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-54335d57', './Cartesian2-e7502022', './GeometryOffsetAttribute-626d552a', './Transforms-1ede5d55', './Check-24483042', './ComponentDatatype-cac6b6fa', './GeometryAttribute-66bc2a8a', './GeometryAttributes-caa08d6c', './GeometryInstance-13f7ea33', './GeometryPipeline-3c039123', './IndexDatatype-a6fe1d66', './Math-34872ab7', './PolygonPipeline-86c5bccd', './RectangleGeometryLibrary-1970f70e', './VertexFormat-525c7b79', './RuntimeError-88a32665', './WebGLConstants-95ceb4e9', './AttributeCompression-9ad7a83d', './EncodedCartesian3-8b34fcf2', './IntersectionTests-94f3c1ad', './Plane-e75c0031', './EllipsoidRhumbLine-be131462'], function (when, Cartesian2, GeometryOffsetAttribute, Transforms, Check, ComponentDatatype, GeometryAttribute, GeometryAttributes, GeometryInstance, GeometryPipeline, IndexDatatype, _Math, PolygonPipeline, RectangleGeometryLibrary, VertexFormat, RuntimeError, WebGLConstants, AttributeCompression, EncodedCartesian3, IntersectionTests, Plane, EllipsoidRhumbLine) { 'use strict';
  
    var positionScratch = new Cartesian2.Cartesian3();
    var normalScratch = new Cartesian2.Cartesian3();
    var tangentScratch = new Cartesian2.Cartesian3();
    var bitangentScratch = new Cartesian2.Cartesian3();
    var rectangleScratch = new Cartesian2.Rectangle();
    var stScratch = new Cartesian2.Cartesian2();
    var bottomBoundingSphere = new Transforms.BoundingSphere();
    var topBoundingSphere = new Transforms.BoundingSphere();
  
    function createAttributes(vertexFormat, attributes) {
      var geo = new GeometryAttribute.Geometry({
        attributes: new GeometryAttributes.GeometryAttributes(),
        primitiveType: GeometryAttribute.PrimitiveType.TRIANGLES,
      });
  
      geo.attributes.position = new GeometryAttribute.GeometryAttribute({
        componentDatatype: ComponentDatatype.ComponentDatatype.DOUBLE,
        componentsPerAttribute: 3,
        values: attributes.positions,
      });
      if (vertexFormat.normal) {
        geo.attributes.normal = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
          componentsPerAttribute: 3,
          values: attributes.normals,
        });
      }
      if (vertexFormat.tangent) {
        geo.attributes.tangent = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
          componentsPerAttribute: 3,
          values: attributes.tangents,
        });
      }
      if (vertexFormat.bitangent) {
        geo.attributes.bitangent = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
          componentsPerAttribute: 3,
          values: attributes.bitangents,
        });
      }
      return geo;
    }
  
    function calculateAttributes(
      positions,
      vertexFormat,
      ellipsoid,
      tangentRotationMatrix
    ) {
      var length = positions.length;
  
      var normals = vertexFormat.normal ? new Float32Array(length) : undefined;
      var tangents = vertexFormat.tangent ? new Float32Array(length) : undefined;
      var bitangents = vertexFormat.bitangent
        ? new Float32Array(length)
        : undefined;
  
      var attrIndex = 0;
      var bitangent = bitangentScratch;
      var tangent = tangentScratch;
      var normal = normalScratch;
      if (vertexFormat.normal || vertexFormat.tangent || vertexFormat.bitangent) {
        for (var i = 0; i < length; i += 3) {
          var p = Cartesian2.Cartesian3.fromArray(positions, i, positionScratch);
          var attrIndex1 = attrIndex + 1;
          var attrIndex2 = attrIndex + 2;
  
          normal = ellipsoid.geodeticSurfaceNormal(p, normal);
          if (vertexFormat.tangent || vertexFormat.bitangent) {
            Cartesian2.Cartesian3.cross(Cartesian2.Cartesian3.UNIT_Z, normal, tangent);
            Transforms.Matrix3.multiplyByVector(tangentRotationMatrix, tangent, tangent);
            Cartesian2.Cartesian3.normalize(tangent, tangent);
  
            if (vertexFormat.bitangent) {
              Cartesian2.Cartesian3.normalize(
                Cartesian2.Cartesian3.cross(normal, tangent, bitangent),
                bitangent
              );
            }
          }
  
          if (vertexFormat.normal) {
            normals[attrIndex] = normal.x;
            normals[attrIndex1] = normal.y;
            normals[attrIndex2] = normal.z;
          }
          if (vertexFormat.tangent) {
            tangents[attrIndex] = tangent.x;
            tangents[attrIndex1] = tangent.y;
            tangents[attrIndex2] = tangent.z;
          }
          if (vertexFormat.bitangent) {
            bitangents[attrIndex] = bitangent.x;
            bitangents[attrIndex1] = bitangent.y;
            bitangents[attrIndex2] = bitangent.z;
          }
          attrIndex += 3;
        }
      }
      return createAttributes(vertexFormat, {
        positions: positions,
        normals: normals,
        tangents: tangents,
        bitangents: bitangents,
      });
    }
  
    var v1Scratch = new Cartesian2.Cartesian3();
    var v2Scratch = new Cartesian2.Cartesian3();
  
    function calculateAttributesWall(positions, vertexFormat, ellipsoid) {
      var length = positions.length;
  
      var normals = vertexFormat.normal ? new Float32Array(length) : undefined;
      var tangents = vertexFormat.tangent ? new Float32Array(length) : undefined;
      var bitangents = vertexFormat.bitangent
        ? new Float32Array(length)
        : undefined;
  
      var normalIndex = 0;
      var tangentIndex = 0;
      var bitangentIndex = 0;
      var recomputeNormal = true;
  
      var bitangent = bitangentScratch;
      var tangent = tangentScratch;
      var normal = normalScratch;
      if (vertexFormat.normal || vertexFormat.tangent || vertexFormat.bitangent) {
        for (var i = 0; i < length; i += 6) {
          var p = Cartesian2.Cartesian3.fromArray(positions, i, positionScratch);
          var p1 = Cartesian2.Cartesian3.fromArray(positions, (i + 6) % length, v1Scratch);
          if (recomputeNormal) {
            var p2 = Cartesian2.Cartesian3.fromArray(positions, (i + 3) % length, v2Scratch);
            Cartesian2.Cartesian3.subtract(p1, p, p1);
            Cartesian2.Cartesian3.subtract(p2, p, p2);
            normal = Cartesian2.Cartesian3.normalize(Cartesian2.Cartesian3.cross(p2, p1, normal), normal);
            recomputeNormal = false;
          }
  
