text: /**
   * Cesium - https://github.com/CesiumGS/cesium
   *
   * Copyright 2011-2020 Cesium Contributors
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * Columbus View (Pat. Pend.)
   *
   * Portions licensed separately.
   * See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details.
   */
  
  define(['./when-7ef6387a', './Check-ed6a1804', './Math-55f9392d', './Cartesian2-4938fd49', './Transforms-c1370102', './RuntimeError-5b606d78', './WebGLConstants-30fc6f5c', './ComponentDatatype-a863af81', './GeometryAttribute-9c9ba21b', './GeometryAttributes-cb18da36', './AttributeCompression-32c700bf', './GeometryPipeline-508baad5', './EncodedCartesian3-e8e56d09', './IndexDatatype-891b5845', './IntersectionTests-c04cb326', './Plane-471d15e0', './GeometryOffsetAttribute-5cfc2755', './VertexFormat-d75df48f', './GeometryInstance-3dc88cf3', './arrayRemoveDuplicates-8221727f', './BoundingRectangle-5cc0e772', './EllipsoidTangentPlane-382e857b', './ArcType-2ee8dfbb', './EllipsoidRhumbLine-eaec237b', './PolygonPipeline-752b8b0d', './PolygonGeometryLibrary-a9bcdc3c', './EllipsoidGeodesic-56d05e42'], function (when, Check, _Math, Cartesian2, Transforms, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, GeometryAttributes, AttributeCompression, GeometryPipeline, EncodedCartesian3, IndexDatatype, IntersectionTests, Plane, GeometryOffsetAttribute, VertexFormat, GeometryInstance, arrayRemoveDuplicates, BoundingRectangle, EllipsoidTangentPlane, ArcType, EllipsoidRhumbLine, PolygonPipeline, PolygonGeometryLibrary, EllipsoidGeodesic) { 'use strict';
  
      var scratchCarto1 = new Cartesian2.Cartographic();
          var scratchCarto2 = new Cartesian2.Cartographic();
          function adjustPosHeightsForNormal(position, p1, p2, ellipsoid) {
              var carto1 = ellipsoid.cartesianToCartographic(position, scratchCarto1);
              var height = carto1.height;
              var p1Carto = ellipsoid.cartesianToCartographic(p1, scratchCarto2);
              p1Carto.height = height;
              ellipsoid.cartographicToCartesian(p1Carto, p1);
  
              var p2Carto = ellipsoid.cartesianToCartographic(p2, scratchCarto2);
              p2Carto.height = height - 100;
              ellipsoid.cartographicToCartesian(p2Carto, p2);
          }
  
          var scratchBoundingRectangle = new BoundingRectangle.BoundingRectangle();
          var scratchPosition = new Cartesian2.Cartesian3();
          var scratchNormal = new Cartesian2.Cartesian3();
          var scratchTangent = new Cartesian2.Cartesian3();
          var scratchBitangent = new Cartesian2.Cartesian3();
          var p1Scratch = new Cartesian2.Cartesian3();
          var p2Scratch = new Cartesian2.Cartesian3();
          var scratchPerPosNormal = new Cartesian2.Cartesian3();
          var scratchPerPosTangent = new Cartesian2.Cartesian3();
          var scratchPerPosBitangent = new Cartesian2.Cartesian3();
  
          var appendTextureCoordinatesOrigin = new Cartesian2.Cartesian2();
          var appendTextureCoordinatesCartesian2 = new Cartesian2.Cartesian2();
          var appendTextureCoordinatesCartesian3 = new Cartesian2.Cartesian3();
          var appendTextureCoordinatesQuaternion = new Transforms.Quaternion();
          var appendTextureCoordinatesMatrix3 = new Transforms.Matrix3();
          var tangentMatrixScratch = new Transforms.Matrix3();
  
          function computeAttributes(options) {
              var vertexFormat = options.vertexFormat;
              var geometry = options.geometry;
              var shadowVolume = options.shadowVolume;
              var flatPositions = geometry.attributes.position.values;
              var length = flatPositions.length;
              var wall = options.wall;
              var top = options.top || wall;
              var bottom = options.bottom || wall;
              if (vertexFormat.st || vertexFormat.normal || vertexFormat.tangent || vertexFormat.bitangent || shadowVolume) {
                  // PERFORMANCE_IDEA: Compute before subdivision, then just interpolate during subdivision.
                  // PERFORMANCE_IDEA: Compute with createGeometryFromPositions() for fast path when there's no holes.
                  var boundingRectangle = options.boundingRectangle;
                  var tangentPlane = options.tangentPlane;
                  var ellipsoid = options.ellipsoid;
                  var stRotation = options.stRotation;
                  var perPositionHeight = options.perPositionHeight;
  
                  var origin = appendTextureCoordinatesOrigin;
                  origin.x = boundingRectangle.x;
                  origin.y = boundingRectangle.y;
  
                  var textureCoordinates = vertexFormat.st ? new Float32Array(2 * (length / 3)) : undefined;
                  var normals;
                  if (vertexFormat.normal) {
                      if (perPositionHeight && top && !wall) {
                          normals = geometry.attributes.normal.values;
                      } else {
                          normals = new Float32Array(length);
                      }
                  }
                  var tangents = vertexFormat.tangent ? new Float32Array(length) : undefined;
                  var bitangents = vertexFormat.bitangent ? new Float32Array(length) : undefined;
                  var extrudeNormals = shadowVolume ? new Float32Array(length) : undefined;
  
                  var textureCoordIndex = 0;
                  var attrIndex = 0;
  
                  var normal = scratchNormal;
                  var tangent = scratchTangent;
                  var bitangent = scratchBitangent;
                  var recomputeNormal = true;
  
                  var textureMatrix = appendTextureCoordinatesMatrix3;
                  var tangentRotationMatrix = tangentMatrixScratch;
                  if (stRotation !== 0.0) {
                      var rotation = Transforms.Quaternion.fromAxisAngle(tangentPlane._plane.normal, stRotation, appendTextureCoordinatesQuaternion);
                      textureMatrix = Transforms.Matrix3.fromQuaternion(rotation, textureMatrix);
  
