The methods for this operator have not been implemented in this
commit

@@ -2790,0 +2806,4 @@
+          luvmap.append(BM_ELEM_CD_GET_FLOAT_P(l, offsets.uv));
+        }
+      }
+      /*Filter out luv pointers who are not within threshold

@@ -2790,0 +2881,4 @@
+  return OPERATOR_FINISHED;
+}
+
+void UV_OT_stitch_distance(wmOperatorType *ot)

@@ -2790,0 +2808,4 @@
+      }
+      /*Filter out luv pointers who are not within threshold
+      distance of another selected loop from same vertex*/
+      auto outer = luvmap.begin();

@@ -2790,0 +2828,4 @@
+        }
+        if (!keep) {
+          int outerIndex = std::distance(luvmap.begin(), outer);
+          luvmap.remove(outerIndex);

@@ -815,0 +859,4 @@
+          centeruv = i;
+        }
+      }
+      /*Filter UV coordinates that are not within threshold distance of central UV*/

@@ -814,0 +824,4 @@
+  /* Since we are using len_squared_v2v2 to calculate distance, we need to square the
+   * user-defined threshold*/
+  float threshold = RNA_float_get(op->ptr, "threshold");
+  threshold = threshold * threshold;

@@ -814,0 +838,4 @@
+        blender::Vector<float *> luvmap;
+
+        /*Grap all luv pointers from selected loops*/
+        BM_ITER_ELEM (l, &liter, v, BM_LOOPS_OF_VERT) {

@@ -814,0 +843,4 @@
+            luvmap.append(BM_ELEM_CD_GET_FLOAT_P(l, offsets.uv));
+          }
+        }
+        if (luvmap.size() == 0) {

@@ -814,0 +847,4 @@
+          break;
+        }
+
+        /*Find the central UV coordinate*/

@@ -814,0 +848,4 @@
+        }
+
+        /*Find the central UV coordinate*/
+        std::vector<float> sum(2, 0.0f);

@@ -815,0 +828,4 @@
+  /* Since we are using len_squared_v2v2 to calculate distance, we need to square the
+   * user-defined threshold*/
+
+  float threshold = RNA_float_get(op->ptr, "threshold");

@@ -815,0 +837,4 @@
+    BMLoop *l;
+    BMIter viter, liter;
+    BM_ITER_MESH (v, &viter, em->bm, BM_VERTS_OF_MESH) {
+      blender::Vector<float *> luvmap;

@@ -815,0 +849,4 @@
+
+      while (luvmap.size() > 1) {
+        blender::float2 cent = {0.0f, 0.0f};
+        for (auto &luv : luvmap) {

@@ -815,0 +856,4 @@
+        cent[0] /= luvmap.size();
+        cent[1] /= luvmap.size();
+
+        /*Find the loop closest to the cent coordinate. This loop will be the base that all

@@ -815,0 +862,4 @@
+        float mindist = len_squared_v2v2(cent, luvmap[0]);
+        float *center = luvmap[0];
+        int centerindex = 0;
+        for (int i = 0; i < luvmap.size(); i++) {

@@ -815,0 +873,4 @@
+        float *tmp = center;
+        luvmap[centerindex] = luvmap[luvmap.size() - 1];
+        luvmap[luvmap.size() - 1] = tmp;
+        blender::float2 sum = {center[0], center[1]};

@@ -815,0 +879,4 @@
+
+        int i = 0;
+        int mergesection = 1;
+        while (luvmap[i] != center and i < luvmap.size() - mergesection) {

@@ -815,0 +880,4 @@
+        int i = 0;
+        int mergesection = 1;
+        while (luvmap[i] != center and i < luvmap.size() - mergesection) {
+          float dist = len_squared_v2v2(center, luvmap[i]);

@@ -815,0 +884,4 @@
+          if (dist < threshold_sq) {
+            sum[0] += luvmap[i][0];
+            sum[1] += luvmap[i][1];
+            float *tmp = luvmap[i];

@@ -815,0 +898,4 @@
+         * from luvmap.*/
+
+        if (mergesection > 1) {
+          blender::float2 midpoint = {0.0f, 0.0f};

@@ -815,0 +912,4 @@
+        luvmap.resize(luvmap.size() - mergesection);
+      }
+    }
+    uvedit_live_unwrap_update(sima, scene, obedit);

@@ -815,0 +841,4 @@
+    luvmapvector.reserve(32);
+    bool changed = false;
+    BM_ITER_MESH (v, &viter, em->bm, BM_VERTS_OF_MESH) {
+