private void SetDefault()
{
ambient = new List <float>();
diffuse = new List <float>();
specular = new List <float>();
alpha = 1.0f;
shininess = 0.0f;
texture = null;
illumType = Material.IllumType.FLAT;
}
public Dictionary <string, Material> LoadFile(String fileName)
{
map = new Dictionary <string, Material>();
FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
int lastS = fileName.LastIndexOf('/');
string filePath = fileName.Substring(0, lastS + 1);
try
{
StreamReader reader = new StreamReader(fileStream);
SetDefault();
Regex regex = new Regex(@"[\s]+");
while (!reader.EndOfStream)
{
string line = reader.ReadLine().Trim();
if (line.ToLower().StartsWith("newmtl"))
{
string[] splittedGroupLine = regex.Split(line);
if (latestGroup != null)
{
AddMaterial();
}
SetDefault();
latestGroup = splittedGroupLine[1];
while (!reader.EndOfStream)
{
line = reader.ReadLine().Trim();
if (line.ToLower().StartsWith("ka "))
{
string[] splitted = regex.Split(line);
for (int i = 1; i < splitted.Length; i++)
{
ambient.Add(Convert.ToSingle(splitted[i], numformat));
}
}
if (line.ToLower().StartsWith("ks "))
{
string[] splitted = regex.Split(line);
for (int i = 1; i < splitted.Length; i++)
{
specular.Add(ToFloat(splitted[i]));
}
}
if (line.ToLower().StartsWith("kd "))
{
string[] splitted = regex.Split(line);
for (int i = 1; i < splitted.Length; i++)
{
diffuse.Add(ToFloat(splitted[i]));
}
}
if (line.ToLower().StartsWith("d ") || line.StartsWith("Tr "))
{
string[] splitted = regex.Split(line);
alpha = ToFloat(splitted[1]);
}
if (line.ToLower().StartsWith("ns "))
{
string[] splitted = regex.Split(line);
shininess = ToFloat(splitted[1]);
}
if (line.ToLower().StartsWith("illum "))
{
string[] splitted = regex.Split(line);
int num = ToInt(splitted[1]);
if (num == 1)
{
illumType = Material.IllumType.FLAT;
}
else if (num == 2)
{
illumType = Material.IllumType.SPECULAR;
}
}
if ((line.ToLower().StartsWith("map_kd") || line.ToLower().StartsWith("map_ks")))
{
string[] splitted = regex.Split(line);
if (splitted.Length > 1)
{
texture = new BasicTexture(new Pixmap(filePath + splitted[1]));
}
}
}
}
}
AddMaterial();
}
finally
{
fileStream.Close();
}
return(map);
}
private void SetDefault()
{
ambient = new List<float>();
diffuse = new List<float>();
specular = new List<float>();
alpha = 1.0f;
shininess = 0.0f;
texture = null;
illumType = Material.IllumType.FLAT;
}
public Dictionary<string, Material> LoadFile(String fileName)
{
map = new Dictionary<string, Material>();
FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
int lastS = fileName.LastIndexOf('/');
string filePath = fileName.Substring(0, lastS+1);
try
{
StreamReader reader = new StreamReader(fileStream);
SetDefault();
Regex regex = new Regex(@"[\s]+");
while (!reader.EndOfStream)
{
string line = reader.ReadLine().Trim();
if (line.ToLower().StartsWith("newmtl"))
{
string[] splittedGroupLine = regex.Split(line);
if (latestGroup != null)
AddMaterial();
SetDefault();
latestGroup = splittedGroupLine[1];
while (!reader.EndOfStream)
{
line = reader.ReadLine().Trim();
if (line.ToLower().StartsWith("ka "))
{
string[] splitted = regex.Split(line);
for (int i = 1; i < splitted.Length; i++)
