public static GeometryModel ImportOBJModel(string FileName)
{
GeometryModel Model = LoadModel(FileName);
return(Model);
}
public virtual object Clone()
{
GeometryModel NewModel = new GeometryModel(this.Name);
List <Vector3> NewVertexList = new List <Vector3>();
for (int i = 0; i < VertexList.Count; i++)
{
NewVertexList.Add(new Vector3(VertexList[i].X, VertexList[i].Y, VertexList[i].Z));
}
List <Vector2> NewTexcoordList = new List <Vector2>();
for (int i = 0; i < TexcoordList.Count; i++)
{
NewTexcoordList.Add(new Vector2(TexcoordList[i].X, TexcoordList[i].Y));
}
List <Vector3> NewNormalList = new List <Vector3>();
for (int i = 0; i < NormalList.Count; i++)
{
NewNormalList.Add(new Vector3(NormalList[i].X, NormalList[i].Y, NormalList[i].Z));
}
Dictionary <string, string> NewTextureReferences = new Dictionary <string, string>();
foreach (KeyValuePair <string, string> entry in Textures)
{
NewTextureReferences.Add(entry.Key, entry.Value);
}
NewModel.Name = (string)Name.Clone();
NewModel.VertexList = NewVertexList;
NewModel.TexcoordList = NewTexcoordList;
NewModel.NormalList = NewNormalList;
NewModel.Textures = NewTextureReferences;
NewModel.Shader = Shader.Clone();
NewModel.DepthShader = DepthShader.Clone();
return(NewModel);
}
//TODO
//Add Vertex Normal Smoothing
public static GeometryModel LoadModel(String ModelName)
{
List <Vector3> VertexBuffer = new List <Vector3>();
List <Vector2> TexCoordBuffer = new List <Vector2>();
List <Vector3> NormalBuffer = new List <Vector3>();
try
{
StreamReader file = new StreamReader(ModelName);
string[] Lines = File.ReadAllLines(ModelName);
List <Vector3> VertexLookupBuffer = new List <Vector3>();
List <Vector2> TexCoordLookupBuffer = new List <Vector2>();
List <Vector3> NormalLookupBuffer = new List <Vector3>();
List <Vector3> SmoothNormalLookUp = new List <Vector3>();
for (int i = 0; i < Lines.Length; i++)
{
if (Lines[i].StartsWith("v "))
{
String[] bits = Lines[i].Replace("v ", "").Split();
VertexLookupBuffer.Add(new Vector3(float.Parse(bits[0]), float.Parse(bits[1]), float.Parse(bits[2])));
}
else if (Lines[i].StartsWith("vt "))
{
String[] bits = Lines[i].Replace("vt ", "").Split();
TexCoordLookupBuffer.Add(new Vector2(float.Parse(bits[0]), 1.0f - float.Parse(bits[1])));
}
else if (Lines[i].StartsWith("vn "))
{
String[] bits = Lines[i].Replace("vn ", "").Split();
NormalLookupBuffer.Add(new Vector3(float.Parse(bits[0]), float.Parse(bits[1]), float.Parse(bits[2])));
}
}
/*
* for (int i = 0; i < Lines.Length; i++)
* {
* if (Lines[i].StartsWith("v "))
* {
* String[] bits = Lines[i].Replace("v ", "").Split();
* VertexLookupBuffer.Add(new Vector3(float.Parse(bits[0]), float.Parse(bits[1]), float.Parse(bits[2])));
* }
* else if (Lines[i].StartsWith("vt "))
* {
* TexCoordStartIndex = i;
* break;
* }
* }
*
* for (int i = TexCoordStartIndex; i < Lines.Length; i++)
* {
* if (Lines[i].StartsWith("vt "))
* {
* String[] bits = Lines[i].Replace("vt ", "").Split();
* TexCoordLookupBuffer.Add(new Vector2(float.Parse(bits[0]), 1.0f - float.Parse(bits[1])));
* }
* else if (Lines[i].StartsWith("vn "))
* {
* NormalStartIndex = i;
* break;
* }
* }
*
* for (int i = NormalStartIndex; i < Lines.Length; i++)
* {
* if (Lines[i].StartsWith("vn "))
* {
* String[] bits = Lines[i].Replace("vn ", "").Split();
* NormalLookupBuffer.Add(new Vector3(float.Parse(bits[0]), float.Parse(bits[1]), float.Parse(bits[2])));
* }
* else if (Lines[i].StartsWith("f "))
* {
* FaceStartIndex = i;
* break;
* }
* }
*
* //generate smooth normals
*
* for (int i = 0; i < VertexLookupBuffer.Count; i++)
* {
* int NormalCount = 0;
* Vector3 NormalSum = new Vector3();
*
* for (int j = FaceStartIndex; j < Lines.Length; j++)
* {
* if (Lines[j].StartsWith("f "))
* {
* String[] bits = Lines[j].Replace("f ", "").Replace(" ", "/").Split('/');
*
* int Index0 = int.Parse(bits[2]) - 1;
* int Index1 = int.Parse(bits[5]) - 1;
* int Index2 = int.Parse(bits[8]) - 1;
*
* if (Index0 == i || Index1 == i || Index2 == i)
* {
* //Shares Vertex with lookup vertex
* NormalSum += NormalLookupBuffer.ElementAt(int.Parse(bits[2]) - 1);
* NormalCount++;
* }
* }
* }
* NormalSum /= NormalCount;
* SmoothNormalLookUp.Add( NormalSum);
* }
*/
for (int i = 0; i < Lines.Length; i++)
{
if (Lines[i].StartsWith("f "))
{
String[] bits = Lines[i].Replace("f ", "").Replace(" ", "/").Split('/');
for (int j = 0; j < bits.Length; j += 3)
{
VertexBuffer.Add(VertexLookupBuffer.ElementAt(int.Parse(bits[j]) - 1));
TexCoordBuffer.Add(TexCoordLookupBuffer.ElementAt(int.Parse(bits[j + 1]) - 1));
NormalBuffer.Add(NormalLookupBuffer.ElementAt(int.Parse(bits[j + 2]) - 1));
}
}
}
}
catch (FileNotFoundException e)
{
Debug.WriteLine(e.Message);
Debug.WriteLine("Model " + ModelName + " Not found");
}
//check if smooth normals
//grab 3 normal values for polygon bias
//search all
GeometryModel Model = new GeometryModel();
Model.VertexList = VertexBuffer;
Model.TexcoordList = TexCoordBuffer;
Model.NormalList = NormalBuffer;
List <Vector3> Tangents = GraphicsUtil.GenerateTangents(VertexBuffer, TexCoordBuffer, NormalBuffer);
return(Model);
}