# XWUIChartCubic

A cubic chart: a fixed-type (`type: 'cubic'`) wrapper around `XWUIChart` that
connects each `series`' `{ x, y }` points with a cubic (smoothly interpolated) curve.
Pass a `block` preset (1-4) and `size` (`sm` / `md` / `lg`); the shared
block config also exposes legend, grid, axis, line-style, and data-label toggles. Use
it when you want a smooth cubic-spline line instead of straight segments.

## Basic Usage

Two monthly series drawn as smooth cubic curves at the md size preset.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two {x, y} month series joined by smooth cubic curves via the cubic chart type.
```

## Drug Dose Response

Sigmoidal effect-vs-concentration curves for two compounds, smoothed as cubic splines.

```example
file: examples/DrugDoseResponse.ts
html: examples/DrugDoseResponse.html
title: Drug Dose Response
description: S-shaped pharmacology dose-response for two compounds with percent-effect tooltips.
```

## Projectile Trajectory

Ballistic height-vs-distance arcs for two launch angles as smooth cubic curves.

```example
file: examples/ProjectileTrajectory.ts
html: examples/ProjectileTrajectory.html
title: Projectile Trajectory
description: Parabolic flight paths at 45 and 30 degrees plotting height against horizontal distance.
```

```api
```