ambient.Add(Convert.ToSingle(splitted[i], numformat));
}
if (line.ToLower().StartsWith("ks "))
{
string[] splitted = regex.Split(line);
for (int i = 1; i < splitted.Length; i++)
specular.Add(ToFloat(splitted[i]));
}
if (line.ToLower().StartsWith("kd "))
{
string[] splitted = regex.Split(line);
for (int i = 1; i < splitted.Length; i++)
diffuse.Add(ToFloat(splitted[i]));
}
if (line.ToLower().StartsWith("d ") || line.StartsWith("Tr "))
{
string[] splitted = regex.Split(line);
alpha = ToFloat(splitted[1]);
}
if (line.ToLower().StartsWith("ns "))
{
string[] splitted = regex.Split(line);
shininess = ToFloat(splitted[1]);
}
if (line.ToLower().StartsWith("illum "))
{
string[] splitted = regex.Split(line);
int num = ToInt(splitted[1]);
if (num == 1)
illumType = Material.IllumType.FLAT;
else if (num == 2)
illumType = Material.IllumType.SPECULAR;
}
if ((line.ToLower().StartsWith("map_kd") || line.ToLower().StartsWith("map_ks")))
{
string[] splitted = regex.Split(line);
if(splitted.Length>1)
texture = new BasicTexture(new Pixmap(filePath + splitted[1]));
}
}
}
}
AddMaterial();
}
finally
{
fileStream.Close();
}
return map;
}
private void GetMaterial(StreamReader reader, string name, Dictionary <string, Material> dict, string fileName, Dictionary <string, Texture> textureList)
{
Material material = new Material();
float[] ambient = new float[4];
float[] diffuse = new float[4];
float[] specular = new float[4];
float alpha = ambient[3] = diffuse[3] = specular[3] = 1.0f;
float shininess = 0.2f;
Material.IllumType illumType = Material.IllumType.SPECULAR;
Texture texture = null;
while (!reader.EndOfStream)
{
string line = reader.ReadLine().Trim();
string[] words = regex.Split(line);
string firstWord = words[0].ToLower();
if (firstWord.Equals("newmtl"))
{
GetMaterial(reader, words[1].Trim(), dict, fileName, textureList);
}
else if (firstWord.Equals("ka"))
{
for (int i = 0; i < 3; i++)
{
ambient[i] = (ToFloat(words[i + 1]));
}
}
else if (firstWord.Equals("kd"))
{
for (int i = 0; i < 3; i++)
{
diffuse[i] = (ToFloat(words[i + 1]));
}
}
else if (firstWord.Equals("ks"))
{
for (int i = 0; i < 3; i++)
{
specular[i] = (ToFloat(words[i + 1]));
}
}
else if (firstWord.Equals("d") || firstWord.Equals("tr"))
{
alpha = ambient[3] = diffuse[3] = specular[3] = ToFloat(words[1]);
}
else if (firstWord.Equals("ns"))
{
shininess = ToFloat(words[1]);
}
else if (firstWord.Equals("illum"))
{
if (words[1].Equals("1"))
{
illumType = Material.IllumType.FLAT;
}
else if (words[1].Equals("2"))
{
illumType = Material.IllumType.SPECULAR;
}
}
else if (firstWord.Equals("map_kd") || firstWord.Equals("map_ks"))
{
int lastS = fileName.LastIndexOf('/');
string filePath = fileName.Substring(0, lastS + 1);
if (words.Length > 1)
{
if (!textureList.ContainsKey(words[1]))
{
texture = new BasicTexture(new Pixmap(filePath + words[1]));
//texture = Texture.CreateFromFile(filePath + words[1]);
textureList.Add(words[1], texture);
}
else
{
texture = textureList[words[1]];
}
}
}
}
material.SetAmbient(ambient);
material.SetDiffuse(diffuse);
material.SetSpecular(specular);
material.SetAlpha(alpha);
material.SetShininess(shininess);
material.SetIllumType(illumType);
material.SetTexture(texture);
dict.Add(name, material);
}
