Unity实现3D模式下的摄像机视角控制

效果&＃xff1a; code&＃xff1a;

using UnityEngine;public class maxCamera : MonoBehaviour{public Transform target;public Vector3 targetOffset;private float distance &＃61; 0f;/// /// 最远距离&＃xff1a;数值越大&＃xff0c;可以呈现的效果越小/// public float maxDistance &＃61; 15;/// /// 最近距离&＃xff1a;数值越小&＃xff0c;可以呈现的效果越大/// public float minDistance &＃61; 2f;private float xSpeed &＃61; 100.0f;private float ySpeed &＃61; 100.0f;//yMinLimit&＃61;-85//yMaxLimit&＃61;85 //可以看到物体底部public int yMinLimit &＃61; 0;public int yMaxLimit &＃61; 90;public int zoomRate &＃61; 40;public float panSpeed &＃61; 0.3f;public float zoomDampening &＃61; 5.0f;private float xDeg &＃61; 0.0f;private float yDeg &＃61; 0.0f;private float currentDistance;private float desiredDistance;private Quaternion currentRotation;private Quaternion desiredRotation;private Quaternion rotation;private Vector3 position;void Start() { Init(); }void OnEnable() { Init(); }public void Init(){if (!target){GameObject go &＃61; new GameObject("Cam Target");go.transform.position &＃61; transform.position &＃43; (transform.forward * distance);target &＃61; go.transform;}distance &＃61; Vector3.Distance(transform.position, target.position);currentDistance &＃61; distance;desiredDistance &＃61; distance;position &＃61; transform.position;rotation &＃61; transform.rotation;currentRotation &＃61; transform.rotation;desiredRotation &＃61; transform.rotation;xDeg &＃61; Vector3.Angle(Vector3.right, transform.right);yDeg &＃61; Vector3.Angle(Vector3.up, transform.up);}void LateUpdate(){if (Input.GetMouseButton(1) || Input.GetMouseButton(2)){xDeg &＃43;&＃61; Input.GetAxis("Mouse X") * xSpeed * 0.02f;yDeg -&＃61; Input.GetAxis("Mouse Y") * ySpeed * 0.02f;}yDeg &＃61; ClampAngle(yDeg, yMinLimit, yMaxLimit);desiredRotation &＃61; Quaternion.Euler(yDeg, xDeg, 0);currentRotation &＃61; transform.rotation;rotation &＃61; Quaternion.Lerp(currentRotation, desiredRotation, Time.deltaTime * zoomDampening);transform.rotation &＃61; rotation;desiredDistance -&＃61; Input.GetAxis("Mouse ScrollWheel") * Time.deltaTime * zoomRate * Mathf.Abs(desiredDistance);desiredDistance &＃61; Mathf.Clamp(desiredDistance, minDistance, maxDistance);currentDistance &＃61; Mathf.Lerp(currentDistance, desiredDistance, Time.deltaTime * zoomDampening);position &＃61; target.position - (rotation * Vector3.forward * currentDistance &＃43; targetOffset);transform.position &＃61; position;}private static float ClampAngle(float angle, float min, float max){if (angle -360)angle &＃43;&＃61; 360;if (angle > 360)angle -&＃61; 360;return Mathf.Clamp(angle, min, max);}}

效果&＃xff1a; code&＃xff1a;

using UnityEngine;public class CamOperator : MonoBehaviour{public CamOperator Instance;//先确定相机围绕哪个物体进行旋转&＃xff0c;缩放&＃xff0c;平移;也就是需要确定相机的父物体//先写右键旋转&＃xff08;相机&＃xff09;,确定相机旋转的速度public Transform target;public float suoFang &＃61; 1.5f;//缩放速度 1.5public float pingYi &＃61; 0.1f; //平移速度 0.1//旋转的初始角度private float x &＃61; 0.0f;private float y &＃61; 0.0f;//相机旋转的速率public float xuanZhuan &＃61; 6.0f;//获取相机Transform对象private Transform cam;//相机距离目标物体的起始距离(距离设置为负值&＃xff0c;是因为相机是在目标物体的正后方)private float distance &＃61; -6;//相机距离的物体的最近和最远距离private float minDistance &＃61; -3.5f;private float maxDistance &＃61; -6;//初始位置private float camPostion_x &＃61; 0;private float camPostion_y &＃61; 0;void Awake(){Instance &＃61; this;Screen.fullScreen &＃61; true;transform.position &＃61; target.position;transform.rotation &＃61; Quaternion.Euler(y, x, 0);cam &＃61; transform.FindChild("Main Camera");cam.localPosition &＃61; new Vector3(0, 0, distance);}void Update(){if (Input.GetMouseButton(1)){//右键按下x &＃43;&＃61; Input.GetAxis("Mouse X") * xuanZhuan * 0.5f;y -&＃61; Input.GetAxis("Mouse Y") * xuanZhuan * 0.5f;x &＃61; ClampAngle(x, -100, 100);y &＃61; ClampAngle(y, -10, 70);var rotation &＃61; Quaternion.Euler(y, x, 0);transform.rotation &＃61; rotation;}else if (Input.GetAxis("Mouse ScrollWheel") !&＃61; 0){//中键滚动缩放distance &＃43;&＃61; Input.GetAxis("Mouse ScrollWheel") * suoFang;distance &＃61; Mathf.Clamp(distance, maxDistance, minDistance);cam.localPosition &＃61; new Vector3(camPostion_x, camPostion_y, distance);}//中键按下平移if (Input.GetMouseButton(2)){camPostion_x -&＃61; Input.GetAxis("Mouse X") * pingYi;camPostion_y -&＃61; Input.GetAxis("Mouse Y") * pingYi;cam.localPosition &＃61; new Vector3(camPostion_x, camPostion_y, distance);}}static float ClampAngle(float angle, float minAngle, float maxAngle){if (angle -360)angle &＃43;&＃61; 360;if (angle > 360)angle -&＃61; 360;return Mathf.Clamp(angle, minAngle, maxAngle);}}

使用方法&＃xff1a; 1&＃xff0c;新建一个空物体&＃xff0c;将摄像机设置为这个空物体的子层级&＃xff0c;Transform位置均设置为原点。 2&＃xff0c;指定目标物体

&＃xff08;不推荐&＃xff1a;缩放旋转无阻尼效果&＃xff0c;交互体验不如方法1&＃xff0c;而且平移功能基本不会用到&＃xff09;