From 99d957ea185c3641e407b73a757bc9e2b5673686 Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <dbr4@psu.edu>
Date: Mon, 17 Jul 2023 13:50:42 -0400
Subject: VPTree: changed Point format to a D-dimensional point.

---
 include/framework/RecordInterface.h | 30 ++++++++++++++++++++++++------
 tests/vptree_tests.cpp              | 12 ++++++------
 2 files changed, 30 insertions(+), 12 deletions(-)

diff --git a/include/framework/RecordInterface.h b/include/framework/RecordInterface.h
index ab4c6f9..a3f6814 100644
--- a/include/framework/RecordInterface.h
+++ b/include/framework/RecordInterface.h
@@ -100,22 +100,40 @@ struct WeightedRecord {
     }
 };
 
-template <typename V>
+template <typename V, size_t D=2>
 struct Point{
-    V x;
-    V y;
+    V data[D];
 
     inline bool operator==(const Point& other) const {
-        return x == other.x && y == other.y;
+        for (size_t i=0; i<D; i++) {
+            if (data[i] != other.data[i]) {
+                return false;
+            }
+        }
+
+        return true;
     }
 
     // lexicographic order
     inline bool operator<(const Point& other) const {
-        return x < other.x || (x == other.x && y < other.y);
+        for (size_t i=0; i<D; i++) {
+            if (data[i] < other.data[i]) {
+                return true;
+            } else if (data[i] > other.data[i]) {
+                return false;
+            }
+        }
+
+        return false;
     }
 
     inline double calc_distance(const Point& other) const {
-        return sqrt(pow(x - other.x, 2) + pow(y - other.y, 2));
+        double dist = 0;
+        for (size_t i=0; i<D; i++) {
+            dist += pow(data[i] - other.data[i], 2);
+        }
+        
+        return sqrt(dist);
     }
 };
 
diff --git a/tests/vptree_tests.cpp b/tests/vptree_tests.cpp
index 7c35a58..b86e1e9 100644
--- a/tests/vptree_tests.cpp
+++ b/tests/vptree_tests.cpp
@@ -74,13 +74,13 @@ START_TEST(t_point_lookup)
     for (size_t i=0; i<n; i++) {
         PRec r;
         auto rec = (buffer->get_data() + i);
-        r.x = rec->rec.x;
-        r.y = rec->rec.y;
+        r.data[0] = rec->rec.data[0];
+        r.data[1] = rec->rec.data[1];
 
         auto result = wss.point_lookup(r);
         ck_assert_ptr_nonnull(result);
-        ck_assert_int_eq(result->rec.x, r.x);
-        ck_assert_int_eq(result->rec.y, r.y);
+        ck_assert_int_eq(result->rec.data[0], r.data[0]);
+        ck_assert_int_eq(result->rec.data[1], r.data[1]);
     }
 
     delete buffer;
@@ -97,8 +97,8 @@ START_TEST(t_point_lookup_miss)
 
     for (size_t i=n + 100; i<2*n; i++) {
         PRec r;
-        r.x = i;
-        r.y = i;
+        r.data[0] = i;
+        r.data[1] = i;
 
         auto result = wss.point_lookup(r);
         ck_assert_ptr_null(result);
-- 
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