FragmentsModel

The main class for managing a 3D model loaded from a fragments file. Handles geometry, materials, visibility, highlighting, sections, and more. This class orchestrates multiple specialized managers to handle different aspects of the model like mesh management, item data, raycasting, etc. It maintains the overall state and provides the main interface for interacting with the model. The model data is loaded and processed asynchronously across multiple threads.

Implements

• IFragmentsModel<true>

Constructors

new FragmentsModel()

new FragmentsModel(modelId, meshManager, threads, editor, threadGroup?): FragmentsModel

The constructor of the fragments model. Don't use this directly. Use the FragmentsModels.load instead.

Parameters

Parameter	Type
modelId	string
meshManager	MeshManager
threads	FragmentsConnection
editor	Editor
threadGroup?	string

Returns

FragmentsModel

Properties

attrsChanges

readonly attrsChanges: Map<number, AttrsChange>

A map of attribute changes that have occurred in the model. The key is the local ID of the item, and the value is the change.

---

graphicsQuality

graphicsQuality: number = 0

The graphics quality of the model. It ranges from 0 (lowest) to 1 (highest).

---

object

object: Object3D<Object3DEventMap>

The object that represents the model in the Three.js scene.

---

onViewUpdated

readonly onViewUpdated: Event <FragmentsModel>

Event triggered after a view update cycle finishes processing. Listeners receive this FragmentsModel instance, allowing queries like getItemsByVisibility to retrieve seen/unseen elements.

---

relsChanges

readonly relsChanges: Map<number, RelsModifyChange>

A map of relation changes that have occurred in the model. The key is the local ID of the item, and the value is the change.

---

threadGroup

readonly threadGroup: undefined | string

The thread group this model was loaded into, or undefined if it was loaded into the default pool. Set once at load time, never changes.

---

threads

readonly threads: FragmentsConnection

The connection to the threads that handle the model data.

---

tiles

readonly tiles: DataMap<string | number, BIMMesh>

A map of tiles that have been loaded for the model. The key is the tile ID, and the value is the tile.

---

visibleItems

readonly visibleItems: Set<number>

A set of item IDs that are currently visible (i.e. have at least one tile rendered on screen). Updated automatically as tiles are created and deleted by the mesh manager.

Accessors

box

get box(): Box3

The bounding box of the whole model.

Returns

Box3

---

clippingPlanes

get clippingPlanes(): Plane[]

The clipping planes the model culls against, in world space. This is the array passed to useClippingPlanes (or the clippingPlanes load option) itself, not a copy.

Returns

Plane[]

---

frozen

get frozen(): boolean

Whether the model should stop updating..

set frozen(value): void

Whether the model should stop updating..

Parameters

Parameter	Type
value	boolean

Returns

boolean

---

getClippingPlanesEvent

get getClippingPlanesEvent(): () => Plane[]

The event that is triggered when the clipping planes are needed in the thread. Set this method to pass your Three.js clipping planes to the model.

Deprecated

Pass the planes with the clippingPlanes option of FragmentsModels.load, or call useClippingPlanes after loading. This callback keeps working; whichever of the two was set last is the one the model uses.

set getClippingPlanesEvent(value): void

The event that is triggered when the clipping planes are needed in the thread. Set this method to pass your Three.js clipping planes to the model.

Deprecated

Pass the planes with the clippingPlanes option of FragmentsModels.load, or call useClippingPlanes after loading. This callback keeps working; whichever of the two was set last is the one the model uses.

Parameters

Parameter	Type
value	() => Plane[]

Returns

Function

Returns

Plane[]

---

isBusy

get isBusy(): boolean

Whether the model is busy loading data.

Returns

boolean

---

modelId

get modelId(): string

The ID of the model.

Returns

string

Methods

_edit()

_edit(requests): Promise<object>

Internal method to edit the model. Don't use this directly.

Parameters

Parameter	Type	Description
requests	EditRequest[]	The requests to edit the model.

Returns

Promise<object>

deltaModelBuffer

deltaModelBuffer: Uint8Array

ids

ids: number[]

---

_finishProcessing()

_finishProcessing(): void

Internal method to finish processing. Don't use this directly.

