MonoBehaviour.OnMouseDrag()

Description

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

OnMouseDrag is called every frame while the mouse is down.

This event is sent to all scripts attached to the Collider. This function is not called on objects that belong to Ignore Raycast layer.

This function is called on Colliders and 2D Colliders marked as trigger when the following properties are set to true:

• For 3D physics: Physics.queriesHitTriggers
• For 2D physics: Physics2D.queriesHitTriggers

OnMouseDrag can be a coroutine.

Note: New projects created with this version of Unity are pre-configured to use a version of the Input System that doesn't support this callback. To support this callback in your project, you can change the Active Input Handling setting in Player settings to either Both or Input Manager (Old). However, doing so is not recommended as the legacy Input Manager is nearing the end of support and Input System is the recommended solution for new projects. For more information, refer to Migrating from the old Input Manager.

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;
    }
}