# Clear()

> Clears all the vertices and shapes from the PhysicsShapeGroup.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public void Clear()
```

### Remarks

This call clears the lists used to store both vertices and shapes but retains the current shape group capacity (effectively creating an empty shape group).

### Examples

```csharp
using UnityEngine;
using UnityEngine.Assertions;

public class Example : MonoBehaviour
{
    void Start()
    {
        // Create a shape group.
        var shapeGroup = new PhysicsShapeGroup2D();

        // Add a Circle to the shape group.
        shapeGroup.AddCircle
            (
                center: Vector2.zero,
                radius: 1f
            );

        // Add a Box to the shape group.
        shapeGroup.AddBox
            (
                center: new Vector2(3f, 2f),
                size: new Vector2(1f, 1f)
            );

        // Validate the contents.
        Assert.AreEqual(1 + 1, shapeGroup.shapeCount);
        Assert.AreEqual(1 + 4, shapeGroup.vertexCount);
        Assert.AreEqual(PhysicsShapeType2D.Circle, shapeGroup.GetShape(0).shapeType);
        Assert.AreEqual(PhysicsShapeType2D.Polygon, shapeGroup.GetShape(1).shapeType);

        // Clear the shape group.
        shapeGroup.Clear();

        // Validate the contents.
        Assert.AreEqual(0, shapeGroup.shapeCount);
        Assert.AreEqual(0, shapeGroup.vertexCount);
    }
}
```