# textureCoord

> The uv texture coordinate at the collision location.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.PhysicsModule

```csharp
public Vector2 textureCoord { get; }
```

### Remarks

A ray is fired into the Scene.  The `textureCoord` is the location where the ray has hit a collider.  /RaycastHit.\_textureCoord/ is a texture coordinate when a hit occurs.  A [Vector2](/engine/6000.6/script-reference/unityengine/vector2.md) zero is returned if no mesh collider is present in the `GameObject`. This property can be accessed off the main thread.

**Note:** A [RaycastHit.textureCoord](/engine/6000.6/script-reference/unityengine/raycasthit/texturecoord.md) requires the collider to be a [MeshCollider](/engine/6000.6/script-reference/unityengine/meshcollider.md).

**Note:** In builds, [RaycastHit.textureCoord](/engine/6000.6/script-reference/unityengine/raycasthit/texturecoord.md) will return (0, 0) unless the mesh’s import settings have Read/Write Enabled checked.

```csharp
// Write black pixels onto the GameObject that is located
// by the script. The script is attached to the camera.
// Determine where the collider hits and modify the texture at that point.
//
// Note that the MeshCollider on the GameObject must have Convex turned off. This allows
// concave GameObjects to be included in collision in this example.
//
// Also to allow the texture to be updated by mouse button clicks it must have the Read/Write
// Enabled option set to true in its Advanced import settings.

using UnityEngine;
using System.Collections;
using UnityEngine.InputSystem;

public class ExampleClass : MonoBehaviour
{
    public Camera cam;

    void Start()
    {
        cam = GetComponent<Camera>();
    }

    void Update()
    {
        if (!Mouse.current.leftButton.isPressed)
            return;

        RaycastHit hit;
        if (!Physics.Raycast(cam.ScreenPointToRay(Mouse.current.position.ReadValue()), out hit))
            return;

        Renderer rend = hit.transform.GetComponent<Renderer>();
        MeshCollider meshCollider = hit.collider as MeshCollider;

        if (rend == null || rend.sharedMaterial == null || rend.sharedMaterial.mainTexture == null || meshCollider == null)
            return;

        Texture2D tex = rend.material.mainTexture as Texture2D;
        Vector2 pixelUV = hit.textureCoord;
        pixelUV.x *= tex.width;
        pixelUV.y *= tex.height;

        tex.SetPixel((int)pixelUV.x, (int)pixelUV.y, Color.black);
        tex.Apply();
    }
}
```

Additional Resources: [Physics.Raycast](/engine/6000.6/script-reference/unityengine/physics/raycast.md), [Physics.Linecast](/engine/6000.6/script-reference/unityengine/physics/linecast.md), [Physics.RaycastAll](/engine/6000.6/script-reference/unityengine/physics/raycastall.md).