Returns

void

---

_getItemSnapData()

_getItemSnapData(itemId): Promise<null | ElementData>

Fast snap-only fetch keyed by itemId. See EditManager.getItemSnapData. Internal — picker / SnapResolver consume this. App code should keep using _getElements (localId).

Parameters

Parameter	Type
itemId	number

Returns

Promise<null | ElementData>

---

_getRequests()

_getRequests(): Promise<object>

Internal method to get the requests of the model. Don't use this directly.

Returns

Promise<object>

requests

requests: EditRequest[]

undoneRequests

undoneRequests: EditRequest[]

---

_refreshView()

_refreshView(force): Promise<void>

Internal method to refresh the view of the model. You shouldn't call this directly. Instead, use FragmentsModels.update.

Parameters

Parameter	Type	Default value
force	boolean	false

Returns

Promise<void>

---

_reset()

_reset(): Promise<void>

Internal method to reset the model. Don't use this directly.

Returns

Promise<void>

---

_save()

_save(): Promise<Uint8Array>

Internal method to save the model. Don't use this directly.

Returns

Promise<Uint8Array>

---

_selectRequest()

_selectRequest(index): Promise<void>

Internal method to select a request of the model. Don't use this directly.

Parameters

Parameter	Type	Description
index	number	The index of the request to select.

Returns

Promise<void>

---

_setRequests()

_setRequests(data): Promise<void>

Internal method to set the requests of the model. Don't use this directly.

Parameters

Parameter	Type	Description
data	object	The data to set the requests of the model.
data.requests?	EditRequest[]	-
data.undoneRequests?	EditRequest[]	-

Returns

Promise<void>

---

_setup()

_setup(data, raw?, config?): Promise<void>

Internal method to set up the model. Don't use this directly.

Parameters

Parameter	Type
data	Uint8Array | ArrayBuffer
raw?	boolean
config?	VirtualModelConfig

Returns

Promise<void>

---

dispose()

dispose(options?): Promise<void>

Dispose the model. Use this when you're done with the model. If you use the FragmentsModels.dispose method, this will be called automatically for all models.

Parameters

Parameter	Type	Description
options?	object	-
options.keepInScene?	boolean	If true, frees the model's worker slot, registry entries and shared MaterialManager slot but leaves the THREE object, tiles, materials in list, alignments and grids in place. Caller must finalize the visual cleanup later via finalizeDispose. Used by editor.save() to swap in a freshly loaded model without a blank frame.

Returns

Promise<void>

Implementation of

IFragmentsModel.dispose

---

finalizeDispose()

finalizeDispose(): void

Finalize a deferred dispose. Removes the THREE object from its parent, tears down tile meshes (geometry only — materials are shared via the MaterialManager and may be reused by a replacement model under the same modelId), and disposes the model's alignments and grids.

Only call this after dispose({ keepInScene: true }). The tile map is cleared with events disabled to bypass the onBeforeDelete listener registered in the constructor (which would otherwise dispose tile materials).

Returns

void

---

getAlignmentStyles()

getAlignmentStyles(): Promise<object>

Get the civil alignment styles of the model (if any).

Returns

Promise<object>

exterior

exterior: PointsMaterial

interior

interior: PointsMaterial

---

getAlignments()

getAlignments(): Promise<Group<Object3DEventMap>>

Get the absolute alignments of the model (if any).

Returns

Promise<Group<Object3DEventMap>>

---

getAttributeNames()

getAttributeNames(): Promise<string[]>

Retrieves the names of all attributes associated with the model.

Returns

Promise<string[]>

A promise that resolves to an array of strings, where each string is the name of an attribute.

---

getAttributeTypes()

getAttributeTypes(): Promise<string[]>

Retrieves the attribute types associated with the model.

Returns

Promise<string[]>

A promise that resolves to an array of attribute types.

---

getAttributeValues()

getAttributeValues(): Promise<any[]>

Retrieves the attribute values associated with the model.

Returns

Promise<any[]>

A promise that resolves to an array of attribute values.

