55 lines
1.7 KiB
C#
55 lines
1.7 KiB
C#
using System.IO;
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using System.Text;
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using UnityEngine;
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public class RTPObjExporter
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{
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public static string MeshToString(MeshFilter mf)
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{
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Mesh sharedMesh = mf.sharedMesh;
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Material[] sharedMaterials = mf.GetComponent<Renderer>().sharedMaterials;
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StringBuilder stringBuilder = new StringBuilder();
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stringBuilder.Append("g ").Append(mf.name).Append("\n");
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Vector3[] vertices = sharedMesh.vertices;
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for (int i = 0; i < vertices.Length; i++)
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{
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Vector3 vector = vertices[i];
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stringBuilder.Append(string.Format("v {0} {1} {2}\n", 0f - vector.x, vector.y, vector.z));
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}
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stringBuilder.Append("\n");
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Vector3[] normals = sharedMesh.normals;
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for (int j = 0; j < normals.Length; j++)
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{
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Vector3 vector2 = normals[j];
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stringBuilder.Append(string.Format("vn {0} {1} {2}\n", 0f - vector2.x, vector2.y, vector2.z));
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}
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stringBuilder.Append("\n");
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Vector2[] uv = sharedMesh.uv;
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for (int k = 0; k < uv.Length; k++)
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{
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Vector3 vector3 = uv[k];
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stringBuilder.Append(string.Format("vt {0} {1}\n", vector3.x, vector3.y));
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}
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for (int l = 0; l < sharedMesh.subMeshCount; l++)
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{
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stringBuilder.Append("\n");
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stringBuilder.Append("usemtl ").Append(sharedMaterials[l].name).Append("\n");
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stringBuilder.Append("usemap ").Append(sharedMaterials[l].name).Append("\n");
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int[] triangles = sharedMesh.GetTriangles(l);
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for (int m = 0; m < triangles.Length; m += 3)
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{
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stringBuilder.Append(string.Format("f {0}/{0}/{0} {1}/{1}/{1} {2}/{2}/{2}\n", triangles[m + 2] + 1, triangles[m + 1] + 1, triangles[m] + 1));
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}
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}
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return stringBuilder.ToString();
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}
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public static void MeshToFile(MeshFilter mf, string filename)
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{
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using (StreamWriter streamWriter = new StreamWriter(filename))
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{
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streamWriter.Write(MeshToString(mf));
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}
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}
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}
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