          if (Cartesian2.Cartesian3.equalsEpsilon(p1, p, _Math.CesiumMath.EPSILON10)) {
            // if we've reached a corner
            recomputeNormal = true;
          }
  
          if (vertexFormat.tangent || vertexFormat.bitangent) {
            bitangent = ellipsoid.geodeticSurfaceNormal(p, bitangent);
            if (vertexFormat.tangent) {
              tangent = Cartesian2.Cartesian3.normalize(
                Cartesian2.Cartesian3.cross(bitangent, normal, tangent),
                tangent
              );
            }
          }
  
          if (vertexFormat.normal) {
            normals[normalIndex++] = normal.x;
            normals[normalIndex++] = normal.y;
            normals[normalIndex++] = normal.z;
            normals[normalIndex++] = normal.x;
            normals[normalIndex++] = normal.y;
            normals[normalIndex++] = normal.z;
          }
  
          if (vertexFormat.tangent) {
            tangents[tangentIndex++] = tangent.x;
            tangents[tangentIndex++] = tangent.y;
            tangents[tangentIndex++] = tangent.z;
            tangents[tangentIndex++] = tangent.x;
            tangents[tangentIndex++] = tangent.y;
            tangents[tangentIndex++] = tangent.z;
          }
  
          if (vertexFormat.bitangent) {
            bitangents[bitangentIndex++] = bitangent.x;
            bitangents[bitangentIndex++] = bitangent.y;
            bitangents[bitangentIndex++] = bitangent.z;
            bitangents[bitangentIndex++] = bitangent.x;
            bitangents[bitangentIndex++] = bitangent.y;
            bitangents[bitangentIndex++] = bitangent.z;
          }
        }
      }
  
      return createAttributes(vertexFormat, {
        positions: positions,
        normals: normals,
        tangents: tangents,
        bitangents: bitangents,
      });
    }
  
    function constructRectangle(rectangleGeometry, computedOptions) {
      var vertexFormat = rectangleGeometry._vertexFormat;
      var ellipsoid = rectangleGeometry._ellipsoid;
      var height = computedOptions.height;
      var width = computedOptions.width;
      var northCap = computedOptions.northCap;
      var southCap = computedOptions.southCap;
  
      var rowStart = 0;
      var rowEnd = height;
      var rowHeight = height;
      var size = 0;
      if (northCap) {
        rowStart = 1;
        rowHeight -= 1;
        size += 1;
      }
      if (southCap) {
        rowEnd -= 1;
        rowHeight -= 1;
        size += 1;
      }
      size += width * rowHeight;
  
      var positions = vertexFormat.position
        ? new Float64Array(size * 3)
        : undefined;
      var textureCoordinates = vertexFormat.st
        ? new Float32Array(size * 2)
        : undefined;
  
      var posIndex = 0;
      var stIndex = 0;
  
      var position = positionScratch;
      var st = stScratch;
  
      var minX = Number.MAX_VALUE;
      var minY = Number.MAX_VALUE;
      var maxX = -Number.MAX_VALUE;
      var maxY = -Number.MAX_VALUE;
  
      for (var row = rowStart; row < rowEnd; ++row) {
        for (var col = 0; col < width; ++col) {
          RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(
            computedOptions,
            ellipsoid,
            vertexFormat.st,
            row,
            col,
            position,
            st
          );
  
          positions[posIndex++] = position.x;
          positions[posIndex++] = position.y;
          positions[posIndex++] = position.z;
  
          if (vertexFormat.st) {
            textureCoordinates[stIndex++] = st.x;
            textureCoordinates[stIndex++] = st.y;
  
            minX = Math.min(minX, st.x);
            minY = Math.min(minY, st.y);
            maxX = Math.max(maxX, st.x);
            maxY = Math.max(maxY, st.y);
          }
        }
      }
      if (northCap) {
        RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(
          computedOptions,
          ellipsoid,
          vertexFormat.st,
          0,
          0,
          position,
          st
        );
  
        positions[posIndex++] = position.x;
        positions[posIndex++] = position.y;
        positions[posIndex++] = position.z;
  
        if (vertexFormat.st) {
          textureCoordinates[stIndex++] = st.x;
          textureCoordinates[stIndex++] = st.y;
  
          minX = st.x;
          minY = st.y;
          maxX = st.x;
          maxY = st.y;
        }
      }
      if (southCap) {
        RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(
          computedOptions,
          ellipsoid,
          vertexFormat.st,
          height - 1,
          0,
          position,
          st
        );
  
        positions[posIndex++] = position.x;
        positions[posIndex++] = position.y;
        positions[posIndex] = position.z;
  
        if (vertexFormat.st) {
          textureCoordinates[stIndex++] = st.x;
          textureCoordinates[stIndex] = st.y;
  
          minX = Math.min(minX, st.x);
          minY = Math.min(minY, st.y);
          maxX = Math.max(maxX, st.x);
          maxY = Math.max(maxY, st.y);
        }
      }
  
      if (
        vertexFormat.st &&
        (minX < 0.0 || minY < 0.0 || maxX > 1.0 || maxY > 1.0)
      ) {
        for (var k = 0; k < textureCoordinates.length; k += 2) {
          textureCoordinates[k] = (textureCoordinates[k] - minX) / (maxX - minX);
          textureCoordinates[k + 1] =
            (textureCoordinates[k + 1] - minY) / (maxY - minY);
        }
      }
  
      var geo = calculateAttributes(
        positions,
        vertexFormat,
        ellipsoid,
        computedOptions.tangentRotationMatrix
      );
  