                      rotation = Transforms.Quaternion.fromAxisAngle(tangentPlane._plane.normal, -stRotation, appendTextureCoordinatesQuaternion);
                      tangentRotationMatrix = Transforms.Matrix3.fromQuaternion(rotation, tangentRotationMatrix);
                  } else {
                      textureMatrix = Transforms.Matrix3.clone(Transforms.Matrix3.IDENTITY, textureMatrix);
                      tangentRotationMatrix = Transforms.Matrix3.clone(Transforms.Matrix3.IDENTITY, tangentRotationMatrix);
                  }
  
                  var bottomOffset = 0;
                  var bottomOffset2 = 0;
  
                  if (top && bottom) {
                      bottomOffset = length / 2;
                      bottomOffset2 = length / 3;
  
                      length /= 2;
                  }
  
                  for ( var i = 0; i < length; i += 3) {
                      var position = Cartesian2.Cartesian3.fromArray(flatPositions, i, appendTextureCoordinatesCartesian3);
  
                      if (vertexFormat.st) {
                          var p = Transforms.Matrix3.multiplyByVector(textureMatrix, position, scratchPosition);
                          p = ellipsoid.scaleToGeodeticSurface(p,p);
                          var st = tangentPlane.projectPointOntoPlane(p, appendTextureCoordinatesCartesian2);
                          Cartesian2.Cartesian2.subtract(st, origin, st);
  
                          var stx = _Math.CesiumMath.clamp(st.x / boundingRectangle.width, 0, 1);
                          var sty = _Math.CesiumMath.clamp(st.y / boundingRectangle.height, 0, 1);
                          if (bottom) {
                              textureCoordinates[textureCoordIndex + bottomOffset2] = stx;
                              textureCoordinates[textureCoordIndex + 1 + bottomOffset2] = sty;
                          }
                          if (top) {
                              textureCoordinates[textureCoordIndex] = stx;
                              textureCoordinates[textureCoordIndex + 1] = sty;
                          }
  
                          textureCoordIndex += 2;
                      }
  
                      if (vertexFormat.normal || vertexFormat.tangent || vertexFormat.bitangent || shadowVolume) {
                          var attrIndex1 = attrIndex + 1;
                          var attrIndex2 = attrIndex + 2;
  
                          if (wall) {
                              if (i + 3 < length) {
                                  var p1 = Cartesian2.Cartesian3.fromArray(flatPositions, i + 3, p1Scratch);
  
                                  if (recomputeNormal) {
                                      var p2 = Cartesian2.Cartesian3.fromArray(flatPositions, i + length, p2Scratch);
                                      if (perPositionHeight) {
                                          adjustPosHeightsForNormal(position, p1, p2, ellipsoid);
                                      }
                                      Cartesian2.Cartesian3.subtract(p1, position, p1);
                                      Cartesian2.Cartesian3.subtract(p2, position, p2);
                                      normal = Cartesian2.Cartesian3.normalize(Cartesian2.Cartesian3.cross(p2, p1, normal), normal);
                                      recomputeNormal = false;
                                  }
  
                                  if (Cartesian2.Cartesian3.equalsEpsilon(p1, position, _Math.CesiumMath.EPSILON10)) { // if we've reached a corner
                                      recomputeNormal = true;
                                  }
                              }
  
                              if (vertexFormat.tangent || vertexFormat.bitangent) {
                                  bitangent = ellipsoid.geodeticSurfaceNormal(position, bitangent);
                                  if (vertexFormat.tangent) {
                                      tangent = Cartesian2.Cartesian3.normalize(Cartesian2.Cartesian3.cross(bitangent, normal, tangent), tangent);
                                  }
                              }
                          } else {
                              normal = ellipsoid.geodeticSurfaceNormal(position, normal);
                              if (vertexFormat.tangent || vertexFormat.bitangent) {
                                  if (perPositionHeight) {
                                      scratchPerPosNormal = Cartesian2.Cartesian3.fromArray(normals, attrIndex, scratchPerPosNormal);
                                      scratchPerPosTangent = Cartesian2.Cartesian3.cross(Cartesian2.Cartesian3.UNIT_Z, scratchPerPosNormal, scratchPerPosTangent);
                                      scratchPerPosTangent = Cartesian2.Cartesian3.normalize(Transforms.Matrix3.multiplyByVector(tangentRotationMatrix, scratchPerPosTangent, scratchPerPosTangent), scratchPerPosTangent);
                                      if (vertexFormat.bitangent) {
                                          scratchPerPosBitangent = Cartesian2.Cartesian3.normalize(Cartesian2.Cartesian3.cross(scratchPerPosNormal, scratchPerPosTangent, scratchPerPosBitangent), scratchPerPosBitangent);
                                      }
                                  }
  
                                  tangent = Cartesian2.Cartesian3.cross(Cartesian2.Cartesian3.UNIT_Z, normal, tangent);
                                  tangent = Cartesian2.Cartesian3.normalize(Transforms.Matrix3.multiplyByVector(tangentRotationMatrix, tangent, tangent), tangent);
                                  if (vertexFormat.bitangent) {
                                      bitangent = Cartesian2.Cartesian3.normalize(Cartesian2.Cartesian3.cross(normal, tangent, bitangent), bitangent);
                                  }
                              }
                          }
  
                          if (vertexFormat.normal) {
                              if (options.wall) {
                                  normals[attrIndex + bottomOffset] = normal.x;
                                  normals[attrIndex1 + bottomOffset] = normal.y;
                                  normals[attrIndex2 + bottomOffset] = normal.z;
                              } else if (bottom){
                                  normals[attrIndex + bottomOffset] = -normal.x;
                                  normals[attrIndex1 + bottomOffset] = -normal.y;
                                  normals[attrIndex2 + bottomOffset] = -normal.z;
                              }
  
                              if ((top && !perPositionHeight) || wall) {
                                  normals[attrIndex] = normal.x;
                                  normals[attrIndex1] = normal.y;
                                  normals[attrIndex2] = normal.z;
                              }
                          }
  
                          if (shadowVolume) {
                              if (wall) {
                                  normal = ellipsoid.geodeticSurfaceNormal(position, normal);
                              }
                              extrudeNormals[attrIndex + bottomOffset] = -normal.x;
                              extrudeNormals[attrIndex1 + bottomOffset] = -normal.y;
                              extrudeNormals[attrIndex2 + bottomOffset] = -normal.z;
                          }
  
