MonoBehaviour.OnMouseDrag()

Description

OnMouseDrag is called when the user has clicked on a GUIElement or Collider and is still holding down the mouse.

OnMouseDrag is called every frame while the mouse is down.

// Darken the material color while user holds down the mouse.
var rend: Renderer;

function Start() {
	rend = GetComponent.<Renderer>();
}


function OnMouseDrag () {
	rend.material.color -= Color.white * Time.deltaTime;
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public Renderer rend;
    void Start() {
        rend = GetComponent<Renderer>();
    }
    void OnMouseDrag() {
        rend.material.color -= Color.white * Time.deltaTime;
    }
}

This function is not called on objects that belong to Ignore Raycast layer.

OnMouseDrag can be a co-routine, simply use the yield statement in the function. This event is sent to all scripts attached to the Collider or GUIElement.