@NotNull
public static IndexedCollection<Double> ofDouble(@NotNull Collection<Double> intCollection) {
DoubleBuffer vals = DoubleBuffer.allocate(intCollection.size());
intCollection.forEach(vals::put);
vals.flip();
return new DoubleBufferCollection(vals);
}
public static DoubleBuffer planeEquation(
double x1,
double y1,
double z1,
double x2,
double y2,
double z2,
double x3,
double y3,
double z3) {
double[] eq = new double[4];
eq[0] = y1 * (z2 - z3) + y2 * (z3 - z1) + y3 * (z1 - z2);
eq[1] = z1 * (x2 - x3) + z2 * (x3 - x1) + z3 * (x1 - x2);
eq[2] = x1 * (y2 - y3) + x2 * (y3 - y1) + x3 * (y1 - y2);
eq[3] = -(x1 * (y2 * z3 - y3 * z2) + x2 * (y3 * z1 - y1 * z3) + x3 * (y1 * z2 - y2 * z1));
DoubleBuffer b = BufferUtils.createDoubleBuffer(8).put(eq);
b.flip();
return b;
}