/// <summary>
/// Sends the vertices in a given quadtree of material information to the specified iterators.
/// </summary>
public static void SendQuadtree <R>(Quadtree <Material> Source, Axis PlaneAxis, int PlaneLevel, Point <int> Offset,
IIterator <ColorNormalVertex, R> Positive, IIterator <ColorNormalVertex, R> Negative)
{
Material val;
if (Source.Homogenous(out val))
{
IMaterial m = val.Description;
if (m != null)
{
int s = Source.Size;
ITileableMaterial tm = m as ITileableMaterial;
if (tm != null)
{
Vector <double> normal;
var proj = Material.Project(PlaneAxis, val.Direction, PlaneLevel, new Point <int>(Offset.X, Offset.Y), new Point <int>(s, s), out normal);
Send(tm.CreateTileableRenderable(proj, normal, new Point <int>(s, s)), val.Direction == Polarity.Positive ? Positive : Negative);
}
else
{
for (int x = 0; x < s; x++)
{
for (int y = 0; y < s; y++)
{
Vector <double> normal;
var proj = Material.Project(PlaneAxis, val.Direction, PlaneLevel, new Point <int>(x + Offset.X, y + Offset.Y), new Point <int>(1, 1), out normal);
Send(m.CreateRenderable(proj, normal), val.Direction == Polarity.Positive ? Positive : Negative);
}
}
}
}
}
else
{
int hs = 1 << (Source.Depth - 1);
for (int x = 0; x < 2; x++)
{
for (int y = 0; y < 2; y++)
{
SendQuadtree(Source[x * 2 + y], PlaneAxis, PlaneLevel, new Point <int>(Offset.X + x * hs, Offset.Y + y * hs), Positive, Negative);
}
}
}
}