                          if (vertexFormat.tangent) {
                              if (options.wall) {
                                  tangents[attrIndex + bottomOffset] = tangent.x;
                                  tangents[attrIndex1 + bottomOffset] = tangent.y;
                                  tangents[attrIndex2 + bottomOffset] = tangent.z;
                              } else if (bottom) {
                                  tangents[attrIndex + bottomOffset] = -tangent.x;
                                  tangents[attrIndex1 + bottomOffset] = -tangent.y;
                                  tangents[attrIndex2 + bottomOffset] = -tangent.z;
                              }
  
                              if(top) {
                                  if (perPositionHeight) {
                                      tangents[attrIndex] = scratchPerPosTangent.x;
                                      tangents[attrIndex1] = scratchPerPosTangent.y;
                                      tangents[attrIndex2] = scratchPerPosTangent.z;
                                  } else {
                                      tangents[attrIndex] = tangent.x;
                                      tangents[attrIndex1] = tangent.y;
                                      tangents[attrIndex2] = tangent.z;
                                  }
                              }
                          }
  
                          if (vertexFormat.bitangent) {
                              if (bottom) {
                                  bitangents[attrIndex + bottomOffset] = bitangent.x;
                                  bitangents[attrIndex1 + bottomOffset] = bitangent.y;
                                  bitangents[attrIndex2 + bottomOffset] = bitangent.z;
                              }
                              if (top) {
                                  if (perPositionHeight) {
                                      bitangents[attrIndex] = scratchPerPosBitangent.x;
                                      bitangents[attrIndex1] = scratchPerPosBitangent.y;
                                      bitangents[attrIndex2] = scratchPerPosBitangent.z;
                                  } else {
                                      bitangents[attrIndex] = bitangent.x;
                                      bitangents[attrIndex1] = bitangent.y;
                                      bitangents[attrIndex2] = bitangent.z;
                                  }
                              }
                          }
                          attrIndex += 3;
                      }
                  }
  
                  if (vertexFormat.st) {
                      geometry.attributes.st = new GeometryAttribute.GeometryAttribute({
                          componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
                          componentsPerAttribute : 2,
                          values : textureCoordinates
                      });
                  }
  
                  if (vertexFormat.normal) {
                      geometry.attributes.normal = new GeometryAttribute.GeometryAttribute({
                          componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
                          componentsPerAttribute : 3,
                          values : normals
                      });
                  }
  
                  if (vertexFormat.tangent) {
                      geometry.attributes.tangent = new GeometryAttribute.GeometryAttribute({
                          componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
                          componentsPerAttribute : 3,
                          values : tangents
                      });
                  }
  
                  if (vertexFormat.bitangent) {
                      geometry.attributes.bitangent = new GeometryAttribute.GeometryAttribute({
                          componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
                          componentsPerAttribute : 3,
                          values : bitangents
                      });
                  }
  
                  if (shadowVolume) {
                      geometry.attributes.extrudeDirection = new GeometryAttribute.GeometryAttribute({
                          componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
                          componentsPerAttribute : 3,
                          values : extrudeNormals
                      });
                  }
              }
  
              if (options.extrude && when.defined(options.offsetAttribute)) {
                  var size = flatPositions.length / 3;
                  var offsetAttribute = new Uint8Array(size);
  
                  if (options.offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.TOP) {
                      if ((top && bottom) || wall) {
                          offsetAttribute = GeometryOffsetAttribute.arrayFill(offsetAttribute, 1, 0, size / 2);
                      } else if (top) {
                          offsetAttribute = GeometryOffsetAttribute.arrayFill(offsetAttribute, 1);
                      }
                  } else {
                      var offsetValue = options.offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE ? 0 : 1;
                      offsetAttribute = GeometryOffsetAttribute.arrayFill(offsetAttribute, offsetValue);
                  }
  
                  geometry.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
                      componentDatatype : ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
                      componentsPerAttribute : 1,
                      values : offsetAttribute
                  });
              }
  
              return geometry;
          }
  
          var startCartographicScratch = new Cartesian2.Cartographic();
          var endCartographicScratch = new Cartesian2.Cartographic();
          var idlCross = {
              westOverIDL : 0.0,
              eastOverIDL : 0.0
          };
          var ellipsoidGeodesic = new EllipsoidGeodesic.EllipsoidGeodesic();
          function computeRectangle(positions, ellipsoid, arcType, granularity, result) {
              result = when.defaultValue(result, new Cartesian2.Rectangle());
              if (!when.defined(positions) || positions.length < 3) {
                  result.west = 0.0;
                  result.north = 0.0;
                  result.south = 0.0;
                  result.east = 0.0;
                  return result;
              }
  
              if (arcType === ArcType.ArcType.RHUMB) {
                  return Cartesian2.Rectangle.fromCartesianArray(positions, ellipsoid, result);
              }
  
              if (!ellipsoidGeodesic.ellipsoid.equals(ellipsoid)) {
                  ellipsoidGeodesic = new EllipsoidGeodesic.EllipsoidGeodesic(undefined, undefined, ellipsoid);
              }
  
              result.west = Number.POSITIVE_INFINITY;
              result.east = Number.NEGATIVE_INFINITY;
              result.south = Number.POSITIVE_INFINITY;
              result.north = Number.NEGATIVE_INFINITY;
  
              idlCross.westOverIDL = Number.POSITIVE_INFINITY;
              idlCross.eastOverIDL = Number.NEGATIVE_INFINITY;
  
              var inverseChordLength = 1.0 / _Math.CesiumMath.chordLength(granularity, ellipsoid.maximumRadius);
              var positionsLength = positions.length;
              var endCartographic = ellipsoid.cartesianToCartographic(positions[0], endCartographicScratch);
              var startCartographic = startCartographicScratch;
              var swap;
  
              for (var i = 1; i < positionsLength; i++) {
                  swap = startCartographic;
                  startCartographic = endCartographic;
                  endCartographic = ellipsoid.cartesianToCartographic(positions[i], swap);
                  ellipsoidGeodesic.setEndPoints(startCartographic, endCartographic);
                  interpolateAndGrowRectangle(ellipsoidGeodesic, inverseChordLength, result, idlCross);
              }
  