---

getBoxes()

getBoxes(localIds?): Promise<Box3[]>

Get the individual bounding boxes of the specified items.

Parameters

Parameter	Type	Description
localIds?	number[]	The local IDs of the items to look up.

Returns

Promise<Box3[]>

---

getBuffer()

getBuffer(raw): Promise<ArrayBuffer>

Get the buffer of the model.

Parameters

Parameter	Type	Default value	Description
raw	boolean	false	Whether to get the raw buffer. If false, it will be compressed.

Returns

Promise<ArrayBuffer>

Implementation of

IFragmentsModel.getBuffer

---

getCRS()

getCRS(): Promise<null | CRSData>

Get the Coordinate Reference System (CRS) data of the model, if available. Returns null if the source IFC file did not contain IFCPROJECTEDCRS or IFCCOORDINATEREFERENCESYSTEM entities.

Returns

Promise<null | CRSData>

Implementation of

IFragmentsModel.getCRS

---

getCategories()

getCategories(): Promise<string[]>

Get all the categories of the model.

Returns

Promise<string[]>

Implementation of

IFragmentsModel.getCategories

---

getCoordinates()

getCoordinates(): Promise<number[]>

Gets coordinates of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getCoordinates

---

getCoordinationMatrix()

getCoordinationMatrix(): Promise<Matrix4>

Retrieves the coordination matrix for the current model.

This method utilizes the _coordinatesManager to compute and return a THREE.Matrix4 object based on the original model coordinates.

Returns

Promise<Matrix4>

---

getEditedElements()

getEditedElements(): Promise<number[]>

Gets the edited elements of the model.

Returns

Promise<number[]>

---

getGlobalTranformsIdsOfItems()

getGlobalTranformsIdsOfItems(ids): Promise<number[]>

Gets the global transforms IDs of the items of the model.

Parameters

Parameter	Type	Description
ids	number[]	The local IDs of the items to get the global transforms IDs of.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getGlobalTranformsIdsOfItems

---

getGlobalTransforms()

getGlobalTransforms(localIds?): Promise<Map<number, RawGlobalTransformData>>

Gets the global transforms of the model.

Parameters

Parameter	Type	Description
localIds?	Iterable<number>	The local IDs of the global transforms to get. If undefined, it will return all global transforms.

Returns

Promise<Map<number, RawGlobalTransformData>>

Implementation of

IFragmentsModel.getGlobalTransforms

---

getGlobalTransformsIds()

getGlobalTransformsIds(): Promise<number[]>

Gets all the global transforms IDs of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getGlobalTransformsIds

---

getGridLabelMaterial()

getGridLabelMaterial(): Material

The shared material used to render every grid axis label. Mutating its properties (color, opacity, dash sizes, etc.) updates all rendered grid labels immediately. Use setGridLabelMaterial to swap to a different material instance.

Returns

Material

---

getGridMaterial()

getGridMaterial(): LineBasicMaterial

The shared material used to render every grid axis line. Mutating its properties (color, opacity, dash sizes, etc.) updates all rendered grid lines immediately. Use setGridMaterial to swap to a different material instance.

Returns

LineBasicMaterial

---

getGrids()

getGrids(config?): Promise<Group<Object3DEventMap>>

Get the grids of the model (if any).

Returns a THREE.Group with one child per grid (each child is a THREE.Group that carries userData.id = localId and userData.kind = "grid").

Each grid's children are THREE.Group instances with userData.kind = "axis", acting as an axis container. A THREE.LINE instance with userData.kind = "line" is appended to it.

When opting in to showing labels, two THREE.SHAPE instances with userData.kind = "label" and userData.index (the label's index, 0 or 1) are appended to the axis container.

All grid's descendants ("axis", "line", "label") carry userData.tag (the axis label value) and userData.axis ("uAxes", "vAxes", or "wAxes").

Parameters

Parameter	Type
config?	GridsConfig

Returns

Promise<Group<Object3DEventMap>>

---

getGuidsByLocalIds()

getGuidsByLocalIds(localIds): Promise<(null | string)[]>

Get the GUIDs corresponding to the specified local IDs.

