# WorldToViewportPoint

> Transforms position from world space into viewport space.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

## WorldToViewportPoint(Vector3, MonoOrStereoscopicEye)

Transforms `position` from world space into viewport space.

```csharp
public Vector3 WorldToViewportPoint(Vector3 position, Camera.MonoOrStereoscopicEye eye)
```

### Parameters

**** (\[Vector3]\(/engine/6000.5/script-reference/unityengine/vector3)): A 3D point in world space.**** (\[MonoOrStereoscopicEye]\(/engine/6000.5/script-reference/unityengine/camera/monoorstereoscopiceye)): Optional argument that can be used to specify which eye transform to use. Default is Mono.

### Returns

| Type                                                              | Description |
| ----------------------------------------------------------------- | ----------- |
| [Vector3](/engine/6000.5/script-reference/unityengine/vector3.md) |             |

### Remarks

Viewport space is normalized and relative to the camera. The bottom-left of the camera is (0,0); the top-right is (1,1). The z position is in world units from the camera.

### Examples

```csharp
// Finds out whether target is on the left or right side of the screen
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Transform target;
    Camera cam;

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

    void Update()
    {
        Vector3 viewPos = cam.WorldToViewportPoint(target.position);
        if (viewPos.x > 0.5F)
            print("target is on the right side!");
        else
            print("target is on the left side!");
    }
}
```

## WorldToViewportPoint(Vector3)

Transforms `position` from world space into viewport space.

```csharp
public Vector3 WorldToViewportPoint(Vector3 position)
```

### Parameters

**** (\[Vector3]\(/engine/6000.5/script-reference/unityengine/vector3)): A 3D point in world space.

### Returns

| Type                                                              | Description |
| ----------------------------------------------------------------- | ----------- |
| [Vector3](/engine/6000.5/script-reference/unityengine/vector3.md) |             |

### Remarks

Viewport space is normalized and relative to the camera. The bottom-left of the camera is (0,0); the top-right is (1,1). The z position is in world units from the camera.

### Examples

```csharp
// Finds out whether target is on the left or right side of the screen
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Transform target;
    Camera cam;

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

    void Update()
    {
        Vector3 viewPos = cam.WorldToViewportPoint(target.position);
        if (viewPos.x > 0.5F)
            print("target is on the right side!");
        else
            print("target is on the left side!");
    }
}
```