Dear Larry,
I have put the link at this site
http://116.0.102.219/maps/overlappingPolygons.html. Can you have a look?
On Sun, Aug 22, 2010 at 11:31 PM, [email protected] <[email protected]
> wrote:
> On Aug 22, 8:03 am, ss ss <[email protected]> wrote:
> > Dear Larry,
> > I have actually stream down the codes to only one
> > circle. Below is the codes.
>
> 1. Please post a link not code.
> 2. Please ask a question (if the question is still "how do I avoid
> it?", I can see it from the code you posted, I need a link for that).
>
> -- Larry
>
> >
> > function createPolygon(polygon, html) {
> > var infoHtml = html;
> > polys.push(polygon);
> > GEvent.addListener(polygon, "click", function(overlaylatlng) {
> > if(overlaylatlng){
> > map.openInfoWindow(overlaylatlng, infoHtml);
> > }
> > });}
> >
> > function drawCircle(point, radius, map) {
> > var d2r = Math.PI / 180; // degrees to radians
> > var r2d = 180 / Math.PI; // radians to degrees
> > var earthsradius = 3963; // 3963 is the radius of the earth in miles
> > var points = 64;
> > // find the raidus in lat/lon
> > var rlat = (radius / earthsradius) * r2d;
> > var rlng = rlat / Math.cos(point.lat() * d2r);
> >
> > var extp = new Array();
> > for (var i=0; i < points+1; i++) // one extra here makes sure we
> connect
> > the
> > {
> > var theta = Math.PI * (i / (points/2));
> > ex = point.lng() + (rlng * Math.cos(theta)); // center a + radius x
> *
> > cos(theta)
> > ey = point.lat() + (rlat * Math.sin(theta)); // center b + radius y
> *
> > sin(theta)
> > extp.push(new GPoint(ex, ey));
> > }
> > return extp;}
> >
> > // Display the map, with some controls and set the initial location
> > var map = new GMap2(document.getElementById("map"));
> > map.addControl(new GLargeMapControl());
> > map.addControl(new GMapTypeControl());
> > map.setCenter(new GLatLng(0,0),8);
> >
> > var color =["#000000", "#800000","#F00000", "#008000", "#00F000",
> > "#000080", "#0000F0","#808000", "#F0F000", "#008080"];
> > for (var i=1; i < 2; i++) {
> > createPolygon(new GPolygon(drawCircle(new GLatLng(0,0), (10-i)*10,
> > map), color[i], 10,i/10, color[i], i/10), "polygon "+ i);
> > map.addOverlay(polys[polys.length-1]);
> > }
> >
> > On Sun, Aug 22, 2010 at 10:57 PM, [email protected] <
> [email protected]
> >
> > > wrote:
> > > On Aug 22, 7:13 am, ss ss <[email protected]> wrote:
> > > > Dear Larry,
> > > > How about version 3 can I use is it?
> >
> > > Sure.
> >
> > > > How to use it?
> >
> > > Just like v2, read the documentation, just be wary, it is similar to
> > > v2 but not the same.
> >
> > > > Ok in that example I notice there is two line one is inside the thick
> one
> > > > how to avoid it.
> >
> > > I'm not sure what you mean by that. The arguments of the polygon
> > > constructor are documented. Where is your map that shows the behavior
> > > that you don't want and what have you tried to fix it?
> >
> > > -- Larry
> >
> > > > Below is the code
> > > > createPolygon(new GPolygon(drawCircle(new GLatLng(0,0), (10-i)*10,
> map),
> > > > color[i], 10,i/10, color[i], i/10), "polygon "+ i);
> >
> > > > Ok about the second question for now to know the lat long I will
> split
> > > the
> > > > string for e.g. POINT(103.92508506774902 1.461838406932495). So I am
> > > > wondering is there any other better method? Thank you.
> >
> > > > On Sun, Aug 22, 2010 at 9:36 PM, [email protected]
> > > > <[email protected]>wrote:
> >
> > > > > On Aug 22, 3:05 am, ss <[email protected]> wrote:
> > > > > > Dear All,
> > > > > > I can read this value from my database for a circle
> geo
> > > > > > fence. Thus I also have a radius value. What is the best method
> to
> > > > > > draw a perfect circle as I have gone to this sitehttp://
> > > > >www.geocodezip.com/overlappingPolygons.aspbutthecurve is not
> > > > > > smooth?
> >
> > > > > In v2 you can't really draw a "perfect circle", the approximation
> used
> > > > > in that page is a 32 sided polygon:
> > > > > var points = 32;
> >
> > > > > The more points, the closer to a circle it will be, but the more
> time
> > > > > it will take to draw.
> >
> > > > > > Any idea the format I am reading is for
> > > > > > e.g.POINT(103.92508506774902 1.461838406932495).
> >
> > > > > That shouldn't have anything to do with the circle. Or is this a
> > > > > second question?
> >
> > > > > -- Larry
> >
> > > > > --
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