Speckle Docs

# Intersections

Entry point for intersecting and obtaining intersection data from the scene. Accessible from SpeckleRenderer

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Methods

intersect intersectRay

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Typedefs

ExtendedIntersection ExtendedMeshIntersection MeshIntersection

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Methods

# intersect

intersect(
    scene: Scene,
    camera: Camera,
    point: Vector2,
    castLayers: ObjectLayers.STREAM_CONTENT_MESH,
    nearest?: boolean,
    bounds?: Box3,
    firstOnly?: boolean
  ): Array<ExtendedMeshIntersection> | null

intersect(
    scene: Scene,
    camera: Camera,
    point: Vector2,
    castLayers?: Array<ObjectLayers>,
    nearest?: boolean,
    bounds?: Box3,
    firstOnly?: boolean
  ): Array<ExtendedIntersection> | null
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Scene intersect function.

TIP

All intersect calls from this class will use the available acceleration structures. This makes the intersection significantly faster than using your own three.js raycasters.

Parameters

  • scene: Scene (opens new window)
  • camera: Camera (opens new window)
  • point: The NDC point to cast the ray from
  • castLayers: The ObjectLayers enabled on the raycaster
  • nearest: If the results should be sorted by dinstance. i.e nearest first
  • bounds: An optional bounds where the intersecting takes place. Everything outside this bounds is disregarded from the result list for this cast. Any object outside of these layers is disregarded from intersection
  • firstOnly: When this flag is enabled the acceleration structure will stop traversing after encountering the first intersection. Only applies to meshes

Returns: Array< Intersection > Three.js defined intersection

# intersectRay

intersectRay(
    scene: Scene,
    camera: Camera,
    ray: Ray,
    castLayers: ObjectLayers.STREAM_CONTENT_MESH,
    nearest?: boolean,
    bounds?: Box3,
    firstOnly?: boolean
  ): Array<ExtendedMeshIntersection> | null
intersectRay(
    scene: Scene,
    camera: Camera,
    ray: Ray,
    castLayers?: Array<ObjectLayers>,
    nearest?: boolean,
    bounds?: Box3,
    firstOnly?: boolean
  ): Array<ExtendedIntersection> | null
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Scene intersect function using a provided Ray.

TIP

All intersect calls from this class will use the available acceleration structures. This makes the intersection significantly faster than using your own three.js raycasters.

Parameters

  • scene: Scene (opens new window)
  • camera: Camera (opens new window)
  • ray: The ray to use for casting
  • castLayers: The ObjectLayers enabled on the raycaster
  • nearest: If the results should be sorted by dinstance. i.e nearest first
  • bounds: An optional bounds where the intersecting takes place. Everything outside this bounds is disregarded from the result list for this cast. Any object outside of these layers is disregarded from intersection
  • firstOnly: When this flag is enabled the acceleration structure will stop traversing after encountering the first intersection. Only applies to meshes

Returns: Array< Intersection > Three.js defined intersection

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Typedefs

# ExtendedIntersection

interface ExtendedIntersection extends Intersection {
  batchObject?: BatchObject;
  pointOnLine?: Material;
}
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Extension of three.js's default Intersection.

# ExtendedMeshIntersection

interface ExtendedMeshIntersection extends MeshIntersection {
  batchObject: BatchObject
  object: SpeckleMesh | SpeckleInstancedMesh
}
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# MeshIntersection

interface MeshIntersection extends Intersection {
  face: Face
  faceIndex: number
}
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