feat: 双Pass膨胀描边shader替代LineRenderer

- 新增 Custom/OutlineUnlit shader: Pass1膨胀描边(Cull Front)+Pass2内芯填充
- BlueOutline.mat: 蓝色描边+半透蓝填充
- TouchPositionHandler改用MeshRenderer.enabled闪烁
- 球体挂MeshRenderer+Outline材质，0.4s闪烁

Assets/Materials/BlueOutline.mat

@@ -0,0 +1,32 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 8
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: BlueOutline
+  m_Shader: {fileID: 4800000, guid: 8f9df7221aff6471e9c94f9880c6b198, type: 3}
+  m_Parent: {fileID: 0}
+  m_ModifiedSerializedProperties: 0
+  m_ValidKeywords: []
+  m_InvalidKeywords: []
+  m_LightmapFlags: 4
+  m_EnableInstancingVariants: 0
+  m_DoubleSidedGI: 0
+  m_CustomRenderQueue: -1
+  stringTagMap: {}
+  disabledShaderPasses: []
+  m_LockedProperties: 
+  m_SavedProperties:
+    serializedVersion: 3
+    m_TexEnvs: []
+    m_Ints: []
+    m_Floats:
+    - _OutlineWidth: 0.08
+    m_Colors:
+    - _MainColor: {r: 0.09999997, g: 0.29999998, b: 0.8, a: 0.3}
+    - _OutlineColor: {r: 0.19999996, g: 0.5, b: 1, a: 1}
+  m_BuildTextureStacks: []

Assets/Materials/BlueOutline.mat.meta

@@ -0,0 +1,8 @@
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+guid: ffca8dfc24bad4047b97aff00ba3497c
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 2100000
+  userData: 
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+  assetBundleVariant: 

Assets/Scenes/main.unity

@@ -1210,7 +1210,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!4 &30774413
 Transform:
   m_ObjectHideFlags: 0

Assets/Scripts/Interaction/TouchPositionHandler.cs

@@ -1,8 +1,8 @@
 using UnityEngine;
 
 /// <summary>
-/// 挂在 touchArray 的每个子球体上，点击时把 woman 移动到 womanPointArray 对应位置。
-/// 两个交叉圆环形成球形轮廓闪烁提示。
+/// 挂在 touchArray 子球体上。球体用双Pass膨胀描边shader（Custom/OutlineUnlit），
+/// 闪烁提示用户点击。点击后移动到对应位置并顺序显示下一个。
 /// </summary>
 public class TouchPositionHandler : MonoBehaviour
 {
@@ -10,73 +10,20 @@ public class TouchPositionHandler : MonoBehaviour
     public GameObject womanObject;
     public GameObject nextTouchObject;
 
-    private LineRenderer _ringH; // 水平环
-    private LineRenderer _ringV; // 垂直环
+    private MeshRenderer _meshRenderer;
 
     private void Start()
     {
-        var mr = GetComponent<MeshRenderer>();
-        if (mr != null) mr.enabled = false;
-
-        CreateCrossRings();
-        StartCoroutine(BlinkRings());
+        _meshRenderer = GetComponent<MeshRenderer>();
+        StartCoroutine(BlinkMesh());
     }
 