              swap = startCartographic;
              startCartographic = endCartographic;
              endCartographic = ellipsoid.cartesianToCartographic(positions[0], swap);
              ellipsoidGeodesic.setEndPoints(startCartographic, endCartographic);
              interpolateAndGrowRectangle(ellipsoidGeodesic, inverseChordLength, result, idlCross);
  
              if (result.east - result.west > idlCross.eastOverIDL - idlCross.westOverIDL) {
                  result.west = idlCross.westOverIDL;
                  result.east = idlCross.eastOverIDL;
  
                  if (result.east > _Math.CesiumMath.PI) {
                      result.east = result.east - _Math.CesiumMath.TWO_PI;
                  }
                  if (result.west > _Math.CesiumMath.PI) {
                      result.west = result.west - _Math.CesiumMath.TWO_PI;
                  }
              }
  
              return result;
          }
  
          var interpolatedCartographicScratch = new Cartesian2.Cartographic();
          function interpolateAndGrowRectangle(ellipsoidGeodesic, inverseChordLength, result, idlCross) {
              var segmentLength = ellipsoidGeodesic.surfaceDistance;
  
              var numPoints = Math.ceil(segmentLength * inverseChordLength);
              var subsegmentDistance = numPoints > 0 ? segmentLength / (numPoints - 1) : Number.POSITIVE_INFINITY;
              var interpolationDistance = 0.0;
  
              for (var i = 0; i < numPoints; i++) {
                  var interpolatedCartographic = ellipsoidGeodesic.interpolateUsingSurfaceDistance(interpolationDistance, interpolatedCartographicScratch);
                  interpolationDistance += subsegmentDistance;
                  var longitude = interpolatedCartographic.longitude;
                  var latitude = interpolatedCartographic.latitude;
  
                  result.west = Math.min(result.west, longitude);
                  result.east = Math.max(result.east, longitude);
                  result.south = Math.min(result.south, latitude);
                  result.north = Math.max(result.north, latitude);
  
                  var lonAdjusted = longitude >= 0 ?  longitude : longitude +  _Math.CesiumMath.TWO_PI;
                  idlCross.westOverIDL = Math.min(idlCross.westOverIDL, lonAdjusted);
                  idlCross.eastOverIDL = Math.max(idlCross.eastOverIDL, lonAdjusted);
              }
          }
  
          var createGeometryFromPositionsExtrudedPositions = [];
  
          function createGeometryFromPositionsExtruded(ellipsoid, polygon, granularity, hierarchy, perPositionHeight, closeTop, closeBottom, vertexFormat, arcType) {
              var geos = {
                  walls : []
              };
              var i;
  
              if (closeTop || closeBottom) {
                  var topGeo = PolygonGeometryLibrary.PolygonGeometryLibrary.createGeometryFromPositions(ellipsoid, polygon, granularity, perPositionHeight, vertexFormat, arcType);
  
                  var edgePoints = topGeo.attributes.position.values;
                  var indices = topGeo.indices;
                  var numPositions;
                  var newIndices;
  
                  if (closeTop && closeBottom) {
                      var topBottomPositions = edgePoints.concat(edgePoints);
  
                      numPositions = topBottomPositions.length / 3;
  
                      newIndices = IndexDatatype.IndexDatatype.createTypedArray(numPositions, indices.length * 2);
                      newIndices.set(indices);
                      var ilength = indices.length;
  
                      var length = numPositions / 2;
  
                      for (i = 0; i < ilength; i += 3) {
                          var i0 = newIndices[i] + length;
                          var i1 = newIndices[i + 1] + length;
                          var i2 = newIndices[i + 2] + length;
  
                          newIndices[i + ilength] = i2;
                          newIndices[i + 1 + ilength] = i1;
                          newIndices[i + 2 + ilength] = i0;
                      }
  
                      topGeo.attributes.position.values = topBottomPositions;
                      if (perPositionHeight && vertexFormat.normal) {
                          var normals = topGeo.attributes.normal.values;
                          topGeo.attributes.normal.values = new Float32Array(topBottomPositions.length);
                          topGeo.attributes.normal.values.set(normals);
                      }
                      topGeo.indices = newIndices;
                  } else if (closeBottom) {
                      numPositions = edgePoints.length / 3;
                      newIndices = IndexDatatype.IndexDatatype.createTypedArray(numPositions, indices.length);
  
                      for (i = 0; i < indices.length; i += 3) {
                          newIndices[i] = indices[i + 2];
                          newIndices[i + 1] = indices[i + 1];
                          newIndices[i + 2] = indices[i];
                      }
  
                      topGeo.indices = newIndices;
                  }
  
                  geos.topAndBottom = new GeometryInstance.GeometryInstance({
                      geometry : topGeo
                  });
              }
  
              var outerRing = hierarchy.outerRing;
              var tangentPlane = EllipsoidTangentPlane.EllipsoidTangentPlane.fromPoints(outerRing, ellipsoid);
              var positions2D = tangentPlane.projectPointsOntoPlane(outerRing, createGeometryFromPositionsExtrudedPositions);
  
              var windingOrder = PolygonPipeline.PolygonPipeline.computeWindingOrder2D(positions2D);
              if (windingOrder === PolygonPipeline.WindingOrder.CLOCKWISE) {
                  outerRing = outerRing.slice().reverse();
              }
  
              var wallGeo = PolygonGeometryLibrary.PolygonGeometryLibrary.computeWallGeometry(outerRing, ellipsoid, granularity, perPositionHeight, arcType);
              geos.walls.push(new GeometryInstance.GeometryInstance({
                  geometry : wallGeo
              }));
  
              var holes = hierarchy.holes;
              for (i = 0; i < holes.length; i++) {
                  var hole = holes[i];
  
                  tangentPlane = EllipsoidTangentPlane.EllipsoidTangentPlane.fromPoints(hole, ellipsoid);
                  positions2D = tangentPlane.projectPointsOntoPlane(hole, createGeometryFromPositionsExtrudedPositions);
  
                  windingOrder = PolygonPipeline.PolygonPipeline.computeWindingOrder2D(positions2D);
                  if (windingOrder === PolygonPipeline.WindingOrder.COUNTER_CLOCKWISE) {
                      hole = hole.slice().reverse();
                  }
  
