diff --git a/JavaScript/8-geometry.js b/JavaScript/8-geometry.js
index 619d49a..fe21359 100644
--- a/JavaScript/8-geometry.js
+++ b/JavaScript/8-geometry.js
@@ -16,16 +16,6 @@ class Polygon {
this.points = points;
}
- get area() {
- let value = 0;
- let d = this.points[this.points.length - 1];
- for (const p of this.points) {
- value += p.x * d.y - d.x * p.y;
- d = p;
- }
- return Math.abs(value) / 2;
- }
-
toString() {
return this.points.map((p) => p.toString()).join('; ');
}
@@ -62,23 +52,34 @@ class Geometry {
point.y = x * sin + y * cos;
}
}
+
+ static area(polygon) {
+ const { points } = polygon
+ let value = 0;
+ let d = points[points.length - 1];
+ for (const p of points) {
+ value += p.x * d.y - d.x * p.y;
+ d = p;
+ }
+ return Math.abs(value) / 2;
+ }
}
// Usage
const rect = new Rect(10, 10, 30, -10);
console.log(rect);
-console.log(rect.area);
+console.log(Geometry.area(rect));
console.log('Rotate 45');
Geometry.rotate(rect, 45);
console.log(rect);
-console.log(rect.area);
+console.log(Geometry.area(rect));
const triangle = new Triangle(0, 0, 15, 0, 0, 15);
console.log(triangle);
console.log('Rotate 90');
Geometry.rotate(triangle, 90);
console.log(triangle);
-console.log(triangle.area);
+console.log(Geometry.area(triangle));
console.log(`${triangle}`);
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