public void Transform(Matrix TransformMatrix, double GridLambda = 3)
{
for (int i = 0; i < Vertices.Length; i++)
{
Vertices[i] = Vector3.Transform(Vertices[i], TransformMatrix);
VertexNormals[i] = Vector3.TransformNormal(VertexNormals[i], TransformMatrix);
}
Grid = new SpatialGrid(this, GridLambda);
CalculateFaceNormals();
CalculateTriangleProbabilities();
}
public TriangleMesh(Material Material, Matrix TransformMatrix, string Path, double GridLambda = 3, bool SmoothShading = true, bool BackFaceCulling = true)
{
this.Material = Material;
this.SmoothShading = SmoothShading;
this.BackFaceCulling = BackFaceCulling;
StreamReader Reader = new StreamReader(Path);
string Line;
//Read header
while ((Line = Reader.ReadLine()) != null)
{
string[] Tokens = Line.Split(' ');
if (Tokens[0] == "element")
{
if (Tokens[1] == "vertex")
{
Vertices = new Vector3[int.Parse(Tokens[2])];
}
if (Tokens[1] == "face")
{
NumFaces = int.Parse(Tokens[2]);
VertexIndices = new int[NumFaces * 3];
}
}
if (Tokens[0] == "end_header")
{
break;
}
}
//Import vertex normals, uvs, if they are specified
this.VertexNormals = new Vector3[Vertices.Length];
this.VertexUVs = new Vector2[Vertices.Length];
for (int i = 0; i < Vertices.Length; i++)
{
Line = Reader.ReadLine();
string[] Tokens = Line.Split(' ');
Vertices[i] = new Vector3(double.Parse(Tokens[0], CultureInfo.InvariantCulture), double.Parse(Tokens[1], CultureInfo.InvariantCulture), double.Parse(Tokens[2], CultureInfo.InvariantCulture));
if (Tokens.Length >= 6)
{
VertexNormals[i] = new Vector3(double.Parse(Tokens[3], CultureInfo.InvariantCulture), double.Parse(Tokens[4], CultureInfo.InvariantCulture), double.Parse(Tokens[5], CultureInfo.InvariantCulture));
}
if (Tokens.Length >= 8)
{
VertexUVs[i] = new Vector2(double.Parse(Tokens[6], CultureInfo.InvariantCulture), double.Parse(Tokens[7], CultureInfo.InvariantCulture));
}
}
//Import faces
for (int i = 0; i < NumFaces; i++)
{
Line = Reader.ReadLine();
string[] Tokens = Line.Split(' ');
VertexIndices[i * 3] = int.Parse(Tokens[1]);
VertexIndices[i * 3 + 1] = int.Parse(Tokens[2]);
VertexIndices[i * 3 + 2] = int.Parse(Tokens[3]);
}
//Move mesh to wanted location, calculated spatial grid
for (int i = 0; i < Vertices.Length; i++)
{
Vertices[i] = Vector3.Transform(Vertices[i], TransformMatrix);
VertexNormals[i] = Vector3.TransformNormal(VertexNormals[i], TransformMatrix);
}
Grid = new SpatialGrid(this, GridLambda);
CalculateFaceNormals();
CalculateTriangleProbabilities();
}