                  wallGeo = PolygonGeometryLibrary.PolygonGeometryLibrary.computeWallGeometry(hole, ellipsoid, granularity, perPositionHeight, arcType);
                  geos.walls.push(new GeometryInstance.GeometryInstance({
                      geometry : wallGeo
                  }));
              }
  
              return geos;
          }
  
          /**
           * A description of a polygon on the ellipsoid. The polygon is defined by a polygon hierarchy. Polygon geometry can be rendered with both {@link Primitive} and {@link GroundPrimitive}.
           *
           * @alias PolygonGeometry
           * @constructor
           *
           * @param {Object} options Object with the following properties:
           * @param {PolygonHierarchy} options.polygonHierarchy A polygon hierarchy that can include holes.
           * @param {Number} [options.height=0.0] The distance in meters between the polygon and the ellipsoid surface.
           * @param {Number} [options.extrudedHeight] The distance in meters between the polygon's extruded face and the ellipsoid surface.
           * @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
           * @param {Number} [options.stRotation=0.0] The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
           * @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 {Boolean} [options.perPositionHeight=false] Use the height of options.positions for each position instead of using options.height to determine the height.
           * @param {Boolean} [options.closeTop=true] When false, leaves off the top of an extruded polygon open.
           * @param {Boolean} [options.closeBottom=true] When false, leaves off the bottom of an extruded polygon open.
           * @param {ArcType} [options.arcType=ArcType.GEODESIC] The type of line the polygon edges must follow. Valid options are {@link ArcType.GEODESIC} and {@link ArcType.RHUMB}.
           *
           * @see PolygonGeometry#createGeometry
           * @see PolygonGeometry#fromPositions
           *
           * @demo {@link https://sandcastle.cesium.com/index.html?src=Polygon.html|Cesium Sandcastle Polygon Demo}
           *
           * @example
           * // 1. create a polygon from points
           * var polygon = new Cesium.PolygonGeometry({
           *   polygonHierarchy : new Cesium.PolygonHierarchy(
           *     Cesium.Cartesian3.fromDegreesArray([
           *       -72.0, 40.0,
           *       -70.0, 35.0,
           *       -75.0, 30.0,
           *       -70.0, 30.0,
           *       -68.0, 40.0
           *     ])
           *   )
           * });
           * var geometry = Cesium.PolygonGeometry.createGeometry(polygon);
           *
           * // 2. create a nested polygon with holes
           * var polygonWithHole = new Cesium.PolygonGeometry({
           *   polygonHierarchy : new Cesium.PolygonHierarchy(
           *     Cesium.Cartesian3.fromDegreesArray([
           *       -109.0, 30.0,
           *       -95.0, 30.0,
           *       -95.0, 40.0,
           *       -109.0, 40.0
           *     ]),
           *     [new Cesium.PolygonHierarchy(
           *       Cesium.Cartesian3.fromDegreesArray([
           *         -107.0, 31.0,
           *         -107.0, 39.0,
           *         -97.0, 39.0,
           *         -97.0, 31.0
           *       ]),
           *       [new Cesium.PolygonHierarchy(
           *         Cesium.Cartesian3.fromDegreesArray([
           *           -105.0, 33.0,
           *           -99.0, 33.0,
           *           -99.0, 37.0,
           *           -105.0, 37.0
           *         ]),
           *         [new Cesium.PolygonHierarchy(
           *           Cesium.Cartesian3.fromDegreesArray([
           *             -103.0, 34.0,
           *             -101.0, 34.0,
           *             -101.0, 36.0,
           *             -103.0, 36.0
           *           ])
           *         )]
           *       )]
           *     )]
           *   )
           * });
           * var geometry = Cesium.PolygonGeometry.createGeometry(polygonWithHole);
           *
           * // 3. create extruded polygon
           * var extrudedPolygon = new Cesium.PolygonGeometry({
           *   polygonHierarchy : new Cesium.PolygonHierarchy(
           *     Cesium.Cartesian3.fromDegreesArray([
           *       -72.0, 40.0,
           *       -70.0, 35.0,
           *       -75.0, 30.0,
           *       -70.0, 30.0,
           *       -68.0, 40.0
           *     ])
           *   ),
           *   extrudedHeight: 300000
           * });
           * var geometry = Cesium.PolygonGeometry.createGeometry(extrudedPolygon);
           */
          function PolygonGeometry(options) {
              //>>includeStart('debug', pragmas.debug);
              Check.Check.typeOf.object('options', options);
              Check.Check.typeOf.object('options.polygonHierarchy', options.polygonHierarchy);
              if (when.defined(options.perPositionHeight) && options.perPositionHeight && when.defined(options.height)) {
                  throw new Check.DeveloperError('Cannot use both options.perPositionHeight and options.height');
              }
              if (when.defined(options.arcType) && options.arcType !== ArcType.ArcType.GEODESIC && options.arcType !== ArcType.ArcType.RHUMB) {
                  throw new Check.DeveloperError('Invalid arcType. Valid options are ArcType.GEODESIC and ArcType.RHUMB.');
              }
              //>>includeEnd('debug');
  
              var polygonHierarchy = options.polygonHierarchy;
              var vertexFormat = when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT);
              var ellipsoid = when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84);
              var granularity = when.defaultValue(options.granularity, _Math.CesiumMath.RADIANS_PER_DEGREE);
              var stRotation = when.defaultValue(options.stRotation, 0.0);
              var perPositionHeight = when.defaultValue(options.perPositionHeight, false);
              var perPositionHeightExtrude = perPositionHeight && when.defined(options.extrudedHeight);
              var height = when.defaultValue(options.height, 0.0);
              var extrudedHeight = when.defaultValue(options.extrudedHeight, height);
  
              if (!perPositionHeightExtrude) {
                  var h = Math.max(height, extrudedHeight);
                  extrudedHeight = Math.min(height, extrudedHeight);
                  height = h;
              }
  
              this._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat);
              this._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid);
              this._granularity = granularity;
              this._stRotation = stRotation;
              this._height = height;
              this._extrudedHeight = extrudedHeight;
              this._closeTop = when.defaultValue(options.closeTop, true);
              this._closeBottom = when.defaultValue(options.closeBottom, true);
              this._polygonHierarchy = polygonHierarchy;
              this._perPositionHeight = perPositionHeight;
              this._perPositionHeightExtrude = perPositionHeightExtrude;
              this._shadowVolume = when.defaultValue(options.shadowVolume, false);
              this._workerName = 'createPolygonGeometry';
              this._offsetAttribute = options.offsetAttribute;
              this._arcType = when.defaultValue(options.arcType, ArcType.ArcType.GEODESIC);
  
              this._rectangle = undefined;
              this._textureCoordinateRotationPoints = undefined;
  
