Transform.TransformPoint

Description

Transforms position from local space to world space.

Note that the returned position is affected by scale. Use Transform.TransformDirection if you are dealing with direction vectors.

You can perform the opposite conversion, from world to local space using Transform.InverseTransformPoint.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public GameObject someObject;
    public Vector3 thePosition;

    void Start()
    {
        // Instantiate an object to the right of the current object
        thePosition = transform.TransformPoint(Vector3.right * 2);
        Instantiate(someObject, thePosition, someObject.transform.rotation);
    }
}

Description

Transforms the position x, y, z from local space to world space.

Note that the returned position is affected by scale. Use Transform.TransformDirection if you are dealing with directions.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public GameObject someObject;

    void Start()
    {
        // Instantiate an object to the right of the current object
        Vector3 thePosition = transform.TransformPoint(2, 0, 0);
        Instantiate(someObject, thePosition, someObject.transform.rotation);
    }
}