The Ray data type represents a half-line, which starts at a point and goes in a direction infinitely. Rays are most used with the FindPartOnRay method of the Workspace.

Ray Lua Object
Constructors	Vector3 direction) Creates a new Ray at origin with a direction of direction
Fields	Vector3 Origin The start position of the Ray Vector3 Direction The direction that the Ray is pointing
Methods	Number Distance(point) Returns the shortest distance from the ray to a point Vector3 ClosestPoint(point) Returns the closest point on the Ray to the given point

Referenced by

Data types
Basic Lua types	nil · boolean · number · string · function · userdata · thread · table
Roblox types	Colors BrickColor · Color3 · ColorSequence · ColorSequenceKeypoint Sequences NumberSequence · NumberSequenceKeypoint Events RBXScriptSignal · RBXScriptConnection Vectors Vector2 · Vector3 · Vector2int16 · Vector3int16 Instances Instance Internal types BinaryString · ContentId · ProtectedString · QDir · QFont Other types Axes · CatalogSearchParams · CFrame · DateTime · DockWidgetPluginGuiInfo · Enum · Faces · FloatCurveKey · NumberRange · OverlapParams · Path2DControlPoint · PathWaypoint · PhysicalProperties · Random · Ray · RaycastParams · RaycastResult · RbxLibrary · Rect · Region3 · Region3int16 · RotationCurveKey · Secret · SecurityCapabilities · SharedTable · StamperController · TweenInfo · UDim · UDim2 · UniqueId
API reference only	double · float · int · int64 · void · Tuple · Variant