              /**
               * The number of elements used to pack the object into an array.
               * @type {Number}
               */
              this.packedLength = PolygonGeometryLibrary.PolygonGeometryLibrary.computeHierarchyPackedLength(polygonHierarchy) + Cartesian2.Ellipsoid.packedLength + VertexFormat.VertexFormat.packedLength + 12;
          }
  
          /**
           * A description of a polygon from an array of positions. Polygon geometry can be rendered with both {@link Primitive} and {@link GroundPrimitive}.
           *
           * @param {Object} options Object with the following properties:
           * @param {Cartesian3[]} options.positions An array of positions that defined the corner points of the polygon.
           * @param {Number} [options.height=0.0] The height of the polygon.
           * @param {Number} [options.extrudedHeight] The height of the polygon extrusion.
           * @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
           * @param {Number} [options.stRotation=0.0] The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
           * @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 {Boolean} [options.perPositionHeight=false] Use the height of options.positions for each position instead of using options.height to determine the height.
           * @param {Boolean} [options.closeTop=true] When false, leaves off the top of an extruded polygon open.
           * @param {Boolean} [options.closeBottom=true] When false, leaves off the bottom of an extruded polygon open.
           * @param {ArcType} [options.arcType=ArcType.GEODESIC] The type of line the polygon edges must follow. Valid options are {@link ArcType.GEODESIC} and {@link ArcType.RHUMB}.
           * @returns {PolygonGeometry}
           *
           *
           * @example
           * // create a polygon from points
           * var polygon = Cesium.PolygonGeometry.fromPositions({
           *   positions : Cesium.Cartesian3.fromDegreesArray([
           *     -72.0, 40.0,
           *     -70.0, 35.0,
           *     -75.0, 30.0,
           *     -70.0, 30.0,
           *     -68.0, 40.0
           *   ])
           * });
           * var geometry = Cesium.PolygonGeometry.createGeometry(polygon);
           *
           * @see PolygonGeometry#createGeometry
           */
          PolygonGeometry.fromPositions = function(options) {
              options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
  
              //>>includeStart('debug', pragmas.debug);
              Check.Check.defined('options.positions', options.positions);
              //>>includeEnd('debug');
  
              var newOptions = {
                  polygonHierarchy : {
                      positions : options.positions
                  },
                  height : options.height,
                  extrudedHeight : options.extrudedHeight,
                  vertexFormat : options.vertexFormat,
                  stRotation : options.stRotation,
                  ellipsoid : options.ellipsoid,
                  granularity : options.granularity,
                  perPositionHeight : options.perPositionHeight,
                  closeTop : options.closeTop,
                  closeBottom : options.closeBottom,
                  offsetAttribute : options.offsetAttribute,
                  arcType : options.arcType
              };
              return new PolygonGeometry(newOptions);
          };
  
          /**
           * Stores the provided instance into the provided array.
           *
           * @param {PolygonGeometry} 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
           */
          PolygonGeometry.pack = function(value, array, startingIndex) {
              //>>includeStart('debug', pragmas.debug);
              Check.Check.typeOf.object('value', value);
              Check.Check.defined('array', array);
              //>>includeEnd('debug');
  
              startingIndex = when.defaultValue(startingIndex, 0);
  
              startingIndex = PolygonGeometryLibrary.PolygonGeometryLibrary.packPolygonHierarchy(value._polygonHierarchy, array, startingIndex);
  
              Cartesian2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
              startingIndex += Cartesian2.Ellipsoid.packedLength;
  
              VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex);
              startingIndex += VertexFormat.VertexFormat.packedLength;
  
              array[startingIndex++] = value._height;
              array[startingIndex++] = value._extrudedHeight;
              array[startingIndex++] = value._granularity;
              array[startingIndex++] = value._stRotation;
              array[startingIndex++] = value._perPositionHeightExtrude ? 1.0 : 0.0;
              array[startingIndex++] = value._perPositionHeight ? 1.0 : 0.0;
              array[startingIndex++] = value._closeTop ? 1.0 : 0.0;
              array[startingIndex++] = value._closeBottom ? 1.0 : 0.0;
              array[startingIndex++] = value._shadowVolume ? 1.0 : 0.0;
              array[startingIndex++] = when.defaultValue(value._offsetAttribute, -1);
              array[startingIndex++] = value._arcType;
              array[startingIndex] = value.packedLength;
  
              return array;
          };
  
          var scratchEllipsoid = Cartesian2.Ellipsoid.clone(Cartesian2.Ellipsoid.UNIT_SPHERE);
          var scratchVertexFormat = new VertexFormat.VertexFormat();
  
          //Only used to avoid inability to default construct.
          var dummyOptions = {
              polygonHierarchy : {}
          };
  
