[Unity 3D]用鼠标滚轮实现镜头放大和缩放,并添加距离限制

时间:2024-02-25 20:32:47
 1 public class CameraMove : MonoBehaviour {
 2     private Camera c;
 3     private float mouseCenter;
 4     private int maxView = 120;
 5     private int minView = 10;
 6     private float slideSpeed = 20;
 7 
 8 
 9 
10     private void Start() {
11         //获取摄像头组件
12         c = this.GetComponent<Camera>();
13 
14     }
15 
16 
17     private void Update() {
18     
19         //获取虚拟按键(鼠标中轴滚轮)
20         float  mouseCenter = Input.GetAxis("Mouse ScrollWheel");

      //鼠标滑动中键滚轮,实现摄像机的镜头放大和缩放
//mouseCenter < 0 = 负数 往后滑动,缩放镜头
21 if (mouseCenter <0 ) {
           //滑动限制
24 if (c.fieldOfView <= maxView) { 25 c.fieldOfView += 10 * slideSpeed*Time.deltaTime; 26 if (c.fieldOfView >= maxView) { 27 c.fieldOfView = minView; 28 } 29 } 30 //mouseCenter >0 = 正数 往前滑动,放大镜头 31 } else if (mouseCenter >0 ) {
            //滑动限制
32 if (c.fieldOfView >= minView) { 33 c.fieldOfView -= 10 * slideSpeed* 34 Time.deltaTime; 35 if (c.fieldOfView <= minView) { 36 c.fieldOfView = maxView; 37 } 38 } 39 } 40 } 41 }

注意看Field of View值的变化