unity3d---移动、缩放、旋转
目录
1.示意图
2.触屏移动与缩放+键盘移动、旋转与缩放+鼠标移动旋转与缩放
1.示意图
2.触屏移动与缩放+键盘移动、旋转与缩放+鼠标移动旋转与缩放
using UnityEngine;
public class CameraMove : MonoBehaviour
{
enum SlideVector
{
None,
Up,
Down,
Left,
Right
};
[SerializeField] private bool executeMultipleTimes = false; //是否支持多次执行
[SerializeField] private float offsetTime = 0.1f; //判断的时间间隔
[SerializeField] private float slidingDistance = 50f; //滑动的最小距离
private Vector2 touchFirst = Vector2.zero; //手指开始按下的位置
private Vector2 touchSecond = Vector2.zero; //手指拖动的位置
private Touch m_touchLeft;
private Touch m_touchRight;
private SlideVector currentVector = SlideVector.None; //当前滑动方向
private float timer; //时间计数器
[SerializeField]
private Camera myCamera;
private float eulerX = 0;
private float eulerY = 0;
private void OnEnable()
{
eulerX = myCamera.transform.localEulerAngles.x;
eulerY = myCamera.transform.localEulerAngles.y;
}
void Update()
{
#if (UNITY_ANDROID || UNITY_IPHONE) && !UNITY_EDITOR
HandleTouchInput();
#else
HandleMouseInput();
#endif
}
//触屏
void HandleTouchInput()
{
if (Input.touchCount == 1)
{
Touch touch = Input.GetTouch(0);
if (touch.phase == TouchPhase.Began)
{
touchFirst = touch.position;
}
else if (touch.phase == TouchPhase.Moved)
{
touchSecond = touch.position;
MoveCamera(true);
}
}
else if (Input.touchCount == 2)
{
//判断左右触屏点
if (Input.touches[0].position.x > Input.touches[1].position.x)
{
m_touchLeft = Input.touches[1];
m_touchRight = Input.touches[0];
}
else
{
m_touchLeft = Input.touches[0];
m_touchRight = Input.touches[1];
}
if (m_touchLeft.phase == TouchPhase.Moved && m_touchRight.phase == TouchPhase.Moved)
{
int num = IsEnlarge(m_touchLeft.position, m_touchRight.position);
switch (num)
{
case 1:
//Debug.LogError("放大");
ScaleCamera(true);
break;
case -1:
//Debug.LogError("缩小");
ScaleCamera(false);
break;
}
}
}
}
private float speed => Time.deltaTime * 10;
//鼠标
void HandleMouseInput()
{
if (Input.GetMouseButtonDown(0) || Input.GetMouseButtonDown(1))
{
touchFirst = Input.mousePosition;
}
//移动
if (Input.GetMouseButton(0))
{
touchSecond = Input.mousePosition;
timer += Time.deltaTime;
if (timer > offsetTime)
{
touchSecond = Input.mousePosition;
timer = 0;
touchFirst = touchSecond;
}
MoveCamera(false);
}//旋转
else if (Input.GetMouseButton(1))
{
touchSecond = Input.mousePosition;
timer += Time.deltaTime;
if (timer > offsetTime)
{
touchSecond = Input.mousePosition;
Vector2 slideDirection = touchFirst - touchSecond;
float x = slideDirection.x;
float y = slideDirection.y;
if (y + slidingDistance < x && y > -x - slidingDistance)
{
//Debug.Log("left");
currentVector = SlideVector.Left;
}
else if (y > x + slidingDistance && y < -x - slidingDistance)
{
//Debug.Log("right");
currentVector = SlideVector.Right;
}
else if (y > x + slidingDistance && y - slidingDistance > -x)
{
//Debug.Log("up");
currentVector = SlideVector.Up;
}
else if (y + slidingDistance < x && y < -x - slidingDistance)
{
//Debug.Log("Down");
currentVector = SlideVector.Down;
}
timer = 0;
touchFirst = touchSecond;
}
RotateCamera(currentVector);
}
else
{
//滚轮缩放 与 键盘移动、旋转
if (Input.mouseScrollDelta.y > 0)
{
ScaleCamera(true);
}
else if (Input.mouseScrollDelta.y < 0)
{