      var indicesSize = 6 * (width - 1) * (rowHeight - 1);
      if (northCap) {
        indicesSize += 3 * (width - 1);
      }
      if (southCap) {
        indicesSize += 3 * (width - 1);
      }
      var indices = IndexDatatype.IndexDatatype.createTypedArray(size, indicesSize);
      var index = 0;
      var indicesIndex = 0;
      var i;
      for (i = 0; i < rowHeight - 1; ++i) {
        for (var j = 0; j < width - 1; ++j) {
          var upperLeft = index;
          var lowerLeft = upperLeft + width;
          var lowerRight = lowerLeft + 1;
          var upperRight = upperLeft + 1;
          indices[indicesIndex++] = upperLeft;
          indices[indicesIndex++] = lowerLeft;
          indices[indicesIndex++] = upperRight;
          indices[indicesIndex++] = upperRight;
          indices[indicesIndex++] = lowerLeft;
          indices[indicesIndex++] = lowerRight;
          ++index;
        }
        ++index;
      }
      if (northCap || southCap) {
        var northIndex = size - 1;
        var southIndex = size - 1;
        if (northCap && southCap) {
          northIndex = size - 2;
        }
  
        var p1;
        var p2;
        index = 0;
  
        if (northCap) {
          for (i = 0; i < width - 1; i++) {
            p1 = index;
            p2 = p1 + 1;
            indices[indicesIndex++] = northIndex;
            indices[indicesIndex++] = p1;
            indices[indicesIndex++] = p2;
            ++index;
          }
        }
        if (southCap) {
          index = (rowHeight - 1) * width;
          for (i = 0; i < width - 1; i++) {
            p1 = index;
            p2 = p1 + 1;
            indices[indicesIndex++] = p1;
            indices[indicesIndex++] = southIndex;
            indices[indicesIndex++] = p2;
            ++index;
          }
        }
      }
  
      geo.indices = indices;
      if (vertexFormat.st) {
        geo.attributes.st = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
          componentsPerAttribute: 2,
          values: textureCoordinates,
        });
      }
  
      return geo;
    }
  
    function addWallPositions(
      wallPositions,
      posIndex,
      i,
      topPositions,
      bottomPositions
    ) {
      wallPositions[posIndex++] = topPositions[i];
      wallPositions[posIndex++] = topPositions[i + 1];
      wallPositions[posIndex++] = topPositions[i + 2];
      wallPositions[posIndex++] = bottomPositions[i];
      wallPositions[posIndex++] = bottomPositions[i + 1];
      wallPositions[posIndex] = bottomPositions[i + 2];
      return wallPositions;
    }
  
    function addWallTextureCoordinates(wallTextures, stIndex, i, st) {
      wallTextures[stIndex++] = st[i];
      wallTextures[stIndex++] = st[i + 1];
      wallTextures[stIndex++] = st[i];
      wallTextures[stIndex] = st[i + 1];
      return wallTextures;
    }
  
    var scratchVertexFormat = new VertexFormat.VertexFormat();
  
    function constructExtrudedRectangle(rectangleGeometry, computedOptions) {
      var shadowVolume = rectangleGeometry._shadowVolume;
      var offsetAttributeValue = rectangleGeometry._offsetAttribute;
      var vertexFormat = rectangleGeometry._vertexFormat;
      var minHeight = rectangleGeometry._extrudedHeight;
      var maxHeight = rectangleGeometry._surfaceHeight;
      var ellipsoid = rectangleGeometry._ellipsoid;
  
      var height = computedOptions.height;
      var width = computedOptions.width;
  
      var i;
  
      if (shadowVolume) {
        var newVertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, scratchVertexFormat);
        newVertexFormat.normal = true;
        rectangleGeometry._vertexFormat = newVertexFormat;
      }
  
      var topBottomGeo = constructRectangle(rectangleGeometry, computedOptions);
  
      if (shadowVolume) {
        rectangleGeometry._vertexFormat = vertexFormat;
      }
  
      var topPositions = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(
        topBottomGeo.attributes.position.values,
        maxHeight,
        ellipsoid,
        false
      );
      topPositions = new Float64Array(topPositions);
      var length = topPositions.length;
      var newLength = length * 2;
      var positions = new Float64Array(newLength);
      positions.set(topPositions);
      var bottomPositions = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(
        topBottomGeo.attributes.position.values,
        minHeight,
        ellipsoid
      );
      positions.set(bottomPositions, length);
      topBottomGeo.attributes.position.values = positions;
  
      var normals = vertexFormat.normal ? new Float32Array(newLength) : undefined;
      var tangents = vertexFormat.tangent ? new Float32Array(newLength) : undefined;
      var bitangents = vertexFormat.bitangent
        ? new Float32Array(newLength)
        : undefined;
      var textures = vertexFormat.st
        ? new Float32Array((newLength / 3) * 2)
        : undefined;
      var topSt;
      var topNormals;
      if (vertexFormat.normal) {
        topNormals = topBottomGeo.attributes.normal.values;
        normals.set(topNormals);
        for (i = 0; i < length; i++) {
          topNormals[i] = -topNormals[i];
        }
        normals.set(topNormals, length);
        topBottomGeo.attributes.normal.values = normals;
      }
      if (shadowVolume) {
        topNormals = topBottomGeo.attributes.normal.values;
        if (!vertexFormat.normal) {
          topBottomGeo.attributes.normal = undefined;
        }
        var extrudeNormals = new Float32Array(newLength);
        for (i = 0; i < length; i++) {
          topNormals[i] = -topNormals[i];
        }
        extrudeNormals.set(topNormals, length); //only get normals for bottom layer that's going to be pushed down
        topBottomGeo.attributes.extrudeDirection = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
          componentsPerAttribute: 3,
          values: extrudeNormals,
        });
      }
  
      var offsetValue;
      var hasOffsets = when.defined(offsetAttributeValue);
      if (hasOffsets) {
        var size = (length / 3) * 2;
        var offsetAttribute = new Uint8Array(size);
        if (offsetAttributeValue === GeometryOffsetAttribute.GeometryOffsetAttribute.TOP) {
          offsetAttribute = GeometryOffsetAttribute.arrayFill(offsetAttribute, 1, 0, size / 2);
        } else {
          offsetValue =
            offsetAttributeValue === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE ? 0 : 1;
          offsetAttribute = GeometryOffsetAttribute.arrayFill(offsetAttribute, offsetValue);
        }
  
        topBottomGeo.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
          componentsPerAttribute: 1,
          values: offsetAttribute,
        });
      }
  
