private InstancedModel GenerateAtomModel(Atom atom, Matrix matrix)
{
List<OptionalDataBuffer> list = new List<OptionalDataBuffer>(){GenerateColorBuffer(atom)};
return new InstancedModel(GetAtomMesh(), matrix, list);
}
private ColorBuffer GenerateColorBuffer(Atom atom)
{
var N_VERTICES = (ATOM_STACKS + 1) * ATOM_SLICES;
List<Vector3> colors = new List<Vector3>();
for (int i = 0; i < N_VERTICES; i++) colors.Add(atom.Color);
colors.Add(atom.Color);
var vertices = GetAtomMesh().GetVertices();
for (int j = 0; j < N_VERTICES; j++)
{
float distance = GetMagnitude(vertices[j] - ATOM_LIGHT_POSITION);
float scaledDistance = distance / ATOM_LIGHT_POWER;
Vector3 luminosity = ATOM_LIGHT_COLOR * (1 - scaledDistance);
if (luminosity.X > 0 && luminosity.Y > 0 && luminosity.Z > 0)
colors[j] += luminosity;
}
return new ColorBuffer(colors);
}
private Matrix GenerateAtomMatrix(Vector3 position, Atom atom)
{
var matrix = Matrix.Translation(position);
var shellCount = new Vector3(atom.ElectronShellCount);
return Matrix.Scaling(new Vector3(ATOM_SCALE) * shellCount) * matrix;
}