iverase commented on a change in pull request #726: LUCENE-8632: New XYShape
Field and Queries for indexing and searching general cartesian geometries
URL: https://github.com/apache/lucene-solr/pull/726#discussion_r299802571
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File path: lucene/sandbox/src/java/org/apache/lucene/geo/Tessellator.java
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@@ -142,6 +183,27 @@ private static final Node createDoublyLinkedList(final
Polygon polygon, int star
return filterPoints(lastNode, null);
}
+ private static final Node eliminateHoles(final XYPolygon polygon, Node
outerNode) {
+ // Define a list to hole a reference to each filtered hole list.
+ final List<Node> holeList = new ArrayList<>();
+ // keep a reference to the hole
+ final Map<Node, XYPolygon> holeListPolygons = new HashMap<>();
+ // Iterate through each array of hole vertices.
+ XYPolygon[] holes = polygon.getHoles();
+ int nodeIndex = polygon.numPoints() ;
+ for(int i = 0; i < polygon.numHoles(); ++i) {
+ // create the doubly-linked hole list
+ Node list = createDoublyLinkedList(holes[i].getPolyX(),
holes[i].getPolyY(), holes[i].getWindingOrder(), false, nodeIndex,
WindingOrder.CCW);
+ // Determine if the resulting hole polygon was successful.
+ if(list != null) {
+ // Add the leftmost vertex of the hole.
+ holeList.add(fetchLeftmost(list));
+ }
Review comment:
You need to populate here `holeListPolygons` or you get an NPE downstream
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