text: import arrayRemoveDuplicates from "./arrayRemoveDuplicates.js";
  import BoundingRectangle from "./BoundingRectangle.js";
  import BoundingSphere from "./BoundingSphere.js";
  import Cartesian2 from "./Cartesian2.js";
  import Cartesian3 from "./Cartesian3.js";
  import ComponentDatatype from "./ComponentDatatype.js";
  import CornerType from "./CornerType.js";
  import defaultValue from "./defaultValue.js";
  import defined from "./defined.js";
  import DeveloperError from "./DeveloperError.js";
  import Ellipsoid from "./Ellipsoid.js";
  import Geometry from "./Geometry.js";
  import GeometryAttribute from "./GeometryAttribute.js";
  import GeometryAttributes from "./GeometryAttributes.js";
  import IndexDatatype from "./IndexDatatype.js";
  import CesiumMath from "./Math.js";
  import PolygonPipeline from "./PolygonPipeline.js";
  import PolylineVolumeGeometryLibrary from "./PolylineVolumeGeometryLibrary.js";
  import PrimitiveType from "./PrimitiveType.js";
  import WindingOrder from "./WindingOrder.js";
  
  function computeAttributes(positions, shape) {
    var attributes = new GeometryAttributes();
    attributes.position = new GeometryAttribute({
      componentDatatype: ComponentDatatype.DOUBLE,
      componentsPerAttribute: 3,
      values: positions,
    });
  
    var shapeLength = shape.length;
    var vertexCount = attributes.position.values.length / 3;
    var positionLength = positions.length / 3;
    var shapeCount = positionLength / shapeLength;
    var indices = IndexDatatype.createTypedArray(
      vertexCount,
      2 * shapeLength * (shapeCount + 1)
    );
    var i, j;
    var index = 0;
    i = 0;
    var offset = i * shapeLength;
    for (j = 0; j < shapeLength - 1; j++) {
      indices[index++] = j + offset;
      indices[index++] = j + offset + 1;
    }
    indices[index++] = shapeLength - 1 + offset;
    indices[index++] = offset;
  
    i = shapeCount - 1;
    offset = i * shapeLength;
    for (j = 0; j < shapeLength - 1; j++) {
      indices[index++] = j + offset;
      indices[index++] = j + offset + 1;
    }
    indices[index++] = shapeLength - 1 + offset;
    indices[index++] = offset;
  
    for (i = 0; i < shapeCount - 1; i++) {
      var firstOffset = shapeLength * i;
      var secondOffset = firstOffset + shapeLength;
      for (j = 0; j < shapeLength; j++) {
        indices[index++] = j + firstOffset;
        indices[index++] = j + secondOffset;
      }
    }
  
    var geometry = new Geometry({
      attributes: attributes,
      indices: IndexDatatype.createTypedArray(vertexCount, indices),
      boundingSphere: BoundingSphere.fromVertices(positions),
      primitiveType: PrimitiveType.LINES,
    });
  
    return geometry;
  }
  
  /**
   * A description of a polyline with a volume (a 2D shape extruded along a polyline).
   *
   * @alias PolylineVolumeOutlineGeometry
   * @constructor
   *
   * @param {Object} options Object with the following properties:
   * @param {Cartesian3[]} options.polylinePositions An array of positions that define the center of the polyline volume.
   * @param {Cartesian2[]} options.shapePositions An array of positions that define the shape to be extruded along the polyline
   * @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
   * @param {Number} [options.granularity=CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
   * @param {CornerType} [options.cornerType=CornerType.ROUNDED] Determines the style of the corners.
   *
   * @see PolylineVolumeOutlineGeometry#createGeometry
   *
   * @example
   * function computeCircle(radius) {
   *   var positions = [];
   *   for (var i = 0; i < 360; i++) {
   *     var radians = Cesium.Math.toRadians(i);
   *     positions.push(new Cesium.Cartesian2(radius * Math.cos(radians), radius * Math.sin(radians)));
   *   }
   *   return positions;
   * }
   *
   * var volumeOutline = new Cesium.PolylineVolumeOutlineGeometry({
   *   polylinePositions : Cesium.Cartesian3.fromDegreesArray([
   *     -72.0, 40.0,
   *     -70.0, 35.0
   *   ]),
   *   shapePositions : computeCircle(100000.0)
   * });
   */
  function PolylineVolumeOutlineGeometry(options) {
    options = defaultValue(options, defaultValue.EMPTY_OBJECT);
    var positions = options.polylinePositions;
    var shape = options.shapePositions;
  
    //>>includeStart('debug', pragmas.debug);
    if (!defined(positions)) {
      throw new DeveloperError("options.polylinePositions is required.");
    }
    if (!defined(shape)) {
      throw new DeveloperError("options.shapePositions is required.");
    }
    //>>includeEnd('debug');
  
    this._positions = positions;
    this._shape = shape;
    this._ellipsoid = Ellipsoid.clone(
      defaultValue(options.ellipsoid, Ellipsoid.WGS84)
    );
    this._cornerType = defaultValue(options.cornerType, CornerType.ROUNDED);
    this._granularity = defaultValue(
      options.granularity,
      CesiumMath.RADIANS_PER_DEGREE
    );
    this._workerName = "createPolylineVolumeOutlineGeometry";
  
    var numComponents = 1 + positions.length * Cartesian3.packedLength;
    numComponents += 1 + shape.length * Cartesian2.packedLength;
  
