public GreatArcPath build()

in commons-geometry-spherical/src/main/java/org/apache/commons/geometry/spherical/twod/GreatArcPath.java [513:551]

• 28 lines of code
• 9 McCabe index (conditional complexity)

        public GreatArcPath build(final boolean close) {
            if (close) {
                closePath();
            }

            // combine all of the arcs
            List<GreatArc> result = null;

            if (prependedArcs != null) {
                result = prependedArcs;
                Collections.reverse(result);
            }

            if (appendedArcs != null) {
                if (result == null) {
                    result = appendedArcs;
                } else {
                    result.addAll(appendedArcs);
                }
            }

            if (result == null) {
                result = Collections.emptyList();
            }

            if (result.isEmpty() && startVertex != null) {
                throw new IllegalStateException(
                        MessageFormat.format("Unable to create path; only a single point provided: {0}",
                                startVertex));
            }

            // clear internal state
            appendedArcs = null;
            prependedArcs = null;

            // build the final path instance, using the shared empty instance if
            // no arcs are present
            return result.isEmpty() ? empty() : new GreatArcPath(result);
        }