Function sampleStops

src/cli/prompts/gradient.tsx:39–49

(stops: RGB[], p: number)

/** Sample a multi-stop gradient at position p∈[0,1]. Clamps out-of-range p. */
export function sampleStops(stops: RGB[], p: number): RGB {
  if (stops.length === 0) return [255, 255, 255];
  if (stops.length === 1) return stops[0]!;
  const clamped = Math.max(0, Math.min(1, p));
  const x = clamped * (stops.length - 1);
  const i = Math.floor(x);
  const frac = x - i;
  const a = stops[i]!;
  const b = stops[Math.min(stops.length - 1, i + 1)]!;
  return lerpColor(a, b, frac);
}

/** Wrap a phase value into [0,1) so callers can advance it without bounds-checking. */
export function wrapPhase(p: number): number {