public static void readOBJ(string filename, ref List <OBJFileReader.OBJFace> faces, ref List <Vector3> positions, ref List <Vector3> normals, ref List <Vector2> texCoords, ref MaterialManager.Material material)
{
// Sections
// . normals
// . texcoords
// . verts
// . faces
StreamReader sourceFile = new StreamReader(filename);
string line;
do
{
line = sourceFile.ReadLine();
if (line == null)
{
break;
}
if (line.Contains("#"))
{
// comment
}
else if (line.Contains("mtllib"))
{
// material
// Read material properties from file
OBJFileReader.readMaterialFile(line, ref material);
}
else if (line.Contains("usemtl"))
{
// material, what material to use.
}
else if (line.Contains("vn"))
{
normals.Add(readNormal(line));
}
else if (line.Contains("vt"))
{
texCoords.Add(readVector2(line));
}
else if (line.Contains("v"))
{
positions.Add(readPos(line));
}
else if (line.Contains("f"))
{
OBJFileReader.readFaces(line, ref faces);
}
} while (line != null);
sourceFile.Close();
}
// Reads on .obs file
static public Mesh CreateFromFile(string filename)
{
List <OBJFileReader.OBJFace> faces = new List <OBJFileReader.OBJFace>();
List <Vector3> positions = new List <Vector3>();
List <Vector3> normals = new List <Vector3>();
List <Vector2> texCoords = new List <Vector2>();
MaterialManager.Material meshMaterial = null;
OBJFileReader.readOBJ(filename, ref faces, ref positions, ref normals, ref texCoords, ref meshMaterial);
// Create positions
List <PosNorTexVertex> vertices = new List <PosNorTexVertex>(positions.Count);
Console.WriteLine("Mesh read from " + filename);
foreach (OBJFileReader.OBJFace face in faces)
{
vertices.Add(new PosNorTexVertex(positions[(int)face.positionIndex - 1], normals[(int)face.normalIndex - 1], texCoords[(int)face.texCoordIndex - 1]));
}
return(new Mesh(vertices, meshMaterial));
}
static Vector3 readNormal(string normalLine)
{
// vn # # #
return(OBJFileReader.readVector3(normalLine));
}
static Vector3 readPos(string posLine)
{
return(OBJFileReader.readVector3(posLine));
}
public static Material loadMaterial(string materialFileName)
{
string fullPath = dataDir + materialFileName;
StreamReader sourceFile = new StreamReader(fullPath);
string line;
string materialName = null;
bool existingFound = false;
Material newMaterial = null;
char[] space = { ' ' };
// First check if we already have this material
do
{
line = sourceFile.ReadLine();
if (line == null)
{
break;
}
else if (line.Contains("newmtl"))
{
materialName = line.Split(space)[1];
break;
}
}while (line != null);
newMaterial = getMaterialByName(materialName);
if (newMaterial != null)
{
sourceFile.Close();
return(newMaterial);
}
else
{
newMaterial = new Material();
newMaterial.materialName = materialName;
}
// Read rest of the file
// use . as separator instead of system default
System.Globalization.NumberFormatInfo nfi = new System.Globalization.CultureInfo("en-US", false).NumberFormat;
do
{
line = sourceFile.ReadLine();
if (line == null)
{
break;
}
if (line.Contains("#"))
{
// comment
}
else if (line.Contains("map_Kd"))
{
// map_Kd filename.png
newMaterial.textureName = line.Split(space)[1];
newMaterial.textureGLIndex = loadTexture(newMaterial.textureName);
}
else if (line.Contains("illum"))
{
newMaterial.illumination = Single.Parse(line.Split(space)[1], nfi);
}
else if (line.Contains("Ka"))
{
newMaterial.alpha = OBJFileReader.readVector3(line);
}
else if (line.Contains("Kd"))
{
newMaterial.diffuse = OBJFileReader.readVector3(line);
}
else if (line.Contains("Ks"))
{
newMaterial.specular = OBJFileReader.readVector3(line);
}
} while (line != null);
sourceFile.Close();
materials.Add(newMaterial);
return(newMaterial);
}