Parameters

Parameter	Type	Description
localIds	number[]	Array of local IDs to look up.

Returns

Promise<(null | string)[]>

Implementation of

IFragmentsModel.getGuidsByLocalIds

---

getHighlight()

getHighlight(localIds?): Promise <MaterialDefinition[]>

Gets the highlight of the specified items.

Parameters

Parameter	Type	Description
localIds?	number[]	The local IDs of the items to get the highlight of. If undefined, it will return the highlight of all items.

Returns

Promise <MaterialDefinition[]>

---

getHighlightItemIds()

getHighlightItemIds(): Promise<number[]>

Gets the item IDs of the items that are highlighted.

Returns

Promise<number[]>

---

getHorizontalAlignments()

getHorizontalAlignments(): Promise<Group<Object3DEventMap>>

Get the horizontal alignments of the model (if any).

Returns

Promise<Group<Object3DEventMap>>

---

getIndexEntry()

getIndexEntry<K, V>(name, key): Promise<null | V>

Forward lookup of a single entry in the named index. The return shape depends on the index mode (see IndexEntry).

Type parameters

Type parameter
K extends string | number
V extends IndexEntry

Parameters

Parameter	Type
name	string
key	K

Returns

Promise<null | V>

Implementation of

IFragmentsModel.getIndexEntry

---

getIndexInfo()

getIndexInfo(name): Promise<null | IndexInfo>

Describe the shape of a named index without performing any lookups. Returns null if no index with that name exists.

Parameters

Parameter	Type
name	string

Returns

Promise<null | IndexInfo>

Implementation of

IFragmentsModel.getIndexInfo

---

getIndexKey()

getIndexKey<K>(name, index): Promise<null | K>

Get key at given index. Useful for keys-only indexes but valid for any mode.

Type parameters

Type parameter
K extends string | number

Parameters

Parameter	Type
name	string
index	number

Returns

Promise<null | K>

Implementation of

IFragmentsModel.getIndexKey

---

getIndexKeys()

getIndexKeys<K>(name): Promise<null | IndexArrayType<K>>

Get the keys of an index. Useful for keys-only indexes (membership tests, iteration) but valid for any mode. Number keys come back as a Uint32Array, string keys as string[].

Type parameters

Type parameter
K extends string | number

Parameters

Parameter	Type
name	string

Returns

Promise<null | IndexArrayType<K>>

Implementation of

IFragmentsModel.getIndexKeys

---

getIndexNames()

getIndexNames(): Promise<string[]>

Get the names of every user-defined index stored on this model. See the ModelIndex schema for the supported shapes.

Returns

Promise<string[]>

Implementation of

IFragmentsModel.getIndexNames

---

getIndexValues()

getIndexValues<V>(name): Promise<null | V[]>

Get the values of an index. Useful for inverse lookups.

Type parameters

Type parameter
V extends string | number

Parameters

Parameter	Type
name	string

Returns

Promise<null | V[]>

Implementation of

IFragmentsModel.getIndexValues

---

getInverseIndexEntry()

getInverseIndexEntry<K, V>(name, value): Promise<null | IndexArrayType<V>>

Inverse lookup. For an index with forward direction key -> value, returns every key that maps to value. The inverse map is built lazily on first call and cached for the model's lifetime.

Type parameters

Type parameter
K extends string | number
V extends string | number

Parameters

Parameter	Type
name	string
value	K

Returns

Promise<null | IndexArrayType<V>>

Implementation of

IFragmentsModel.getInverseIndexEntry

---

getItem()

getItem(id): Item

Get an item by its ID.

Parameters

Parameter	Type	Description
id	Identifier	The ID of the item to look up.

Returns

Item

---

getItemDrawChunks()

getItemDrawChunks(localIds): Promise<object[]>

Returns per-tile index-buffer chunks for the given items. Each entry carries a tile id and parallel position / size Uint32Arrays giving the start index and index count of every contiguous run of vertices belonging to one of localIds in that tile's index buffer.

Lets a renderer clone a tile mesh sharing its geometry.attributes and index, then call geometry.addGroup(position[i], size[i], 0) for each chunk to draw only the matching slices. No highlight material slot is allocated; the call is read-only.

