@Test
public void testLineSegmentsOnEmptyPointSequence() {
PointSequenceBuilder builder = new FixedSizePointSequenceBuilder(0, DimensionalFlag.XYZM);
PointSequence sequence = builder.toPointSequence();
for (LineSegment ls : new LineSegments(sequence)) {
fail();
}
}
private CoordinateSequence fromCoordinateArray(Coordinate[] coordinates, DimensionalFlag dim) {
PointSequenceBuilder builder = PointSequenceBuilders.fixedSized(coordinates.length, dim);
double[] ordinates = new double[dim.getCoordinateDimension()];
for (Coordinate co : coordinates) {
copy(co, ordinates, dim);
builder.add(ordinates);
}
return (CoordinateSequence) builder.toPointSequence();
}
@Test
public void testLineSegments() {
PointSequenceBuilder builder = new FixedSizePointSequenceBuilder(3, DimensionalFlag.XYZM);
builder.add(new double[] {1, 1, 1, 1});
builder.add(new double[] {2, 2, 2, 2});
builder.add(new double[] {3, 3, 3, 3});
PointSequence sequence = builder.toPointSequence();
int cnt = 0;
double startX = 1.0d;
for (LineSegment ls : new LineSegments(sequence)) {
assertEquals(startX, ls.getStartPoint().getX(), Math.ulp(1.0d));
startX = ls.getEndPoint().getX();
cnt++;
}
assertEquals(2, cnt);
}
