@loaders.gl/3d-tiles/dist/index.cjs.map

3D Tiles, an open standard for streaming massive heterogeneous 3D geospatial datasets.

{
  "version": 3,
  "sources": ["../src/index.ts", "../src/tiles-3d-loader.ts", "../src/lib/utils/version.ts", "../src/lib/constants.ts", "../src/lib/parsers/helpers/parse-utils.ts", "../src/lib/parsers/parse-3d-tile-point-cloud.ts", "../src/lib/classes/tile-3d-feature-table.ts", "../src/lib/classes/tile-3d-batch-table.ts", "../src/lib/classes/helpers/tile-3d-accessor-utils.ts", "../src/lib/classes/tile-3d-batch-table-hierarchy.ts", "../src/lib/parsers/helpers/parse-3d-tile-header.ts", "../src/lib/parsers/helpers/parse-3d-tile-tables.ts", "../src/lib/parsers/helpers/normalize-3d-tile-colors.ts", "../src/lib/parsers/helpers/normalize-3d-tile-normals.ts", "../src/lib/parsers/helpers/normalize-3d-tile-positions.ts", "../src/lib/parsers/parse-3d-tile-batched-model.ts", "../src/lib/parsers/helpers/parse-3d-tile-gltf-view.ts", "../src/lib/parsers/parse-3d-tile-instanced-model.ts", "../src/lib/parsers/parse-3d-tile-composite.ts", "../src/lib/parsers/parse-3d-tile-gltf.ts", "../src/lib/parsers/parse-3d-tile.ts", "../src/lib/parsers/parse-3d-tile-header.ts", "../src/lib/parsers/helpers/parse-3d-tile-subtree.ts", "../src/tile-3d-subtree-loader.ts", "../src/lib/parsers/helpers/parse-3d-implicit-tiles.ts", "../src/lib/utils/s2/s2-token-functions.ts", "../src/lib/utils/s2/s2geometry/s2-geometry.ts", "../src/lib/utils/s2/converters/s2-to-boundary.ts", "../src/lib/utils/s2/s2geometry/s2-cell-utils.ts", "../src/lib/utils/s2/s2-geometry-functions.ts", "../src/lib/utils/s2/converters/s2-to-region.ts", "../src/lib/utils/s2/converters/s2-to-obb-points.ts", "../src/lib/utils/obb/s2-corners-to-obb.ts", "../src/lib/ion/ion.ts", "../src/cesium-ion-loader.ts", "../src/3d-tiles-archive-loader.ts", "../src/3d-tiles-archive/3d-tiles-archive-parser.ts", "../src/3d-tiles-archive/3d-tiles-archive-archive.ts", "../src/lib/encoders/encode-3d-tile.ts", "../src/lib/encoders/helpers/encode-3d-tile-header.ts", "../src/lib/encoders/encode-3d-tile-composite.ts", "../src/lib/encoders/encode-3d-tile-batched-model.ts", "../src/lib/encoders/encode-3d-tile-instanced-model.ts", "../src/lib/encoders/encode-3d-tile-point-cloud.ts", "../src/tile-3d-writer.ts"],
  "sourcesContent": ["// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright vis.gl contributors\n\n// LOADERS\nexport {Tiles3DLoader} from './tiles-3d-loader';\nexport {CesiumIonLoader} from './cesium-ion-loader';\nexport {Tile3DSubtreeLoader} from './tile-3d-subtree-loader';\nexport type {Tiles3DArchiveFileLoaderOptions} from './3d-tiles-archive-loader';\nexport {Tiles3DArchiveFileLoader} from './3d-tiles-archive-loader';\n\n// WRITERS\nexport {Tile3DWriter} from './tile-3d-writer';\n\n// CLASSES\nexport {default as Tile3DFeatureTable} from './lib/classes/tile-3d-feature-table';\nexport {default as Tile3DBatchTable} from './lib/classes/tile-3d-batch-table';\n\n// EXPERIMENTAL\nexport {TILE3D_TYPE} from './lib/constants';\nexport {getIonTilesetMetadata as _getIonTilesetMetadata} from './lib/ion/ion';\nexport type {\n  FeatureTableJson,\n  B3DMContent,\n  Tile3DBoundingVolume,\n  Tiles3DTileJSON,\n  Tiles3DTileJSONPostprocessed,\n  Tiles3DTilesetJSON,\n  Tiles3DTilesetJSONPostprocessed,\n  Tiles3DTileContent,\n  ImplicitTilingExensionData\n} from './types';\nexport type {Tiles3DLoaderOptions} from './tiles-3d-loader';\nexport {Tiles3DArchive} from './3d-tiles-archive/3d-tiles-archive-archive';\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright vis.gl contributors\n\nimport type {LoaderWithParser, StrictLoaderOptions, LoaderContext} from '@loaders.gl/loader-utils';\n// / import type { GLTFLoaderOptions } from '@loaders.gl/gltf';\nimport type {DracoLoaderOptions} from '@loaders.gl/draco';\nimport type {ImageLoaderOptions} from '@loaders.gl/images';\n\nimport {path} from '@loaders.gl/loader-utils';\nimport {TILESET_TYPE, LOD_METRIC_TYPE} from '@loaders.gl/tiles';\nimport {VERSION} from './lib/utils/version';\nimport {parse3DTile} from './lib/parsers/parse-3d-tile';\nimport {normalizeTileHeaders} from './lib/parsers/parse-3d-tile-header';\nimport {Tiles3DTilesetJSON, Tiles3DTileContent, Tiles3DTilesetJSONPostprocessed} from './types';\n\nexport type Tiles3DLoaderOptions = StrictLoaderOptions &\n  // GLTFLoaderOptions & - TODO not yet exported\n  DracoLoaderOptions &\n  ImageLoaderOptions & {\n    '3d-tiles'?: {\n      /** Whether to parse any embedded glTF binaries (or extract memory for independent glTF parsing) */\n      loadGLTF?: boolean;\n      /** If renderer doesn't support quantized positions, loader can decode them on CPU */\n      decodeQuantizedPositions?: boolean;\n      /** Whether this is a tileset or a tile */\n      isTileset?: boolean | 'auto';\n      /** Controls which axis is \"up\" in glTF files */\n      assetGltfUpAxis?: 'x' | 'y' | 'z' | null;\n    };\n  };\n\n/**\n * Loader for 3D Tiles\n */\nexport const Tiles3DLoader = {\n  dataType: null as any,\n  batchType: null as never,\n  id: '3d-tiles',\n  name: '3D Tiles',\n  module: '3d-tiles',\n  version: VERSION,\n  extensions: ['cmpt', 'pnts', 'b3dm', 'i3dm'],\n  mimeTypes: ['application/octet-stream'],\n  tests: ['cmpt', 'pnts', 'b3dm', 'i3dm'],\n  parse,\n  options: {\n    '3d-tiles': {\n      loadGLTF: true,\n      decodeQuantizedPositions: false,\n      isTileset: 'auto',\n      assetGltfUpAxis: null\n    }\n  }\n} as const satisfies LoaderWithParser<\n  Tiles3DTileContent | Tiles3DTilesetJSONPostprocessed,\n  never,\n  Tiles3DLoaderOptions\n>;\n\n/** Parses a tileset or tile */\nasync function parse(\n  data,\n  options: Tiles3DLoaderOptions = {},\n  context?: LoaderContext\n): Promise<Tiles3DTileContent | Tiles3DTilesetJSONPostprocessed> {\n  // auto detect file type\n  const loaderOptions = options['3d-tiles'] || {};\n  let isTileset;\n  if (loaderOptions.isTileset === 'auto') {\n    isTileset = context?.url && context.url.indexOf('.json') !