detecting zoe enter and leave events

front/src/Utils/MathUtils.ts

@@ -0,0 +1,27 @@
+
+export class MathUtils {
+
+    /**
+     * 
+     * @param p Position to check.
+     * @param r Rectangle to check the overlap against.
+     * @returns true is overlapping
+     */
+    public static isOverlappingWithRectangle(
+        p: { x: number, y: number},
+        r: { x: number, y: number, width: number, height: number},
+    ): boolean {
+        return (this.isBetween(p.x, r.x, r.x + r.width) && this.isBetween(p.y, r.y, r.y + r.height));
+    }
+
+    /**
+     * 
+     * @param value Value to check
+     * @param min inclusive min value
+     * @param max inclusive max value
+     * @returns true if value is in <min, max>
+     */
+    public static isBetween(value: number, min: number, max: number): boolean {
+        return (value >= min) && (value <= max);
+    }
+}