private static void applyLhs(final float[][][] x, final float[][][] y) {
final int n3 = x.length;
Parallel.loop(
1,
n3,
2,
new Parallel.LoopInt() { // i3 = 1, 3, 5, ...
public void compute(int i3) {
applyLhsSlice3(i3, x, y);
}
});
Parallel.loop(
2,
n3,
2,
new Parallel.LoopInt() { // i3 = 2, 4, 6, ...
public void compute(int i3) {
applyLhsSlice3(i3, x, y);
}
});
}
public float[][][] findScreenPoints(
final float smin,
final float[][][] ss,
final float[][][] u1,
final float[][][] u2,
final float[][][] u3) {
final int n3 = ss.length;
final int n2 = ss[0].length;
final int n1 = ss[0][0].length;
final Sampling s1 = new Sampling(n1);
final Sampling s2 = new Sampling(n2);
final Sampling s3 = new Sampling(n3);
final float[][][] mk = new float[n3][n2][n1];
final SincInterpolator si = new SincInterpolator();
si.setExtrapolation(SincInterpolator.Extrapolation.CONSTANT);
Parallel.loop(
1,
n3 - 1,
new Parallel.LoopInt() {
public void compute(int i3) {
for (int i2 = 1; i2 < n2 - 1; ++i2) {
for (int i1 = 1; i1 < n1 - 1; ++i1) {
float sxi = ss[i3][i2][i1];
float u1i = u1[i3][i2][i1] * 2f;
float u2i = u2[i3][i2][i1] * 2f;
float u3i = u3[i3][i2][i1] * 2f;
float x1m = i1 - u1i;
float x2m = i2 - u2i;
float x3m = i3 - u3i;
float x1p = i1 + u1i;
float x2p = i2 + u2i;
float x3p = i3 + u3i;
float sxm = si.interpolate(s1, s2, s3, ss, x1m, x2m, x3m);
float sxp = si.interpolate(s1, s2, s3, ss, x1p, x2p, x3p);
if (sxi > sxm && sxi > sxp && sxi > smin) mk[i3][i2][i1] = sxi;
}
}
}
});
return mk;
}