== -1;\n  } else {\n    isTileset = loaderOptions.isTileset;\n  }\n\n  return isTileset ? parseTileset(data, options, context) : parseTile(data, options, context);\n}\n\n/** Parse a tileset */\nasync function parseTileset(\n  data: ArrayBuffer,\n  options?: Tiles3DLoaderOptions,\n  context?: LoaderContext\n): Promise<Tiles3DTilesetJSONPostprocessed> {\n  const tilesetJson: Tiles3DTilesetJSON = JSON.parse(new TextDecoder().decode(data));\n\n  const tilesetUrl = context?.url || '';\n  const basePath = getBaseUri(tilesetUrl);\n  const normalizedRoot = await normalizeTileHeaders(tilesetJson, basePath, options || {});\n  const tilesetJsonPostprocessed: Tiles3DTilesetJSONPostprocessed = {\n    ...tilesetJson,\n    shape: 'tileset3d',\n    loader: Tiles3DLoader,\n    url: tilesetUrl,\n    queryString: context?.queryString || '',\n    basePath,\n    root: normalizedRoot || tilesetJson.root,\n    type: TILESET_TYPE.TILES3D,\n    lodMetricType: LOD_METRIC_TYPE.GEOMETRIC_ERROR,\n    lodMetricValue: tilesetJson.root?.geometricError || 0\n  };\n  return tilesetJsonPostprocessed;\n}\n\n/** Parse a tile */\nasync function parseTile(\n  arrayBuffer: ArrayBuffer,\n  options?: Tiles3DLoaderOptions,\n  context?: LoaderContext\n): Promise<Tiles3DTileContent> {\n  const tile = {\n    content: {\n      shape: 'tile3d',\n      featureIds: null\n    }\n  };\n  const byteOffset = 0;\n  // @ts-expect-error\n  await parse3DTile(arrayBuffer, byteOffset, options, context, tile.content);\n  // @ts-expect-error\n  return tile.content;\n}\n\n/** Get base name */\nfunction getBaseUri(tilesetUrl: string): string {\n  return path.dirname(tilesetUrl);\n}\n", "// Version constant cannot be imported, it needs to correspond to the build version of **this** module.\n// __VERSION__ is injected by babel-plugin-version-inline\n// @ts-ignore TS2304: Cannot find name '__VERSION__'.\nexport const VERSION = typeof __VERSION__ !== 'undefined' ? __VERSION__ : 'latest';\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright vis.gl contributors\n\n// TILE TYPES\n\nexport const TILE3D_TYPE = {\n  COMPOSITE: 'cmpt',\n  POINT_CLOUD: 'pnts',\n  BATCHED_3D_MODEL: 'b3dm',\n  INSTANCED_3D_MODEL: 'i3dm',\n  GEOMETRY: 'geom',\n  VECTOR: 'vect',\n  GLTF: 'glTF'\n};\n\nexport const TILE3D_TYPES = Object.keys(TILE3D_TYPE);\n\nexport const MAGIC_ARRAY = {\n  BATCHED_MODEL: [98, 51, 100, 109],\n  INSTANCED_MODEL: [105, 51, 100, 109],\n  POINT_CLOUD: [112, 110, 116, 115],\n  COMPOSITE: [99, 109, 112, 116]\n};\n\n// TILE CONSTANTS\nexport const TILE3D_OPTIMIZATION_HINT = {\n  NOT_COMPUTED: -1,\n  USE_OPTIMIZATION: 1,\n  SKIP_OPTIMIZATION: 0\n};\n", "// loaders.gl\n// SPDX-License-Identifier: MIT AND Apache-2.0\n// Copyright vis.gl contributors\n\n// This file is derived from the Cesium code base under Apache 2 license\n// See LICENSE.md and https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md\n\nimport {assert} from '@loaders.gl/loader-utils';\n\n// Decode the JSON binary array into clear text\nexport function getStringFromArrayBuffer(arrayBuffer, byteOffset, byteLength) {\n  assert(arrayBuffer instanceof ArrayBuffer);\n  const textDecoder = new TextDecoder('utf8');\n  const typedArray = new Uint8Array(arrayBuffer, byteOffset, byteLength);\n  const string = textDecoder.decode(typedArray);\n  return string;\n}\n\n// Decode the JSON binary array into clear text\nexport function getStringFromTypedArray(typedArray) {\n  assert(ArrayBuffer.isView(typedArray));\n  const textDecoder = new TextDecoder('utf8');\n  const string = textDecoder.decode(typedArray);\n  return string;\n}\n\nexport function getMagicString(arrayBuffer, byteOffset = 0) {\n  const dataView = new DataView(arrayBuffer);\n  return `\\\n${String.fromCharCode(dataView.getUint8(byteOffset + 0))}\\\n${String.fromCharCode(dataView.getUint8(byteOffset + 1))}\\\n${String.fromCharCode(dataView.getUint8(byteOffset + 2))}\\\n${String.fromCharCode(dataView.getUint8(byteOffset + 3))}`;\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT AND Apache-2.0\n// Copyright vis.gl contributors\n\n// This file is derived from the Cesium code base under Apache 2 license\n// See LICENSE.md and https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md\n\nimport {DracoLoader} from '@loaders.gl/draco';\nimport {LoaderContext, parseFromContext} from '@loaders.gl/loader-utils';\nimport {GL} from '@loaders.gl/math';\nimport {Vector3} from '@math.gl/core';\n\nimport Tile3DFeatureTable from '../classes/tile-3d-feature-table';\nimport Tile3DBatchTable from '../classes/tile-3d-batch-table';\nimport {parse3DTileHeaderSync} from './helpers/parse-3d-tile-header';\nimport {parse3DTileTablesHeaderSync, parse3DTileTablesSync} from './helpers/parse-3d-tile-tables';\nimport {normalize3DTileColorAttribute} from './helpers/normalize-3d-tile-colors';\nimport {normalize3DTileNormalAttribute} from './helpers/normalize-3d-tile-normals';\nimport {normalize3DTilePositionAttribute} from './helpers/normalize-3d-tile-positions';\nimport {Tiles3DLoaderOptions} from '../../tiles-3d-loader';\nimport {Tiles3DTileContent} from '../../types';\n\nexport async function parsePointCloud3DTile(\n  tile: Tiles3DTileContent,\n  arrayBuffer: ArrayBuffer,\n  byteOffset: number,\n  options?: Tiles3DLoaderOptions,\n  context?: LoaderContext\n): Promise<number> {\n  byteOffset = parse3DTileHeaderSync(tile, arrayBuffer, byteOffset);\n  byteOffset = parse3DTileTablesHeaderSync(tile, arrayBuffer, byteOffset);\n  byteOffset = parse3DTileTablesSync(tile, arrayBuffer, byteOffset, options);\n  initializeTile(tile);\n\n  const {featureTable, batchTable} = parsePointCloudTables(tile);\n\n  await parseDraco(tile, featureTable, batchTable, options, context);\n\n  parsePositions(tile, featureTable, options);\n  // @ts-expect-error TODO - do we need to assert on the batch table?