v0.2.52..v0.2.53 changeset LineTest.js

diff --git a/rules/test/LineTest.js b/rules/test/LineTest.js
new file mode 100644
index 0000000..766e291
--- /dev/null
+++ b/rules/test/LineTest.js
@@ -0,0 +1,107 @@
+/**
+ * This is used by ScriptMatchTest. 
+ *
+ * TODO: Could we use Line.js instead?
+ */
+
+"use strict";
+
+exports.candidateDistanceSigma = 1.0; // 1.0 * (CE95 + Worst CE95);
+exports.description = "Line String Generic Test";
+// This matcher only sets match/miss/review values to 1.0, therefore score thresholds aren't used. If that
+// ever changes, then custom score threshold configuration options should be added for this matcher.
+//exports.matchThreshold = parseFloat(hoot.get("conflate.match.threshold.default"));
+//exports.missThreshold = parseFloat(hoot.get("conflate.match.threshold.default"));
+//exports.reviewThreshold = parseFloat(hoot.get("conflate.match.threshold.default"))
+exports.searchRadius = parseFloat(hoot.get("search.radius.generic.line"));
+exports.baseFeatureType = "Line";
+exports.geometryType = "line";
+
+var angleHistogramExtractor = new hoot.AngleHistogramExtractor();
+var weightedShapeDistanceExtractor = new hoot.WeightedShapeDistanceExtractor();
+var sublineMatcher = new hoot.MaximalSublineStringMatcher({
+    "way.matcher.max.angle": hoot.get("generic.line.matcher.max.angle"),
+    "way.subline.matcher": hoot.get("generic.line.subline.matcher")});
+
+/**
+ * Returns true if e is a candidate for a match. Implementing this method is
+ * optional, but may dramatically increase speed if you can cull some features
+ * early on. E.g. no need to check nodes for a polygon to polygon match.
+ *
+ * exports.matchCandidateCriterion takes precedence over this function and must
+ * be commented out before using it.
+ */
+exports.isMatchCandidate = function(map, e)
+{
+  return isLinear(e);
+};
+
+/**
+ * If this function returns true then all overlapping matches will be treated
+ * as a group. For now that means if two matches overlap then the whole group
+ * will be marked as needing review.
+ *
+ * If this function returns false the conflation routines will attempt to 
+ * pick the best subset of matches that do not conflict.
+ */
+exports.isWholeGroup = function() 
+{
+  return false;
+};
+
+/**
+ * Returns the match score for the three class relationships.
+ * - match
+ * - miss
+ * - review
+ *
+ * The scores should always sum to one. If they don't you will be taunted 
+ * mercilessly and we'll normalize it anyway. :P
+ */
+exports.matchScore = function(map, e1, e2) 
+{
+  var result = { miss: 1.0 };
+
+  // extract the sublines needed for matching
+  var sublines = sublineMatcher.extractMatchingSublines(map, e1, e2);
+
+  if (sublines)
+  {
+    var m = sublines.map;
+    var m1 = sublines.match1;
+    var m2 = sublines.match2;
+    var angleHistogramValue = angleHistogramExtractor.extract(m, m1, m2);
+    var weightedShapeDistanceValue = weightedShapeDistanceExtractor.extract(m, m1, m2);
+
+    if (angleHistogramValue > 0.63 && weightedShapeDistanceValue > 0.9)
+    {
+      result = { match: 1.0 };
+    }
+  }
+
+  return result;
+};
+
+/**
+ * The internals of geometry merging can become quite complex. Typically this 
+ * method will simply call another hoot method to perform the appropriate
+ * merging of geometries.
+ *
+ * If this method is exported then the mergePair method should not be exported.
+ *
+ * @param map The map that is being conflated
+ * @param pairs An array of ElementId pairs that will be merged.
+ * @param replaced An empty array is passed in, the method should fill the array
+ *      with all the replacements that occur during the merge process (e.g. if
+ *      two elements (way:1 & way:2) are merged into one element (way:3), then
+ *      the replaced array should contain [[way:1, way:3], [way:1, way:3]]
+ *      where all the "way:*" objects are of the ElementId type.
+ */
+exports.mergeSets = function(map, pairs, replaced) 
+{
+  // snap the ways in the second input to the first input. Use the default tag
+  // merge method.
+  var result = snapWays(sublineMatcher, map, pairs, replaced, exports.baseFeatureType);
+  return result;
+};
+