# Primitive3DProtocol Implementations ## Topics ### Instance Properties [`var isFinite: Bool`](/documentation/Spatial/Ray3DFloat/isFinite) A Boolean value that indicates whether all of the values of the ray are finite. [`var isNaN: Bool`](/documentation/Spatial/Ray3DFloat/isNaN) A Boolean value that indicates whether all of the values of the ray are finite. [`var isZero: Bool`](/documentation/Spatial/Ray3DFloat/isZero) A Boolean value that indicates whether all of the values of the ray are zero. ### Instance Methods [`func apply(Pose3DFloat)`](/documentation/Spatial/Ray3DFloat/apply(_:)) Applies a pose. [`func applying(Pose3DFloat) -> Ray3DFloat`](/documentation/Spatial/Ray3DFloat/applying(_:)-3spgk) Returns a ray that’s transformed by the specified pose. [`func applying(ProjectiveTransform3DFloat) -> Ray3DFloat`](/documentation/Spatial/Ray3DFloat/applying(_:)-6phxw) Returns a ray that’s transformed by the specified projective transform. [`func applying(AffineTransform3DFloat) -> Ray3DFloat`](/documentation/Spatial/Ray3DFloat/applying(_:)-7miic) Returns a ray that’s transformed by the specified affine transform. [`func unapplying(Pose3DFloat) -> Ray3DFloat`](/documentation/Spatial/Ray3DFloat/unapplying(_:)-2ouak) Returns a ray that’s transformed by the inverse of the specified pose. [`func unapplying(ProjectiveTransform3DFloat) -> Ray3DFloat`](/documentation/Spatial/Ray3DFloat/unapplying(_:)-6pcxp) Returns a ray that’s transformed by the inverse of the specified projective transform. [`func unapplying(AffineTransform3DFloat) -> Ray3DFloat`](/documentation/Spatial/Ray3DFloat/unapplying(_:)-9mbz3) Returns a ray that’s transformed by the inverse of the specified affine transform. --- 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)