API Reference › core-geometry› Polyface › PolyfaceQuery › PartitionFacetIndicesByVisibilityVector

partitionFacetIndicesByVisibilityVector MethodStatic

  • Examine the normal orientation for each faces.
  • Separate to 3 partitions:
    • Facets with normal in the positive direction of the vectorToEye (partition 0).
    • Facets with normal in the negative direction of the vectorToEye (partition 1).
    • Facets nearly perpendicular to the view vector (partition 2).
  • Return array of arrays of facet indices.

partitionFacetIndicesByVisibilityVector(polyface: PolyfaceVisitor | Polyface, vectorToEye: Vector3d, sideAngleTolerance: Angle): number[][]

Parameter Type Description
polyface PolyfaceVisitor | Polyface  
vectorToEye Vector3d  
sideAngleTolerance Angle  

Returns - number[][]

Defined in

Last Updated: 24 June, 2025