/// <summary>
/// Loads a model from a file.
/// </summary>
/// <param name="filename">File to load model from</param>
/// <returns>ObjVolume of loaded model</returns>
public static ObjVolume LoadFromFile(string filename)
{
ObjVolume obj = new ObjVolume();
try
{
using (StreamReader reader = new StreamReader(new FileStream(filename, FileMode.Open, FileAccess.Read)))
{
obj = LoadFromString(reader.ReadToEnd());
}
}
catch (FileNotFoundException)
{
Console.WriteLine("File not found: {0}", filename);
}
catch (Exception e)
{
Console.WriteLine("Error loading file: {0}.\n{1}", filename, e);
}
return(obj);
}
public static ObjVolume LoadFromString(string obj)
{
// Seperate lines from the file
List <String> lines = new List <string>(obj.Split('\n'));
// Lists to hold model data
List <Vector3> verts = new List <Vector3>();
List <Vector3> normals = new List <Vector3>();
List <Vector2> texs = new List <Vector2>();
List <Tuple <TempVertex, TempVertex, TempVertex> > faces = new List <Tuple <TempVertex, TempVertex, TempVertex> >();
// Base values
verts.Add(new Vector3());
texs.Add(new Vector2());
normals.Add(new Vector3());
// Read file line by line
foreach (String line in lines)
{
if (line.StartsWith("v ")) // Vertex definition
{
// Cut off beginning of line
String temp = line.Substring(2);
Vector3 vec = new Vector3();
if (temp.Trim().Count((char c) => c == ' ') == 2) // Check if there's enough elements for a vertex
{
String[] vertparts = temp.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
// Attempt to parse each part of the vertice
bool success = float.TryParse(vertparts[0], out vec.X);
success |= float.TryParse(vertparts[1], out vec.Y);
success |= float.TryParse(vertparts[2], out vec.Z);
// If any of the parses failed, report the error
if (!success)
{
Console.WriteLine("Error parsing vertex: {0}", line);
}
}
else
{
Console.WriteLine("Error parsing vertex: {0}", line);
}
verts.Add(vec);
}
else if (line.StartsWith("vt ")) // Texture coordinate
{
// Cut off beginning of line
String temp = line.Substring(2);
Vector2 vec = new Vector2();
if (temp.Trim().Count((char c) => c == ' ') > 0) // Check if there's enough elements for a vertex
{
String[] texcoordparts = temp.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
// Attempt to parse each part of the vertice
bool success = float.TryParse(texcoordparts[0], out vec.X);
success |= float.TryParse(texcoordparts[1], out vec.Y);
// If any of the parses failed, report the error
if (!success)
{
Console.WriteLine("Error parsing texture coordinate: {0}", line);
}
}
else
{
Console.WriteLine("Error parsing texture coordinate: {0}", line);
}
texs.Add(vec);
}
else if (line.StartsWith("vn ")) // Normal vector
{
// Cut off beginning of line
String temp = line.Substring(2);
Vector3 vec = new Vector3();
if (temp.Trim().Count((char c) => c == ' ') == 2) // Check if there's enough elements for a normal
{
String[] vertparts = temp.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
// Attempt to parse each part of the vertice
bool success = float.TryParse(vertparts[0], out vec.X);
success |= float.TryParse(vertparts[1], out vec.Y);
success |= float.TryParse(vertparts[2], out vec.Z);
// If any of the parses failed, report the error
if (!success)
{
Console.WriteLine("Error parsing normal: {0}", line);
}
}
else
{
Console.WriteLine("Error parsing normal: {0}", line);
}
normals.Add(vec);
}
else if (line.StartsWith("f ")) // Face definition
{
// Cut off beginning of line
String temp = line.Substring(2);
Tuple <TempVertex, TempVertex, TempVertex> face = new Tuple <TempVertex, TempVertex, TempVertex>(new TempVertex(), new TempVertex(), new TempVertex());
if (temp.Trim().Count((char c) => c == ' ') == 2) // Check if there's enough elements for a face
{
String[] faceparts = temp.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