      if (vertexFormat.tangent) {
        var topTangents = topBottomGeo.attributes.tangent.values;
        tangents.set(topTangents);
        for (i = 0; i < length; i++) {
          topTangents[i] = -topTangents[i];
        }
        tangents.set(topTangents, length);
        topBottomGeo.attributes.tangent.values = tangents;
      }
      if (vertexFormat.bitangent) {
        var topBitangents = topBottomGeo.attributes.bitangent.values;
        bitangents.set(topBitangents);
        bitangents.set(topBitangents, length);
        topBottomGeo.attributes.bitangent.values = bitangents;
      }
      if (vertexFormat.st) {
        topSt = topBottomGeo.attributes.st.values;
        textures.set(topSt);
        textures.set(topSt, (length / 3) * 2);
        topBottomGeo.attributes.st.values = textures;
      }
  
      var indices = topBottomGeo.indices;
      var indicesLength = indices.length;
      var posLength = length / 3;
      var newIndices = IndexDatatype.IndexDatatype.createTypedArray(
        newLength / 3,
        indicesLength * 2
      );
      newIndices.set(indices);
      for (i = 0; i < indicesLength; i += 3) {
        newIndices[i + indicesLength] = indices[i + 2] + posLength;
        newIndices[i + 1 + indicesLength] = indices[i + 1] + posLength;
        newIndices[i + 2 + indicesLength] = indices[i] + posLength;
      }
      topBottomGeo.indices = newIndices;
  
      var northCap = computedOptions.northCap;
      var southCap = computedOptions.southCap;
  
      var rowHeight = height;
      var widthMultiplier = 2;
      var perimeterPositions = 0;
      var corners = 4;
      var dupliateCorners = 4;
      if (northCap) {
        widthMultiplier -= 1;
        rowHeight -= 1;
        perimeterPositions += 1;
        corners -= 2;
        dupliateCorners -= 1;
      }
      if (southCap) {
        widthMultiplier -= 1;
        rowHeight -= 1;
        perimeterPositions += 1;
        corners -= 2;
        dupliateCorners -= 1;
      }
      perimeterPositions += widthMultiplier * width + 2 * rowHeight - corners;
  
      var wallCount = (perimeterPositions + dupliateCorners) * 2;
  
      var wallPositions = new Float64Array(wallCount * 3);
      var wallExtrudeNormals = shadowVolume
        ? new Float32Array(wallCount * 3)
        : undefined;
      var wallOffsetAttribute = hasOffsets ? new Uint8Array(wallCount) : undefined;
      var wallTextures = vertexFormat.st
        ? new Float32Array(wallCount * 2)
        : undefined;
  
      var computeTopOffsets = offsetAttributeValue === GeometryOffsetAttribute.GeometryOffsetAttribute.TOP;
      if (hasOffsets && !computeTopOffsets) {
        offsetValue = offsetAttributeValue === GeometryOffsetAttribute.GeometryOffsetAttribute.ALL ? 1 : 0;
        wallOffsetAttribute = GeometryOffsetAttribute.arrayFill(wallOffsetAttribute, offsetValue);
      }
  
      var posIndex = 0;
      var stIndex = 0;
      var extrudeNormalIndex = 0;
      var wallOffsetIndex = 0;
      var area = width * rowHeight;
      var threeI;
      for (i = 0; i < area; i += width) {
        threeI = i * 3;
        wallPositions = addWallPositions(
          wallPositions,
          posIndex,
          threeI,
          topPositions,
          bottomPositions
        );
        posIndex += 6;
        if (vertexFormat.st) {
          wallTextures = addWallTextureCoordinates(
            wallTextures,
            stIndex,
            i * 2,
            topSt
          );
          stIndex += 4;
        }
        if (shadowVolume) {
          extrudeNormalIndex += 3;
          wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI];
          wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 1];
          wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 2];
        }
        if (computeTopOffsets) {
          wallOffsetAttribute[wallOffsetIndex++] = 1;
          wallOffsetIndex += 1;
        }
      }
  
      if (!southCap) {
        for (i = area - width; i < area; i++) {
          threeI = i * 3;
          wallPositions = addWallPositions(
            wallPositions,
            posIndex,
            threeI,
            topPositions,
            bottomPositions
          );
          posIndex += 6;
          if (vertexFormat.st) {
            wallTextures = addWallTextureCoordinates(
              wallTextures,
              stIndex,
              i * 2,
              topSt
            );
            stIndex += 4;
          }
          if (shadowVolume) {
            extrudeNormalIndex += 3;
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 1];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 2];
          }
          if (computeTopOffsets) {
            wallOffsetAttribute[wallOffsetIndex++] = 1;
            wallOffsetIndex += 1;
          }
        }
      } else {
        var southIndex = northCap ? area + 1 : area;
        threeI = southIndex * 3;
  
        for (i = 0; i < 2; i++) {
          // duplicate corner points
          wallPositions = addWallPositions(
            wallPositions,
            posIndex,
            threeI,
            topPositions,
            bottomPositions
          );
          posIndex += 6;
          if (vertexFormat.st) {
            wallTextures = addWallTextureCoordinates(
              wallTextures,
              stIndex,
              southIndex * 2,
              topSt
            );
            stIndex += 4;
          }
          if (shadowVolume) {
            extrudeNormalIndex += 3;
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 1];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 2];
          }
          if (computeTopOffsets) {
            wallOffsetAttribute[wallOffsetIndex++] = 1;
            wallOffsetIndex += 1;
          }
        }
      }
  
      for (i = area - 1; i > 0; i -= width) {
        threeI = i * 3;
        wallPositions = addWallPositions(
          wallPositions,
          posIndex,
          threeI,
          topPositions,
          bottomPositions
        );
        posIndex += 6;
        if (vertexFormat.st) {
          wallTextures = addWallTextureCoordinates(
            wallTextures,
            stIndex,
            i * 2,
            topSt
          );
          stIndex += 4;
        }
        if (shadowVolume) {
          extrudeNormalIndex += 3;
          wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI];
          wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 1];
          wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 2];
        }
        if (computeTopOffsets) {
          wallOffsetAttribute[wallOffsetIndex++] = 1;
          wallOffsetIndex += 1;
        }
      }
  