Parameters

Parameter	Type
localIds	Iterable<number>

Returns

Promise<object[]>

Implementation of

IFragmentsModel.getItemDrawChunks

---

getItems()

getItems(localIds?): Promise<Map<number, RawItemData>>

Gets the items of the model.

Parameters

Parameter	Type	Description
localIds?	Iterable<number>	The local IDs of the items to get. If undefined, it will return all items.

Returns

Promise<Map<number, RawItemData>>

Implementation of

IFragmentsModel.getItems

---

getItemsByQuery()

getItemsByQuery(params, config?): Promise<number[]>

Retrieves items based on the specified query parameters.

Parameters

Parameter	Type	Description
params	ItemsQueryParams	The query parameters used to filter and retrieve items.
config?	ItemsQueryConfig	Optional query configuration.

Returns

Promise<number[]>

A promise that resolves to the items matching the query.

Implementation of

IFragmentsModel.getItemsByQuery

---

getItemsByVisibility()

getItemsByVisibility(visible): Promise<number[]>

Gets the items by visibility.

Parameters

Parameter	Type	Description
visible	boolean	Whether the items should be visible.

Returns

Promise<number[]>

---

getItemsChildren()

getItemsChildren(ids): Promise<number[]>

Get the spatial structure children of the specified items.

Parameters

Parameter	Type	Description
ids	Identifier[]	The IDs of the items to look up.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getItemsChildren

---

getItemsData()

getItemsData(ids, config?): Promise <ItemData[]>

Get all the data of the specified items.

By default, the API returns the item’s built-in attributes only. Relations are not traversed unless explicitly enabled via the config parameter.

Parameters

Parameter	Type	Description
ids	Identifier[]	The IDs of the items to look up.
config?	Partial <ItemsDataConfig>	The configuration of the items data. By default, all
built-in attributes are returned and no relations are loaded.

Returns

Promise <ItemData[]>

Implementation of

IFragmentsModel.getItemsData

Examples

// Retrieve all built-in attributes and all related entities (full graph)
await getItemsData(ids, {
  attributesDefault: true,
  relationsDefault: { attributes: true, relations: true },
});

// Retrieve built-in attributes and Property Sets only (via IsDefinedBy)
await getItemsData(ids, {
  attributesDefault: true,
  relations: {
    IsDefinedBy: { attributes: true, relations: true },
    DefinesOccurrence: { attributes: false, relations: false },
  },
});

---

getItemsGeometry()

getItemsGeometry(localIds, lod): Promise <MeshData[][]>

Retrieves the geometry data for the specified local IDs.

The returned data is structured as an array of arrays of MeshData, which contains the necessary information to reconstruct a THREE.BufferGeometry.

Parameters

Parameter	Type	Default value	Description
localIds	number[]	undefined	An array of local IDs for which the geometry data is requested.
lod	CurrentLod	CurrentLod.GEOMETRY	The level of detail for the geometry (optional).

Returns

Promise <MeshData[][]>

Implementation of

IFragmentsModel.getItemsGeometry

---

getItemsIds()

getItemsIds(): Promise<number[]>

Gets all the items IDs of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getItemsIds

---

getItemsIdsWithGeometry()

getItemsIdsWithGeometry(): Promise<number[]>

Get all the items ids of the model that have geometry.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getItemsIdsWithGeometry

---

getItemsOfCategories()

getItemsOfCategories(categories): Promise<object>

Get all the items of the model that belong to the specified category.

Parameters

Parameter	Type
categories	RegExp[]

Returns

Promise<object>

Implementation of

IFragmentsModel.getItemsOfCategories

---

getItemsVolume()

getItemsVolume(localIds): Promise<number>

Retrieves the total volume of items based on their local IDs.

Parameters

Parameter	Type	Description
localIds	number[]	An array of local IDs representing the items.

Returns

Promise<number>

A promise that resolves to the total volume of the specified items.

Implementation of

IFragmentsModel.getItemsVolume

---

getItemsWithGeometry()

getItemsWithGeometry(): Promise<Item[]>

Get all the items of the model that have geometry.

