Refactor getMiddlePoint function to getCloseToEdgePoint

modules/burgs-and-states.js

@@ -131,9 +131,8 @@ window.BurgsAndStates = (() => {
       while (burgsAdded < burgsNumber && spacing > 1) {
         for (let i = 0; burgsAdded < burgsNumber && i < sorted.length; i++) {
           if (cells.burg[sorted[i]]) continue;
-          const cell = sorted[i],
+          const cell = sorted[i];
-            x = cells.p[cell][0],
+          const [x, y] = cells.p[cell];
-            y = cells.p[cell][1];
           const s = spacing * gauss(1, 0.3, 0.2, 2, 2); // randomize to make placement not uniform
           if (burgsTree.find(x, y, s) !== undefined) continue; // to close to existing burg
           const burg = burgs.length;
@@ -181,7 +180,7 @@ window.BurgsAndStates = (() => {
 
       if (b.port) {
         b.population = b.population * 1.3; // increase port population
-        const [x, y] = getMiddlePoint(i, haven);
+        const [x, y] = getCloseToEdgePoint(i, haven);
         b.x = x;
         b.y = y;
       }
@@ -222,6 +221,23 @@ window.BurgsAndStates = (() => {
     TIME && console.timeEnd("specifyBurgs");
   };
 
+  function getCloseToEdgePoint(cell1, cell2) {
+    const {cells, vertices} = pack;
+
+    const [x0, y0] = cells.p[cell1];
+
+    const commonVertices = cells.v[cell1].filter(vertex => vertices.c[vertex].some(cell => cell === cell2));
+    const [x1, y1] = vertices.p[commonVertices[0]];
+    const [x2, y2] = vertices.p[commonVertices[1]];
+    const xEdge = (x1 + x2) / 2;
+    const yEdge = (y1 + y2) / 2;
+
+    const x = rn(x0 + 0.95 * (xEdge - x0), 2);
+    const y = rn(y0 + 0.95 * (yEdge - y0), 2);
+
+    return [x, y];
+  }
+
   const getType = (i, port) => {
     const cells = pack.cells;
     if (port) return "Naval";

modules/submap.js

@@ -395,7 +395,7 @@ window.Submap = (function () {
           return;
         }
         DEBUG && console.info(`Moving ${b.name} from ${cityCell} to ${newCell} near ${neighbor}.`);
-        [b.x, b.y] = b.port ? getMiddlePoint(newCell, neighbor) : cells.p[newCell];
+        [b.x, b.y] = b.port ? getCloseToEdgePoint(newCell, neighbor) : cells.p[newCell];
         if (b.port) b.port = cells.f[neighbor]; // copy feature number
         b.cell = newCell;
         if (b.port && !isWater(pack, neighbor)) console.error("betrayal! negihbor must be water!", b);
@@ -407,6 +407,23 @@ window.Submap = (function () {
     });
   }
 
+  function getCloseToEdgePoint(cell1, cell2) {
+    const {cells, vertices} = pack;
+
+    const [x0, y0] = cells.p[cell1];
+
+    const commonVertices = cells.v[cell1].filter(vertex => vertices.c[vertex].some(cell => cell === cell2));
+    const [x1, y1] = vertices.p[commonVertices[0]];
+    const [x2, y2] = vertices.p[commonVertices[1]];
+    const xEdge = (x1 + x2) / 2;
+    const yEdge = (y1 + y2) / 2;
+
+    const x = rn(x0 + 0.95 * (xEdge - x0), 2);
+    const y = rn(y0 + 0.95 * (yEdge - y0), 2);
+
+    return [x, y];
+  }
+
   // export
   return {resample, findNearest};
 })();

modules/ui/routes-editor.js

@@ -264,8 +264,8 @@ function editRoute(id) {
     if (candidateRoutes.length) {
       const options = candidateRoutes.map(r => {
         r.name = r.name || Routes.generateName(r);
-        r.length = r.length || getRouteLength(r.i);
+        r.length = r.length || Routes.getLength(r.i);
-        const length = rn(r.length * distanceScale) + " " + unit;
+        const length = rn(r.length * distanceScale) + " " + distanceUnitInput.value;
         return `<option value="${r.i}">${r.name} (${length})</option>`;
       });
       alertMessage.innerHTML = /* html */ `<div>Route to join with:

utils/commonUtils.js

@@ -37,20 +37,6 @@ function getSegmentId(points, point, step = 10) {
   return minSegment;
 }
 
-// return center point of common edge of 2 pack cells
-function getMiddlePoint(cell1, cell2) {
-  const {cells, vertices} = pack;
-
-  const commonVertices = cells.v[cell1].filter(vertex => vertices.c[vertex].some(cell => cell === cell2));
-  const [x1, y1] = vertices.p[commonVertices[0]];
-  const [x2, y2] = vertices.p[commonVertices[1]];
-
-  const x = (x1 + x2) / 2;
-  const y = (y1 + y2) / 2;
-
-  return [x, y];
-}
-
 function debounce(func, ms) {
   let isCooldown = false;