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slopez First Post Reged: 02/21/06 Posts: 1 Re: KML Circle Generator - Java       02/21/06 03:01 PM Edit   Reply   Quote   Quick Reply   package conversionToKML; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; public class KMLCircle { void GenCircle(double centerlat_form, double centerlong_form, int num_points, double radius_form, String outputFile){ double lat1, long1, lat2, long2; double dlat, dlong, d_rad; double a, c, d; double delta_pts; double radial, lat_rad, dlon_rad, lon_rad; double degreeToRadian = Math.PI/180.0; // convert coordinates to radians lat1 = Math.toRadians(centerlat_form); long1 = Math.toRadians(centerlong_form); //Earth measures //Year Name a (meters) b (meters) 1/f Where Used //1980 International 6,378,137 6,356,752 298.257 Worldwide d = radius_form; d_rad = d/6378137; try{ File fileOutput = new File(outputFile); BufferedWriter writer = new BufferedWriter(new FileWriter(fileOutput)); writer.write("<Document>\n<name>$Document</name>\n<Folder>\n<name>$Folder</name>\n<visibility>1</visibility>\n<Placemark>\n<name>$Circle_name</name>\n<visibility>$visibility</visibility>\n<Style>\n<geomColor>$geomColor1$geomColor2</geomColor>\n<geomScale>$geomScale</geomScale></Style>\n<LineString>\n<coordinates>\n"); //System.out.write(c); //System.out.println(c); // loop through the array and write path linestrings for(int i=0; i<=num_points; i++) { //delta_pts = 360/(double)num_points; //radial = Math.toRadians((double)i*delta_pts); radial = Math.toRadians((double)i); //This algorithm is limited to distances such that dlon <pi/2 lat_rad = Math.asin(Math.sin(lat1)* Math.cos(d_rad) + Math.cos(lat1)* Math.sin(d_rad)* Math.cos(radial)); dlon_rad = Math.atan2(Math.sin(radial)* Math.sin(d_rad)* Math.cos(lat1), Math.cos(d_rad)- Math.sin(lat1)* Math.sin(lat_rad)); lon_rad = ((long1 + dlon_rad + Math.PI) % (2*Math.PI)) - Math.PI; //write results writer.write( Math.toDegrees(lon_rad) + ", "); writer.write( Math.toDegrees(lat_rad) + ", 0"); writer.write('\n'); } // output footer writer.write("</coordinates>\n</LineString>\n</Placemark>\n</Folder>\n</Document>"); writer.close(); }catch (IOException e){ return; } } /** * @param args */ public static void main(String[] args) { KMLCircle myCircle = new KMLCircle(); myCircle.GenCircle(37.422000, -122.084073, 360, 10000, "CircleTest.kml"); } } Post Extras

Entire topic Subject Posted by Posted on KML Circle Generator ink_polaroid 04/19/05 04:17 PM Re: KML Circle Generator stebi61   09/19/06 12:18 AM Re: KML Circle Generator barryhunter   09/19/06 02:39 AM Re: KML Circle Generator stebi61   09/19/06 12:30 PM Re: KML Circle Generator ink_polaroid   09/19/06 12:51 AM Re: KML Circle Generator svens   09/19/06 01:57 PM Re: KML Circle Generator: decimal Precision Eliot_Christian   04/17/06 11:25 AM Re: KML Circle Generator: Polygon vs LineString? Eliot_Christian   04/17/06 03:26 AM Re: KML Circle Generator - Java slopez   02/21/06 03:01 PM Re: KML Circle Generator rsgrillo   01/20/06 08:23 AM Re: KML Circle Generator HookEmHorns   01/19/06 12:44 PM Re: KML Circle Generator Lon   07/29/05 09:33 AM Re: KML Circle Generator mcshea98   07/29/05 09:59 AM Re: KML Circle Generator Lon   07/29/05 11:17 AM Re: KML Circle Generator Hulk   07/27/05 05:35 PM Re: KML Circle Generator gbonny   04/20/05 01:09 AM Re: KML Circle Generator mcshea98   04/23/05 04:09 PM Re: KML Circle Generator ink_polaroid   04/24/05 05:19 PM Random thoughts blt   04/24/05 07:25 PM Re: Random thoughts ink_polaroid   04/24/05 08:24 PM Re: Random thoughts ink_polaroid   04/24/05 09:13 PM Re: Random thoughts blt   04/24/05 10:31 PM Re: Random thoughts ink_polaroid   04/25/05 12:28 PM Re: Random thoughts big_hoovie   07/19/05 07:15 AM Re: Circle Generator mcshea98   05/07/05 09:01 AM Re: Circle Generator bfsmith   05/07/05 07:55 PM Re: Circle Generator mcshea98   05/07/05 08:41 PM Re: Circle Generator bfsmith   05/08/05 05:10 PM Re: Circle Generator mcshea98   05/09/05 12:15 AM Re: Circle Generator Steve_Kotleba   06/21/05 01:42 PM Re: Circle Generator FuNkY_CaPrIcOrN   06/21/05 03:36 PM Re: Circle Generator bfsmith   06/16/05 10:36 AM Re: Circle Generator mcshea98   06/16/05 04:44 PM Re: Circle Generator glimme   01/19/06 10:02 AM Re: Circle Generator bfsmith   06/17/05 06:35 PM Re: Circle Generator bfsmith   05/11/05 11:58 AM Re: Random thoughts seer   04/24/05 07:44 PM Re: Random thoughts HSaber   07/27/05 05:26 AM

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