    /**
     * The number of elements used to pack the object into an array.
     * @type {Number}
     */
    this.packedLength = numComponents + Ellipsoid.packedLength + 2;
  }
  
  /**
   * Stores the provided instance into the provided array.
   *
   * @param {PolylineVolumeOutlineGeometry} value The value to pack.
   * @param {Number[]} array The array to pack into.
   * @param {Number} [startingIndex=0] The index into the array at which to start packing the elements.
   *
   * @returns {Number[]} The array that was packed into
   */
  PolylineVolumeOutlineGeometry.pack = function (value, array, startingIndex) {
    //>>includeStart('debug', pragmas.debug);
    if (!defined(value)) {
      throw new DeveloperError("value is required");
    }
    if (!defined(array)) {
      throw new DeveloperError("array is required");
    }
    //>>includeEnd('debug');
  
    startingIndex = defaultValue(startingIndex, 0);
  
    var i;
  
    var positions = value._positions;
    var length = positions.length;
    array[startingIndex++] = length;
  
    for (i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
      Cartesian3.pack(positions[i], array, startingIndex);
    }
  
    var shape = value._shape;
    length = shape.length;
    array[startingIndex++] = length;
  
    for (i = 0; i < length; ++i, startingIndex += Cartesian2.packedLength) {
      Cartesian2.pack(shape[i], array, startingIndex);
    }
  
    Ellipsoid.pack(value._ellipsoid, array, startingIndex);
    startingIndex += Ellipsoid.packedLength;
  
    array[startingIndex++] = value._cornerType;
    array[startingIndex] = value._granularity;
  
    return array;
  };
  
  var scratchEllipsoid = Ellipsoid.clone(Ellipsoid.UNIT_SPHERE);
  var scratchOptions = {
    polylinePositions: undefined,
    shapePositions: undefined,
    ellipsoid: scratchEllipsoid,
    height: undefined,
    cornerType: undefined,
    granularity: undefined,
  };
  
  /**
   * Retrieves an instance from a packed array.
   *
   * @param {Number[]} array The packed array.
   * @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
   * @param {PolylineVolumeOutlineGeometry} [result] The object into which to store the result.
   * @returns {PolylineVolumeOutlineGeometry} The modified result parameter or a new PolylineVolumeOutlineGeometry instance if one was not provided.
   */
  PolylineVolumeOutlineGeometry.unpack = function (array, startingIndex, result) {
    //>>includeStart('debug', pragmas.debug);
    if (!defined(array)) {
      throw new DeveloperError("array is required");
    }
    //>>includeEnd('debug');
  
    startingIndex = defaultValue(startingIndex, 0);
  
    var i;
  
    var length = array[startingIndex++];
    var positions = new Array(length);
  
    for (i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
      positions[i] = Cartesian3.unpack(array, startingIndex);
    }
  
    length = array[startingIndex++];
    var shape = new Array(length);
  
    for (i = 0; i < length; ++i, startingIndex += Cartesian2.packedLength) {
      shape[i] = Cartesian2.unpack(array, startingIndex);
    }
  
    var ellipsoid = Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
    startingIndex += Ellipsoid.packedLength;
  
    var cornerType = array[startingIndex++];
    var granularity = array[startingIndex];
  
    if (!defined(result)) {
      scratchOptions.polylinePositions = positions;
      scratchOptions.shapePositions = shape;
      scratchOptions.cornerType = cornerType;
      scratchOptions.granularity = granularity;
      return new PolylineVolumeOutlineGeometry(scratchOptions);
    }
  
    result._positions = positions;
    result._shape = shape;
    result._ellipsoid = Ellipsoid.clone(ellipsoid, result._ellipsoid);
    result._cornerType = cornerType;
    result._granularity = granularity;
  
    return result;
  };
  
  var brScratch = new BoundingRectangle();
  
  /**
   * Computes the geometric representation of the outline of a polyline with a volume, including its vertices, indices, and a bounding sphere.
   *
   * @param {PolylineVolumeOutlineGeometry} polylineVolumeOutlineGeometry A description of the polyline volume outline.
   * @returns {Geometry|undefined} The computed vertices and indices.
   */
  PolylineVolumeOutlineGeometry.createGeometry = function (
    polylineVolumeOutlineGeometry
  ) {
    var positions = polylineVolumeOutlineGeometry._positions;
    var cleanPositions = arrayRemoveDuplicates(
      positions,
      Cartesian3.equalsEpsilon
    );
    var shape2D = polylineVolumeOutlineGeometry._shape;
    shape2D = PolylineVolumeGeometryLibrary.removeDuplicatesFromShape(shape2D);
  
    if (cleanPositions.length < 2 || shape2D.length < 3) {
      return undefined;
    }
  
    if (
      PolygonPipeline.computeWindingOrder2D(shape2D) === WindingOrder.CLOCKWISE
    ) {
      shape2D.reverse();
    }
    var boundingRectangle = BoundingRectangle.fromPoints(shape2D, brScratch);
  
    var computedPositions = PolylineVolumeGeometryLibrary.computePositions(
      cleanPositions,
      shape2D,
      boundingRectangle,
      polylineVolumeOutlineGeometry,
      false
    );
    return computeAttributes(computedPositions, shape2D);
  };
  export default PolylineVolumeOutlineGeometry;
  