public bool Equals(VerticeDataSet vert)
{
if ((this.position - vert.position).LengthFast < 0.0001f &&
(this.texture - vert.texture).LengthFast < 0.0001f &&
(this.normal - vert.normal).LengthFast < 0.001f)
return true;
else
return false;
}
public static void parseFaceList(ref Mesh target, bool genNormal)
{
List<Vector3> PositionDataList = target.PositionDataList;
List<Vector3> NormalDataList = target.NormalDataList;
List<Vector2> TexCoordDataList = target.TexCoordDataList;
List<Face> faceList = target.FaceList;
removeTemp(ref faceList);
convertToTri(ref faceList);
Vector3[] tmpNormalData = new Vector3[NormalDataList.Count];
Vector3[] tmpTangentData = new Vector3[NormalDataList.Count];
Vector3[] normalPositionData = new Vector3[NormalDataList.Count];
Vector2[] normalUvData = new Vector2[NormalDataList.Count];
List<Vector3> normalHelperList = new List<Vector3> { };
List<Vector3> tangentHelperList = new List<Vector3> { };
List<Vector2> normalUvHelperList = new List<Vector2> { };
List<Vector3> positionHelperlist = new List<Vector3> { };
int faceCount = faceList.Count;
for (int i = 0; i < faceCount; i++)
{
// get all the information from Lists into Facelist
Vector3[] vposition = new Vector3[3];
Vector3[] vnormal = new Vector3[3];
Vector2[] vtexture = new Vector2[3];
for (int j = 0; j < 3; j++)
{
vposition[j] = PositionDataList[faceList[i].Vertice[j].Vi];
vnormal[j] = NormalDataList[faceList[i].Vertice[j].Ni];
vtexture[j] = TexCoordDataList[faceList[i].Vertice[j].Ti];
}
// calculating face normal and tangent
Vector3 v1 = vposition[1] - vposition[0];
Vector3 v2 = vposition[2] - vposition[0];
Vector2 vtexture1 = vtexture[1] - vtexture[0];
Vector2 vtexture2 = vtexture[2] - vtexture[0];
Vector3 fnormal = Vector3.Cross(v1, v2);
float s = 1f / (vtexture2.X - vtexture1.X * vtexture2.Y / vtexture1.Y);
float r = 1f / (vtexture1.X - vtexture2.X * vtexture1.Y / vtexture2.Y);
Vector3 tangent = Vector3.Normalize(r * v1 + s * v2);
if(tangent == Vector3.Zero){
Console.WriteLine("Tangent not generated");
}
Face curFace = faceList[i];
// finding out if normal/tangent can be smoothed
for (int j = 0; j < 3; j++)
{
Vertex curVert = curFace.Vertice[j];
// if Normal[Normalindice] has not been assigned a uv coordinate do so and set normal
if (normalUvData[curVert.Ni] == Vector2.Zero)
{
normalUvData[curVert.Ni] = vtexture[j];
normalPositionData[curVert.Ni] = vposition[j];
tmpNormalData[curVert.Ni] = fnormal;
tmpTangentData[curVert.Ni] = tangent;
}
else
{
// if Normal[Normalindice] is of the same Uv and place simply add
if (normalUvData[curVert.Ni] == vtexture[j] && normalPositionData[curVert.Ni] == vposition[j])
{
tmpNormalData[curVert.Ni] += fnormal;
tmpTangentData[curVert.Ni] += tangent;
}
else
{
int helperCount = normalUvHelperList.Count;
for (int k = 0; k < helperCount; k++)
{
// if Normalhelper[Normalindice] is of the same Uv and position simply add
if (normalUvHelperList[k] == vtexture[j] && positionHelperlist[k] == vposition[j])
{
tangentHelperList[k] += tangent;
normalHelperList[k] += fnormal;
curVert.Normalihelper = k;
}
}
// if matching Normalhelper has not been found create new one
if (faceList[i].Vertice[j].Normalihelper == -1)
{
normalUvHelperList.Add(vtexture[j]);
tangentHelperList.Add(tangent);
normalHelperList.Add(fnormal);
positionHelperlist.Add(vposition[j]);
curVert.Normalihelper = normalUvHelperList.Count - 1;
}
}
}
}
}
// put Faces into DataSets (so we can easyly compare them)
List<VerticeDataSet> vertList = new List<VerticeDataSet> { };
for (int i = 0; i < faceCount; i++)
{
Face curFace = faceList[i];
for (int j = 0; j < 3; j++)
{
Vertex oldVert = curFace.Vertice[j];
VerticeDataSet curVert = new VerticeDataSet();
curVert.position = PositionDataList[oldVert.Vi];
curVert.normal = NormalDataList[oldVert.Ni];
if (oldVert.Normalihelper != -1)
{
if(genNormal)
curVert.normal = Vector3.Normalize(normalHelperList[oldVert.Normalihelper]); //-dont use calculated normal
curVert.tangent = Vector3.Normalize(tangentHelperList[oldVert.Normalihelper]);
}
else
{
if (genNormal)
curVert.normal = Vector3.Normalize(tmpNormalData[oldVert.Ni]); //-dont use calculated normal
curVert.tangent = Vector3.Normalize(tmpTangentData[oldVert.Ni]);
}
curVert.texture = TexCoordDataList[oldVert.Ti];
vertList.Add(curVert);
}
}
//Remove unneded verts
int noVerts = vertList.Count;
List<VerticeDataSet> newVertList = new List<VerticeDataSet> {};
List<int> newIndiceList = new List<int> { };
for (int i = 0; i < noVerts; i++)
{
VerticeDataSet curVert = vertList[i];
int curNewVertCount = newVertList.Count;
int index = -1;
for (int j = curNewVertCount - 1; j >= 0; j--)
{
if (newVertList[j].Equals(curVert))
{
index = j;
}
}
if (index < 0)
{
index = curNewVertCount;
newVertList.Add(curVert);
}
newIndiceList.Add(index);
}
//put Faces into Arrays
int newIndiceCount = newIndiceList.Count;
int[] indicesVboData = new int[newIndiceCount];
int newVertCount = newVertList.Count;
Vector3[] PositionData = new Vector3[newVertCount];
Vector3[] NormalData = new Vector3[newVertCount];
Vector3[] TangentData = new Vector3[newVertCount];
Vector2[] TexCoordData = new Vector2[newVertCount];
for (int i = 0; i < newVertCount; i++)
{
VerticeDataSet curVert = newVertList[i];
PositionData[i] = curVert.position;
NormalData[i] = curVert.normal;
TangentData[i] = curVert.tangent;
TexCoordData[i] = curVert.texture;
}
for (int i = 0; i < newIndiceCount; i++)
{
indicesVboData[i] = newIndiceList[i];
}
// //calculate a bounding Sphere
// float sphere = 0;
// foreach (var vec in PositionData)
// {
// float length = vec.Length;
// if (length > sphere)
// sphere = length;
// }
//deleting unneded
target.PositionDataList = null;
target.NormalDataList = null;
target.TangentData = null;
target.ElementsData = null;
//returning mesh info ... DONE :D
target.PositionData = PositionData;
target.NormalData = NormalData;
target.TangentData = TangentData;
target.TexCoordData = TexCoordData;
target.ElementsData = indicesVboData;
//target.boundingSphere = sphere;
}