88 lines
3.1 KiB
C#
88 lines
3.1 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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public class MultiSubCanvasClickHandler : MonoBehaviour
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{
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public static MultiSubCanvasClickHandler Instance;
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public Camera targetCamera; // 目标相机，用于发射射线
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public RawImage rawImage; // 需要判断点击位置的 RawImage
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public float maxRaycastDistance = 100f; // 射线最大检测距离
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public bool IsUse=false;
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private void Awake()
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{
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Instance = this;
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}
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void Update()
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{
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if(IsUse)
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{
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// 检测鼠标左键按下事件
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if (Input.GetMouseButtonDown(0))
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{
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// 获取鼠标点击位置
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Vector2 mousePosition = Input.mousePosition;
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// 将鼠标点击位置转换为 RawImage 的局部坐标
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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rawImage.rectTransform,
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mousePosition,
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null,
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out Vector2 localPoint//返回的局部坐标
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);
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// 将局部坐标转换为归一化坐标,通过RawImage的长宽比
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Rect rect = rawImage.rectTransform.rect;
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float normalizedX = (localPoint.x - rect.x) / rect.width;
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float normalizedY = (localPoint.y - rect.y) / rect.height;
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// 打印归一化坐标
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//Debug.Log($"Click Position: ({normalizedX}, {normalizedY})");
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// 判断点击位置是否在 RawImage 范围内
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if (normalizedX >= 0 && normalizedX <= 1 && normalizedY >= 0 && normalizedY <= 1)
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{
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//Debug.Log("Click is within RawImage bounds.");
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// 将归一化坐标转换为目标相机画面的屏幕坐标
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Vector3 screenPoint = new Vector3(
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normalizedX * targetCamera.pixelWidth,
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normalizedY * targetCamera.pixelHeight,
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targetCamera.nearClipPlane
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);
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// 从目标相机发射射线
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Ray ray = targetCamera.ScreenPointToRay(screenPoint);
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RaycastHit hit;
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// 绘制射线，无论是否击中物体
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if (Physics.Raycast(ray, out hit, maxRaycastDistance))
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{
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// 如果射线打中了某个物体
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//Debug.Log("Hit: " + hit.transform.gameObject.name);
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GuoLuHowMsgs.Instance.ShowCoreMsg(hit.transform.gameObject.name);
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// 绘制射线到击中点
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//Debug.DrawRay(ray.origin, ray.direction * hit.distance, Color.red, 5);
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}
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else
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{
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// 如果射线没有击中任何物体，绘制射线到最大距离
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//Debug.Log("Hit: Nothing");
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//GuoLuHowMsgs.Instance.ShowCoreMsg("Nothing");
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// 绘制射线到最大距离
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//Debug.DrawRay(ray.origin, ray.direction * maxRaycastDistance, Color.red, 5);
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}
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}
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}
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}
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}
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}
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