Update BuildingShapeUtils.js

Author: Beakerboy

src/extras/BuildingShapeUtils.js

@@ -289,38 +289,29 @@ class BuildingShapeUtils extends ShapeUtils {
     var p0;
     var p1;
     var p2;
+
+    function calcAngle(p0, p1, p2) {
+      let angle = Math.atan2(p2.y - p1.y, p2.x - p1.x) - Math.atan2(p0.y - p1.y, p0.x - p1.x);
+      if (angle >= Math.PI) {
+        angle -= Math.PI;
+      } else if (angle < -Math.PI) {
+        angle += Math.PI;
+      }
+      return angle;
+    }
+
     p0 = points[points.length - 1];
     p1 = points[0];
     p2 = points[1];
-    let angle = Math.atan2(p2.y - p1.y, p2.x - p1.x) - Math.atan2(p0.y - p1.y, p0.x - p1.x);
-    if (angle >= Math.PI) {
-      angle -= Math.PI;
-    } else if (angle < -Math.PI) {
-      angle += Math.PI;
-    }
-    angles.push(angle);
+    
+    angles.push(calcAngle(p0, p1, p2));
     for (let i = 1; i < points.length - 1; i++) {
       p0 = points[i - 1];
       p1 = points[i];
       p2 = points[i + 1];
-      angle = Math.atan2(p2.y - p1.y, p2.x - p1.x) - Math.atan2(p0.y - p1.y, p0.x - p1.x);
-      if (angle >= Math.PI) {
-        angle -= Math.PI;
-      } else if (angle < -Math.PI) {
-        angle += Math.PI;
-      }
-      angles.push(angle);
-    }
-    p0 = points[points.length - 2];
-    p1 = points[points.length - 1];
-    p2 = points[0];
-    angle = Math.atan2(p2.y - p1.y, p2.x - p1.x) - Math.atan2(p0.y - p1.y, p0.x - p1.x);
-    if (angle >= Math.PI) {
-      angle -= Math.PI;
-    } else if (angle < -Math.PI) {
-      angle += Math.PI;
+      angles.push(calcAngle(p0, p1, p2));
     }
-    angles.push(angle);
+    angles.push(calcAngle(p0, p1, p2));
     return angles;
   }