Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.
CloseFor some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.
Close| origin | The starting point of the ray in world coordinates. |
| direction | The direction of the ray. |
| maxDistance | The max distance the ray should check for collisions. |
| layerMask | A Layer mask that is used to selectively ignore Colliders when casting a ray. |
| queryTriggerInteraction | Specifies whether this query should hit Triggers. |
bool True if the ray intersects with a Collider, otherwise false.
Casts a ray, from point origin, in direction direction, of length maxDistance, against all colliders in the Scene.
You may optionally provide a LayerMask, to filter out any Colliders you aren't interested in generating collisions with.
Specifying queryTriggerInteraction allows you to control whether or not Trigger colliders generate a hit, or whether to use the global Physics.queriesHitTriggers setting.
This example creates a simple Raycast, projecting forwards from the position of the object's current position, extending for 10 units.
using UnityEngine;
public class ExampleClass : MonoBehaviour { void FixedUpdate() { Vector3 fwd = transform.TransformDirection(Vector3.forward);
if (Physics.Raycast(transform.position, fwd, 10)) print("There is something in front of the object!"); } }
| origin | The starting point of the ray in world coordinates. |
| direction | The direction of the ray. |
| hitInfo | If true is returned, hitInfo will contain more information about where the collider was hit. (See Also: RaycastHit). |
| maxDistance | The max distance the ray should check for collisions. |
| layerMask | A Layer mask that is used to selectively ignore Colliders when casting a ray. |
| queryTriggerInteraction | Specifies whether this query should hit Triggers. |
bool True if the ray intersects with a Collider, otherwise false.
Casts a ray, from point origin, in direction direction, of length maxDistance, against all colliders in the Scene.
This method generates no garbage.
using UnityEngine; public class RaycastExample : MonoBehaviour { void FixedUpdate() { RaycastHit hit;
if (Physics.Raycast(transform.position, -Vector3.up, out hit)) print("Found an object - distance: " + hit.distance); } }
| origin | The starting point and direction of the ray. |
| direction | The direction of the ray. |
| raycastHits | The buffer to store the hits into. |
| maxDistance | The max distance the rayhit is allowed to be from the start of the ray. |
| layerMask | A Layer mask that is used to selectively ignore colliders when casting a ray. |
| queryTriggerInteraction | The amount of hits stored into the results buffer. |
int True if the ray intersects with a Collider, otherwise false.
Casts a ray, from point origin, in direction direction, of length maxDistance, against all colliders in the Scene.
This method generates no garbage.