Initial data commit

Task/Polymorphism/JavaScript/polymorphism.js

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+/* create new Point in one of these ways:
+ *    var p = new Point(x,y);
+ *    var p = new Point(a_point);
+ * default value for x,y is 0
+ */
+function Point() {
+    var arg1 = arguments[0];
+    var arg2 = arguments[1];
+
+    if (arg1 instanceof Point) {
+        this.x = arg1.x;
+        this.y = arg1.y;
+    }
+    else {
+        this.x = arg1 == null ? 0 : arg1;
+        this.y = arg2 == null ? 0 : arg1;
+    }
+
+    this.set_x = function(_x) {this.x = _x;}
+    this.set_y = function(_y) {this.y = _y;}
+}
+
+Point.prototype.print = function() {
+    var out = "Point(" + this.x + "," + this.y + ")";
+    print(out);
+}
+
+/* create new Circle in one of these ways:
+ *    var c = new Circle(x,y,r);
+ *    var c = new Circle(a_circle);
+ *    var c = new Circle(a_point,r);
+ * default value for x,y,r is 0
+ */
+function Circle() {
+    var arg1 = arguments[0];
+    var arg2 = arguments[1];
+    var arg3 = arguments[2];
+
+    if (arg1 instanceof Circle) {
+        this.x = arg1.x;
+        this.y = arg1.y;
+        this.r = arg1.r;
+    }
+    else if (arg1 instanceof Point) {
+        this.x = arg1.x;
+        this.y = arg1.y;
+        this.r = arg2 == null ? 0 : arg2;
+    }
+    else {
+        this.x = arg1 == null ? 0 : arg1;
+        this.y = arg2 == null ? 0 : arg2;
+        this.r = arg3 == null ? 0 : arg3;
+    }
+
+    this.set_x = function(_x) {this.x = _x;}
+    this.set_y = function(_y) {this.y = _y;}
+    this.set_r = function(_r) {this.r = _r;}
+}
+
+Circle.prototype.print = function() {
+    var out = "Circle(" + this.x + "," + this.y + "," + this.r + ")";
+    print(out);
+}