unity drag camera code example

Example 1: unity 2d Drag object

private Vector2 screenPoint;
    private Vector3 offset;

    void OnMouseDown() {

        offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector2(Input.mousePosition.x, Input.mousePosition.y));
    }

    void OnMouseDrag()
    {
        Vector2 curScreenPoint = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
        Vector2 curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
        transform.position = curPosition;
    }

Example 2: drag object unity 2d

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DragAndDrop : MonoBehaviour
{

    private bool isDragging;

    public void OnMouseDown()
    {
        isDragging = true;
    }

    public void OnMouseUp()
    {
        isDragging = false;
    }

    void Update()
    {
        if (isDragging) {
            Vector2 mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
            transform.Translate(mousePosition);
        }
    }
}

Example 3: unity drag camera

if(Input.GetMouseButtonDown(0))         {             bDragging = true;             oldPos = transform.position;             panOrigin = Camera.main.ScreenToViewportPoint(Input.mousePosition);                    //Get the ScreenVector the mouse clicked         }          if(Input.GetMouseButton(0))         {             Vector3 pos = Camera.main.ScreenToViewportPoint(Input.mousePosition) - panOrigin;    //Get the difference between where the mouse clicked and where it moved             transform.position = oldPos + -pos * panSpeed;                                         //Move the position of the camera to simulate a drag, speed * 10 for screen to worldspace conversion         }          if(Input.GetMouseButtonUp(0))         {             bDragging = false;         }