# fraction

> The fraction of the distance specified to the physics query before it detected a Collider2D.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.3/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public float fraction { get; set; }
```

### Remarks

When a physics query is used, it has a start position and an explicit end position or a direction and distance. The `fraction` is a value in the range of `0` and `1` which is a representation of the returned [RaycastHit2D.distance](/engine/6000.3/script-reference/unityengine/raycasthit2d/distance.md) result (see code example).

If the physics query does not allow specifying an explicit end position or it has a default distance of `infinity` then the `fraction` is identical to the returned [RaycastHit2D.distance](/engine/6000.3/script-reference/unityengine/raycasthit2d/distance.md) and therefore will not be in the range of `0` and `1`.

Additional Resources: [RaycastHit2D.distance](/engine/6000.3/script-reference/unityengine/raycasthit2d/distance.md).

### Examples

```csharp
using UnityEngine;

public class ExampleClass : MonoBehaviour
{
    public Vector2 direction;

    void Update()
    {
        // Cast a ray in the specified direction up to 10 world units away.
        RaycastHit2D hit = Physics2D.Raycast(transform.position, direction, 10f);

        // If we hit something then indicate if it was less-than or greater-than halfway of the physics query.
        if (hit)
        {
            if (hit.fraction < 0.5f)
                Debug.Log("Hit something before halfway!");
            else
               Debug.Log("Hit something after halfway!");
        }
    }
}
```