Function sunMarker

sunMarker(
    samples: SunSample[],
    min: number,
    width: number,
    height: number,
    maxAltitude?: number,
): SunMarker
Place the moving sun marker on the arc at a given time by interpolating between samples.
Parameters
- samples: SunSample[]
  The day's samples, e.g. from sampleSunDay.
- min: number
  Local solar minute-of-day in [0, 1440] to place the marker at.
- width: number
  Drawing width in SVG user units (px).
- height: number
  Drawing height in SVG user units (px).
- maxAltitude: number = 75
  Altitude in degrees that maps to the top of the box. Default 75.
Returns SunMarker
The marker { x, y, altitudeDeg }. When samples is empty, returns the bottom-left corner with altitudeDeg -90.