ChartModel and ChartDefinition hold series through this interface so a plain and a StreamingChartSeries take the same code path without caring which one they have. It is an INTERFACE, not a shared base class, because ChartSeries is a record (a C# record can only derive from object or another record — CS8864) and StreamingChartSeries must NOT be one: a mutating buffer under record value semantics drifts after every Append, and worse, a with on it could replace the buffer with one of another length, silently breaking the FIFO invariant (Append's window arithmetic assumes the buffer it allocated). No code in this repository uses with on a chart series (checked before this design), so losing it for the streaming case costs nothing.

public interface IChartSeriesData

Namespace

ArionUI.Charts

Package

ArionUI.Charts · dotnet add package ArionUI.Charts --prerelease

Properties

ChartAxis Axis { get; }

Rgba? Color { get; }

int Count { get; }

ChartSeriesKind Kind { get; }

string Name { get; }

ReadOnlySpan<double> Span { get; }

string? StackGroup { get; }