store.cmn.md

store [Common Profiles]

The store object describes the exact physical storage of a layer and enables the client to detect when multiple layers are served from the same store. Storing multiple layers in a single store - and thus having them share resources - enables efficient serving of many layers of the same content type, but with different attribute schemas or different symbology applied.

Related:

cmn::3DSceneLayer

Properties

Property	Type	Description
id	string	A store ID, unique across a SceneServer. Enables the client to discover which layers are part of a common store, if any. {meshes, polygons, points, lines, analytics, meshpyramids, pointclouds, symbols}
profile	string	Indicates which profile this scene store fulfills.
resourcePattern	string[]	Indicates the resources needed for rendering and the required order in which the client should load them. Possible values for each array string: 3dNodeIndexDocument: JSON file describes a single index node within a store, with links to other nodes (children, sibling, and parent), links to feature data, geometry data and texture data resources, metadata such as metrics used for LoD selection, its spatial extent. SharedResource: Shared resources are models or textures that can be shared among features within the same layer. featureData: The FeatureData JSON file(s) contain geographical features with a set of attributes, accessors to geometry attributes and other references to styling or materials. Geometry: Each geometry resource is an array of geometries. Texture: The texture resource for a node contains the images that are used as textures for the features stored in the node. Attributes: Attribute resource for node containing feature data attributes
rootNode	string	Relative URL to root node resource.
version	string	Format version of this resource; used here again if this store hasn't been served by a 3D Scene Server.
extent	number[4]	The 2D spatial extent (xmin, ymin, xmax, ymax) of this store, in the horizontal indexCRS.
indexCRS	string	The horizontal CRS used for all minimum bounding spheres (mbs) in this store, identified by an OGC URL.
vertexCRS	string	The horizontal CRS used for all 'vertex positions' in this store, identified by an OGC URL.
normalReferenceFrame	string	Describes the coordinate reference frame used for storing normals. Possible values are: east-north-up: A value of east-north-up indicates that normals are stored in a node local reference frame defined by the easting, northing and up directions at the MBS center, and is only valid for geographic (WGS84) vertexCRS. earth-centered: A value of earth-centered indicates that normals are stored in a global earth-centered, earth-fixed (ECEF) reference frame where the x-axis points towards Prime meridian (lon = 0°) and Equator (lat = 0°), the y-axis points East towards lon = +90 and lat = 0 and the z-axis points North. It is only valid for geographic vertexCRS. vertex-reference-frame: A value of vertex-reference-frame indicates that normals are stored in the same reference frame as vertices and is only valid for projected vertexCRS.
nidEncoding	string	MIME type for the encoding used for the Node Index Documents. Example: application/vnd.esri.I3S.json+gzip; version=1.6.
featureEncoding	string	MIME type for the encoding used for the Feature Data Resources. For example: application/vnd.esri.I3S.json+gzip; version=1.6.
geometryEncoding	string	MIME type for the encoding used for the Geometry Resources. For example: application/octet-stream; version=1.6.
attributeEncoding	string	MIME type for the encoding used for the Attribute Resources. For example: application/octet-stream; version=1.6.
textureEncoding	string[]	MIME type(s) for the encoding used for the Texture Resources.
lodType	string	Optional field to indicate which LoD generation scheme is used in this store. Possible values are: MeshPyramid: Used for integrated mesh and 3D scene layer. AutoThinning: Use for point scene layer. Clustering: Fill in which profile types are using this lodType Generalizing: Fill in which profile types are using this lodType
lodModel	string	Optional field to indicate which LoD switching mode clients have to use. Possible values are: node-switching: Definition missing! none: Definition missing!
indexingScheme	string	Information on the Indexing Scheme (QuadTree, R-Tree, Octree, ...) used.
defaultGeometrySchema	defaultGeometrySchema	A common, global ArrayBufferView definition that can be used if the schema of vertex attributes and face attributes is consistent in an entire cache; this is a requirement for meshpyramids caches.
defaultTextureDefinition	texture	A common, global TextureDefinition to be used for all textures in this store. The default texture definition uses a reduced profile of the full TextureDefinition, with the following attributes being mandatory: encoding, uvSet, wrap and channels.
defaultMaterialDefinition	material	If a store uses only one material, it can be defined here entirely as a MaterialDefinition.

Note: properties in bold are required

Examples

Example: Store example

 {
  "id": "e9ecfade-0d85-4dd7-abb5-a3b0a07b9fd7",
  "profile": "meshpyramids",
  "resourcePattern": [
    "3dNodeIndexDocument",
    "SharedResource",
    "Geometry",
    "Attributes"
  ],
  "rootNode": "./nodes/root",
  "version": "1.4",
  "extent": [
    -106.5054122583675,
    38.99467780548919,
    -103.99630101552692,
    39.99697134061471
  ],
  "indexCRS": "http://www.opengis.net/def/crs/EPSG/0/4326",
  "vertexCRS": "http://www.opengis.net/def/crs/EPSG/0/4326",
  "nidEncoding": "application/vnd.esri.i3s.json+gzip; version=1.4",
  "featureEncoding": "application/vnd.esri.i3s.json+gzip; version=1.4",
  "geometryEncoding": "application/octet-stream; version=1.4",
  "attributeEncoding": "application/octet-stream; version=1.4",
  "textureEncoding": [
    "image/jpeg",
    "image/vnd-ms.dds"
  ],
  "lodType": "MeshPyramid",
  "lodModel": "node-switching",
  "defaultGeometrySchema": {
    "geometryType": "triangles",
    "header": [
      {
        "property": "vertexCount",
        "type": "UInt32"
      },
      {
        "property": "featureCount",
        "type": "UInt32"
      }
    ],
    "topology": "PerAttributeArray",
    "ordering": [
      "position",
      "normal",
      "uv0",
      "color"
    ],
    "vertexAttributes": {
      "position": {
        "valueType": "Float32",
        "valuesPerElement": 3
      },
      "normal": {
        "valueType": "Float32",
        "valuesPerElement": 3
      },
      "uv0": {
        "valueType": "Float32",
        "valuesPerElement": 2
      },
      "color": {
        "valueType": "UInt8",
        "valuesPerElement": 4
      }
    },
    "featureAttributeOrder": [
      "id",
      "faceRange"
    ],
    "featureAttributes": {
      "id": {
        "valueType": "UInt64",
        "valuesPerElement": 1
      },
      "faceRange": {
        "valueType": "UInt32",
        "valuesPerElement": 2
      }
    }
  }
}