public static void ExportMesh(Mesh mesh, string path, bool switchUv = false, bool mirror = true, int fbxVersion = 1)
{
FBXExporter.Initialize(mesh.name);
FBXExporter.SetFBXCompatibility(fbxVersion);
FBXExporter.AddMesh(mesh.name);
Vector3[] vertices = mesh.vertices;
Vector3[] normals = mesh.normals;
int[] triangles = mesh.triangles;
FbxVector3[] nvertices = new FbxVector3[vertices.Length];
if (mirror)
{
for (int i = 0; i < vertices.Length; i++)
{
Vector3 v = vertices[i];
nvertices[i] = new FbxVector3(-v.x, v.y, v.z);
}
// change triangles order
for (int i = 0; i < triangles.Length - 2; i += 3)
{
int i0 = triangles[i];
int i1 = triangles[i + 1];
int i2 = triangles[i + 2];
triangles[i] = i2;
triangles[i + 1] = i1;
triangles[i + 2] = i0;
}
}
else
{
for (int i = 0; i < vertices.Length; i++)
{
Vector3 v = vertices[i];
nvertices[i] = new FbxVector3(v.x, v.y, v.z);
}
}
FbxVector3[] nnormals = new FbxVector3[triangles.Length];
for (int i = 0; i < triangles.Length; i++)
{
Vector3 v = normals[triangles[i]];
nnormals[i] = new FbxVector3(v.x, v.y, v.z);
}
FBXExporter.AddMaterial(new FbxVector3(0.7, 0.7, 0.7));
FBXExporter.AddIndices(triangles, triangles.Length, 0);
FBXExporter.AddVertices(nvertices, nvertices.Length);
FBXExporter.AddNormals(nnormals, nnormals.Length);
if (switchUv)
{
List <Vector2> tverts = new List <Vector2>();
mesh.GetUVs(1, tverts);
if (tverts.Count != 0)
{
FbxVector2[] uv = new FbxVector2[triangles.Length];
for (int j = 0; j < triangles.Length; j++)
{
Vector2 v = tverts[triangles[j]];
uv[j] = new FbxVector2(v.x, v.y);
}
FBXExporter.AddTexCoords(uv, uv.Length, 0, "UV0");
}
}
else
{
for (int i = 0; i < 4; i++)
{
List <Vector2> tverts = new List <Vector2>();
mesh.GetUVs(i, tverts);
if (tverts.Count == 0)
{
if (LightmappingEnabled && i == 1)
{
Debug.LogError("Lightmapping is enabled but mesh has no UV1 channel - " + mesh, mesh);
}
continue;
}
FbxVector2[] uv = new FbxVector2[triangles.Length];
for (int j = 0; j < triangles.Length; j++)
{
Vector2 v = tverts[triangles[j]];
uv[j] = new FbxVector2(v.x, v.y);
}
FBXExporter.AddTexCoords(uv, uv.Length, i, "UV" + i);
}
}
FBXExporter.Export(path);
}
public extern static void AddMaterial(FbxVector3 DiffuseColor);
