Init

js/geometry/GeometryPointCollection.js

@@ -0,0 +1,68 @@
+import GeometryRect from "./GeometryRect.js";
+
+export default class GeometryPointCollection
+{
+    constructor()
+    {
+        this.points = [];
+    }
+
+    addGeometryPoint(geometryPoint)
+    {
+        if (!this.isContainingPoint(geometryPoint)) {
+            this.points.push(geometryPoint);
+        }
+    }
+
+    isContainingPoint(geometryPoint)
+    {
+        for (let p = 0; p < this.points.length; p++) {
+            if (geometryPoint.isEqual(this.points[p])) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    getLength()
+    {
+        return this.points.length;
+    }
+
+    getPoint(index)
+    {
+        return this.points[index];
+    }
+
+    forEach(callback)
+    {
+        this.points.forEach(callback);
+    }
+
+    sort()
+    {
+        this.points.sort(
+            function (a, b) {
+                return a.x > b.x || a.y > b.y;
+            }
+        )
+    }
+
+    getRect()
+    {
+        if (this.getLength() < 2) {
+            console.log('GeometryPointCollection.getRect(): Collection must contain at least 2 points!');
+            return null;
+        }
+
+        this.sort();
+
+        let positionTopLeft = this.getPoint(0);
+        let positionBottomRight = this.getPoint(this.getLength() - 1);
+        let width = positionBottomRight.x - positionTopLeft.x;
+        let height = positionBottomRight.y - positionTopLeft.y;
+
+        return new GeometryRect(positionTopLeft.x, positionTopLeft.y, width, height);
+    }
+}