[3D] 카메라 이동 및 회전(zoom in, out)

Mouse ScrollWheel조작으로 zoom in, out 기능

 

* Mathf.Clamp

public static float Clamp(float value, float min, float max);

최대/최소값 사이의 float 값이 value 범위 외의 값이 되지 않도록 함

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void Update()
    {
       transform.position = new Vector3(Mathf.Clamp(Time.time, 1.0F, 3.0F), 0, 0);
    }
}

public static int Clamp(int value, int min, int max);

// Clamps the value 10 to be between 1 and 3.
// prints 3 to the console

Debug.Log(Mathf.Clamp(10, 1, 3));

 

 

 

* Quaternion.Euler

public static Quaternion Euler(float x, float y, float z);

z축 주위로 z, x축 주위로 x, y축 주위로 y 각도만큼 회전한(순서대로) Rotation을 반환

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

public class ExampleClass : MonoBehaviour
{
    public Quaternion rotation = Quaternion.Euler(0, 30, 0);
}

public static Quaternion Euler(Vector3 euler);

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

public class ExampleClass : MonoBehaviour
{
    public Quaternion rotation = Quaternion.Euler(new Vector3(0, 30, 0));
}

 

* Transform.eulerAngles

public Vector3 eulerAngles;

각도단위 Euler 각도의 회전값을 나타냄

 

 

[Main Script]

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

public class CameraControll : MonoBehaviour
{
    [SerializeField] private Transform cameraRig;
    [SerializeField] private Transform myCamera;
    [SerializeField] private float CamMoveSpeed;
    [SerializeField] private float zoomSpeed;
    [SerializeField] private float zoomMax;
    [SerializeField] private float zoomMin;
    
    void Update()
    {
        if(Input.GetMouseButton(1))
        {
            LookAround();
        }
        CameraZoom();
    }
    
    void LookAround()
    {
        Vector2 mouseDelta = new Vector2(Input.GetAxis("Mouse X"), Input.GetAxis("Mouse Y"));
        Vector3 camAngle = cameraRig.rotation.eulerAngles;
        float x = camAngle.x - mouseDelta.y;
        if(x < 180f)
        {
            x = Mathf.Clamp(x, -1f, 70f);
        }
        else
        {
            x = 0;
        }
        cameraRig.rotation = Quaternion.Euler(x, camAngle.y + mouseDelta.x * CamMoveSpeed, camAngle.z);
    }
    
    void CameraZoom()
    {
        float zoomDirection = Input.GetAxis("Mouse ScrollWheel");

        if (myCamera.position.z >= zoomMax && zoomDirection > 0) return;
        else if (myCamera.position.z <= zoomMin && zoomDirection < 0) return;
        myCamera.position += myCamera.forward * zoomDirection * zoomSpeed;
    }
}

 

 

참고 : https://docs.unity3d.com/kr/530/ScriptReference/index.html