/**
* Returns a composed {@link ToFloatBiFunction} that first applies the {@code before} functions to
* its input, and then applies this function to the result. If evaluation of either operation
* throws an exception, it is relayed to the caller of the composed operation.
*
* @param <A> The type of the argument to the first given function, and of composed function
* @param <B> The type of the argument to the second given function, and of composed function
* @param before1 The first function to apply before this function is applied
* @param before2 The second function to apply before this function is applied
* @return A composed {@code ToFloatBiFunction} that first applies the {@code before} functions to
* its input, and then applies this function to the result.
* @throws NullPointerException If given argument is {@code null}
* @implSpec The input argument of this method is able to handle every type.
*/
@Nonnull
default <A, B> ToFloatBiFunction<A, B> compose(
@Nonnull final Function<? super A, ? extends T> before1,
@Nonnull final ToDoubleFunction<? super B> before2) {
Objects.requireNonNull(before1);
Objects.requireNonNull(before2);
return (a, b) -> applyAsFloat(before1.apply(a), before2.applyAsDouble(b));
}
private <E extends RuntimeException> void assertToDoubleFunction(
ToDoubleFunction<Object> test, Class<E> type) {
assertNotNull(test);
try {
test.applyAsDouble(null);
fail();
} catch (RuntimeException e) {
assertException(type, e, "null");
}
try {
Stream.of("1", "2", "3").mapToDouble(test);
} catch (RuntimeException e) {
assertException(type, e, "a");
}
}
@Override
public PolygonIntegrateUnit apply(MFEdge edge) {
MFCell cell = edge.getCell();
if (cell.vertesSize() != 3) {
throw new IllegalArgumentException();
}
double[] vertesLevels = new double[3];
int negativeVertesNum = 0;
for (int i = 0; i < vertesLevels.length; i++) {
double lv = levelFunction.applyAsDouble(cell.getVertexCoord(i));
if (lv < 0) {
negativeVertesNum++;
}
vertesLevels[i] = lv;
}
if (negativeVertesNum == 0) {
return null;
}
int firstInsideIndex = -1;
for (int i = 0; i < vertesLevels.length; i++) {
if (vertesLevels[i] < 0 && vertesLevels[(i + 2) % 3] >= 0) {
firstInsideIndex = i;
break;
}
}
double[][] polygonVertesCoords = new double[2 + negativeVertesNum][];
polygonVertesCoords[0] = edge.getStartCoord();
polygonVertesCoords[1] = edge.getEndCoord();
for (int i = 0; i < negativeVertesNum; i++) {
polygonVertesCoords[2 + i] = cell.getVertexCoord((firstInsideIndex + i) % 3);
}
PolygonIntegrateUnit result = new PolygonIntegrateUnit();
result.setVertesCoords(polygonVertesCoords);
return result;
}
/**
* Returns a composed {@link Predicate2} that first applies the {@code before} function to its
* input, and then applies this predicate to the result. If evaluation of either operation throws
* an exception, it is relayed to the caller of the composed operation.
*
* @param <A> The type of the argument to the given function, and of composed predicate
* @param before The function to apply before this predicate is applied
* @return A composed {@code Predicate2} that first applies the {@code before} function to its
* input, and then applies this predicate to the result.
* @throws NullPointerException If given argument is {@code null}
* @implSpec The input argument of this method is able to handle every type.
*/
@Nonnull
default <A> Predicate2<A> compose(@Nonnull final ToDoubleFunction<? super A> before) {
Objects.requireNonNull(before);
return (a) -> test(before.applyAsDouble(a));
}