\n  parseColors(tile, featureTable, batchTable);\n  parseNormals(tile, featureTable);\n\n  return byteOffset;\n}\n\nfunction initializeTile(tile: Tiles3DTileContent): void {\n  // Initialize point cloud tile defaults\n  tile.attributes = {\n    positions: null,\n    colors: null,\n    normals: null,\n    batchIds: null\n  };\n  tile.isQuantized = false;\n  tile.isTranslucent = false;\n  tile.isRGB565 = false;\n  tile.isOctEncoded16P = false;\n}\n\nfunction parsePointCloudTables(tile: Tiles3DTileContent): {\n  featureTable: Tile3DFeatureTable;\n  batchTable: Tile3DBatchTable | null;\n} {\n  const featureTable = new Tile3DFeatureTable(tile.featureTableJson, tile.featureTableBinary);\n\n  const pointsLength = featureTable.getGlobalProperty('POINTS_LENGTH');\n  if (!Number.isFinite(pointsLength)) {\n    throw new Error('POINTS_LENGTH must be defined');\n  }\n  featureTable.featuresLength = pointsLength;\n\n  tile.featuresLength = pointsLength;\n  tile.pointsLength = pointsLength;\n  tile.pointCount = pointsLength;\n\n  tile.rtcCenter = featureTable.getGlobalProperty('RTC_CENTER', GL.FLOAT, 3);\n\n  const batchTable = parseBatchIds(tile, featureTable);\n\n  return {featureTable, batchTable};\n}\n\nfunction parsePositions(\n  tile: Tiles3DTileContent,\n  featureTable: Tile3DFeatureTable,\n  options: Tiles3DLoaderOptions | undefined\n): void {\n  tile.attributes = tile.attributes || {\n    positions: null,\n    colors: null,\n    normals: null,\n    batchIds: null\n  };\n  if (!tile.attributes.positions) {\n    if (featureTable.hasProperty('POSITION')) {\n      tile.attributes.positions = featureTable.getPropertyArray('POSITION', GL.FLOAT, 3);\n    } else if (featureTable.hasProperty('POSITION_QUANTIZED')) {\n      const positions = featureTable.getPropertyArray('POSITION_QUANTIZED', GL.UNSIGNED_SHORT, 3);\n\n      tile.isQuantized = true;\n      tile.quantizedRange = (1 << 16) - 1;\n\n      tile.quantizedVolumeScale = featureTable.getGlobalProperty(\n        'QUANTIZED_VOLUME_SCALE',\n        GL.FLOAT,\n        3\n      );\n      if (!tile.quantizedVolumeScale) {\n        throw new Error('QUANTIZED_VOLUME_SCALE must be defined for quantized positions.');\n      }\n\n      tile.quantizedVolumeOffset = featureTable.getGlobalProperty(\n        'QUANTIZED_VOLUME_OFFSET',\n        GL.FLOAT,\n        3\n      );\n      if (!tile.quantizedVolumeOffset) {\n        throw new Error('QUANTIZED_VOLUME_OFFSET must be defined for quantized positions.');\n      }\n\n      tile.attributes.positions = normalize3DTilePositionAttribute(tile, positions, options);\n    }\n  }\n\n  if (!tile.attributes.positions) {\n    throw new Error('Either POSITION or POSITION_QUANTIZED must be defined.');\n  }\n}\n\nfunction parseColors(\n  tile: Tiles3DTileContent,\n  featureTable: Tile3DFeatureTable,\n  batchTable: Tile3DBatchTable\n): void {\n  tile.attributes = tile.attributes || {\n    positions: null,\n    colors: null,\n    normals: null,\n    batchIds: null\n  };\n  if (!tile.attributes.colors) {\n    let colors = null;\n    if (featureTable.hasProperty('RGBA')) {\n      colors = featureTable.getPropertyArray('RGBA', GL.UNSIGNED_BYTE, 4);\n      tile.isTranslucent = true;\n    } else if (featureTable.hasProperty('RGB')) {\n      colors = featureTable.getPropertyArray('RGB', GL.UNSIGNED_BYTE, 3);\n    } else if (featureTable.hasProperty('RGB565')) {\n      colors = featureTable.getPropertyArray('RGB565', GL.UNSIGNED_SHORT, 1);\n      tile.isRGB565 = true;\n    }\n\n    tile.attributes.colors = normalize3DTileColorAttribute(tile, colors, batchTable);\n  }\n\n  if (featureTable.hasProperty('CONSTANT_RGBA')) {\n    tile.constantRGBA = featureTable.getGlobalProperty('CONSTANT_RGBA', GL.UNSIGNED_BYTE, 4);\n  }\n}\n\nfunction parseNormals(tile: Tiles3DTileContent, featureTable: Tile3DFeatureTable): void {\n  tile.attributes = tile.attributes || {\n    positions: null,\n    colors: null,\n    normals: null,\n    batchIds: null\n  };\n  if (!tile.attributes.normals) {\n    let normals = null;\n    if (featureTable.hasProperty('NORMAL')) {\n      normals = featureTable.getPropertyArray('NORMAL', GL.FLOAT, 3);\n    } else if (featureTable.hasProperty('NORMAL_OCT16P')) {\n      normals = featureTable.getPropertyArray('NORMAL_OCT16P', GL.UNSIGNED_BYTE, 2);\n      tile.isOctEncoded16P = true;\n    }\n\n    tile.attributes.normals = normalize3DTileNormalAttribute(tile, normals);\n  }\n}\n\nfunction parseBatchIds(\n  tile: Tiles3DTileContent,\n  featureTable: Tile3DFeatureTable\n): Tile3DBatchTable | null {\n  let batchTable: Tile3DBatchTable | null = null;\n  if (!tile.batchIds && featureTable.hasProperty('BATCH_ID')) {\n    tile.batchIds = featureTable.getPropertyArray('BATCH_ID', GL.UNSIGNED_SHORT, 1);\n\n    if (tile.batchIds) {\n      const batchFeatureLength = featureTable.getGlobalProperty('BATCH_LENGTH');\n      if (!batchFeatureLength) {\n        throw new Error('Global property: BATCH_LENGTH must be defined when BATCH_ID is defined.');\n      }\n      const {batchTableJson, batchTableBinary} = tile;\n      batchTable = new Tile3DBatchTable(batchTableJson, batchTableBinary, batchFeatureLength);\n    }\n  }\n  return batchTable;\n}\n\n// eslint-disable-next-line complexity\nasync function parseDraco(\n  tile: Tiles3DTileContent,\n  featureTable: Tile3DFeatureTable,\n  batchTable,\n  options?: Tiles3DLoaderOptions,\n  context?: LoaderContext\n) {\n  let dracoBuffer;\n  let dracoFeatureTableProperties;\n  let dracoBatchTableProperties;\n  const batchTableDraco =\n    tile.batchTableJson &&\n    tile.batchTableJson.extensions &&\n    tile.batchTableJson.extensions['3DTILES_draco_point_compression'];\n  if (batchTableDraco) {\n    dracoBatchTableProperties = batchTableDraco.properties;\n  }\n\n  const featureTableDraco = featureTable.getExtension('3DTILES_draco_point_compression');\n  if (featureTableDraco) {\n    dracoFeatureTableProperties = featureTableDraco.properties;\n    const dracoByteOffset = featureTableDraco.byteOffset;\n    const dracoByteLength = featureTableDraco.byteLength;\n    if (!dracoFeatureTableProperties || !Number.isFinite(dracoByteOffset) || !dracoByteLength) {\n      throw new Error('Draco properties, byteOffset, and byteLength must be defined');\n    }\n\n    dracoBuffer = (tile.featureTableBinary || []).slice(\n      dracoByteOffset,\n      dracoByteOffset + dracoByteLength\n    );\n\n    tile.hasPositions = Number.isFinite(dracoFeatureTableProperties.POSITION);\n    tile.hasColors =\n      Number.isFinite(dracoFeatureTableProperties.RGB) ||\n      Number.isFinite(dracoFeatureTableProperties.RGBA);\n    tile.hasNormals = Number.isFinite(dracoFeatureTableProperties.NORMAL);\n    tile.hasBatchIds = Number.isFinite(dracoFeatureTableProperties.BATCH_ID);\n    tile.isTranslucent = Number.isFinite(dracoFeatureTableProperties.RGBA);\n  }\n\n  if (!dracoBuffer) {\n    return true;\n  }\n\n  const dracoData = {\n    buffer: dracoBuffer,\n    properties: {...dracoFeatureTableProperties, ...dracoBatchTableProperties},\n    featureTableProperties: dracoFeatureTableProperties,\n    batchTableProperties: dracoBatchTableProperties,\n    dequantizeInShader: false\n  };\n\n  return await loadDraco(tile, dracoData, options, context);\n}\n\n// eslint-disable-next-line complexity, max-statements\nexport async function loadDraco(\n  tile: Tiles3DTileContent,\n  dracoData,\n  options?: Tiles3DLoaderOptions,\n  context?: LoaderContext\n): Promise<void> {\n  if (!context) {\n    return;\n  }\n  const dracoOptions = {\n    ...options,\n    draco: {\n      ...options?.draco,\n      extraAttributes: dracoData.batchTableProperties || {}\n    }\n  };\n\n  // The entire tileset might be included, too expensive to serialize\n  delete dracoOptions['3d-tiles'];\n\n  const data = await parseFromContext(dracoData.buffer, DracoLoader, dracoOptions, context);\n\n  const decodedPositions = data.attributes.POSITION && data.attributes.POSITION.value;\n  const decodedColors = data.attributes.COLOR_0 && data.attributes.COLOR_0.value;\n  const decodedNormals = data.attributes.NORMAL && data.attributes.NORMAL.value;\n  const decodedBatchIds = data.attributes.BATCH_ID && data.attributes.BATCH_ID.value;\n  // @ts-expect-error\n  const isQuantizedDraco = decodedPositions && data.attributes.POSITION.value.quantization;\n  // @ts-expect-error\n  const isOctEncodedDraco = decodedNormals && data.attributes.NORMAL.value.quantization;\n  if (isQuantizedDraco) {\n    // Draco quantization range == quantized volume scale - size in meters of the quantized volume\n    // Internal quantized range is the range of values of the quantized data, e.g. 255 for 8-bit, 1023 for 10-bit, etc\n    // @ts-expect-error This doesn't look right\n    const quantization = data.POSITION.data.quantization;\n    const range = quantization.range;\n    tile.quantizedVolumeScale = new Vector3(range, range, range);\n    tile.quantizedVolumeOffset = new Vector3(quantization.minValues);\n    tile.quantizedRange = (1 << quantization.quantizationBits) - 1.0;\n    tile.isQuantizedDraco = true;\n  }\n  if (isOctEncodedDraco) {\n    // @ts-expect-error This doesn't look right\n    tile.octEncodedRange = (1 << data.NORMAL.data.quantization.quantizationBits) - 1.0;\n    tile.isOctEncodedDraco = true;\n  }\n\n  // Extra batch table attributes\n  const batchTableAttributes = {};\n  if (dracoData.batchTableProperties) {\n    for (const attributeName of Object.keys(dracoData.batchTableProperties)) {\n      if (data.attributes[attributeName] && data.attributes[attributeName].value) {\n        batchTableAttributes[attributeName.toLowerCase()] = data.attributes[attributeName].value;\n      }\n    }\n  }\n\n  tile.attributes = {\n    // @ts-expect-error\n    positions: decodedPositions,\n    // @ts-expect-error\n    colors: normalize3DTileColorAttribute(tile, decodedColors, undefined),\n    // @ts-expect-error\n    normals: decodedNormals,\n    // @ts-expect-error\n    batchIds: decodedBatchIds,\n    ...batchTableAttributes\n  };\n}\n\n// TODO - this is the remaining code from Cesium's parser\n/*\n  const batchTable = new Tile3DBatchTable(tile);\n\n  // parseDracoBuffer(tile, featureTable, batchTable);\n\n  if (!tile.attributes.positions) {\n    throw new Error('Either POSITION or POSITION_QUANTIZED must be defined.');\n  }\n}\n/*\n\n  if (!tile.attributes.positions) {\n    if (featureTable.hasProperty('POSITION')) {\n      tile.attributes.positions = featureTable.getPropertyArray('POSITION', GL.FLOAT, 3);\n    } else if (featureTable.hasProperty('POSITION_QUANTIZED')) {\n      tile.attributes.positions = featureTable.getPropertyArray('POSITION_QUANTIZED', GL.UNSIGNED_SHORT, 3);\n\n\n  if (!tile.colors) {\n    if (featureTable.hasProperty('RGBA')) {\n      tile.colors = featureTable.getPropertyArray('RGBA', GL.UNSIGNED_BYTE, 4);\n      tile.isTranslucent = true;\n    } else if (featureTable.hasProperty('RGB')) {\n      tile.colors = featureTable.getPropertyArray('RGB', GL.UNSIGNED_BYTE, 3);\n    } else if (featureTable.hasPropertry('RGB565')) {\n      tile.colors = featureTable.getPropertyArray('RGB565', GL.UNSIGNED_SHORT, 1);\n      tile.isRGB565 = true;\n    }\n  }\n\n  if (!tile.attributes.normals) {\n    if (featureTable.getPropertry('NORMAL')) {\n      tile.attributes.normals = featureTable.getPropertyArray('NORMAL', GL.FLOAT, 3);\n    } else if (featureTable.getProperty('NORMAL_OCT16P')) {\n      tile.attributes.normals = featureTable.getPropertyArray('NORMAL_OCT16P', GL.UNSIGNED_BYTE, 2);\n      tile.isOctEncoded16P = true;\n    }\n  }\n\n  if (!tile.batchIds) {\n    if (featureTable.hasProperty('BATCH_ID')) {\n      tile.batchIds = featureTable.getPropertyArray('BATCH_ID', GL.UNSIGNED_SHORT, 1);\n    }\n  }\n\n  if (!tile.attributes.positions) {\n    throw new Error('Either POSITION or POSITION_QUANTIZED must be defined.');\n  }\n\n  if (featureTable.getPropertry('CONSTANT_RGBA')) {\n    tile.constantRGBA = featureTable.getGlobalProperty('CONSTANT_RGBA', GL.UNSIGNED_BYTE, 4);\n  }\n\n  if (tile.batchIds) {\n    const batchLength = featureTable.getGlobalProperty('BATCH_LENGTH');\n    if (!defined(batchLength)) {\n      throw new Error('Global property: BATCH_LENGTH must be defined when BATCH_ID is defined.');\n    }\n\n    if (defined(batchTableBinary)) {\n      // Copy the batchTableBinary section and let the underlying ArrayBuffer be freed\n      batchTableBinary = new Uint8Array(batchTableBinary);\n    }\n\n    if (defined(pointCloud._batchTableLoaded)) {\n      pointCloud._batchTableLoaded(batchLength, batchTableJson, batchTableBinary);\n    }\n  }\n\n  // If points are not batched and there are per-point properties, use these properties for styling purposes\n  var styleableProperties;\n  if (!hasBatchIds && defined(batchTableBinary)) {\n    tile.styleableProperties = Cesium3DTileBatchTable.getBinaryProperties(\n      pointsLength,\n      batchTableJson,\n      batchTableBinary\n    );\n  }\n\n  tile.draco = draco;\n}\n\n// Separate parsing and decoding of Draco\nexport function parseDracoBuffer(tile, featureTable, batchTable) {\n  let dracoBuffer;\n  let dracoFeatureTableProperties;\n  let dracoBatchTableProperties;\n\n  const batchTableDraco = batchTable.getExtension('3DTILES_draco_point_compression');\n  