I have detected the same robustness problem with LocationIndexedLine.
I have solved this with this modification to LocationIndexOfPoint:
private LinearLocation indexOfFromStart(Coordinate inputPt, LinearLocation
minIndex)
{
double minDistance = Double.MAX_VALUE;
int minComponentIndex = 0;
int minSegmentIndex = 0;
double minFrac = -1.0;
LineSegment seg = new LineSegment();
for (LinearIterator it = new LinearIterator(linearGeom);
it.hasNext(); it.next()) {
if (! it.isEndOfLine()) {
seg.p0 = it.getSegmentStart();
seg.p1 = it.getSegmentEnd();
double segDistance = seg.distance(inputPt);
/*
* Changes to LocationIndexedLine to avoid robustness problems
* */
PrecisionModel pm = linearGeom.getPrecisionModel();
segDistance = pm.makePrecise(segDistance);
So If the developer use geometries with a fixed precision model, this
problems could be avoided...
It works with my requeriments (probably Im missing something)
Best regards!
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