int v1, v2, v3;
int t1, t2, t3;
int n1, n2, n3;
// Attempt to parse each part of the face
bool success = int.TryParse(faceparts[0].Split('/')[0], out v1);
success |= int.TryParse(faceparts[1].Split('/')[0], out v2);
success |= int.TryParse(faceparts[2].Split('/')[0], out v3);
if (faceparts[0].Count((char c) => c == '/') >= 2)
{
success |= int.TryParse(faceparts[0].Split('/')[1], out t1);
success |= int.TryParse(faceparts[1].Split('/')[1], out t2);
success |= int.TryParse(faceparts[2].Split('/')[1], out t3);
success |= int.TryParse(faceparts[0].Split('/')[2], out n1);
success |= int.TryParse(faceparts[1].Split('/')[2], out n2);
success |= int.TryParse(faceparts[2].Split('/')[2], out n3);
}
else
{
if (texs.Count > v1 && texs.Count > v2 && texs.Count > v3)
{
t1 = v1;
t2 = v2;
t3 = v3;
}
else
{
t1 = 0;
t2 = 0;
t3 = 0;
}
if (normals.Count > v1 && normals.Count > v2 && normals.Count > v3)
{
n1 = v1;
n2 = v2;
n3 = v3;
}
else
{
n1 = 0;
n2 = 0;
n3 = 0;
}
}
// If any of the parses failed, report the error
if (!success)
{
Console.WriteLine("Error parsing face: {0}", line);
}
else
{
TempVertex tv1 = new TempVertex(v1, n1, t1);
TempVertex tv2 = new TempVertex(v2, n2, t2);
TempVertex tv3 = new TempVertex(v3, n3, t3);
face = new Tuple <TempVertex, TempVertex, TempVertex>(tv1, tv2, tv3);
faces.Add(face);
}
}
else
{
Console.WriteLine("Error parsing face: {0}", line);
}
}
}
// Create the ObjVolume
ObjVolume vol = new ObjVolume();
foreach (var face in faces)
{
FaceVertex v1 = new FaceVertex(verts[face.Item1.Vertex], normals[face.Item1.Normal], texs[face.Item1.Texcoord]);
FaceVertex v2 = new FaceVertex(verts[face.Item2.Vertex], normals[face.Item2.Normal], texs[face.Item2.Texcoord]);
FaceVertex v3 = new FaceVertex(verts[face.Item3.Vertex], normals[face.Item3.Normal], texs[face.Item3.Texcoord]);
vol.faces.Add(new Tuple <FaceVertex, FaceVertex, FaceVertex>(v1, v2, v3));
}
return(vol);
}
private void initScene()
{
// Add example objects
TexturedCube floor1 = new TexturedCube
{
TextureID = textures["opentksquare.png"],
Material = new Material(new Vector3(0.2f), new Vector3(1), new Vector3(0.1f), 5)
};
floor1.Position += new Vector3(0, 0, 0);
floor1.Scale = new Vector3(10, 0.1f, 10);
floor1.CalculateNormals();
objects.Add(floor1);
TexturedCube floor2 = new TexturedCube
{
TextureID = textures["opentksquare.png"],
Material = new Material(new Vector3(0.2f), new Vector3(1), new Vector3(0.1f), 5)
};
floor2.Position += new Vector3(20, 0, 0);
floor2.Scale = new Vector3(10, 0.1f, 10);
floor2.CalculateNormals();
objects.Add(floor2);
earth = ObjVolume.LoadFromFile("earth.obj");
earth.TextureID = textures["earth.png"];
earth.Material = materials["earth"];
earth.Position = new Vector3(20, 3, 0);
objects.Add(earth);
ObjVolume tv = ObjVolume.LoadFromFile("tv.obj");
tv.TextureID = textures["tvtexture.png"];
tv.Material = materials["tv"];
tv.Scale = new Vector3(2);
objects.Add(tv);
camArrow = ObjVolume.LoadFromFile("arrow.obj");
camArrow.TextureID = textures["blank.png"];
camArrow.Material = new Material(new Vector3(0.2f), new Vector3(0.7f, 0.5f, 0.5f), new Vector3(0.1f));
camArrow.Scale = new Vector3(0.2f);
objects.Add(camArrow);
tvScreen = ObjVolume.LoadFromFile("tvscreen.obj");
tvScreen.Scale = new Vector3(2);
tvScreen.TextureID = textures["screen"];
tvScreen.Material = new Material(new Vector3(1.0f), new Vector3(1.0f), new Vector3(0.5f));
tvScreen.Shader = "screen";
objects.Add(tvScreen);
// Setup camera
mainCamera.Position += new Vector3(0f, 2f, 3f);
screenCamera.Position += new Vector3(20f, 3f, 3f);
camArrow.Position = screenCamera.Position;
camArrow.Rotation = screenCamera.Orientation;
// Add lights
activeLights.Add(new Light(new Vector3(4, 5, 0), new Vector3(0.3f, 0.3f, 0.4f)));
activeLights.Add(new Light(new Vector3(22, 5, 1), new Vector3(0.4f, 0.4f, 0.4f)));
}