if (batchTableDraco) {\n    dracoBatchTableProperties = batchTableDraco.properties;\n  }\n\n  const featureTableDraco = featureTable.getExtension('3DTILES_draco_point_compression');\n  if (featureTableDraco) {\n    dracoFeatureTableProperties = featureTableDraco.properties;\n    const dracoByteOffset = featureTableDraco.byteOffset;\n    const dracoByteLength = featureTableDraco.byteLength;\n    if (!dracoFeatureTableProperties || !dracoByteOffset || !dracoByteLength) {\n      throw new Error('Draco properties, byteOffset, and byteLength must be defined');\n    }\n\n    dracoBuffer = arraySlice(\n      featureTableBinary,\n      dracoByteOffset,\n      dracoByteOffset + dracoByteLength\n    );\n    tile.hasPositions = dracoFeatureTableProperties.POSITION;\n    tile.hasColors = dracoFeatureTableProperties.RGB || dracoFeatureTableProperties.RGBA;\n    tile.hasNormals = dracoFeatureTableProperties.NORMAL;\n    tile.hasBatchIds = dracoFeatureTableProperties.BATCH_ID;\n    tile.isTranslucent = dracoFeatureTableProperties.RGBA;\n  }\n\n  if (dracoBuffer) {\n    tile.draco = {\n      buffer: dracoBuffer,\n      properties: {...dracoFeatureTableProperties, ...dracoBatchTableProperties},\n      featureTableProperties: dracoFeatureTableProperties,\n      batchTableProperties: dracoBatchTableProperties,\n      dequantizeInShader: false\n    };\n\n    tile.decodingState = DECODING_STATE.NEEDS_DECODE;\n  }\n}\n\n/*\nfunction decodeDraco(tile, context) {\n  if (tile.decodingState === DECODING_STATE.READY) {\n    return false;\n  }\n  if (tile.decodingState === DECODING_STATE.NEEDS_DECODE) {\n    var parsedContent = tile._parsedContent;\n    var draco = parsedContent.draco;\n    var decodePromise = DracoLoader.decodePointCloud(draco, context);\n    if (defined(decodePromise)) {\n      tile.decodingState = DECODING_STATE.DECODING;\n      decodePromise.then(function(result) {\n        tile.decodingState = DECODING_STATE.READY;\n        var decodedPositions = defined(result.POSITION) ? result.POSITION.array : undefined;\n        var decodedRgb = defined(result.RGB) ? result.RGB.array : undefined;\n        var decodedRgba = defined(result.RGBA) ? result.RGBA.array : undefined;\n        var decodedNormals = defined(result.NORMAL) ? result.NORMAL.array : undefined;\n        var decodedBatchIds = defined(result.BATCH_ID) ? result.BATCH_ID.array : undefined;\n        var isQuantizedDraco = defined(decodedPositions) && defined(result.POSITION.data.quantization);\n        var isOctEncodedDraco = defined(decodedNormals) && defined(result.NORMAL.data.quantization);\n        if (isQuantizedDraco) {\n          // Draco quantization range == quantized volume scale - size in meters of the quantized volume\n          // Internal quantized range is the range of values of the quantized data, e.g. 255 for 8-bit, 1023 for 10-bit, etc\n          var quantization = result.POSITION.data.quantization;\n          var range = quantization.range;\n          tile._quantizedVolumeScale = Cartesian3.fromElements(range, range, range);\n          tile._quantizedVolumeOffset = Cartesian3.unpack(quantization.minValues);\n          tile._quantizedRange = (1 << quantization.quantizationBits) - 1.0;\n          tile._isQuantizedDraco = true;\n        }\n        if (isOctEncodedDraco) {\n          tile._octEncodedRange = (1 << result.NORMAL.data.quantization.quantizationBits) - 1.0;\n          tile._isOctEncodedDraco = true;\n        }\n        var styleableProperties = parsedContent.styleableProperties;\n        var batchTableProperties = draco.batchTableProperties;\n        for (var name in batchTableProperties) {\n          if (batchTableProperties.hasOwnProperty(name)) {\n            var property = result[name];\n            if (!defined(styleableProperties)) {\n              styleableProperties = {};\n            }\n            styleableProperties[name] = {\n              typedArray : property.array,\n              componentCount : property.data.componentsPerAttribute\n            };\n          }\n        }\n        parsedContent.positions = defaultValue(decodedPositions, parsedContent.positions);\n        parsedContent.colors = defaultValue(defaultValue(decodedRgba, decodedRgb), parsedContent.colors);\n        parsedContent.normals = defaultValue(decodedNormals, parsedContent.normals);\n        parsedContent.batchIds = defaultValue(decodedBatchIds, parsedContent.batchIds);\n        parsedContent.styleableProperties = styleableProperties;\n      }).otherwise(function(error) {\n        tile.decodingState = DECODING_STATE.FAILED;\n        tile._readyPromise.reject(error);\n      });\n    }\n  }\n  return true;\n}\n*/\n", "// loaders.gl\n// SPDX-License-Identifier: MIT AND Apache-2.0\n// Copyright vis.gl contributors\n\n// This file is derived from the Cesium code base under Apache 2 license\n// See LICENSE.md and https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md\n\nimport {GL, GLType} from '@loaders.gl/math';\n\n// Reference:\n// https://github.com/AnalyticalGraphicsInc/cesium/blob/1de96d087f0b17575eb1a3f736407b348c765d59/Source/Scene/Cesium3DTileFeatureTable.js\nexport default class Tile3DFeatureTable {\n  json;\n  buffer;\n  featuresLength = 0;\n  _cachedTypedArrays = {};\n\n  constructor(featureTableJson, featureTableBinary) {\n    this.json = featureTableJson;\n    this.buffer = featureTableBinary;\n  }\n\n  getExtension(extensionName) {\n    return this.json.extensions && this.json.extensions[extensionName];\n  }\n\n  hasProperty(propertyName) {\n    return Boolean(this.json[propertyName]);\n  }\n\n  getGlobalProperty(propertyName, componentType = GL.UNSIGNED_INT, componentLength = 1) {\n    const jsonValue = this.json[propertyName];\n\n    if (jsonValue && Number.isFinite(jsonValue.byteOffset)) {\n      return this._getTypedArrayFromBinary(\n        propertyName,\n        componentType,\n        componentLength,\n        1,\n        jsonValue.byteOffset\n      );\n    }\n\n    return jsonValue;\n  }\n\n  getPropertyArray(propertyName, componentType, componentLength) {\n    const jsonValue = this.json[propertyName];\n\n    if (jsonValue && Number.isFinite(jsonValue.byteOffset)) {\n      if ('componentType' in jsonValue) {\n        componentType = GLType.fromName(jsonValue.componentType);\n      }\n      return this._getTypedArrayFromBinary(\n        propertyName,\n        componentType,\n        componentLength,\n        this.featuresLength,\n        jsonValue.byteOffset\n      );\n    }\n\n    return this._getTypedArrayFromArray(propertyName, componentType, jsonValue);\n  }\n\n  getProperty(propertyName, componentType, componentLength, featureId, result) {\n    const jsonValue = this.json[propertyName];\n    if (!jsonValue) {\n      return jsonValue;\n    }\n\n    const typedArray = this.getPropertyArray(propertyName, componentType, componentLength);\n\n    if (componentLength === 1) {\n      return typedArray[featureId];\n    }\n\n    for (let i = 0; i < componentLength; ++i) {\n      result[i] = typedArray[componentLength * featureId + i];\n    }\n\n    return result;\n  }\n\n  // HELPERS\n\n  _getTypedArrayFromBinary(propertyName, componentType, componentLength, count, byteOffset) {\n    const cachedTypedArrays = this._cachedTypedArrays;\n    let typedArray = cachedTypedArrays[propertyName];\n    if (!typedArray) {\n      typedArray = GLType.createTypedArray(\n        componentType,\n        this.buffer.buffer,\n        this.buffer.byteOffset + byteOffset,\n        count * componentLength\n      );\n      cachedTypedArrays[propertyName] = typedArray;\n    }\n    return typedArray;\n  }\n\n  _getTypedArrayFromArray(propertyName, componentType, array) {\n    const cachedTypedArrays = this._cachedTypedArrays;\n    let typedArray = cachedTypedArrays[propertyName];\n    if (!typedArray) {\n      if (ArrayBuffer.isView(array)) {\n        const byteOffset = array.byteOffset;\n        const byteLength = array.byteLength;\n        const elementCount = byteLength / GLType.getByteSize(componentType);\n        typedArray = GLType.createTypedArray(componentType, array.buffer, byteOffset, elementCount);\n      } else if (array instanceof ArrayBuffer) {\n        typedArray = GLType.createTypedArray(componentType, array);\n      } else {\n        const ArrayType = GLType.getArrayType(componentType);\n        typedArray = new ArrayType(array);\n      }\n      cachedTypedArrays[propertyName] = typedArray;\n    }\n    return typedArray;\n  }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT AND Apache-2.0\n// Copyright vis.gl contributors\n\n// This file is derived from the Cesium code base under Apache 2 license\n// See LICENSE.md and https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md\n\nimport {assert} from '@loaders.gl/loader-utils';\n\nimport {createTypedArrayFromAccessor} from './helpers/tile-3d-accessor-utils';\nimport {initializeHierarchy, traverseHierarchy} from './tile-3d-batch-table-hierarchy';\n\nfunction defined(x) {\n  return x !== undefined && x !== null;\n}\n\nconst clone = (x, y) => x;\n\n// These top level fields in the batch table json are not properties\nconst IGNORED_PROPERTY_FIELDS = {\n  HIERARCHY: true, // Deprecated HIERARCHY property\n  extensions: true,\n  extras: true\n};\n\n// The size of this array equals the maximum instance count among all loaded tiles, which has the potential to be large.\nexport default class Tile3DBatchTableParser {\n  json;\n  binary;\n  featureCount;\n  _extensions;\n  // Copy all top-level property fields from the json object, ignoring special fields\n  _properties;\n  _binaryProperties;\n  // TODO: hierarchy support is only partially implemented and not tested\n  _hierarchy;\n\n  constructor(json, binary, featureCount, options = {}) {\n    assert(featureCount >= 0);\n    this.json = json || {};\n    this.binary = binary;\n    this.featureCount = featureCount;\n\n    this._extensions = this.json?.extensions || {};\n\n    // Copy all top-level property fields from the json object, ignoring special fields\n    this._properties = {};\n    for (const propertyName in this.json) {\n      if (!IGNORED_PROPERTY_FIELDS[propertyName]) {\n        this._properties[propertyName] = this.json[propertyName];\n      }\n    }\n\n    this._binaryProperties = this._initializeBinaryProperties();\n\n    // TODO: hierarchy support is only partially implemented and not tested\n    if (options['3DTILES_batch_table_hierarchy']) {\n      this._hierarchy = initializeHierarchy(this, this.json, this.binary);\n    }\n  }\n\n  getExtension(extensionName) {\n    return this.json && this.json.extensions && this.json.extensions[extensionName];\n  }\n\n  memorySizeInBytes(): number {\n    return 0;\n  }\n\n  isClass(batchId, className: string): boolean {\n    this._checkBatchId(batchId);\n    assert(typeof className === 'string', className);\n\n    // extension: 3DTILES_batch_table_hierarchy\n    if (this._hierarchy) {\n      // PERFORMANCE_IDEA : cache results in the ancestor classes\n      //   to speed up this check if this area becomes a hotspot\n      // PERFORMANCE_IDEA : treat class names as integers for faster comparisons\n      const result = traverseHierarchy(this._hierarchy, batchId, (hierarchy, instanceIndex) => {\n        const classId = hierarchy.classIds[instanceIndex];\n        const instanceClass = hierarchy.classes[classId];\n        return instanceClass.name === className;\n      });\n      return defined(result);\n    }\n\n    return false;\n  }\n\n  isExactClass(batchId, className) {\n    assert(typeof className === 'string', className);\n\n    return this.getExactClassName(batchId) === className;\n  }\n\n  getExactClassName(batchId) {\n    this._checkBatchId(batchId);\n\n    // extension: 3DTILES_batch_table_hierarchy\n    if (this._hierarchy) {\n      const classId = this._hierarchy.classIds[batchId];\n      const instanceClass = this._hierarchy.classes[classId];\n      return instanceClass.name;\n    }\n\n    return undefined;\n  }\n\n  hasProperty(batchId, name) {\n    this._checkBatchId(batchId);\n    assert(typeof name === 'string', name);\n\n    return defined(this._properties[name]) || this._hasPropertyInHierarchy(batchId, name);\n  }\n\n  getPropertyNames(batchId, results) {\n    this._checkBatchId(batchId);\n\n    results = defined(results) ? results : [];\n    results.length = 0;\n\n    const propertyNames = Object.keys(this._properties);\n    results.push(...propertyNames);\n\n    if (this._hierarchy) {\n      