com.vividsolutions.jts.noding

Class IteratedNoder

  • All Implemented Interfaces:
    Noder 

    public class IteratedNoder
extends Object
implements Noder
    Nodes a set of NodedSegmentStrings completely. The set of segment strings is fully noded; i.e. noding is repeated until no further intersections are detected.

    Iterated noding using a FLOATING precision model is not guaranteed to converge, due to roundoff error. This problem is detected and an exception is thrown. Clients can choose to rerun the noding using a lower precision model.

    • Method Detail

      • setMaximumIterations

        public void setMaximumIterations(int maxIter)
        Sets the maximum number of noding iterations performed before the noding is aborted. Experience suggests that this should rarely need to be changed from the default. The default is MAX_ITER.
        Parameters:
        maxIter - the maximum number of iterations to perform

      • getNodedSubstrings

        public Collection getNodedSubstrings()
        Description copied from interface: Noder
        Returns a Collection of fully noded SegmentStrings. The SegmentStrings have the same context as their parent.
        Specified by:
        getNodedSubstrings in interface  Noder
        Returns:
        a Collection of SegmentStrings

      • computeNodes

        public void computeNodes(Collection segStrings)
                  throws TopologyException
        Fully nodes a list of SegmentStrings, i.e. peforms noding iteratively until no intersections are found between segments. Maintains labelling of edges correctly through the noding.
        Specified by:
        computeNodes in interface  Noder
        Parameters:
        segStrings - a collection of SegmentStrings to be noded
        Throws:
        TopologyException - if the iterated noding fails to converge.