function intersectRect (node, point) {
  const x = node.x
  const y = node.y

  // Rectangle intersection algorithm from:
  // http://math.stackexchange.com/questions/108113/find-edge-between-two-boxes
  const dx = point.x - x
  const dy = point.y - y
  let w = node.width / 2
  let h = node.height / 2

  let sx, sy
  if (Math.abs(dy) * w > Math.abs(dx) * h) {
    // Intersection is top or bottom of rect.
    if (dy < 0) {
      h = -h
    }
    sx = dy === 0 ? 0 : h * dx / dy
    sy = h
  } else {
    // Intersection is left or right of rect.
    if (dx < 0) {
      w = -w
    }
    sx = w
    sy = dx === 0 ? 0 : w * dy / dx
  }

  return {x: x + sx, y: y + sy}
}

export default intersectRect