/// <summary>
/// Creates an array of Sub Division Mesh from the .Obj file given by the user.
/// Each Group within the .Obj file is represented by one SubDivsion Mesh.
/// </summary>
/// <param name="filePath">The file to be imported</param>
/// <returns></returns>
public static DSSubDivisionMesh[] ImportFromOBJ(string filePath)
{
if (string.IsNullOrWhiteSpace(filePath))
{
throw new System.ArgumentNullException("filePath");
}
filePath = DSGeometryExtension.LocateFile(filePath);
if (!File.Exists(filePath))
{
throw new System.ArgumentException(string.Format(Properties.Resources.FileNotFound, filePath), "filePath");
}
DSMeshData result = ObjHandler.Import(filePath);
return(result.ConvertToSubDivisionMesh());
}
/// <summary>
/// Exports the SubDivision meshes provided by the user to an .Obj file. Each Subvision Mesh
/// is represented by a group. Groups are automatically named.
/// </summary>
/// <param name="mesh">The SubDivision Mesh array to be exported in one file</param>
/// <param name="filePath">The meshes are exported to this file Path, or the active directory if only file name is provided</param>
/// <returns></returns>
public static bool ExportToOBJ(DSSubDivisionMesh[] mesh, string filePath)
{
if (mesh == null || mesh.Length == 0)
{
throw new System.ArgumentNullException("mesh");
}
if (string.IsNullOrWhiteSpace(filePath))
{
throw new System.ArgumentNullException("filePath");
}
DSMeshData meshData = new DSMeshData();
for (int i = 0; i < mesh.Length; ++i)
{
meshData.AddGroup("Group_" + i);
foreach (var vertices in mesh[i].FaceIndices)
{
for (int j = 0; j < vertices.Length; ++j)
{
vertices[j] += meshData.Vertices.Count + 1;
}
meshData.Groups[i].AddFace(vertices);
}
meshData.Vertices.AddRange(mesh[i].Vertices);
}
if (!filePath.EndsWith(".obj"))
{
filePath += ".obj";
}
if (!Path.IsPathRooted(filePath))
{
string foldername = Path.GetDirectoryName(DSGeometrySettings.RootModulePath);
filePath = Path.Combine(foldername, filePath);
}
return(ObjHandler.Export(meshData, filePath));
}