          /**
           * 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 {PolygonGeometry} [result] The object into which to store the result.
           */
          PolygonGeometry.unpack = function(array, startingIndex, result) {
              //>>includeStart('debug', pragmas.debug);
              Check.Check.defined('array', array);
              //>>includeEnd('debug');
  
              startingIndex = when.defaultValue(startingIndex, 0);
  
              var polygonHierarchy = PolygonGeometryLibrary.PolygonGeometryLibrary.unpackPolygonHierarchy(array, startingIndex);
              startingIndex = polygonHierarchy.startingIndex;
              delete polygonHierarchy.startingIndex;
  
              var ellipsoid = Cartesian2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
              startingIndex += Cartesian2.Ellipsoid.packedLength;
  
              var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
              startingIndex += VertexFormat.VertexFormat.packedLength;
  
              var height = array[startingIndex++];
              var extrudedHeight = array[startingIndex++];
              var granularity = array[startingIndex++];
              var stRotation = array[startingIndex++];
              var perPositionHeightExtrude = array[startingIndex++] === 1.0;
              var perPositionHeight = array[startingIndex++] === 1.0;
              var closeTop = array[startingIndex++] === 1.0;
              var closeBottom = array[startingIndex++] === 1.0;
              var shadowVolume = array[startingIndex++] === 1.0;
              var offsetAttribute = array[startingIndex++];
              var arcType = array[startingIndex++];
              var packedLength = array[startingIndex];
  
              if (!when.defined(result)) {
                  result = new PolygonGeometry(dummyOptions);
              }
  
              result._polygonHierarchy = polygonHierarchy;
              result._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
              result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
              result._height = height;
              result._extrudedHeight = extrudedHeight;
              result._granularity = granularity;
              result._stRotation = stRotation;
              result._perPositionHeightExtrude = perPositionHeightExtrude;
              result._perPositionHeight = perPositionHeight;
              result._closeTop = closeTop;
              result._closeBottom = closeBottom;
              result._shadowVolume = shadowVolume;
              result._offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute;
              result._arcType = arcType;
              result.packedLength = packedLength;
              return result;
          };
  
          /**
           * Returns the bounding rectangle given the provided options
           *
           * @param {Object} options Object with the following properties:
           * @param {PolygonHierarchy} options.polygonHierarchy A polygon hierarchy that can include holes.
           * @param {Number} [options.granularity=CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions sampled.
           * @param {ArcType} [options.arcType=ArcType.GEODESIC] The type of line the polygon edges must follow. Valid options are {@link ArcType.GEODESIC} and {@link ArcType.RHUMB}.
           * @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
           * @param {Rectangle} [result] An object in which to store the result.
           *
           * @returns {Rectangle} The result rectangle
           */
          PolygonGeometry.computeRectangle = function(options, result) {
              //>>includeStart('debug', pragmas.debug);
              Check.Check.typeOf.object('options', options);
              Check.Check.typeOf.object('options.polygonHierarchy', options.polygonHierarchy);
              //>>includeEnd('debug');
  
              var granularity = when.defaultValue(options.granularity, _Math.CesiumMath.RADIANS_PER_DEGREE);
              var arcType = when.defaultValue(options.arcType, ArcType.ArcType.GEODESIC);
              //>>includeStart('debug', pragmas.debug);
              if (arcType !== ArcType.ArcType.GEODESIC && arcType !== ArcType.ArcType.RHUMB) {
                  throw new Check.DeveloperError('Invalid arcType. Valid options are ArcType.GEODESIC and ArcType.RHUMB.');
              }
              //>>includeEnd('debug');
  
              var polygonHierarchy = options.polygonHierarchy;
              var ellipsoid = when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84);
  
              return computeRectangle(polygonHierarchy.positions, ellipsoid, arcType, granularity, result);
          };
  
          /**
           * Computes the geometric representation of a polygon, including its vertices, indices, and a bounding sphere.
           *
           * @param {PolygonGeometry} polygonGeometry A description of the polygon.
           * @returns {Geometry|undefined} The computed vertices and indices.
           */
          PolygonGeometry.createGeometry = function(polygonGeometry) {
              var vertexFormat = polygonGeometry._vertexFormat;
              var ellipsoid = polygonGeometry._ellipsoid;
              var granularity = polygonGeometry._granularity;
              var stRotation = polygonGeometry._stRotation;
              var polygonHierarchy = polygonGeometry._polygonHierarchy;
              var perPositionHeight = polygonGeometry._perPositionHeight;
              var closeTop = polygonGeometry._closeTop;
              var closeBottom = polygonGeometry._closeBottom;
              var arcType = polygonGeometry._arcType;
  
              var outerPositions = polygonHierarchy.positions;
              if (outerPositions.length < 3) {
                  return;
              }
  
              var tangentPlane = EllipsoidTangentPlane.EllipsoidTangentPlane.fromPoints(outerPositions, ellipsoid);
  
              var results = PolygonGeometryLibrary.PolygonGeometryLibrary.polygonsFromHierarchy(polygonHierarchy, tangentPlane.projectPointsOntoPlane.bind(tangentPlane), !perPositionHeight, ellipsoid);
  
              var hierarchy = results.hierarchy;
              var polygons = results.polygons;
  
              if (hierarchy.length === 0) {
                  return;
              }
  
              outerPositions = hierarchy[0].outerRing;
              var boundingRectangle = PolygonGeometryLibrary.PolygonGeometryLibrary.computeBoundingRectangle(tangentPlane.plane.normal, tangentPlane.projectPointOntoPlane.bind(tangentPlane), outerPositions, stRotation, scratchBoundingRectangle);
  
              var geometries = [];
  
              var height = polygonGeometry._height;
              var extrudedHeight = polygonGeometry._extrudedHeight;
              var extrude = polygonGeometry._perPositionHeightExtrude || !_Math.CesiumMath.equalsEpsilon(height, extrudedHeight, 0, _Math.CesiumMath.EPSILON2);
  
              var options = {
                  perPositionHeight: perPositionHeight,
                  vertexFormat: vertexFormat,
                  geometry: undefined,
                  tangentPlane: tangentPlane,
                  boundingRectangle: boundingRectangle,
                  ellipsoid: ellipsoid,
                  stRotation: stRotation,
                  bottom: false,
                  top: true,
                  wall: false,
                  extrude: false,
                  arcType: arcType
              };
  
              var i;
  
              if (extrude) {
                  options.extrude = true;
                  options.top = closeTop;
                  options.bottom = closeBottom;
                  options.shadowVolume = polygonGeometry._shadowVolume;
                  options.offsetAttribute = polygonGeometry._offsetAttribute;
                  for (i = 0; i < polygons.length; i++) {
                      var splitGeometry = createGeometryFromPositionsExtruded(ellipsoid, polygons[i], granularity, hierarchy[i], perPositionHeight, closeTop, closeBottom, vertexFormat, arcType);
  
