Function disc

src/utils/cameraUndistortion.test.ts:16–26

Sample normalized points on a disc of the given radius.

(radius: number, rings = 5, spokes = 8)

/** Sample normalized points on a disc of the given radius. */
function disc(radius: number, rings = 5, spokes = 8): Vec2[] {
  const pts: Vec2[] = [{ x: 0, y: 0 }];
  for (let i = 1; i <= rings; i++) {
    const r = (radius * i) / rings;
    for (let j = 0; j < spokes; j++) {
      const a = (2 * Math.PI * j) / spokes;
      pts.push({ x: r * Math.cos(a), y: r * Math.sin(a) });
    }
  }
  return pts;
}

function maxRoundTripError(modelId: CameraModelId, intrins: CameraIntrinsics, pts: Vec2[]): number {
  let max = 0;