点击预览位置，alt——上下挪动位置

Signed-off-by: TRAfoer <lhf190@outlook.com>

Assets/Scripts/Gird/SimpleGridController.cs

@@ -1,7 +1,10 @@
+using System.Collections;
 using System.Collections.Generic;
+using DG.Tweening;
 using Ichni;
 using TMPro;
 using UnityEngine;
+using UnityEngine.InputSystem;
 
 [RequireComponent(typeof(MeshFilter), typeof(MeshRenderer))]
 public class SimpleGridController : MonoBehaviour
@@ -39,6 +42,84 @@ public class SimpleGridController : MonoBehaviour
 
     }
 
+
+
+
+
+
+
+
+
+
+    public Color MainColor = new Color(0.8f, 0.8f, 0.8f, 0.5f);
+    public Color SubColor = new Color(0.5f, 0.5f, 0.5f, 0.5f);
+    void Update()
+    {
+        if (Mouse.current.middleButton.wasPressedThisFrame)
+        {
+            StartCoroutine(Pressing());
+        }
+    }
+    GameObject coordTextObj = null;
+    IEnumerator Pressing()
+    {
+        if (coordTextObj != null)
+        {
+            coordTextObj.transform.DOComplete();
+        }
+        TextMeshPro coordText = null;
+        float targetScale = 1f;
+        Tweener scaleTween = null;
+        while (Mouse.current.middleButton.isPressed)
+        {
+            Ray ray = targetCamera.ScreenPointToRay(Mouse.current.position.ReadValue());
+            Plane plane = new Plane(Vector3.up, Vector3.zero);
+            if (plane.Raycast(ray, out float enter))
+            {
+                Vector3 hitPoint = ray.GetPoint(enter);
+                Vector2 xz = new Vector2(hitPoint.x, hitPoint.z);
+                // 创建或复用文字对象
+                if (coordTextObj == null)
+                {
+                    coordTextObj = Instantiate(textPrefab, textParent);
+                    coordText = coordTextObj.GetComponent<TextMeshPro>();
+                    coordTextObj.transform.localScale = Vector3.zero;
+                    targetScale = Mathf.Clamp(Vector3.Distance(targetCamera.transform.position, hitPoint) * 0.05f, 0.1f, 1000f);
+                    scaleTween = coordTextObj.transform.DOScale(Vector3.one * targetScale, 0.2f).SetEase(Ease.OutBack);
+                }
+                else
+                {
+                    // 动态融合：用DOTween的ChangeEndValue实时调整目标scale
+                    targetScale = Mathf.Clamp(Vector3.Distance(targetCamera.transform.position, hitPoint) * 0.05f, 0.1f, 1000f);
+                    if (scaleTween != null && scaleTween.IsActive())
+                    {
+                        scaleTween.ChangeEndValue(Vector3.one * targetScale, true);
+                    }
+                    else
+                    {
+                        coordTextObj.transform.localScale = Vector3.one * targetScale;
+                    }
+                }
+                coordTextObj.transform.position = hitPoint + Vector3.up * targetScale;
+                coordTextObj.transform.rotation = Quaternion.LookRotation(coordTextObj.transform.position - targetCamera.transform.position, Vector3.up);
+                if (coordText == null) coordText = coordTextObj.GetComponent<TextMeshPro>();
+                coordText.text = $"({xz.x:F2}, {xz.y:F2})\n({Mathf.Round(xz.x):F2}, {Mathf.Round(xz.y):F2})";
+                coordText.fontSize = 8;
+                coordText.enableWordWrapping = false;
+                coordText.color = Color.yellow;
+            }
+            yield return null;
+        }
+        // 释放文字对象
+        if (coordTextObj != null)
+        {
+            coordTextObj.transform.DOScale(0, 0.3f).SetEase(Ease.OutExpo).OnComplete(() =>
+            {
+                Destroy(coordTextObj);
+                coordTextObj = null;
+            });
+        }
+    }
     void LateUpdate()
     {
         if (!targetCamera) return;
@@ -49,28 +130,50 @@ public class SimpleGridController : MonoBehaviour
         transform.position = new Vector3(camPos.x, 0, camPos.z);
 
         // 2. 计算层级 (1m / 10m / 100m)
-        CalculateGridLevel(camPos.y);
+        float absH = Mathf.Abs(camPos.y);
+        float step = baseGridSize;
+        Color Mcolor = MainColor;
+        Color Scolor = SubColor;
+        // 简单的自适应逻辑：根据高度决定网格密度
+        if (absH > 150f)//>150
+        {
+            step *= 10f;
+            Scolor = Lerp(SubColor, Color.clear, (absH - 150f) / 150f);
+        }
+        else if (absH > 15f)//15-150
+        {
+            step *= 10f;
+            Mcolor = Lerp(MainColor, SubColor, (absH - 15f) / (150f - 15f));
+            Scolor = Lerp(SubColor, Color.clear, (absH - 15f) / (150f - 15f));
+        }
+        else//0-15
+        {
+            Mcolor = Lerp(MainColor, SubColor, absH / 15f);
+            Scolor = Lerp(SubColor, Color.clear, absH / 15f);
+        }
+
+
+        _currentSpacing = step;
 
         // 3. 更新 Shader
         if (_instancedMat)
         {
+            _instancedMat.SetColor("_MainColor", Scolor);
+            _instancedMat.SetColor("_AxisColor", Mcolor);
             _instancedMat.SetFloat("_GridSpacing", _currentSpacing);
             _instancedMat.SetFloat("_FadeDist", drawDistance);
         }
 
 
     }
-
-    private void CalculateGridLevel(float camHeight)
+    private Color Lerp(Color a, Color b, float t)
     {
-        float absH = Mathf.Abs(camHeight);
-        float step = baseGridSize;
-
-        // 简单的自适应逻辑：根据高度决定网格密度
-        if (absH > 15f) step *= 10f;
-        if (absH > 150f) step *= 10f;
-
-        _currentSpacing = step;
+        return new Color(
+            Mathf.Lerp(a.r, b.r, t),
+            Mathf.Lerp(a.g, b.g, t),
+            Mathf.Lerp(a.b, b.b, t),
+            Mathf.Lerp(a.a, b.a, t)
+        );
     }