public static int M8By8FloatOffset(this int lhs, double xOff, double yOff)
{
var typed = new _M8By8(lhs);
var valueX = (typed.ValueX.M8ToDouble() + xOff).AsM8();
var valueY = (typed.ValueY.M8ToDouble() + yOff).AsM8();
return (valueX << Bits) + valueY;
}
public static int[] ToCornersOnM8By8(this int index)
{
var typed = new _M8By8(index);
var upLeft = new _M8By8((typed.ValueX - 1).AsM8(), (typed.ValueY - 1).AsM8());
var upRight = new _M8By8((typed.ValueX + 1).AsM8(), (typed.ValueY - 1).AsM8());
var lowLeft = new _M8By8((typed.ValueX - 1).AsM8(), (typed.ValueY + 1).AsM8());
var lowRight = new _M8By8((typed.ValueX + 1).AsM8(), (typed.ValueY + 1).AsM8());
return new[] { upLeft.Index, upRight.Index, lowLeft.Index, lowRight.Index };
}
public static int[] ToSidesOnM8By8(this int index)
{
var typed = new _M8By8(index);
var top = new _M8By8(typed.ValueX, typed.ValueY - 1);
var right = new _M8By8(typed.ValueX + 1, typed.ValueY);
var bottom = new _M8By8(typed.ValueX, typed.ValueY + 1);
var left = new _M8By8(typed.ValueX - 1, typed.ValueY);
return new[] { top.Index, right.Index, bottom.Index, left.Index };
}
public static int[] ToPerimeterOnM8By8(this int index)
{
var typed = new _M8By8(index);
var top = new _M8By8(typed.ValueX, typed.ValueY - 1);
var right = new _M8By8(typed.ValueX + 1, typed.ValueY);
var bottom = new _M8By8(typed.ValueX, typed.ValueY + 1);
var left = new _M8By8(typed.ValueX - 1, typed.ValueY);
var upLeft = new _M8By8((typed.ValueX - 1).AsM8(), (typed.ValueY - 1).AsM8());
var upRight = new _M8By8((typed.ValueX + 1).AsM8(), (typed.ValueY - 1).AsM8());
var lowLeft = new _M8By8((typed.ValueX - 1).AsM8(), (typed.ValueY + 1).AsM8());
var lowRight = new _M8By8((typed.ValueX + 1).AsM8(), (typed.ValueY + 1).AsM8());
return new[] { top.Index, right.Index, bottom.Index, left.Index, upLeft.Index, upRight.Index, lowLeft.Index, lowRight.Index };
}
static void MakeForceField()
{
forceField[0] = new[] { 0.0f, 0.0f, 0.0f };
for (var i = 1; i < Mod; i++)
{
var typed = new _M8By8(i);
var distance = Math.Sqrt(typed.ValueX.M8ToDouble() * typed.ValueX.M8ToDouble() + typed.ValueY.M8ToDouble() * typed.ValueY.M8ToDouble());
forceField[i] = new[] { (float)distance, (float)(typed.ValueX.M8ToDouble() / distance), (float)(typed.ValueY.M8ToDouble() / distance) };
}
}
