public bool Contains(ref IntVector3 point)
{
int x = MathExtension.Abs(point.X);
int y = MathExtension.Abs(point.Y);
int z = MathExtension.Abs(point.Z);
return((x + y + z) <= Level);
}
public void ForEach(RefAction <IntVector3> action, int startLevel)
{
if (action == null)
{
throw new ArgumentNullException("action");
}
if (startLevel < 0 || Level < startLevel)
{
throw new ArgumentOutOfRangeException("startLevel");
}
if (Level < 0)
{
throw new InvalidOperationException("Invalid value: Level");
}
var point = new IntVector3();
int x = 0;
int y = 0;
int z = 0;
int currentLevel = startLevel;
x = -currentLevel;
while (currentLevel <= Level)
{
point.X = Center.X + x;
point.Y = Center.Y + y;
point.Z = Center.Z + z;
action(ref point);
if (z < 0)
{
z *= -1;
}
else if (y < 0)
{
y *= -1;
z = -(currentLevel - MathExtension.Abs(x) - MathExtension.Abs(y));
}
else
{
y = -y + 1;
if (0 < y)
{
if (++x <= currentLevel)
{
y = MathExtension.Abs(x) - currentLevel;
z = 0;
}
else
{
currentLevel++;
x = -currentLevel;
y = 0;
z = 0;
}
}
else
{
z = -(currentLevel - MathExtension.Abs(x) - MathExtension.Abs(y));
}
}
}
}