-    private void CreateCrossRings()
-    {
-        float r = 0.15f;
-        int segs = 32;
-        float yOff = 0.05f;
-        Color blue = new Color(0.2f, 0.5f, 1f);
-
-        // 水平环 —— 世界空间 XZ 平面
-        var hGo = new GameObject("RingH");
-        hGo.transform.SetParent(transform, false);
-        _ringH = hGo.AddComponent<LineRenderer>();
-        SetupRing(_ringH, blue);
-        _ringH.useWorldSpace = true;
-        _ringH.positionCount = segs;
-        Vector3 center = transform.position + Vector3.up * yOff;
-        for (int i = 0; i < segs; i++)
-        {
-            float a = i * 2f * Mathf.PI / segs;
-            _ringH.SetPosition(i, center + new Vector3(Mathf.Cos(a) * r, 0, Mathf.Sin(a) * r));
-        }
-
-        // 垂直环 —— 世界空间 XY 平面（竖起来）
-        var vGo = new GameObject("RingV");
-        vGo.transform.SetParent(transform, false);
-        _ringV = vGo.AddComponent<LineRenderer>();
-        SetupRing(_ringV, blue);
-        _ringV.useWorldSpace = true;
-        _ringV.positionCount = segs;
-        for (int i = 0; i < segs; i++)
-        {
-            float a = i * 2f * Mathf.PI / segs;
-            _ringV.SetPosition(i, center + new Vector3(Mathf.Cos(a) * r, Mathf.Sin(a) * r, 0));
-        }
-
-        Debug.Log($"[TouchPosition] {name}: 交叉蓝环已创建 (r={r})");
-    }
-
-    private void SetupRing(LineRenderer lr, Color c)
-    {
-        lr.loop = true;
-        lr.startWidth = 0.06f;
-        lr.endWidth = 0.06f;
-        lr.material = new Material(Shader.Find("Unlit/Color"));
-        lr.material.color = c;
-        lr.startColor = c;
-        lr.endColor = c;
-    }
-
-    private System.Collections.IEnumerator BlinkRings()
+    private System.Collections.IEnumerator BlinkMesh()
     {
         while (true)
         {
-            bool on = !_ringH.enabled;
-            if (_ringH != null) _ringH.enabled = on;
-            if (_ringV != null) _ringV.enabled = on;
+            if (_meshRenderer != null)
+                _meshRenderer.enabled = !_meshRenderer.enabled;
             yield return new WaitForSeconds(0.4f);
         }
     }
@@ -91,14 +38,9 @@ public class TouchPositionHandler : MonoBehaviour
             womanObject.transform.rotation = targetPosition.rotation;
             Debug.Log($"[TouchPosition] woman 移动到 {targetPosition.name}");
         }
-        else
-        {
-            Debug.LogWarning($"[TouchPosition] {name}: 引用为空");
-        }
 
         StopAllCoroutines();
-        if (_ringH != null) _ringH.enabled = false;
-        if (_ringV != null) _ringV.enabled = false;
+        if (_meshRenderer != null) _meshRenderer.enabled = false;
 
         gameObject.SetActive(false);
         if (nextTouchObject != null)

Assets/Shaders.meta

@@ -0,0 +1,8 @@
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+guid: 3341ac3659c134c929e8f36c5268188d
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Shaders/OutlineUnlit.shader

@@ -0,0 +1,64 @@
+Shader "Custom/OutlineUnlit"
+{
+    Properties
+    {
+        _MainColor ("Main Color", Color) = (0.1, 0.3, 0.8, 0.3)
+        _OutlineColor ("Outline Color", Color) = (0.2, 0.5, 1, 1)
+        _OutlineWidth ("Outline Width", Range(0, 0.3)) = 0.08
+    }
+    SubShader
+    {
+        Tags { "RenderType"="Transparent" "Queue"="Transparent" }
+        Blend SrcAlpha OneMinusSrcAlpha
+        ZWrite Off
+
+        // Pass 1: 膨胀描边
+        Pass
+        {
+            Name "OUTLINE"
+            Cull Front
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #include "UnityCG.cginc"
+
+            float _OutlineWidth;
+            float4 _OutlineColor;
+
+            struct appdata { float4 vertex : POSITION; float3 normal : NORMAL; };
+            struct v2f { float4 pos : SV_POSITION; };
+
+            v2f vert(appdata v)
+            {
+                v2f o;
+                float3 n = normalize(v.normal);
+                v.vertex.xyz += n * _OutlineWidth;
+                o.pos = UnityObjectToClipPos(v.vertex);
+                return o;
+            }
+
+            fixed4 frag(v2f i) : SV_Target { return _OutlineColor; }
+            ENDCG
+        }
+
+        // Pass 2: 内芯填充
+        Pass
+        {
+            Name "FILL"
+            Cull Back
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #include "UnityCG.cginc"
+
+            float4 _MainColor;
+
+            struct appdata { float4 vertex : POSITION; };
+            struct v2f { float4 pos : SV_POSITION; };
+
+            v2f vert(appdata v) { v2f o; o.pos = UnityObjectToClipPos(v.vertex); return o; }
+            fixed4 frag(v2f i) : SV_Target { return _MainColor; }
+            ENDCG
+        }
+    }
+}

Assets/Shaders/OutlineUnlit.shader.meta

@@ -0,0 +1,9 @@
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+guid: 8f9df7221aff6471e9c94f9880c6b198
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