public MObj(IObj obj, MeshSettings defaultMeshSettings)
{
Obj = obj;
Faces = new List <MFace>();
Vertices = new List <MVertex>();
foreach (var face in Obj.Faces.Where(x => x.Material.Reflectance != null))
{
var illuminanceAngles = new MFaceIlluminanceAngles(face.Normal, face.Material, defaultMeshSettings.SpectrumAngles.Theta, defaultMeshSettings.SpectrumAngles.Mu, defaultMeshSettings.SpectrumAngles.Phi, defaultMeshSettings.SpectrumAngles.GaussWeight, defaultMeshSettings.NSH);
var vertices = new MVertex[3];
for (int i = 0; i < 3; i++)
{
var vertex = new MVertex(face, Obj.Vertices[face.VertexIndexes[i]], illuminanceAngles);
Vertices.Add(vertex);
vertices[i] = vertex;
}
Faces.Add(new MFace(face, this, vertices, defaultMeshSettings, illuminanceAngles));
}
}
public MFaceDivideResult Divide()
{
if (!CanDivide())
{
return(null);
}
var result = new MFaceDivideResult();
// divide face
// Ищем самую длинную сторону
Point3D v12 = Vertices[0].Point - Vertices[1].Point;
Point3D v23 = Vertices[1].Point - Vertices[2].Point;
Point3D v31 = Vertices[2].Point - Vertices[0].Point;
int[] k;
if (v12.Length2 > v23.Length2 && v12.Length2 > v31.Length2)
{
k = new int[] { 0, 1, 2 }
}
;
else if (v23.Length2 > v12.Length2 && v23.Length2 > v31.Length2)
{
k = new int[] { 1, 2, 0 }
}
;
else
{
k = new int[] { 2, 0, 1 }
};
// Вычисляю координату новой вершины - центра гиппотренузы
Point3D p = (Vertices[k[0]].Point - Vertices[k[1]].Point) / 2 + Vertices[k[1]].Point;
// Новая вершина
result.NewVertex = new MVertex(Vertices[0].Face, p, Vertices[0].IlluminanceAngles);
// Создаем новую грань
var newVertices = new MVertex[3];
newVertices[k[1]] = Vertices[k[2]];
newVertices[k[2]] = Vertices[k[0]];
newVertices[k[0]] = result.NewVertex;
result.NewFace = new MFace(this, newVertices);
Obj.Faces.Add(result.NewFace);
Obj.Vertices.Add(result.NewVertex);
// Меняем вершину у сещуствующей
Vertices[k[0]] = result.NewVertex;
Deep++;
return(result);
}
bool CanDivide()
{
var result =
Deep < MeshSettings.MaxDivideDeep; // &&
//( Face.Material.Reflectance != null );
return(result);
}
}