Function fitTransform

packages/cli/src/commands/motionShotLayout.ts:115–132

(
  pts: Pt[],
  width: number,
  height: number,
)

/** Scale+centre transform that fits `pts` into a W×H frame (with padding). */
export function fitTransform(
  pts: Pt[],
  width: number,
  height: number,
): { k: number; cx: number; cy: number } {
  if (pts.length === 0) return { k: 1, cx: width / 2, cy: height / 2 };
  const xs = pts.map((p) => p.x);
  const ys = pts.map((p) => p.y);
  const minX = Math.min(...xs);
  const maxX = Math.max(...xs);
  const minY = Math.min(...ys);
  const maxY = Math.max(...ys);
  const cx = (minX + maxX) / 2;
  const cy = (minY + maxY) / 2;
  const span = Math.max(maxX - minX, maxY - minY, 1);
  const k = Math.max(0.3, Math.min(7, (Math.min(width, height) * 0.8) / span));
  return { k, cx, cy };
}

/** Grid geometry for the filmstrip layout. */
export function stripCells(n: number, width: number, height: number) {