void Alterneigh(int rad, int i, int b, int g, int r)
{
int j, k, lo, hi, a, m;
int[] p;
lo = i - rad;
if (lo < -1)
lo = -1;
hi = i + rad;
if (hi > netsize)
hi = netsize;
j = i + 1;
k = i - 1;
m = 1;
while ((j < hi) || (k > lo)) {
a = radpower [m++];
if (j < hi) {
p = network [j++];
p [0] -= (a * (p [0] - b)) / alpharadbias;
p [1] -= (a * (p [1] - g)) / alpharadbias;
p [2] -= (a * (p [2] - r)) / alpharadbias;
}
if (k > lo) {
p = network [k--];
p [0] -= (a * (p [0] - b)) / alpharadbias;
p [1] -= (a * (p [1] - g)) / alpharadbias;
p [2] -= (a * (p [2] - r)) / alpharadbias;
}
}
}