public static Kn5Node.Vertex Transform(this Kn5Node.Vertex v, Mat4x4 m, double offsetAlongNormal = 0d)
{
var posVec = Vec3.Transform(v.Position, m);
var normalVec = Vec3.TransformNormal(v.Normal, m);
if (offsetAlongNormal != 0d)
{
posVec += Vec3.Normalize(normalVec) * (float)offsetAlongNormal;
}
v.Position = posVec;
v.Normal = normalVec;
v.Tangent = Vec3.TransformNormal(v.Tangent, m);
return(v);
}
private long VertexHashCode(Kn5Node.Vertex v)
{
long r = v.Position.GetHashCode();
if (_considerNormal)
{
r = (r * 397) ^ v.Normal.GetHashCode();
}
if (_considerTexCoords)
{
r = (r * 397) ^ v.Tex.GetHashCode();
}
return(r);
}
public void AddVertex(Kn5Node.Vertex v)
{
if (_vertices.Count >= 65536)
{
throw new Exception("Limit exceeded");
}
var hash = VertexHashCode(v);
if (_knownVertices.TryGetValue(hash, out var knownIndex))
{
_indices.Add(knownIndex);
}
else
{
var newIndex = (ushort)_vertices.Count;
_indices.Add(newIndex);
_knownVertices[hash] = newIndex;
_vertices.Add(v);
}
}
private static void FixVertice(ref Kn5Node.Vertex v, Vector3 normalToSet)
{
v.Normal[0] = normalToSet.X;
v.Normal[1] = normalToSet.Y;
v.Normal[2] = normalToSet.Z;
}
private static void FixVertice(ref Kn5Node.Vertex v, Vector3 normalToSet)
{
v.Normal.X = normalToSet.X;
v.Normal.Y = normalToSet.Y;
v.Normal.Z = normalToSet.Z;
}
