TwinfinityIfcMeshExtension

Additional data that decorates Mesh instances with geometry that represents IFC objects.

Index

Constructors

• constructor

Properties

• cullOnCameraMove
• cullingDistance
• indiceCount
• isTransparent
• metricBoundingRadius
• primitiveCount
• productsAndMeshes

Methods

• dispose
• distanceToCamera
• isVisible

Constructors

publicconstructor

• new TwinfinityIfcMeshExtension(_mesh: Mesh, _materials: Materials, geometry3D: Geometry3d): TwinfinityIfcMeshExtension

• Constructor

  ---

  Parameters

  • _mesh: Mesh

    Mesh instance to connect the extension to.

  • _materials: Materials

    Materials instance

  • geometry3D: Geometry3d

    Geometry3dHandle instance representing the geometry which will be applied to _mesh.

  Returns TwinfinityIfcMeshExtension

Properties

publiccullOnCameraMove

cullOnCameraMove: boolean

publicreadonlycullingDistance

cullingDistance: number

Distance from camera where _mesh will become visibile. If < 0 it is always visible.

publicreadonlyindiceCount

indiceCount: number

Number of indices this Mesh contains.

publicreadonlyisTransparent

isTransparent: boolean

true if this Mesh contains transparent objects (in which case it cannot contain opaque objects and false if it does)

publicreadonlymetricBoundingRadius

metricBoundingRadius: number

Exact metric bounding-sphere radius (half the diagonal of Geometry3d.aabb), in world units. Babylon's boundingSphere.radius is in the mesh's LOCAL space — for quantized meshes that space is the normalized [-1, 1] cube (radius ≈ √3 regardless of real size), and radiusWorld derives from the local cube × max scale axis, inflating elongated shapes by up to √3. This value is computed from the metric AABB at build time and has neither problem. Assumes no scaled ancestor transforms (the IFC pretransform is an axis permutation), which the pre-quantization culling code already relied on.

publicreadonlyprimitiveCount

primitiveCount: number

Number of vertices, uv's and normals this Mesh contains.

publicreadonlyproductsAndMeshes

productsAndMeshes: BimIfcProductsAndMeshes

All BimIfcObject's and their BimProductMesh'es that makes up the Mesh geometry.'

Methods

publicdispose

• dispose(): void

• Returns void

publicdistanceToCamera

• distanceToCamera(camera: Camera): number

• Gets the distance from an mesh to the camera

  ---

  Parameters

  • camera: Camera

    Camera to use when checking distance

  Returns number

publicisVisible

• isVisible(camera: Camera, distance?: number): boolean

• true if visible from the supplied cameras point of view. Otherwise false.

  ---

  Parameters

  • camera: Camera

    Camera to use when checking visibility

  • optionaldistance: number

  Returns boolean