/// <summary>
/// Compute the area (in square km) of the region with a border determined by nodes.
/// </summary>
public static double ComputeArea(IEnumerable <IGeoLocation> nodes, string apiKey)
{
var template = File.ReadAllText(Path.Combine("HtmlTemplates", "ComputeAreaTemplate.html"));
var html = new StringBuilder(template);
html.Replace("/*key*/", apiKey);
var nodesStrings = GetNodesStrings(nodes, 16);
html.Replace("/*nodes*/", string.Join($",{Environment.NewLine}", nodesStrings));
var area = JavaScriptHelper.ExecuteAndRead(html.ToString(), "area");
return(area / 1E6);
}
public static IGeoLocation ComputeOffset(IGeoLocation start, int distance, double heading, string apiKey)
{
var template = File.ReadAllText(Path.Combine("HtmlTemplates", "ComputeOffsetTemplate.html"));
var html = new StringBuilder(template);
html.Replace("/*key*/", apiKey);
html.Replace("/*startLat*/", start.Latitude.ToString());
html.Replace("/*startLon*/", start.Longitude.ToString());
html.Replace("/*distance*/", distance.ToString());
html.Replace("/*heading*/", heading.ToString());
var coordinates = JavaScriptHelper.ExecuteAndRead(html.ToString(), new string[] { "latitude", "longitude" });
return(new GeoLocation()
{
Latitude = coordinates["latitude"],
Longitude = coordinates["longitude"]
});
}