      if (!northCap) {
        for (i = width - 1; i >= 0; i--) {
          threeI = i * 3;
          wallPositions = addWallPositions(
            wallPositions,
            posIndex,
            threeI,
            topPositions,
            bottomPositions
          );
          posIndex += 6;
          if (vertexFormat.st) {
            wallTextures = addWallTextureCoordinates(
              wallTextures,
              stIndex,
              i * 2,
              topSt
            );
            stIndex += 4;
          }
          if (shadowVolume) {
            extrudeNormalIndex += 3;
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 1];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 2];
          }
          if (computeTopOffsets) {
            wallOffsetAttribute[wallOffsetIndex++] = 1;
            wallOffsetIndex += 1;
          }
        }
      } else {
        var northIndex = area;
        threeI = northIndex * 3;
  
        for (i = 0; i < 2; i++) {
          // duplicate corner points
          wallPositions = addWallPositions(
            wallPositions,
            posIndex,
            threeI,
            topPositions,
            bottomPositions
          );
          posIndex += 6;
          if (vertexFormat.st) {
            wallTextures = addWallTextureCoordinates(
              wallTextures,
              stIndex,
              northIndex * 2,
              topSt
            );
            stIndex += 4;
          }
          if (shadowVolume) {
            extrudeNormalIndex += 3;
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 1];
            wallExtrudeNormals[extrudeNormalIndex++] = topNormals[threeI + 2];
          }
          if (computeTopOffsets) {
            wallOffsetAttribute[wallOffsetIndex++] = 1;
            wallOffsetIndex += 1;
          }
        }
      }
  
      var geo = calculateAttributesWall(wallPositions, vertexFormat, ellipsoid);
  
      if (vertexFormat.st) {
        geo.attributes.st = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
          componentsPerAttribute: 2,
          values: wallTextures,
        });
      }
      if (shadowVolume) {
        geo.attributes.extrudeDirection = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.FLOAT,
          componentsPerAttribute: 3,
          values: wallExtrudeNormals,
        });
      }
      if (hasOffsets) {
        geo.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
          componentDatatype: ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
          componentsPerAttribute: 1,
          values: wallOffsetAttribute,
        });
      }
  
      var wallIndices = IndexDatatype.IndexDatatype.createTypedArray(
        wallCount,
        perimeterPositions * 6
      );
  
      var upperLeft;
      var lowerLeft;
      var lowerRight;
      var upperRight;
      length = wallPositions.length / 3;
      var index = 0;
      for (i = 0; i < length - 1; i += 2) {
        upperLeft = i;
        upperRight = (upperLeft + 2) % length;
        var p1 = Cartesian2.Cartesian3.fromArray(wallPositions, upperLeft * 3, v1Scratch);
        var p2 = Cartesian2.Cartesian3.fromArray(wallPositions, upperRight * 3, v2Scratch);
        if (Cartesian2.Cartesian3.equalsEpsilon(p1, p2, _Math.CesiumMath.EPSILON10)) {
          continue;
        }
        lowerLeft = (upperLeft + 1) % length;
        lowerRight = (lowerLeft + 2) % length;
        wallIndices[index++] = upperLeft;
        wallIndices[index++] = lowerLeft;
        wallIndices[index++] = upperRight;
        wallIndices[index++] = upperRight;
        wallIndices[index++] = lowerLeft;
        wallIndices[index++] = lowerRight;
      }
  
      geo.indices = wallIndices;
  
      geo = GeometryPipeline.GeometryPipeline.combineInstances([
        new GeometryInstance.GeometryInstance({
          geometry: topBottomGeo,
        }),
        new GeometryInstance.GeometryInstance({
          geometry: geo,
        }),
      ]);
  
      return geo[0];
    }
  
    var scratchRectanglePoints = [
      new Cartesian2.Cartesian3(),
      new Cartesian2.Cartesian3(),
      new Cartesian2.Cartesian3(),
      new Cartesian2.Cartesian3(),
    ];
    var nwScratch = new Cartesian2.Cartographic();
    var stNwScratch = new Cartesian2.Cartographic();
    function computeRectangle(rectangle, granularity, rotation, ellipsoid, result) {
      if (rotation === 0.0) {
        return Cartesian2.Rectangle.clone(rectangle, result);
      }
  
      var computedOptions = RectangleGeometryLibrary.RectangleGeometryLibrary.computeOptions(
        rectangle,
        granularity,
        rotation,
        0,
        rectangleScratch,
        nwScratch
      );
  
      var height = computedOptions.height;
      var width = computedOptions.width;
  
      var positions = scratchRectanglePoints;
      RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(
        computedOptions,
        ellipsoid,
        false,
        0,
        0,
        positions[0]
      );
      RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(
        computedOptions,
        ellipsoid,
        false,
        0,
        width - 1,
        positions[1]
      );
      RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(
        computedOptions,
        ellipsoid,
        false,
        height - 1,
        0,
        positions[2]
      );
      RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(
        computedOptions,
        ellipsoid,
        false,
        height - 1,
        width - 1,
        positions[3]
      );
  
      return Cartesian2.Rectangle.fromCartesianArray(positions, ellipsoid, result);
    }
  