Returns

Promise<Item[]>

---

getLocalIds()

getLocalIds(): Promise<number[]>

Get all the local IDs of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getLocalIds

---

getLocalIdsByGuids()

getLocalIdsByGuids(guids): Promise<(null | number)[]>

Get the local IDs corresponding to the specified GUIDs.

Parameters

Parameter	Type	Description
guids	string[]	Array of GUIDs to look up.

Returns

Promise<(null | number)[]>

Implementation of

IFragmentsModel.getLocalIdsByGuids

---

getLocalIdsFromItemIds()

getLocalIdsFromItemIds(itemIds): Promise<number[]>

Translate internal itemIds into user-facing localIds, preserving order. Used by GPU-readback pickers that recover item ids from the per-vertex id attribute and need to map back to the public id space.

Parameters

Parameter	Type
itemIds	Iterable<number>

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getLocalIdsFromItemIds

---

getLocalTransforms()

getLocalTransforms(localIds?): Promise<Map<number, RawTransformData>>

Gets the local transforms of the model.

Parameters

Parameter	Type	Description
localIds?	Iterable<number>	The local IDs of the local transforms to get. If undefined, it will return all local transforms.

Returns

Promise<Map<number, RawTransformData>>

Implementation of

IFragmentsModel.getLocalTransforms

---

getLocalTransformsIds()

getLocalTransformsIds(): Promise<number[]>

Gets all the local transforms IDs of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getLocalTransformsIds

---

getMaterials()

getMaterials(localIds?): Promise<Map<number, RawMaterial>>

Gets the materials of the model.

Parameters

Parameter	Type	Description
localIds?	Iterable<number>	The local IDs of the materials to get. If undefined, it will return all materials.

Returns

Promise<Map<number, RawMaterial>>

Implementation of

IFragmentsModel.getMaterials

---

getMaterialsIds()

getMaterialsIds(): Promise<number[]>

Gets all the materials IDs of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getMaterialsIds

---

getMaxLocalId()

getMaxLocalId(): Promise<number>

Get the maximum local ID of the model.

Returns

Promise<number>

Implementation of

IFragmentsModel.getMaxLocalId

---

getMergedBox()

getMergedBox(localIds): Promise<Box3>

Get the merged bounding box of the specified items.

Parameters

Parameter	Type	Description
localIds	number[]	The local IDs of the items to look up.

Returns

Promise<Box3>

---

getMetadata()

getMetadata<T>(): Promise<T>

Get the metadata of the model.

Type parameters

Type parameter	Value
T extends Record<string, any>	Record<string, any>

Returns

Promise<T>

Implementation of

IFragmentsModel.getMetadata

---

getPositions()

getPositions(localIds?): Promise<Vector3[]>

Get the absolute positions of the specified items.

Parameters

Parameter	Type	Description
localIds?	number[]	The local IDs of the items to look up.

Returns

Promise<Vector3[]>

Implementation of

IFragmentsModel.getPositions

---

getRelationNames()

getRelationNames(): Promise<string[]>

Retrieves the names of all relations associated with this model.

Returns

Promise<string[]>

A promise that resolves to an array of strings, where each string is the name of a relation.

---

getRelations()

getRelations(localIds?): Promise<Map<number, RawRelationData>>

Gets the relations of the model.

Parameters

Parameter	Type	Description
localIds?	number[]	The local IDs of the relations to get. If undefined, it will return all relations.

Returns

Promise<Map<number, RawRelationData>>

Implementation of

IFragmentsModel.getRelations

---

getRepresentations()

getRepresentations(localIds?): Promise<Map<number, RawRepresentation>>

Gets the representations of the model.

Parameters

Parameter	Type	Description
localIds?	Iterable<number>	The local IDs of the representations to get. If undefined, it will return all representations.

Returns

Promise<Map<number, RawRepresentation>>

Implementation of

IFragmentsModel.getRepresentations

---

getRepresentationsIds()

getRepresentationsIds(): Promise<number[]>

Gets all the representations IDs of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getRepresentationsIds

---

getSamples()

getSamples(localIds?): Promise<Map<number, RawSample>>

Gets the samples of the model.