ScaleCamera(false);
}
//键盘ADWS移动与上下左右键旋转
if (Input.GetKey(KeyCode.A))
{
minPos_x = GetMoveX(false);
maxPos_x = GetMoveX(true);
myCamera.transform.position = new Vector3(Mathf.Clamp(myCamera.transform.position.x - speed, minPos_x, maxPos_x), Mathf.Clamp(myCamera.transform.position.y, minPos_y, maxPos_y), -100);
}
else if (Input.GetKey(KeyCode.D))
{
minPos_x = GetMoveX(false);
maxPos_x = GetMoveX(true);
myCamera.transform.position = new Vector3(Mathf.Clamp(myCamera.transform.position.x + speed, minPos_x, maxPos_x), Mathf.Clamp(myCamera.transform.position.y, minPos_y, maxPos_y), -100);
}
else if (Input.GetKey(KeyCode.W))
{
myCamera.transform.position = new Vector3(Mathf.Clamp(myCamera.transform.position.x, minPos_x, maxPos_x), Mathf.Clamp(myCamera.transform.position.y + speed, minPos_y, maxPos_y), -100);
}
else if (Input.GetKey(KeyCode.S))
{
myCamera.transform.position = new Vector3(Mathf.Clamp(myCamera.transform.position.x, minPos_x, maxPos_x), Mathf.Clamp(myCamera.transform.position.y - speed, minPos_y, maxPos_y), -100);
}
else if (Input.GetKey(KeyCode.UpArrow))
{
RotateCamera(SlideVector.Up);
}
else if (Input.GetKey(KeyCode.DownArrow))
{
RotateCamera(SlideVector.Down);
}
else if (Input.GetKey(KeyCode.LeftArrow))
{
RotateCamera(SlideVector.Left);
}
else if (Input.GetKey(KeyCode.RightArrow))
{
RotateCamera(SlideVector.Right);
}
}
}
private Vector2 offset = Vector2.zero;
///
/// 移动相机
///
///
private void MoveCamera(bool isPhone)
{
if (isPhone)
{
offset = ((myCamera.ScreenToWorldPoint(new Vector3(touchSecond.x, touchSecond.y, myCamera.nearClipPlane)) - myCamera.ScreenToWorldPoint(new Vector3(touchFirst.x, touchFirst.y, myCamera.nearClipPlane))));
}
else
{
offset = ((myCamera.ScreenToWorldPoint(new Vector3(touchSecond.x, touchSecond.y, myCamera.nearClipPlane)) - myCamera.ScreenToWorldPoint(new Vector3(touchFirst.x, touchFirst.y, myCamera.nearClipPlane)))) / 20f;
}
//Debug.LogError("offset:" + offset.ToString());
Vector2 newPos = new Vector3(myCamera.transform.position.x + offset.x, myCamera.transform.position.y + offset.y);
newPos.x = Mathf.Clamp(newPos.x, GetMoveX(false), GetMoveX(true));
newPos.y = Mathf.Clamp(newPos.y, minPos_y, maxPos_y);
myCamera.transform.position = new Vector3(newPos.x, newPos.y, -100);
}
///
/// 鼠标旋转相机
///
private void RotateCamera(SlideVector cur)
{
switch (cur)
{
case SlideVector.Left:
minRot_y = GetRotationY(false);
maxRot_y = GetRotationY(true);
eulerY = Mathf.Clamp(eulerY - speed, minRot_y, maxRot_y);
myCamera.transform.localRotation = Quaternion.Euler(eulerX, eulerY, 0);
break;
case SlideVector.Right:
minRot_y = GetRotationY(false);
maxRot_y = GetRotationY(true);
eulerY = Mathf.Clamp(eulerY + speed, minRot_y, maxRot_y);
myCamera.transform.localRotation = Quaternion.Euler(eulerX, eulerY, 0);
break;
case SlideVector.Up:
minRot_x = GetRotationX(false);
maxRot_x = GetRotationX(true);
eulerX = Mathf.Clamp(eulerX + speed, minRot_x, maxRot_x);
myCamera.transform.localRotation = Quaternion.Euler(eulerX, eulerY, 0);
break;
case SlideVector.Down:
minRot_x = GetRotationX(false);
maxRot_x = GetRotationX(true);
eulerX = Mathf.Clamp(eulerX - speed, minRot_x, maxRot_x);
