/// <summary>
/// Handles mouse-wheel change.
/// </summary>
/// <returns>True if handled.</returns>
public override bool MouseWheel(MouseEventArgs e)
{
float dZoom = e.Delta / 120.0f;
Zoom *= (float)Math.Pow(1.04, dZoom);
// zoom bounds:
Zoom = Arith.Clamp(Zoom, MinZoom, MaxZoom);
return(true);
}
/// <summary>
/// Deterministic restart of a sequence.
/// </summary>
/// <param name="ij">Random seed #1 [0,31328]</param>
/// <param name="kl">Random seed #2 [0,30081]</param>
public void Reset(int ij, int kl)
{
double s, t;
int i, j, k, l, m;
int ii, jj;
ij = Arith.Clamp(ij, 0, 31328);
kl = Arith.Clamp(kl, 0, 30081);
Ok = true;
i = ((ij / 177) % 177) + 2;
j = (ij % 177) + 2;
k = ((kl / 169) % 178) + 1;
l = (kl % 169);
for (ii = 0; ii < 97; ii++)
{
s = 0.0;
t = 0.5;
for (jj = 0; jj++ < 24;)
{
m = ((i * j % 179) * k) % 179;
i = j;
j = k;
k = m;
l = (53 * l + 1) % 169;
if (l * m % 64 >= 32)
{
s += t;
}
t *= 0.5;
}
u[ii] = s;
}
c = 362436.0 / 16777216.0;
cd = 7654321.0 / 16777216.0;
cm = 16777213.0 / 16777216.0;
i97 = 96;
j97 = 32;
}