How do I make an object rotate while pressing right mouse button?

Question

Hello, this is my first time posting here. :) So right now I have a script that lets me rotate the object while holding down left mouse button. My question is - How do I make an object rotate while pressing right mouse button? My code right now:

 float rotSpeed = 20;

 void OnMouseDrag()
 {
     float rotX = Input.GetAxis("Mouse X") * rotSpeed * Mathf.Deg2Rad;
     float rotY = Input.GetAxis("Mouse Y") * rotSpeed * Mathf.Deg2Rad;

     transform.RotateAround(Vector3.up, -rotX);
     transform.RotateAround(Vector3.right, rotY);
 }

Can someone help me? I'm new at coding.

Answer 1

Best Answer

Answer by Hellium · Apr 23, 2018 at 07:52 AM

I advise you to use the EventSystem instead of the plain MonoBehaviour function OnMouseDrag

In the top menu, click on GameObject > UI > EventSystem
Select your camera and attach the PhysicsRaycaster component
Your code should look like this:

 using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;

 public class DragUsingRightButton : MonoBehaviour, IBeginDragHandler, IDragHandler
 {
     public float rotSpeed = 5 ;
     public void OnBeginDrag(PointerEventData data)
     {
         // Do nothing, but keep this function if you want `OnDrag` to be called    
     }
 
     public void OnDrag(PointerEventData data)
     {
         if( data.button != PointerEventData.InputButton.Right)
             return;

          float rotX = data.delta.x * rotSpeed * Mathf.Deg2Rad;
          float rotY = data.delta.y * rotSpeed * Mathf.Deg2Rad;
          transform.RotateAround(Vector3.up, -rotX);
          transform.RotateAround(Vector3.right, rotY);
     }
 }

ORIGINAL ANSWER

Have you simply tried to check whether the right mouse button is held down?

  void OnMouseDrag()
  {
      if( !Input.GetMouseButton(1) )
          return ;
 
          float rotX = Input.GetAxis("Mouse X") * rotSpeed * Mathf.Deg2Rad;
          float rotY = Input.GetAxis("Mouse Y") * rotSpeed * Mathf.Deg2Rad;
          transform.RotateAround(Vector3.up, -rotX);
          transform.RotateAround(Vector3.right, rotY);
  }

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PaulaOstupe · Apr 23, 2018 at 10:14 AM 0

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Unfortunately this doesn't work :( This script doesn't let me rotate the object in any way. $$anonymous$$aybe it's because On$$anonymous$$ouseDrag works with the left mouse button?

Hellium PaulaOstupe · Apr 23, 2018 at 03:43 PM -1

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I've added to my answer a complete new solution. Give it a try.

PaulaOstupe Hellium · Apr 24, 2018 at 01:43 PM 0

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$$anonymous$$aybe you could help me with this problem too? https://answers.unity.com/questions/1498087/capture-screenshots-and-save-them-in-folder.html

PaulaOstupe · Apr 24, 2018 at 08:05 AM 0

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Thank you!!!!

Answer 2

Answer by PaulaOstupe · Apr 24, 2018 at 08:08 AM

The only thing I added for it to work was "public int RotSpeed = 5". This is the final code:

 using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;
 
 public class rotate_object : MonoBehaviour, IBeginDragHandler, IDragHandler
 {
    
     public int RotSpeed = 5;
 
     public void OnBeginDrag(PointerEventData data)
     {
         // Do nothing, but keep this function if you want `OnDrag` to be called    
     }
 
     public void OnDrag(PointerEventData data)
     {
         if (data.button != PointerEventData.InputButton.Right)
             return;
         float rotX = data.delta.x * RotSpeed * Mathf.Deg2Rad;
         float rotY = data.delta.y * RotSpeed * Mathf.Deg2Rad;
         transform.RotateAround(Vector3.up, -rotX);
         transform.RotateAround(Vector3.right, rotY);
     }
 }

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How do I make an object rotate while pressing right mouse button?

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