Position class

src/Position.js

@@ -0,0 +1,65 @@
+"use strict";
+
+/**
+ * Position class
+ * @constructor
+ */
+export default function Position() {
+    this.latitude = 0;
+    this.longitude = 0;
+
+    /**
+     * Transform Latitude to DDM
+     * @param lat
+     * @returns {{decimal: number, minutes: number, direction: string}}
+     */
+    this.LatToDDM = (lat) => {
+        let sDirection = (lat > 0) ? 'N' : 'S';
+
+        let iDecimal = Math.abs(parseInt(lat));
+        let iMinutes = Math.abs(parseInt((lat - parseInt(lat)) * 60));
+
+        /*
+        return {
+            decimal: iDecimal,
+            minutes: iMinutes,
+            direction: sDirection
+        };
+         */
+        return {
+            decimal: iDecimal,
+            minutes: iMinutes,
+            direction: sDirection
+        };
+    };
+
+    /**
+     * Check position
+     * @param geo
+     * @param circle
+     * @returns {boolean}
+     */
+    this.CheckPos = (geo, circle) => {
+        const DDM = this.LatToDDM(geo.lat);
+
+        switch (circle) {
+            case 'eq':
+                return (DDM.decimal === 0);
+
+            case 'cancer':
+                return (DDM.decimal === 23 && DDM.minutes === 26 && DDM.direction === 'N');
+
+            case 'cap':
+                return (DDM.decimal === 23 && DDM.minutes === 26 && DDM.direction === 'S');
+
+            case 'artic':
+                return (DDM.decimal === 66 && DDM.minutes === 33 && DDM.direction === 'N');
+
+            case 'antartic':
+                return (DDM.decimal === 66 && DDM.minutes === 33 && DDM.direction === 'S');
+
+            default:
+                return false;
+        }
+    };
+}