this._getPropertyNamesInHierarchy(batchId, results);\n    }\n\n    return results;\n  }\n\n  getProperty(batchId, name) {\n    this._checkBatchId(batchId);\n    assert(typeof name === 'string', name);\n\n    if (this._binaryProperties) {\n      const binaryProperty = this._binaryProperties[name];\n      if (defined(binaryProperty)) {\n        return this._getBinaryProperty(binaryProperty, batchId);\n      }\n    }\n\n    const propertyValues = this._properties[name];\n    if (defined(propertyValues)) {\n      return clone(propertyValues[batchId], true);\n    }\n\n    // EXTENSION: 3DTILES_batch_table_hierarchy\n    if (this._hierarchy) {\n      const hierarchyProperty = this._getHierarchyProperty(batchId, name);\n      if (defined(hierarchyProperty)) {\n        return hierarchyProperty;\n      }\n    }\n\n    return undefined;\n  }\n\n  setProperty(batchId, name, value) {\n    const featureCount = this.featureCount;\n\n    this._checkBatchId(batchId);\n    assert(typeof name === 'string', name);\n\n    if (this._binaryProperties) {\n      const binaryProperty = this._binaryProperties[name];\n      if (binaryProperty) {\n        this._setBinaryProperty(binaryProperty, batchId, value);\n        return;\n      }\n    }\n\n    // EXTENSION: 3DTILES_batch_table_hierarchy\n    if (this._hierarchy) {\n      if (this._setHierarchyProperty(this, batchId, name, value)) {\n        return;\n      }\n    }\n\n    let propertyValues = this._properties[name];\n    if (!defined(propertyValues)) {\n      // Property does not exist. Create it.\n      this._properties[name] = new Array(featureCount);\n      propertyValues = this._properties[name];\n    }\n\n    propertyValues[batchId] = clone(value, true);\n  }\n\n  // PRIVATE METHODS\n\n  _checkBatchId(batchId) {\n    const valid = batchId >= 0 && batchId < this.featureCount;\n    if (!valid) {\n      throw new Error('batchId not in range [0, featureCount - 1].');\n    }\n  }\n\n  _getBinaryProperty(binaryProperty, index) {\n    return binaryProperty.unpack(binaryProperty.typedArray, index);\n  }\n\n  _setBinaryProperty(binaryProperty, index, value) {\n    binaryProperty.pack(value, binaryProperty.typedArray, index);\n  }\n\n  _initializeBinaryProperties() {\n    let binaryProperties: Record<string, any> | null = null;\n    for (const name in this._properties) {\n      const property = this._properties[name];\n      const binaryProperty = this._initializeBinaryProperty(name, property);\n      // Store any information needed to access the binary data, including the typed array,\n      // componentCount (e.g. a VEC4 would be 4), and the type used to pack and unpack (e.g. Cartesian4).\n      if (binaryProperty) {\n        binaryProperties = binaryProperties || {};\n        binaryProperties[name] = binaryProperty;\n      }\n    }\n    return binaryProperties;\n  }\n\n  _initializeBinaryProperty(name, property) {\n    if ('byteOffset' in property) {\n      // This is a binary property\n      const tile3DAccessor = property;\n\n      assert(this.binary, `Property ${name} requires a batch table binary.`);\n      assert(tile3DAccessor.type, `Property ${name} requires a type.`);\n\n      const accessor = createTypedArrayFromAccessor(\n        tile3DAccessor,\n        this.binary.buffer,\n        this.binary.byteOffset | 0,\n        this.featureCount\n      );\n\n      // Store any information needed to access the binary data, including the typed array,\n      // componentCount (e.g. a VEC4 would be 4), and the type used to pack and unpack (e.g. Cartesian4).\n      return {\n        typedArray: accessor.values,\n        componentCount: accessor.size,\n        unpack: accessor.unpacker,\n        pack: accessor.packer\n      };\n    }\n\n    return null;\n  }\n\n  //  EXTENSION SUPPORT: 3DTILES_batch_table_hierarchy\n\n  _hasPropertyInHierarchy(batchId, name) {\n    if (!this._hierarchy) {\n      return false;\n    }\n\n    const result = traverseHierarchy(this._hierarchy, batchId, (hierarchy, instanceIndex) => {\n      const classId = hierarchy.classIds[instanceIndex];\n      const instances = hierarchy.classes[classId].instances;\n      return defined(instances[name]);\n    });\n\n    return defined(result);\n  }\n\n  _getPropertyNamesInHierarchy(batchId, results) {\n    traverseHierarchy(this._hierarchy, batchId, (hierarchy, instanceIndex) => {\n      const classId = hierarchy.classIds[instanceIndex];\n      const instances = hierarchy.classes[classId].instances;\n      for (const name in instances) {\n        if (instances.hasOwnProperty(name)) {\n          if (results.indexOf(name) === -1) {\n            results.push(name);\n          }\n        }\n      }\n    });\n  }\n\n  _getHierarchyProperty(batchId, name) {\n    return traverseHierarchy(this._hierarchy, batchId, (hierarchy, instanceIndex) => {\n      const classId = hierarchy.classIds[instanceIndex];\n      const instanceClass = hierarchy.classes[classId];\n      const indexInClass = hierarchy.classIndexes[instanceIndex];\n      const propertyValues = instanceClass.instances[name];\n      if (defined(propertyValues)) {\n        if (defined(propertyValues.typedArray)) {\n          return this._getBinaryProperty(propertyValues, indexInClass);\n        }\n        return clone(propertyValues[indexInClass], true);\n      }\n      return null;\n    });\n  }\n\n  _setHierarchyProperty(batchTable, batchId, name, value) {\n    const result = traverseHierarchy(this._hierarchy, batchId, (hierarchy, instanceIndex) => {\n      const classId = hierarchy.classIds[instanceIndex];\n      const instanceClass = hierarchy.classes[classId];\n      const indexInClass = hierarchy.classIndexes[instanceIndex];\n      const propertyValues = instanceClass.instances[name];\n      if (defined(propertyValues)) {\n        assert(instanceIndex === batchId, `Inherited property \"${name}\" is read-only.`);\n        if (defined(propertyValues.typedArray)) {\n          this._setBinaryProperty(propertyValues, indexInClass, value);\n        } else {\n          propertyValues[indexInClass] = clone(value, true);\n        }\n        return true;\n      }\n      return false;\n    });\n    return defined(result);\n  }\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright vis.gl contributors\n\nimport {GLType} from '@loaders.gl/math'; // '@math.gl/geometry';\nimport {assert} from '@loaders.gl/loader-utils';\n\nconst COMPONENTS_PER_ATTRIBUTE = {\n  SCALAR: 1,\n  VEC2: 2,\n  VEC3: 3,\n  VEC4: 4,\n  MAT2: 4,\n  MAT3: 9,\n  MAT4: 16\n};\n\n// TODO - could just return typed array views...