text: import noop from "../noop.js";
  import { point } from "./cardinal.js";
  export function CardinalClosed(context, tension) {
    this._context = context;
    this._k = (1 - tension) / 6;
  }
  CardinalClosed.prototype = {
    areaStart: noop,
    areaEnd: noop,
    lineStart: function () {
      this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
      this._point = 0;
    },
    lineEnd: function () {
      switch (this._point) {
        case 1:
          {
            this._context.moveTo(this._x3, this._y3);
  
            this._context.closePath();
  
            break;
          }
  
        case 2:
          {
            this._context.lineTo(this._x3, this._y3);
  
            this._context.closePath();
  
            break;
          }
  
        case 3:
          {
            this.point(this._x3, this._y3);
            this.point(this._x4, this._y4);
            this.point(this._x5, this._y5);
            break;
          }
      }
    },
    point: function (x, y) {
      x = +x, y = +y;
  
      switch (this._point) {
        case 0:
          this._point = 1;
          this._x3 = x, this._y3 = y;
          break;
  
        case 1:
          this._point = 2;
  
          this._context.moveTo(this._x4 = x, this._y4 = y);
  
          break;
  
        case 2:
          this._point = 3;
          this._x5 = x, this._y5 = y;
          break;
  
        default:
          point(this, x, y);
          break;
      }
  
      this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
      this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
    }
  };
  export default (function custom(tension) {
    function cardinal(context) {
      return new CardinalClosed(context, tension);
    }
  
    cardinal.tension = function (tension) {
      return custom(+tension);
    };
  
    return cardinal;
  })(0);