Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
I have been working on a Camera Controller for Unity that can be used for large area scenes. The code is not entirely mine but I believe it is worth sharing since I couldn't find something similar that easily.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
/*
* In order for the code below to work without error you have to:
* 1. Add the script to the Main Camera
* 2. In Inspector change the Main Camera tag to MainCamera
* 3. In Hierarchy create UI element EventSystem
*/
public class CameraController : MonoBehaviour
{
//Pan
private float sensitivityX;
private float sensitivityY;
public Vector3 MousePosV3;
//Zoom
public int distanceMin = -100;
public int distanceMax = 500;
public float zoomSpeed = 50f;
private Vector3 moveDirection = Vector3.zero;
// Orbit
public float minY = -45.0f;
public float maxY = 45.0f;
public float OrbitsensX = 100.0f;
public float OrbitsensY = 100.0f;
float rotationY = 0.0f;
float rotationX = 0.0f;
// Check Mouse on UI Layer
static public bool checkMouseOnUI;
private Vector3 currentMainCameraPos;
private Quaternion currentMainCameraRot;
public bool isOnable = true;
readonly bool isPan = true;
readonly bool isOrbit = true;
readonly bool isZoom = true;
public bool rockTarget = false;
#region
public virtual void IsEnable(bool b)
{
isOnable = b;
}
#endregion
private void Start()
{
rotationY = -transform.localEulerAngles.x;
rotationX = transform.localEulerAngles.y;
currentMainCameraPos = transform.position;
currentMainCameraRot = Quaternion.Euler(transform.eulerAngles);
}
private void OnEnable()
{
RaycastHit hits;
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if (Physics.Raycast(ray, out hits, 10000))
{
MousePosV3 = new Vector3(hits.point.x, hits.point.y, hits.point.z);
}
}
private void Update()
{
if (!isOnable)
{
if (Input.GetMouseButton(0))
{
isOnable = true;
}
return;
}
if (isOnable)
{
if (checkMouseOnUI == false)
{
if (EventSystem.current.IsPointerOverGameObject())
{
return;
}
// Pan Start
if (isPan)
{
if (Input.GetMouseButtonDown(0))
{
RaycastHit hits;
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if (!rockTarget)
{
if (Physics.Raycast(ray, out hits, 10000))
{
MousePosV3 = new Vector3(hits.point.x, hits.point.y, hits.point.z);
}
}
float distance = Vector3.Distance(MousePosV3, transform.position);
sensitivityX = distance * 0.02f;
sensitivityY = distance * 0.02f;
}
float deltaX = Input.GetAxis("Mouse X") * sensitivityX;
float deltaY = Input.GetAxis("Mouse Y") * sensitivityY;
if (Input.GetMouseButton(0))
{
transform.position += deltaX * transform.right * -1;
transform.position += deltaY * transform.up * -1;
}
}
// Pan end
//Zoom Start
if (isZoom)
{
moveDirection = new Vector3(0, 0, Input.GetAxis("Mouse ScrollWheel") * zoomSpeed);
if (!Input.GetKey(KeyCode.LeftShift))
{
if (Input.GetAxis("Mouse ScrollWheel") > 0)
{
if (Mathf.Floor(transform.position.y + moveDirection.y) > distanceMin)
{
transform.Translate(moveDirection, Space.Self);
}
}
else if (Input.GetAxis("Mouse ScrollWheel") < 0)
{
// We shouldn't be allowed to zoom out more than distanceMax
if (Mathf.Floor(transform.position.y + moveDirection.y) < distanceMax)
{
transform.Translate(moveDirection, Space.Self);
}
}
}
}
// Zoom End
// Orbit Start
if (isOrbit)
{
if (Input.GetMouseButton(2))
{
transform.RotateAround(MousePosV3, Vector3.up, Input.GetAxis("Mouse X") * 2);
transform.RotateAround(MousePosV3, transform.right * -1, Input.GetAxis("Mouse Y") * 2);
}
}
//Orbit End
}
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment