64 lines
2.0 KiB
C#
64 lines
2.0 KiB
C#
using UnityEngine;
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using UnityEditor;
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using System.Collections.Generic;
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public class MeshCombineTool : MonoBehaviour
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{
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[MenuItem("Tools/Mesh/Combine Selected Meshes")]
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static void CombineMeshes()
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{
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GameObject[] selectedObjects = Selection.gameObjects;
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if (selectedObjects.Length == 0)
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{
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Debug.LogWarning("请选择至少一个带 MeshRenderer 的物体！");
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return;
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}
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// 用于合批的 MeshCombineInstance 列表
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List<CombineInstance> combineInstances = new List<CombineInstance>();
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Material sharedMaterial = null;
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foreach (GameObject obj in selectedObjects)
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{
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MeshFilter mf = obj.GetComponent<MeshFilter>();
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MeshRenderer mr = obj.GetComponent<MeshRenderer>();
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if (mf == null || mr == null)
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continue;
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if (sharedMaterial == null)
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sharedMaterial = mr.sharedMaterial;
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if (mr.sharedMaterial != sharedMaterial)
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{
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Debug.LogWarning("存在不同材质的物体，合并后只保留第一种材质！");
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}
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CombineInstance ci = new CombineInstance();
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ci.mesh = mf.sharedMesh;
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ci.transform = obj.transform.localToWorldMatrix;
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combineInstances.Add(ci);
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}
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if (combineInstances.Count == 0)
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{
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Debug.LogWarning("未找到可合并的 Mesh！");
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return;
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}
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// 创建新 Mesh
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Mesh combinedMesh = new Mesh();
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combinedMesh.CombineMeshes(combineInstances.ToArray());
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// 创建新 GameObject
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GameObject combinedObj = new GameObject("CombinedMesh");
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MeshFilter newMF = combinedObj.AddComponent<MeshFilter>();
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MeshRenderer newMR = combinedObj.AddComponent<MeshRenderer>();
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newMF.sharedMesh = combinedMesh;
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newMR.sharedMaterial = sharedMaterial;
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Debug.Log("合并完成，共合并 " + combineInstances.Count + " 个物体！");
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}
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} |