private void GenerateIndices()
{
List <StaticVertex> tempVertices = new List <StaticVertex>();
List <int> tempIndices = new List <int>();
foreach (StaticVertex v in VertexData)
{
//verifica se esiste un vertice già nella lista
int i = 0;
bool found = false;
foreach (StaticVertex v2 in tempVertices)
{
if (StaticVertex.Compare(v, v2))
{
//travato
found = true;
break;
}
i++;
}
if (found)
{
tempIndices.Add(i);
StaticVertex v2 = tempVertices[i];
//somma le normali
}
else
{
i = tempVertices.Count;
tempVertices.Add(v);
tempIndices.Add(i);
}
//normali
StaticVertex vTemp = tempVertices[i];
vTemp.Normal += v.Normal;
tempVertices[i] = vTemp;
}
//normalizzazione finale
VertexData.Clear();
//foreach (VertexFormat v in tempVertices)
//{
// v.Normal.Normalize();
// Vertices.Add(v);
//}
VertexData.AddRange(tempVertices);
IndexData.Clear();
IndexData.AddRange(tempIndices);
}
private void GenerateNormal()
{
for (int i = 0; i < VertexData.Count; i++)
{
StaticVertex v = VertexData[i];
v.Normal = new Vector3();
VertexData[i] = v;
}
for (int i = 0; i < IndexData.Count; i += 3)
{
StaticVertex p1 = VertexData[IndexData[i]];
StaticVertex p2 = VertexData[IndexData[i + 1]];
StaticVertex p3 = VertexData[IndexData[i + 2]];
Vector3 V1 = p2.Position - p1.Position;
Vector3 V2 = p3.Position - p1.Position;
Vector3 N = Vector3.Cross(V1, V2);
N.Normalize();
p1.Normal += N;
p2.Normal += N;
p3.Normal += N;
VertexData[IndexData[i]] = p1;
VertexData[IndexData[i + 1]] = p2;
VertexData[IndexData[i + 2]] = p3;
}
//normalize
for (int i = 0; i < VertexData.Count; i++)
{
StaticVertex v = VertexData[i];
v.Normal.Normalize();
VertexData[i] = v;
}
}
/// <summary>
/// Compare 2 vertices on Position and Texture Coordinate
/// </summary>
/// <param name="a">First vertex</param>
/// <param name="b">Second vertex</param>
/// <returns></returns>
internal static bool Compare(StaticVertex a, StaticVertex b)
{
return(a.Position == b.Position &&
a.TextureCoordinate == b.TextureCoordinate);
}
private static WaveFrontModel CreateGeom(string name, List<Vector3> position, List<Vector3> normals, List<Vector2> texture, List<int> faces, Material mate)
{
WaveFrontModel geom = new WaveFrontModel();
geom.Name = name;
geom.VertexData = new List<StaticVertex>();
geom.IndexData = new List<int>();
int stride = 0;
if (position.Count > 0)
stride++;
if (normals.Count > 0)
stride++;
if (texture.Count > 0)
stride++;
int vertexCount = faces.Count / stride;
int k = 0;
for (int i = 0; i < vertexCount; i++)
{
StaticVertex v = new StaticVertex();
if (position.Count > 0)
{
v.Position = position[faces[k] - 1];
k++;
}
if (texture.Count > 0)
{
v.TextureCoordinate = texture[faces[k] - 1];
k++;
}
if (normals.Count > 0)
{
v.Normal = normals[faces[k] - 1];
k++;
}
geom.VertexData.Add(v);
}
for (int i = 0; i < (geom.VertexData.Count); i++)
{
geom.IndexData.Add((short)i);
}
geom.MeshMaterial.Add(mate);
geom.FaceCounts.Add(geom.IndexData.Count);
return geom;
}
/// <summary>
/// Compare 2 vertices on Position and Texture Coordinate
/// </summary>
/// <param name="a">First vertex</param>
/// <param name="b">Second vertex</param>
/// <returns></returns>
internal static bool Compare(StaticVertex a, StaticVertex b)
{
return a.Position == b.Position &&
a.TextureCoordinate == b.TextureCoordinate;
}
private static WaveFrontModel CreateGeom(string name, List <Vector3> position, List <Vector3> normals, List <Vector2> texture, List <int> faces, Material mate)
{
WaveFrontModel geom = new WaveFrontModel();
geom.Name = name;
geom.VertexData = new List <StaticVertex>();
geom.IndexData = new List <int>();
int stride = 0;
if (position.Count > 0)
{
stride++;
}
if (normals.Count > 0)
{
stride++;
}
if (texture.Count > 0)
{
stride++;
}
int vertexCount = faces.Count / stride;
int k = 0;
for (int i = 0; i < vertexCount; i++)
{
StaticVertex v = new StaticVertex();
if (position.Count > 0)
{
v.Position = position[faces[k] - 1];
k++;
}
if (texture.Count > 0)
{
v.TextureCoordinate = texture[faces[k] - 1];
k++;
}
if (normals.Count > 0)
{
v.Normal = normals[faces[k] - 1];
k++;
}
geom.VertexData.Add(v);
}
for (int i = 0; i < (geom.VertexData.Count); i++)
{
geom.IndexData.Add((short)i);
}
geom.MeshMaterial.Add(mate);
geom.FaceCounts.Add(geom.IndexData.Count);
return(geom);
}
