165 lines
7.1 KiB
C#
165 lines
7.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using Module.Log;
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using UnityEditor;
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using UnityEngine;
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using UnityEngine.SceneManagement;
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using Object = UnityEngine.Object;
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public class ExtractSceneMesh
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{
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[MenuItem("Scene/Extract SceneMesh Combined")]
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public static void Extract()
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{
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if (EditorUtility.DisplayDialog("导出场景模型", "将场景的所有物体导出为合并模型？", "确认", "取消"))
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{
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var vertices = new List<Vector3>();
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var uv = new List<Vector2>();
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var normal = new List<Vector3>();
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var triangles = new List<int>();
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var meshFilters = Object.FindObjectsOfType<MeshFilter>();
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for (var i = 0; i < meshFilters.Length; i++)
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{
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var filter = meshFilters[i];
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if (!filter.gameObject.activeInHierarchy)
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{
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}
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else if (filter.sharedMesh == null)
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{
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LogModule.ErrorLog("Filter has no mesh " + filter.transform.GetHierarchyName());
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}
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else if (!filter.sharedMesh.isReadable)
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{
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LogModule.WarningLog("Mesh isn't readable " + filter.sharedMesh.name);
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}
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else
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{
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var start = vertices.Count;
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var trs = Matrix4x4.TRS(filter.transform.position, filter.transform.rotation,
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filter.transform.localScale);
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var meshVertices = filter.sharedMesh.vertices;
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var meshUv = filter.sharedMesh.uv;
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var meshNormal = filter.sharedMesh.normals;
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var subMeshCount = filter.sharedMesh.subMeshCount;
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for (var j = 0; j < meshVertices.Length; j++)
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vertices.Add(trs.MultiplyPoint3x4(meshVertices[j]));
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for (var j = 0; j < meshNormal.Length; j++)
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normal.Add(filter.transform.rotation * meshNormal[j]);
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for (var j = 0; j < meshUv.Length; j++)
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uv.Add(meshUv[j]);
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for (var k = 0; k < subMeshCount; k++)
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{
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var meshTriangle = filter.sharedMesh.GetTriangles(k);
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for (var j = 0; j < meshTriangle.Length; j++)
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triangles.Add(meshTriangle[j] + start);
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}
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}
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}
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//
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// var mesh = new Mesh();
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// mesh.SetVertices(vertices);
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// mesh.SetNormals(normal);
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// mesh.SetUVs(0, uv);
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// mesh.SetTriangles(triangles, 0);
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// LogModule.WarningLog("V Count " + vertices.Count);
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// var meshObj = new GameObject("Mesh");
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// var meshFilter = meshObj.AddComponent<MeshFilter>();
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// meshFilter.sharedMesh = mesh;
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// meshObj.AddComponent<MeshRenderer>();
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//ObjExtractHelp.DoExport(mesh);
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var sceneName = SceneManager.GetActiveScene().name;
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if (string.IsNullOrEmpty(sceneName))
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sceneName = "NewScene";
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var path = Application.dataPath + "/_Test/SceneMesh";
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if (!Directory.Exists(path))
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Directory.CreateDirectory(path);
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path += "/" + sceneName + "SceneMesh.obj";
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ObjExtract(vertices, uv, normal, triangles, path);
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AssetDatabase.Refresh();
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LogModule.WarningLog("Mesh Exported at " + path);
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}
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}
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public static void ObjExtract(IList<Vector3> vertices, IList<Vector2> uv, IList<Vector3> normal, IList<int> triangleList, string path)
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{
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var builder = new StringBuilder();
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var sceneName = Path.GetFileNameWithoutExtension(path);
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builder.Append("#" + sceneName + ".obj"
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+ "\n#" + DateTime.Now.ToLongDateString()
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+ "\n#" + DateTime.Now.ToLongTimeString()
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+ "\n#-------"
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+ "\n\n");
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builder.Append("g ").Append(sceneName).Append("\n");
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builder.Append("#").Append(sceneName).Append("\n#-------").Append("\n");
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foreach (var v in vertices)
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builder.Append(string.Format("v {0} {1} {2}\n", -v.x, v.y, v.z));
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builder.Append("\n");
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foreach (var v in normal)
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builder.Append(string.Format("vn {0} {1} {2}\n", -v.x, v.y, v.z));
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builder.Append("\n");
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foreach (var v in uv)
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builder.Append(string.Format("vt {0} {1}\n", v.x, v.y));
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builder.Append("\n");
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builder.Append("usemtl ").Append("Dummy").Append("\n");
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builder.Append("usemap ").Append("Dummy").Append("\n");
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var triangles = triangleList;
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for (var i = 0; i < triangles.Count; i += 3)
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builder.Append(string.Format("f {0}/{0}/{0} {2}/{2}/{2} {1}/{1}/{1}\n",
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triangles[i] + 1, triangles[i + 1] + 1, triangles[i + 2] + 1));
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File.WriteAllText(path, builder.ToString());
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}
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//
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// public static void MeshToString(StringBuilder builder, Mesh m)
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// {
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// foreach (var v in m.vertices)
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// builder.Append(string.Format("v {0} {1} {2}\n", -v.x, v.y, v.z));
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// builder.Append("\n");
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// foreach (var v in m.normals)
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// builder.Append(string.Format("vn {0} {1} {2}\n", -v.x, v.y, v.z));
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// builder.Append("\n");
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// foreach (var v in m.uv)
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// builder.Append(string.Format("vt {0} {1}\n", v.x, v.y));
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// builder.Append("\n");
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// builder.Append("usemtl ").Append("Dummy").Append("\n");
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// builder.Append("usemap ").Append("Dummy").Append("\n");
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// var triangles = m.triangles;
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// for (var i = 0; i < triangles.Length; i += 3)
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// builder.Append(string.Format("f {0}/{0}/{0} {1}/{1}/{1} {2}/{2}/{2}\n",
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// triangles[i] + 1, triangles[i + 1] + 1, triangles[i + 2] + 1));
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// }
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}
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//
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//public static class ObjExtractScript
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//{
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//
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//}
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//
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//public static class ObjExtractHelp
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//{
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// public static void DoExport(Mesh mesh)
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// {
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// var builder = new StringBuilder();
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// var sceneName = SceneManager.GetActiveScene().name;
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// if (string.IsNullOrEmpty(sceneName))
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// sceneName = "NewScene";
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// builder.Append("#" + sceneName + ".obj"
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// + "\n#" + DateTime.Now.ToLongDateString()
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// + "\n#" + DateTime.Now.ToLongTimeString()
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// + "\n#-------"
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// + "\n\n");
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// builder.Append("g ").Append(sceneName).Append("\n");
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// builder.Append("#").Append(sceneName).Append("\n#-------").Append("\n");
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// ObjExtractScript.MeshToString(builder, mesh);
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// var path = Application.dataPath + "/_Test/SceneMesh";
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// if (!Directory.Exists(path))
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// Directory.CreateDirectory(path);
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// path += "/" + sceneName + "SceneMesh.obj";
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// File.WriteAllText(path, builder.ToString());
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// AssetDatabase.Refresh();
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// LogModule.WarningLog("Mesh Exported at " + path);
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// }
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//} |