/**
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* An enum to indicate the different types of {@link Cesium3DTileContent}.
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* For binary files, the enum value is the magic number of the binary file
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* unless otherwise noted. For JSON files, the enum value is a unique name
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* for internal use.
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*
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* @enum {String}
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* @see Cesium3DTileContent
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*
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* @private
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*/
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var Cesium3DTileContentType = {
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/**
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* A Batched 3D Model. This is a binary format with
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* magic number <code>b3dm</code>
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*
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* @type {String}
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* @constant
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* @private
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*/
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BATCHED_3D_MODEL: "b3dm",
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/**
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* An Instanced 3D Model. This is a binary format with magic number
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* <code>i3dm</code>
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*
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* @type {String}
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* @constant
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* @private
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*/
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INSTANCED_3D_MODEL: "i3dm",
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/**
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* A Composite model. This is a binary format with magic number
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* <code>cmpt</code>
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*
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* @type {String}
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* @constant
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* @private
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*/
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COMPOSITE: "cmpt",
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/**
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* A Point Cloud model. This is a binary format with magic number
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* <code>pnts</code>
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*
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* @type {String}
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* @constant
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* @private
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*/
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POINT_CLOUD: "pnts",
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/**
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* Vector tiles. This is a binary format with magic number
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* <code>vctr</code>
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*
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* @type {String}
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* @constant
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* @private
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*/
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VECTOR: "vctr",
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/**
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* Geometry tiles. This is a binary format with magic number
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* <code>geom</code>
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*
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* @type {String}
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* @constant
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* @private
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*/
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GEOMETRY: "geom",
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/**
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* A glTF model in JSON + external BIN form. This is treated
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* as a JSON format.
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*
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* @type {String}
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* @constant
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* @private
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* @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
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*/
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GLTF: "gltf",
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/**
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* The binary form of a glTF file. Internally, the magic number is
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* changed from <code>glTF</code> to <code>glb</code> to distinguish it from
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* the JSON glTF format.
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*
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* @type {String}
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* @constant
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* @private
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* @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
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*/
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GLTF_BINARY: "glb",
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/**
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* For the <code>3DTILES_implicit_tiling</code> extension,
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* availability bitstreams are stored in binary subtree files.
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* The magic number is <code>subt</code>
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*
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* @type {String}
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* @constant
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* @private
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* @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
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*/
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IMPLICIT_SUBTREE: "subt",
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/**
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* Contents can reference another tileset.json to use
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* as an external tileset. This is a JSON-based format.
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*
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* @type {String}
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* @constant
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* @private
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*/
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EXTERNAL_TILESET: "externalTileset",
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/**
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* <code>3DTILES_multiple_contents</code> is a 3D Tiles
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* extensions. This is handled separately from the other content types
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* due to differences in request scheduling.
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*
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* @type {String}
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* @constant
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* @private
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* @experimental This feature is using part of the 3D Tiles spec that is not final and is subject to change without Cesium's standard deprecation policy.
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*/
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MULTIPLE_CONTENT: "multipleContent",
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};
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/**
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* Check if a content is one of the supported binary formats. Otherwise,
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* the caller can assume a JSON format.
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* @param {Cesium3DTileContentType} contentType The content type of the content payload.
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* @return {Boolean} <code>true</code> if the content type is a binary format, or <code>false</code> if the content type is a JSON format.
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* @private
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*/
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Cesium3DTileContentType.isBinaryFormat = function (contentType) {
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switch (contentType) {
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case Cesium3DTileContentType.BATCHED_3D_MODEL:
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case Cesium3DTileContentType.INSTANCED_3D_MODEL:
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case Cesium3DTileContentType.COMPOSITE:
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case Cesium3DTileContentType.POINT_CLOUD:
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case Cesium3DTileContentType.VECTOR:
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case Cesium3DTileContentType.GEOMETRY:
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case Cesium3DTileContentType.IMPLICIT_SUBTREE:
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case Cesium3DTileContentType.GLTF_BINARY:
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return true;
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default:
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return false;
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}
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};
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export default Object.freeze(Cesium3DTileContentType);
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