# PixelCastHit ``` struct PixelCastHit ``` ## Topics ### Instance Properties [`var barycentric: SIMD3?`](/documentation/RealityKit/PixelCastHit/barycentric) The barycentric coordinate of the primitive. See the discussion of [[barycentric_coord]] in Section “5.2.3.4 Fragment Function Input Attributes” of Metal Shading Language Specification [`var entity: Entity`](/documentation/RealityKit/PixelCastHit/entity) The entity that was hit. [`var instance: UInt32`](/documentation/RealityKit/PixelCastHit/instance) The instance within the MeshResource of the intersection. This can be used to index into MeshResource.contents.instances [`var meshPart: UInt64`](/documentation/RealityKit/PixelCastHit/meshPart) The mesh part id of the entity that was selected by the hit. [`var normal: SIMD3`](/documentation/RealityKit/PixelCastHit/normal) The surface normal at the point of intersection, in scene space. [`var position: SIMD3`](/documentation/RealityKit/PixelCastHit/position) The surface position at the point of intersection, in scene space. [`var primitive: UInt32`](/documentation/RealityKit/PixelCastHit/primitive) The per-primitive identifier used with barycentric coordinates. ## Relationships ### Conforms To [`Equatable`](/documentation/Swift/Equatable) [`Sendable`](/documentation/Swift/Sendable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)