Parameters

Parameter	Type	Description
localIds?	Iterable<number>	The local IDs of the samples to get. If undefined, it will return all samples.

Returns

Promise<Map<number, RawSample>>

Implementation of

IFragmentsModel.getSamples

---

getSamplesIds()

getSamplesIds(): Promise<number[]>

Gets all the samples IDs of the model.

Returns

Promise<number[]>

Implementation of

IFragmentsModel.getSamplesIds

---

getSection()

getSection(plane, localIds?): Promise<ModelSection>

Gets the section (edges and fills) between the model and a given clipping plane.

Parameters

Parameter	Type	Description
plane	Plane	The plane to get the section of.
localIds?	number[]	The local IDs of the items to get the section of. If undefined, it will return the section of all items.

Returns

Promise<ModelSection>

Implementation of

IFragmentsModel.getSection

---

getSequenced()

Experimental

getSequenced<T, U>(result, fromItems, inputs?): Promise <InformationResultType<T>>

Processes a sequence of actions in the worker and computes the result based on the provided input.

Type parameters

Type parameter
T extends ItemInformationType
U extends ItemSelectionType

Parameters

Parameter	Type	Description
result	T	The type of item information to compute, used to select the appropriate result function.
fromItems	U[]	An array of selection types, each corresponding to an items selector function.
inputs?	object	-
inputs.result?	ResultInputType<T>	-
inputs.selector?	Partial<Record<U, SelectionInputType<U>>>	-

Returns

Promise <InformationResultType<T>>

The computed result after processing the sequence of actions, or null if the result function is not found.

---

getSpatialStructure()

getSpatialStructure(): Promise <SpatialTreeItem>

Get the spatial structure of the model.

Returns

Promise <SpatialTreeItem>

Implementation of

IFragmentsModel.getSpatialStructure

---

getSubsetBuffer()

getSubsetBuffer(localIds, raw): Promise<any>

Get a buffer containing only the specified items and their associated geometry.

Parameters

Parameter	Type	Default value	Description
localIds	number[]	undefined	The local IDs of the items to include.
raw	boolean	false	Whether to get the raw buffer. If false, it will be compressed.

Returns

Promise<any>

Implementation of

IFragmentsModel.getSubsetBuffer

---

getVerticalAlignments()

getVerticalAlignments(): Promise<Group<Object3DEventMap>>

Get the vertical alignments of the model (if any).

Returns

Promise<Group<Object3DEventMap>>

---

getVisible()

getVisible(localIds): Promise<boolean[]>

Gets the items by visibility.

Parameters

Parameter	Type	Description
localIds	number[]	The local IDs of the items to get the visibility of.

Returns

Promise<boolean[]>

---

hasIndexEntry()

hasIndexEntry<K>(name, key): Promise<boolean>

Test whether a key exists in the named index without resolving its value.

Type parameters

Type parameter
K extends string | number

Parameters

Parameter	Type
name	string
key	K

Returns

Promise<boolean>

Implementation of

IFragmentsModel.hasIndexEntry

---

highlight()

highlight(localIds, highlightMaterial): Promise<void>

Highlights the specified items.

Parameters

Parameter	Type	Description
localIds	undefined | number[]	The local IDs of the items to highlight. If undefined, all items will be highlighted.
highlightMaterial	MaterialDefinition	The material to use for the highlight.

Returns

Promise<void>

---

raycast()

raycast(data): Promise<null | RaycastResult>

Performs a raycast on the model.

Parameters

Parameter	Type	Description
data	RaycastData	The data of the raycast.

Returns

Promise<null | RaycastResult>

---

raycastAll()

raycastAll(data): Promise<null | RaycastResult[]>

Performs a raycast on the model and returns all the results.

Parameters

Parameter	Type	Description
data	RaycastData	The data of the raycast.

Returns

Promise<null | RaycastResult[]>

---

raycastWithSnapping()

raycastWithSnapping(data): Promise<null | RaycastResult[]>

Performs a raycast on the model with snapping.