    /**
     * A description of a cartographic rectangle on an ellipsoid centered at the origin. Rectangle geometry can be rendered with both {@link Primitive} and {@link GroundPrimitive}.
     *
     * @alias RectangleGeometry
     * @constructor
     *
     * @param {Object} options Object with the following properties:
     * @param {Rectangle} options.rectangle A cartographic rectangle with north, south, east and west properties in radians.
     * @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
     * @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the rectangle lies.
     * @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 {Number} [options.height=0.0] The distance in meters between the rectangle and the ellipsoid surface.
     * @param {Number} [options.rotation=0.0] The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
     * @param {Number} [options.stRotation=0.0] The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
     * @param {Number} [options.extrudedHeight] The distance in meters between the rectangle's extruded face and the ellipsoid surface.
     *
     * @exception {DeveloperError} <code>options.rectangle.north</code> must be in the interval [<code>-Pi/2</code>, <code>Pi/2</code>].
     * @exception {DeveloperError} <code>options.rectangle.south</code> must be in the interval [<code>-Pi/2</code>, <code>Pi/2</code>].
     * @exception {DeveloperError} <code>options.rectangle.east</code> must be in the interval [<code>-Pi</code>, <code>Pi</code>].
     * @exception {DeveloperError} <code>options.rectangle.west</code> must be in the interval [<code>-Pi</code>, <code>Pi</code>].
     * @exception {DeveloperError} <code>options.rectangle.north</code> must be greater than <code>options.rectangle.south</code>.
     *
     * @see RectangleGeometry#createGeometry
     *
     * @demo {@link https://sandcastle.cesium.com/index.html?src=Rectangle.html|Cesium Sandcastle Rectangle Demo}
     *
     * @example
     * // 1. create a rectangle
     * var rectangle = new Cesium.RectangleGeometry({
     *   ellipsoid : Cesium.Ellipsoid.WGS84,
     *   rectangle : Cesium.Rectangle.fromDegrees(-80.0, 39.0, -74.0, 42.0),
     *   height : 10000.0
     * });
     * var geometry = Cesium.RectangleGeometry.createGeometry(rectangle);
     *
     * // 2. create an extruded rectangle without a top
     * var rectangle = new Cesium.RectangleGeometry({
     *   ellipsoid : Cesium.Ellipsoid.WGS84,
     *   rectangle : Cesium.Rectangle.fromDegrees(-80.0, 39.0, -74.0, 42.0),
     *   height : 10000.0,
     *   extrudedHeight: 300000
     * });
     * var geometry = Cesium.RectangleGeometry.createGeometry(rectangle);
     */
    function RectangleGeometry(options) {
      options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
  
      var rectangle = options.rectangle;
  
      //>>includeStart('debug', pragmas.debug);
      Check.Check.typeOf.object("rectangle", rectangle);
      Cartesian2.Rectangle.validate(rectangle);
      if (rectangle.north < rectangle.south) {
        throw new Check.DeveloperError(
          "options.rectangle.north must be greater than or equal to options.rectangle.south"
        );
      }
      //>>includeEnd('debug');
  
      var height = when.defaultValue(options.height, 0.0);
      var extrudedHeight = when.defaultValue(options.extrudedHeight, height);
  
      this._rectangle = Cartesian2.Rectangle.clone(rectangle);
      this._granularity = when.defaultValue(
        options.granularity,
        _Math.CesiumMath.RADIANS_PER_DEGREE
      );
      this._ellipsoid = Cartesian2.Ellipsoid.clone(
        when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84)
      );
      this._surfaceHeight = Math.max(height, extrudedHeight);
      this._rotation = when.defaultValue(options.rotation, 0.0);
      this._stRotation = when.defaultValue(options.stRotation, 0.0);
      this._vertexFormat = VertexFormat.VertexFormat.clone(
        when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT)
      );
      this._extrudedHeight = Math.min(height, extrudedHeight);
      this._shadowVolume = when.defaultValue(options.shadowVolume, false);
      this._workerName = "createRectangleGeometry";
      this._offsetAttribute = options.offsetAttribute;
      this._rotatedRectangle = undefined;
  
      this._textureCoordinateRotationPoints = undefined;
    }
  
    /**
     * The number of elements used to pack the object into an array.
     * @type {Number}
     */
    RectangleGeometry.packedLength =
      Cartesian2.Rectangle.packedLength +
      Cartesian2.Ellipsoid.packedLength +
      VertexFormat.VertexFormat.packedLength +
      7;
  
    /**
     * Stores the provided instance into the provided array.
     *
     * @param {RectangleGeometry} 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
     */
    RectangleGeometry.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);
  
      Cartesian2.Rectangle.pack(value._rectangle, array, startingIndex);
      startingIndex += Cartesian2.Rectangle.packedLength;
  
      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._granularity;
      array[startingIndex++] = value._surfaceHeight;
      array[startingIndex++] = value._rotation;
      array[startingIndex++] = value._stRotation;
      array[startingIndex++] = value._extrudedHeight;
      array[startingIndex++] = value._shadowVolume ? 1.0 : 0.0;
      array[startingIndex] = when.defaultValue(value._offsetAttribute, -1);
  
      return array;
    };
  
    var scratchRectangle = new Cartesian2.Rectangle();
    var scratchEllipsoid = Cartesian2.Ellipsoid.clone(Cartesian2.Ellipsoid.UNIT_SPHERE);
    var scratchOptions = {
      rectangle: scratchRectangle,
      ellipsoid: scratchEllipsoid,
      vertexFormat: scratchVertexFormat,
      granularity: undefined,
      height: undefined,
      rotation: undefined,
      stRotation: undefined,
      extrudedHeight: undefined,
      shadowVolume: undefined,
      offsetAttribute: 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 {RectangleGeometry} [result] The object into which to store the result.
     * @returns {RectangleGeometry} The modified result parameter or a new RectangleGeometry instance if one was not provided.
     */
    RectangleGeometry.unpack = function (array, startingIndex, result) {
      //>>includeStart('debug', pragmas.debug);
      Check.Check.defined("array", array);
      //>>includeEnd('debug');
  
      startingIndex = when.defaultValue(startingIndex, 0);
  
      var rectangle = Cartesian2.Rectangle.unpack(array, startingIndex, scratchRectangle);
      startingIndex += Cartesian2.Rectangle.packedLength;
  
      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 granularity = array[startingIndex++];
      var surfaceHeight = array[startingIndex++];
      var rotation = array[startingIndex++];
      var stRotation = array[startingIndex++];
      var extrudedHeight = array[startingIndex++];
      var shadowVolume = array[startingIndex++] === 1.0;
      var offsetAttribute = array[startingIndex];
  
      if (!when.defined(result)) {
        scratchOptions.granularity = granularity;
        scratchOptions.height = surfaceHeight;
        scratchOptions.rotation = rotation;
        scratchOptions.stRotation = stRotation;
        scratchOptions.extrudedHeight = extrudedHeight;
        scratchOptions.shadowVolume = shadowVolume;
        scratchOptions.offsetAttribute =
          offsetAttribute === -1 ? undefined : offsetAttribute;
  
        return new RectangleGeometry(scratchOptions);
      }
  
      result._rectangle = Cartesian2.Rectangle.clone(rectangle, result._rectangle);
      result._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
      result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
      result._granularity = granularity;
      result._surfaceHeight = surfaceHeight;
      result._rotation = rotation;
      result._stRotation = stRotation;
      result._extrudedHeight = extrudedHeight;
      result._shadowVolume = shadowVolume;
      result._offsetAttribute =
        offsetAttribute === -1 ? undefined : offsetAttribute;
  
      return result;
    };
  