myCamera.transform.localRotation = Quaternion.Euler(eulerX, eulerY, 0);
break;
}
}
///
/// 缩放相机 true放大
///
public void ScaleCamera(bool isBig)
{
if (isBig)
{
if (myCamera.orthographicSize > minSize && myCamera.orthographicSize <= maxSize)
{
myCamera.orthographicSize -= 1;
}
}
else
{
if (myCamera.orthographicSize >= minSize && myCamera.orthographicSize < maxSize)
{
myCamera.orthographicSize += 1;
}
}
}
//用于判断是否放大
float m_leng0 = 0;
private int IsEnlarge(Vector2 P1, Vector2 P2)
{
float leng1 = Vector2.Distance(P1, P2);
if (m_leng0 == 0)
{
m_leng0 = leng1;
}
if (m_leng0 < leng1)
{
//放大手势
m_leng0 = leng1;
return 1;
}
else if (m_leng0 > leng1)
{
//缩小手势
m_leng0 = leng1;
return -1;
}
else
{
m_leng0 = leng1;
return 0;
}
}
#region------------------摄像机左右移动、左右上下旋转限制范围------------------------------------------
//移动范围
private float minPos_x = -60;
private float maxPos_x = 60;
private float minPos_y = -25;
private float maxPos_y = 50;
//旋转范围
private float minRot_x = -30;
private float maxRot_x = 15;
private float minRot_y = -30;
private float maxRot_y = 30;
//size 大小
private float minSize = 30;
private float midSize = 46;
private float maxSize = 144;
///
/// 根据rotation的Y 获取摄像机移动的x范围
///
private float GetMoveX(bool isMax)
{
float num = 0;
if (isMax)
{
if (myCamera.transform.localEulerAngles.y > 0 && myCamera.transform.localEulerAngles.y < 180)
{
num = 60 - myCamera.transform.localEulerAngles.y * 2;
}
else if (myCamera.transform.localEulerAngles.y > 180)
{
num = 60 - (myCamera.transform.localEulerAngles.y - 360) * 1.5f;
}
else
{
num = 60;
}
}
else
{
if (myCamera.transform.localEulerAngles.y > 0 && myCamera.transform.localEulerAngles.y <= 10)
{
num = -60 - myCamera.transform.localEulerAngles.y;
}
else if (myCamera.transform.localEulerAngles.y > 10 && myCamera.transform.localEulerAngles.y < 180)
{
num = -70 - (myCamera.transform.localEulerAngles.y - 10) * 2;
}
else if (myCamera.transform.localEulerAngles.y > 180)
{
num = -60 - (myCamera.transform.localEulerAngles.y - 360) * 2;
}
else
{
num = -60;
}
}
return num;
}
///
/// 获取x轴旋转范围
///
private float GetRotationX(bool isMax)
{
float num = 0;
if (isMax)
{
if (myCamera.transform.position.y > 0 && myCamera.transform.position.y <= 10)
{
num = 15 + myCamera.transform.position.y;
}
else if (myCamera.transform.position.y > 10)
{
num = 25 + (myCamera.transform.position.y / 2);
}
else if (myCamera.transform.position.y < 0)
{
num = 15 - (myCamera.transform.position.y / 2);
}
else
{
num = 15;
}
}
else
{
if (myCamera.transform.position.y == 0)
{
num = -30;
}
else
{
num = -30 + (myCamera.transform.position.y / 2);
}
}
return num;
}
///
/// 获取y轴旋转范围
///
private float GetRotationY(bool isMax)
{
float num = 0;
if (isMax)
{
if (myCamera.transform.position.x > 0)
{
num = 30 - (myCamera.transform.position.x / 2);
}
else if (myCamera.transform.position.x < 0)
{
num = 30 - (myCamera.transform.position.x / 2);
}
else
{
num = 30;
}
}
else
{
if (myCamera.transform.position.x > 0)
{
num = -30 - (myCamera.transform.position.x / 2);
}
else if (myCamera.transform.position.x < 0)
{
num = -30 - (myCamera.transform.position.x / 2);
}
else
{
num = -30;
}
}
return num;
}
#endregion
}