Parameters

Parameter	Type	Description
data	SnappingRaycastData	The data of the raycast.

Returns

Promise<null | RaycastResult[]>

---

rectangleRaycast()

rectangleRaycast(data): Promise<null | RectangleRaycastResult>

Performs a rectangle raycast on the model.

Parameters

Parameter	Type	Description
data	RectangleRaycastData	The data of the rectangle raycast.

Returns

Promise<null | RectangleRaycastResult>

---

resetColor()

resetColor(localIds): Promise<void>

Resets the color of the specified items to their original color while preserving other highlight properties (like opacity).

Parameters

Parameter	Type	Description
localIds	undefined | number[]	The local IDs of the items to reset color for. If undefined, all items will be affected.

Returns

Promise<void>

---

resetHighlight()

resetHighlight(localIds?): Promise<void>

Resets the highlight of the specified items.

Parameters

Parameter	Type	Description
localIds?	number[]	The local IDs of the items to reset the highlight of. If undefined, it will reset the highlight of all items.

Returns

Promise<void>

---

resetOpacity()

resetOpacity(localIds): Promise<void>

Resets the opacity of the specified items to their original opacity while preserving other highlight properties (like color).

Parameters

Parameter	Type	Description
localIds	undefined | number[]	The local IDs of the items to reset opacity for. If undefined, all items will be affected.

Returns

Promise<void>

---

resetVisible()

resetVisible(): Promise<void>

Resets the visibility of all items.

Returns

Promise<void>

---

setColor()

setColor(localIds, color): Promise<void>

Applies a color to the specified items while preserving original material properties.

Parameters

Parameter	Type	Description
localIds	undefined | number[]	The local IDs of the items to color. If undefined, all items will be colored.
color	Color	The color to apply.

Returns

Promise<void>

---

setGridLabelMaterial()

setGridLabelMaterial(material): void

Replace the shared grid label material. The previous material is disposed after the swap.

Parameters

Parameter	Type
material	Material

Returns

void

---

setGridMaterial()

setGridMaterial(material): void

Replace the shared grid material. The previous material is disposed after the swap.

Parameters

Parameter	Type
material	LineBasicMaterial

Returns

void

---

setLodMode()

setLodMode(lodMode): Promise<void>

Sets the LOD / culling mode of the model.

Parameters

Parameter	Type	Description
lodMode	LodMode	The LOD / culling mode to set.

Returns

Promise<void>

---

setOpacity()

setOpacity(localIds, opacity): Promise<void>

Applies an opacity to the specified items while preserving original material properties (like color).

Parameters

Parameter	Type	Description
localIds	undefined | number[]	The local IDs of the items to change opacity for. If undefined, all items will be affected.
opacity	number	The opacity to apply (0 to 1).

Returns

Promise<void>

---

setVisible()

setVisible(localIds, visible): Promise<void>

Sets the visibility of the specified items.

Parameters

Parameter	Type	Description
localIds	undefined | number[]	The local IDs of the items to set the visibility of.
visible	boolean	Whether the items should be visible.

Returns

Promise<void>

---

toggleVisible()

toggleVisible(localIds?): Promise<void>

Toggles the visibility of the specified items.

Parameters

Parameter	Type	Description
localIds?	number[]	The local IDs of the items to toggle the visibility of.

Returns

Promise<void>

---

useCamera()

useCamera(camera): void

Sets a camera for the model. The model will use it to load tiles dinamically depending on the users view (e.g. hiding items that are not in the view, setting the LOD to far away items, etc).

Parameters

Parameter	Type	Description
camera	PerspectiveCamera | OrthographicCamera	The camera to use.

Returns

void

---

useClippingPlanes()

useClippingPlanes(planes): void

Sets the clipping planes the model culls against, in world space. Pass the same array your renderer clips with (e.g. renderer.clippingPlanes): the model keeps the reference and reads it on every view refresh, so adding, removing or moving planes in place is picked up without calling this again. Assigning a new array to renderer.clippingPlanes is not: call this again with the new array.

Parameters

Parameter	Type	Description
planes	Plane[]	The clipping planes to use.

Returns

void