Implement zone data management and dropdown functionality in Outline component

app/src/functions/isPointInsidePolygon.ts

@@ -0,0 +1,20 @@
+export const isPointInsidePolygon = (
+    point: [number, number],
+    polygon: [number, number][]
+) => {
+    let inside = false;
+    for (let i = 0, j = polygon.length - 1; i < polygon.length; j = i++) {
+        const xi = polygon[i][0],
+            zi = polygon[i][1];
+        const xj = polygon[j][0],
+            zj = polygon[j][1];
+
+        const intersect =
+            // eslint-disable-next-line no-mixed-operators
+            zi > point[1] !== zj > point[1] &&
+            point[0] < ((xj - xi) * (point[1] - zi)) / (zj - zi + 0.000001) + xi;
+
+        if (intersect) inside = !inside;
+    }
+    return inside;
+};