    /**
     * Computes the bounding rectangle based on the provided options
     *
     * @param {Object} options Object with the following properties:
     * @param {Rectangle} options.rectangle A cartographic rectangle with north, south, east and west properties in radians.
     * @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the rectangle lies.
     * @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 {Number} [options.rotation=0.0] The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
     * @param {Rectangle} [result] An object in which to store the result.
     *
     * @returns {Rectangle} The result rectangle
     */
    RectangleGeometry.computeRectangle = function (options, result) {
      options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
  
      var rectangle = options.rectangle;
  
      //>>includeStart('debug', pragmas.debug);
      Check.Check.typeOf.object("rectangle", rectangle);
      Cartesian2.Rectangle.validate(rectangle);
      if (rectangle.north < rectangle.south) {
        throw new Check.DeveloperError(
          "options.rectangle.north must be greater than or equal to options.rectangle.south"
        );
      }
      //>>includeEnd('debug');
  
      var granularity = when.defaultValue(
        options.granularity,
        _Math.CesiumMath.RADIANS_PER_DEGREE
      );
      var ellipsoid = when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84);
      var rotation = when.defaultValue(options.rotation, 0.0);
  
      return computeRectangle(rectangle, granularity, rotation, ellipsoid, result);
    };
  
    var tangentRotationMatrixScratch = new Transforms.Matrix3();
    var quaternionScratch = new Transforms.Quaternion();
    var centerScratch = new Cartesian2.Cartographic();
    /**
     * Computes the geometric representation of a rectangle, including its vertices, indices, and a bounding sphere.
     *
     * @param {RectangleGeometry} rectangleGeometry A description of the rectangle.
     * @returns {Geometry|undefined} The computed vertices and indices.
     *
     * @exception {DeveloperError} Rotated rectangle is invalid.
     */
    RectangleGeometry.createGeometry = function (rectangleGeometry) {
      if (
        _Math.CesiumMath.equalsEpsilon(
          rectangleGeometry._rectangle.north,
          rectangleGeometry._rectangle.south,
          _Math.CesiumMath.EPSILON10
        ) ||
        _Math.CesiumMath.equalsEpsilon(
          rectangleGeometry._rectangle.east,
          rectangleGeometry._rectangle.west,
          _Math.CesiumMath.EPSILON10
        )
      ) {
        return undefined;
      }
  
      var rectangle = rectangleGeometry._rectangle;
      var ellipsoid = rectangleGeometry._ellipsoid;
      var rotation = rectangleGeometry._rotation;
      var stRotation = rectangleGeometry._stRotation;
      var vertexFormat = rectangleGeometry._vertexFormat;
  
      var computedOptions = RectangleGeometryLibrary.RectangleGeometryLibrary.computeOptions(
        rectangle,
        rectangleGeometry._granularity,
        rotation,
        stRotation,
        rectangleScratch,
        nwScratch,
        stNwScratch
      );
  
      var tangentRotationMatrix = tangentRotationMatrixScratch;
      if (stRotation !== 0 || rotation !== 0) {
        var center = Cartesian2.Rectangle.center(rectangle, centerScratch);
        var axis = ellipsoid.geodeticSurfaceNormalCartographic(center, v1Scratch);
        Transforms.Quaternion.fromAxisAngle(axis, -stRotation, quaternionScratch);
        Transforms.Matrix3.fromQuaternion(quaternionScratch, tangentRotationMatrix);
      } else {
        Transforms.Matrix3.clone(Transforms.Matrix3.IDENTITY, tangentRotationMatrix);
      }
  
      var surfaceHeight = rectangleGeometry._surfaceHeight;
      var extrudedHeight = rectangleGeometry._extrudedHeight;
      var extrude = !_Math.CesiumMath.equalsEpsilon(
        surfaceHeight,
        extrudedHeight,
        0,
        _Math.CesiumMath.EPSILON2
      );
  
      computedOptions.lonScalar = 1.0 / rectangleGeometry._rectangle.width;
      computedOptions.latScalar = 1.0 / rectangleGeometry._rectangle.height;
      computedOptions.tangentRotationMatrix = tangentRotationMatrix;
  
      var geometry;
      var boundingSphere;
      rectangle = rectangleGeometry._rectangle;
      if (extrude) {
        geometry = constructExtrudedRectangle(rectangleGeometry, computedOptions);
        var topBS = Transforms.BoundingSphere.fromRectangle3D(
          rectangle,
          ellipsoid,
          surfaceHeight,
          topBoundingSphere
        );
        var bottomBS = Transforms.BoundingSphere.fromRectangle3D(
          rectangle,
          ellipsoid,
          extrudedHeight,
          bottomBoundingSphere
        );
        boundingSphere = Transforms.BoundingSphere.union(topBS, bottomBS);
      } else {
        geometry = constructRectangle(rectangleGeometry, computedOptions);
        geometry.attributes.position.values = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(
          geometry.attributes.position.values,
          surfaceHeight,
          ellipsoid,
          false
        );
  
        if (when.defined(rectangleGeometry._offsetAttribute)) {
          var length = geometry.attributes.position.values.length;
          var applyOffset = new Uint8Array(length / 3);
          var offsetValue =
            rectangleGeometry._offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE
              ? 0
              : 1;
          GeometryOffsetAttribute.arrayFill(applyOffset, offsetValue);
          geometry.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
            componentDatatype: ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
            componentsPerAttribute: 1,
            values: applyOffset,
          });
        }
  
        boundingSphere = Transforms.BoundingSphere.fromRectangle3D(
          rectangle,
          ellipsoid,
          surfaceHeight
        );
      }
  
      if (!vertexFormat.position) {
        delete geometry.attributes.position;
      }
  
      return new GeometryAttribute.Geometry({
        attributes: geometry.attributes,
        indices: geometry.indices,
        primitiveType: geometry.primitiveType,
        boundingSphere: boundingSphere,
        offsetAttribute: rectangleGeometry._offsetAttribute,
      });
    };
  
