/// <summary>
/// Create the obj and mtl files with the given data
/// </summary>
/// <param name="objData">Data parsed from the obj file</param>
/// <param name="mtlData">Data parsed from the mtl file</param>
/// <param name="objFilename">Output path</param>
/// <param name="makeMtl">Create a mtl file</param>
/// <param name="useExistingMtl">Use the mtlData to create the mtl file</param>
/// <returns></returns>
public static bool WriteObj(ObjData objData, MtlData mtlData, string objFilename, bool makeMtl, bool useExistingMtl)
{
// objFilename has the .obj extension
string directory = System.IO.Path.GetDirectoryName(objFilename);
string noExtension = System.IO.Path.GetFileNameWithoutExtension(objFilename);
string mtlRelative = string.Format("{0}.mtl", noExtension);
string mtlFilename = System.IO.Path.Combine(directory, mtlRelative);
List <string> mtlLines = new List <string>(); // To store the lines to append to the mtl file
try
{
using (StreamWriter obj = new StreamWriter(objFilename))
{
// mtllib, o, v, vt, g, usemtl, s, f
obj.WriteLine(GenericUtils.GetCreditsFile());
if (makeMtl)
{
obj.WriteLine(ObjUtils.GetNewMtlLib(mtlRelative));
}
LocalIndexesObj indexesObj = new LocalIndexesObj();
foreach (ObjectObj objectObj in objData.ObjectsList)
{
if (objectObj.ObjectName != null)
{
obj.WriteLine(ObjUtils.GetNewObject(objectObj.ObjectName)); // o
}
foreach (Point p in objectObj.VerticesList)
{
obj.WriteLine(ObjUtils.GetNewCoord(p.ToString())); // v
}
foreach (UVCoordinates uv in objectObj.UVsList)
{
obj.WriteLine(ObjUtils.GetNewTexCoord(uv.ToString())); // vt
}
foreach (Vector v in objectObj.NormalsList)
{
obj.WriteLine(ObjUtils.GetNewVertNormal(v.ToString())); // vn
}
if (objectObj.GroupName != null)
{
obj.WriteLine(ObjUtils.GetNewGroup(objectObj.GroupName)); // g
}
if (objectObj.MaterialName != null)
{
obj.WriteLine(ObjUtils.GetNewUseMtl(objectObj.MaterialName)); // usemtl
// Store lines in the mtl array to append to the file later
mtlLines.Add(MtlUtils.GetMtlData(objectObj.MaterialName, objectObj.TextureName));
}
if (objectObj.Smooth == -1)
{
obj.WriteLine(ObjUtils.GetNewSmoothGroup()); // s
}
else
{
obj.WriteLine(ObjUtils.GetNewSmoothGroup(objectObj.Smooth)); // s
}
foreach (VertIndexesObj vertIndexes in objectObj.VertIndexesList)
{
obj.WriteLine(ObjUtils.GetNewF(GetDataF(vertIndexes, indexesObj))); // f
}
indexesObj.vIndex += objectObj.VerticesList.Count;
indexesObj.vtIndex += objectObj.UVsList.Count;
indexesObj.vnIndex += objectObj.NormalsList.Count;
}
}
}
catch
{
return(false);
}
if (makeMtl) // If we dont delete materials
{
if (useExistingMtl && mtlData != null) // Use the parsed mtl
{
return(MtlExporter.WriteMtl(mtlData, mtlFilename));
}
else // Create a mtl from the data obtained in the obj
{
return(MtlExporter.WriteMtl(mtlLines, mtlFilename));
}
}
return(true);
}