\n// prettier-ignore\nconst UNPACKER = {\n  SCALAR: (values, i) => values[i],\n  VEC2: (values, i) => [values[2 * i + 0], values[2 * i + 1]],\n  VEC3: (values, i) => [values[3 * i + 0], values[3 * i + 1], values[3 * i + 2]],\n  VEC4: (values, i) => [values[4 * i + 0], values[4 * i + 1], values[4 * i + 2], values[4 * i + 3]],\n  // TODO: check column major\n  MAT2: (values, i) => [\n    values[4 * i + 0], values[4 * i + 1],\n    values[4 * i + 2], values[4 * i + 3]\n  ],\n  MAT3: (values, i) => [\n    values[9 * i + 0], values[9 * i + 1], values[9 * i + 2],\n    values[9 * i + 3], values[9 * i + 4], values[9 * i + 5],\n    values[9 * i + 6], values[9 * i + 7], values[9 * i + 8]\n  ],\n  MAT4: (values, i) => [\n    values[16 * i + 0], values[16 * i + 1], values[16 * i + 2], values[16 * i + 3],\n    values[16 * i + 4], values[16 * i + 5], values[16 * i + 6], values[16 * i + 7],\n    values[16 * i + 8], values[16 * i + 9], values[16 * i + 10], values[16 * i + 11],\n    values[16 * i + 12], values[16 * i + 13], values[16 * i + 14], values[16 * i + 15]\n  ]\n};\n\nconst PACKER = {\n  SCALAR: (x, values, i) => {\n    values[i] = x;\n  },\n  VEC2: (x, values, i) => {\n    values[2 * i + 0] = x[0];\n    values[2 * i + 1] = x[1];\n  },\n  VEC3: (x, values, i) => {\n    values[3 * i + 0] = x[0];\n    values[3 * i + 1] = x[1];\n    values[3 * i + 2] = x[2];\n  },\n  VEC4: (x, values, i) => {\n    values[4 * i + 0] = x[0];\n    values[4 * i + 1] = x[1];\n    values[4 * i + 2] = x[2];\n    values[4 * i + 3] = x[3];\n  },\n  // TODO: check column major correctness\n  MAT2: (x, values, i) => {\n    values[4 * i + 0] = x[0];\n    values[4 * i + 1] = x[1];\n    values[4 * i + 2] = x[2];\n    values[4 * i + 3] = x[3];\n  },\n  MAT3: (x, values, i) => {\n    values[9 * i + 0] = x[0];\n    values[9 * i + 1] = x[1];\n    values[9 * i + 2] = x[2];\n    values[9 * i + 3] = x[3];\n    values[9 * i + 4] = x[4];\n    values[9 * i + 5] = x[5];\n    values[9 * i + 6] = x[6];\n    values[9 * i + 7] = x[7];\n    values[9 * i + 8] = x[8];\n    values[9 * i + 9] = x[9];\n  },\n  MAT4: (x, values, i) => {\n    values[16 * i + 0] = x[0];\n    values[16 * i + 1] = x[1];\n    values[16 * i + 2] = x[2];\n    values[16 * i + 3] = x[3];\n    values[16 * i + 4] = x[4];\n    values[16 * i + 5] = x[5];\n    values[16 * i + 6] = x[6];\n    values[16 * i + 7] = x[7];\n    values[16 * i + 8] = x[8];\n    values[16 * i + 9] = x[9];\n    values[16 * i + 10] = x[10];\n    values[16 * i + 11] = x[11];\n    values[16 * i + 12] = x[12];\n    values[16 * i + 13] = x[13];\n    values[16 * i + 14] = x[14];\n    values[16 * i + 15] = x[15];\n  }\n};\n\nexport function createTypedArrayFromAccessor(tile3DAccessor, buffer, byteOffset, length) {\n  const {componentType} = tile3DAccessor;\n  assert(tile3DAccessor.componentType);\n  const type = typeof componentType === 'string' ? GLType.fromName(componentType) : componentType;\n  const size = COMPONENTS_PER_ATTRIBUTE[tile3DAccessor.type];\n  const unpacker = UNPACKER[tile3DAccessor.type];\n  const packer = PACKER[tile3DAccessor.type];\n\n  byteOffset += tile3DAccessor.byteOffset;\n  const values = GLType.createTypedArray(type, buffer, byteOffset, size * length);\n\n  return {\n    values,\n    type,\n    size,\n    unpacker,\n    packer\n  };\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT AND Apache-2.0\n// Copyright vis.gl contributors\n\n// This file is derived from the Cesium code base under Apache 2 license\n// See LICENSE.md and https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md\n\n// TODO - Finish hierarchy suypport: this file is only half ported\n/* eslint-disable */\n// @ts-nocheck\nconst defined = (x) => x !== undefined;\n\nexport function initializeHierarchy(batchTable, jsonHeader, binaryBody) {\n  if (!jsonHeader) {\n    return null;\n  }\n\n  let hierarchy = batchTable.getExtension('3DTILES_batch_table_hierarchy');\n\n  const legacyHierarchy = jsonHeader.HIERARCHY;\n  if (legacyHierarchy) {\n    // eslint-disable-next-line\n    console.warn('3D Tile Parser: HIERARCHY is deprecated. Use 3DTILES_batch_table_hierarchy.');\n    jsonHeader.extensions = jsonHeader.extensions || {};\n    jsonHeader.extensions['3DTILES_batch_table_hierarchy'] = legacyHierarchy;\n    hierarchy = legacyHierarchy;\n  }\n\n  if (!hierarchy) {\n    return null;\n  }\n\n  return initializeHierarchyValues(hierarchy, binaryBody);\n}\n\n// eslint-disable-next-line max-statements\nfunction initializeHierarchyValues(hierarchyJson, binaryBody) {\n  let i;\n  let classId;\n  let binaryAccessor;\n\n  const instancesLength = hierarchyJson.instancesLength;\n  const classes = hierarchyJson.classes;\n  let classIds = hierarchyJson.classIds;\n  let parentCounts = hierarchyJson.parentCounts;\n  let parentIds = hierarchyJson.parentIds;\n  let parentIdsLength = instancesLength;\n\n  if (defined(classIds.byteOffset)) {\n    classIds.componentType = defaultValue(classIds.componentType, GL.UNSIGNED_SHORT);\n    classIds.type = AttributeType.SCALAR;\n    binaryAccessor = getBinaryAccessor(classIds);\n    classIds = binaryAccessor.createArrayBufferView(\n      binaryBody.buffer,\n      binaryBody.byteOffset + classIds.byteOffset,\n      instancesLength\n    );\n  }\n\n  let parentIndexes;\n  if (defined(parentCounts)) {\n    if (defined(parentCounts.byteOffset)) {\n      parentCounts.componentType = defaultValue(parentCounts.componentType, GL.UNSIGNED_SHORT);\n      parentCounts.type = AttributeType.SCALAR;\n      binaryAccessor = getBinaryAccessor(parentCounts);\n      parentCounts = binaryAccessor.createArrayBufferView(\n        binaryBody.buffer,\n        binaryBody.byteOffset + parentCounts.byteOffset,\n        instancesLength\n      );\n    }\n    parentIndexes = new Uint16Array(instancesLength);\n    parentIdsLength = 0;\n    for (i = 0; i < instancesLength; ++i) {\n      parentIndexes[i] = parentIdsLength;\n      parentIdsLength += parentCounts[i];\n    }\n  }\n\n  if (defined(parentIds) && define