                      var topAndBottom;
                      if (closeTop && closeBottom) {
                          topAndBottom = splitGeometry.topAndBottom;
                          options.geometry = PolygonGeometryLibrary.PolygonGeometryLibrary.scaleToGeodeticHeightExtruded(topAndBottom.geometry, height, extrudedHeight, ellipsoid, perPositionHeight);
                      } else if (closeTop) {
                          topAndBottom = splitGeometry.topAndBottom;
                          topAndBottom.geometry.attributes.position.values = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(topAndBottom.geometry.attributes.position.values, height, ellipsoid, !perPositionHeight);
                          options.geometry = topAndBottom.geometry;
                      } else if (closeBottom) {
                          topAndBottom = splitGeometry.topAndBottom;
                          topAndBottom.geometry.attributes.position.values = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(topAndBottom.geometry.attributes.position.values, extrudedHeight, ellipsoid, true);
                          options.geometry = topAndBottom.geometry;
                      }
                      if (closeTop || closeBottom) {
                          options.wall = false;
                          topAndBottom.geometry = computeAttributes(options);
                          geometries.push(topAndBottom);
                      }
  
                      var walls = splitGeometry.walls;
                      options.wall = true;
                      for ( var k = 0; k < walls.length; k++) {
                          var wall = walls[k];
                          options.geometry = PolygonGeometryLibrary.PolygonGeometryLibrary.scaleToGeodeticHeightExtruded(wall.geometry, height, extrudedHeight, ellipsoid, perPositionHeight);
                          wall.geometry = computeAttributes(options);
                          geometries.push(wall);
                      }
                  }
              } else {
                  for (i = 0; i < polygons.length; i++) {
                      var geometryInstance = new GeometryInstance.GeometryInstance({
                          geometry : PolygonGeometryLibrary.PolygonGeometryLibrary.createGeometryFromPositions(ellipsoid, polygons[i], granularity, perPositionHeight, vertexFormat, arcType)
                      });
                      geometryInstance.geometry.attributes.position.values = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(geometryInstance.geometry.attributes.position.values, height, ellipsoid, !perPositionHeight);
                      options.geometry = geometryInstance.geometry;
                      geometryInstance.geometry = computeAttributes(options);
  
                      if (when.defined(polygonGeometry._offsetAttribute)) {
                          var length = geometryInstance.geometry.attributes.position.values.length;
                          var applyOffset = new Uint8Array(length / 3);
                          var offsetValue = polygonGeometry._offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE ? 0 : 1;
                          GeometryOffsetAttribute.arrayFill(applyOffset, offsetValue);
                          geometryInstance.geometry.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
                              componentDatatype : ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
                              componentsPerAttribute : 1,
                              values: applyOffset
                          });
                      }
  
                      geometries.push(geometryInstance);
                  }
              }
  
              var geometry = GeometryPipeline.GeometryPipeline.combineInstances(geometries)[0];
              geometry.attributes.position.values = new Float64Array(geometry.attributes.position.values);
              geometry.indices = IndexDatatype.IndexDatatype.createTypedArray(geometry.attributes.position.values.length / 3, geometry.indices);
  
              var attributes = geometry.attributes;
              var boundingSphere = Transforms.BoundingSphere.fromVertices(attributes.position.values);
  
              if (!vertexFormat.position) {
                  delete attributes.position;
              }
  
              return new GeometryAttribute.Geometry({
                  attributes : attributes,
                  indices : geometry.indices,
                  primitiveType : geometry.primitiveType,
                  boundingSphere : boundingSphere,
                  offsetAttribute : polygonGeometry._offsetAttribute
              });
          };
  
          /**
           * @private
           */
          PolygonGeometry.createShadowVolume = function(polygonGeometry, minHeightFunc, maxHeightFunc) {
              var granularity = polygonGeometry._granularity;
              var ellipsoid = polygonGeometry._ellipsoid;
  
              var minHeight = minHeightFunc(granularity, ellipsoid);
              var maxHeight = maxHeightFunc(granularity, ellipsoid);
  
              return new PolygonGeometry({
                  polygonHierarchy : polygonGeometry._polygonHierarchy,
                  ellipsoid : ellipsoid,
                  stRotation : polygonGeometry._stRotation,
                  granularity : granularity,
                  perPositionHeight : false,
                  extrudedHeight : minHeight,
                  height : maxHeight,
                  vertexFormat : VertexFormat.VertexFormat.POSITION_ONLY,
                  shadowVolume: true,
                  arcType : polygonGeometry._arcType
              });
          };
  
          function textureCoordinateRotationPoints(polygonGeometry) {
              var stRotation = -polygonGeometry._stRotation;
              if (stRotation === 0.0) {
                  return [0, 0, 0, 1, 1, 0];
              }
              var ellipsoid = polygonGeometry._ellipsoid;
              var positions = polygonGeometry._polygonHierarchy.positions;
              var boundingRectangle = polygonGeometry.rectangle;
              return GeometryAttribute.Geometry._textureCoordinateRotationPoints(positions, stRotation, ellipsoid, boundingRectangle);
          }
  
          Object.defineProperties(PolygonGeometry.prototype, {
              /**
               * @private
               */
              rectangle : {
                  get : function() {
                      if (!when.defined(this._rectangle)) {
                          var positions = this._polygonHierarchy.positions;
                          this._rectangle = computeRectangle(positions, this._ellipsoid, this._arcType, this._granularity);
                      }
  
                      return this._rectangle;
                  }
              },
              /**
               * For remapping texture coordinates when rendering PolygonGeometries as GroundPrimitives.
               * @private
               */
              textureCoordinateRotationPoints : {
                  get : function() {
                      if (!when.defined(this._textureCoordinateRotationPoints)) {
                          this._textureCoordinateRotationPoints = textureCoordinateRotationPoints(this);
                      }
                      return this._textureCoordinateRotationPoints;
                  }
              }
          });
  
      function createPolygonGeometry(polygonGeometry, offset) {
              if (when.defined(offset)) {
                  polygonGeometry = PolygonGeometry.unpack(polygonGeometry, offset);
              }
              polygonGeometry._ellipsoid = Cartesian2.Ellipsoid.clone(polygonGeometry._ellipsoid);
              return PolygonGeometry.createGeometry(polygonGeometry);
          }
  
      return createPolygonGeometry;
  
  });
  //# sourceMappingURL=createPolygonGeometry.js.map
  