Thanks for Mike Williams and Marcelo.
I write Gpolygon.copy() and it work now.
Function code is like this:
//copy of polygon by constructor
GPolygon.prototype.copy = function(){
var points = [];
var pointsCount = this.getVertexCount();
var polyline = this.l[0]; //outline of polygon
for (var i = 0; i < pointsCount; i++) {points.push
(this.getVertex(i));}
return new GPolygon(points, polyline.color, polyline.weight,
polyline.opacity, this.color, this.opacity);
}
look at this page:
http://simonepoint.googlepages.com/FixPolygonCopyBug.htm
though it is easy to do, I think many people need it support .copy
rather than write it by themself .
As it is easy to implement gplygon.copy, why not add it to APIs?
BTW, an **abstract method** of the parent class must be implemented by
subclass.
Is Gpolygon a subclass or an object prototyped from Goverlay ? If it
is , I think it has implemented .copy() already.
Forgive my honesty, my opinion is that Gpolygon has implemented .copy
() but it has some bugs.
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