    /**
     * @private
     */
    RectangleGeometry.createShadowVolume = function (
      rectangleGeometry,
      minHeightFunc,
      maxHeightFunc
    ) {
      var granularity = rectangleGeometry._granularity;
      var ellipsoid = rectangleGeometry._ellipsoid;
  
      var minHeight = minHeightFunc(granularity, ellipsoid);
      var maxHeight = maxHeightFunc(granularity, ellipsoid);
  
      return new RectangleGeometry({
        rectangle: rectangleGeometry._rectangle,
        rotation: rectangleGeometry._rotation,
        ellipsoid: ellipsoid,
        stRotation: rectangleGeometry._stRotation,
        granularity: granularity,
        extrudedHeight: maxHeight,
        height: minHeight,
        vertexFormat: VertexFormat.VertexFormat.POSITION_ONLY,
        shadowVolume: true,
      });
    };
  
    var unrotatedTextureRectangleScratch = new Cartesian2.Rectangle();
    var points2DScratch = [new Cartesian2.Cartesian2(), new Cartesian2.Cartesian2(), new Cartesian2.Cartesian2()];
    var rotation2DScratch = new GeometryAttribute.Matrix2();
    var rectangleCenterScratch = new Cartesian2.Cartographic();
  
    function textureCoordinateRotationPoints(rectangleGeometry) {
      if (rectangleGeometry._stRotation === 0.0) {
        return [0, 0, 0, 1, 1, 0];
      }
  
      var rectangle = Cartesian2.Rectangle.clone(
        rectangleGeometry._rectangle,
        unrotatedTextureRectangleScratch
      );
      var granularity = rectangleGeometry._granularity;
      var ellipsoid = rectangleGeometry._ellipsoid;
  
      // Rotate to align the texture coordinates with ENU
      var rotation = rectangleGeometry._rotation - rectangleGeometry._stRotation;
  
      var unrotatedTextureRectangle = computeRectangle(
        rectangle,
        granularity,
        rotation,
        ellipsoid,
        unrotatedTextureRectangleScratch
      );
  
      // Assume a computed "east-north" texture coordinate system based on spherical or planar tricks, bounded by `boundingRectangle`.
      // The "desired" texture coordinate system forms an oriented rectangle (un-oriented computed) around the geometry that completely and tightly bounds it.
      // We want to map from the "east-north" texture coordinate system into the "desired" system using a pair of lines (analagous planes in 2D)
      // Compute 3 corners of the "desired" texture coordinate system in "east-north" texture space by the following in cartographic space:
      // - rotate 3 of the corners in unrotatedTextureRectangle by stRotation around the center of the bounding rectangle
      // - apply the "east-north" system's normalization formula to the rotated cartographics, even though this is likely to produce values outside [0-1].
      // This gives us a set of points in the "east-north" texture coordinate system that can be used to map "east-north" texture coordinates to "desired."
  
      var points2D = points2DScratch;
      points2D[0].x = unrotatedTextureRectangle.west;
      points2D[0].y = unrotatedTextureRectangle.south;
  
      points2D[1].x = unrotatedTextureRectangle.west;
      points2D[1].y = unrotatedTextureRectangle.north;
  
      points2D[2].x = unrotatedTextureRectangle.east;
      points2D[2].y = unrotatedTextureRectangle.south;
  
      var boundingRectangle = rectangleGeometry.rectangle;
      var toDesiredInComputed = GeometryAttribute.Matrix2.fromRotation(
        rectangleGeometry._stRotation,
        rotation2DScratch
      );
      var boundingRectangleCenter = Cartesian2.Rectangle.center(
        boundingRectangle,
        rectangleCenterScratch
      );
  
      for (var i = 0; i < 3; ++i) {
        var point2D = points2D[i];
        point2D.x -= boundingRectangleCenter.longitude;
        point2D.y -= boundingRectangleCenter.latitude;
        GeometryAttribute.Matrix2.multiplyByVector(toDesiredInComputed, point2D, point2D);
        point2D.x += boundingRectangleCenter.longitude;
        point2D.y += boundingRectangleCenter.latitude;
  
        // Convert point into east-north texture coordinate space
        point2D.x = (point2D.x - boundingRectangle.west) / boundingRectangle.width;
        point2D.y =
          (point2D.y - boundingRectangle.south) / boundingRectangle.height;
      }
  
      var minXYCorner = points2D[0];
      var maxYCorner = points2D[1];
      var maxXCorner = points2D[2];
      var result = new Array(6);
      Cartesian2.Cartesian2.pack(minXYCorner, result);
      Cartesian2.Cartesian2.pack(maxYCorner, result, 2);
      Cartesian2.Cartesian2.pack(maxXCorner, result, 4);
      return result;
    }
  
    Object.defineProperties(RectangleGeometry.prototype, {
      /**
       * @private
       */
      rectangle: {
        get: function () {
          if (!when.defined(this._rotatedRectangle)) {
            this._rotatedRectangle = computeRectangle(
              this._rectangle,
              this._granularity,
              this._rotation,
              this._ellipsoid
            );
          }
          return this._rotatedRectangle;
        },
      },
      /**
       * For remapping texture coordinates when rendering RectangleGeometries as GroundPrimitives.
       * This version permits skew in textures by computing offsets directly in cartographic space and
       * more accurately approximates rendering RectangleGeometries with height as standard Primitives.
       * @see Geometry#_textureCoordinateRotationPoints
       * @private
       */
      textureCoordinateRotationPoints: {
        get: function () {
          if (!when.defined(this._textureCoordinateRotationPoints)) {
            this._textureCoordinateRotationPoints = textureCoordinateRotationPoints(
              this
            );
          }
          return this._textureCoordinateRotationPoints;
        },
      },
    });
  
    function createRectangleGeometry(rectangleGeometry, offset) {
      if (when.defined(offset)) {
        rectangleGeometry = RectangleGeometry.unpack(rectangleGeometry, offset);
      }
      rectangleGeometry._ellipsoid = Cartesian2.Ellipsoid.clone(rectangleGeometry._ellipsoid);
      rectangleGeometry._rectangle = Cartesian2.Rectangle.clone(rectangleGeometry._rectangle);
      return RectangleGeometry.createGeometry(rectangleGeometry);
    }
  
    return createRectangleGeometry;
  
  });
  //# sourceMappingURL=createRectangleGeometry.js.map
  