isValid method
Tests whether this location refers to a valid location on the given linear {@link Geometry}.
@param linearGeom a linear geometry @return true if this location is valid
Implementation
bool isValid(Geometry linearGeom) {
if (componentIndex < 0 || componentIndex >= linearGeom.getNumGeometries())
return false;
LineString lineComp = linearGeom.getGeometryN(componentIndex) as LineString;
if (segmentIndex < 0 || segmentIndex > lineComp.getNumPoints())
return false;
if (segmentIndex == lineComp.getNumPoints() && segmentFraction != 0.0)
return false;
if (segmentFraction < 0.0 || segmentFraction > 1.0) return false;
return true;
}