/// <summary>
/// Retrieves the product from the Trek web services and saves it to a file. If the
/// requested file is already present on the file system, then it is loaded instead,
/// unless file redownload is forced.
/// </summary>
public void SubsetProduct(TerrainProductMetadata productInfo, bool forceRedownload, Action <string> callback)
{
if (productInfo.Format == 0)
{
productInfo.Format = ImageFileFormat.Tiff;
}
string filename = $"{productInfo.EncodeBase64()}.{FilePath.ProductFileExtension}";
string directory = Path.Combine(FilePath.PersistentRoot, FilePath.Product);
IList <string> availableFiles = FileUtils.ListFiles(directory, $"*.{FilePath.ProductFileExtension}", true);
string filepath = Path.Combine(directory, filename);
if (availableFiles.Contains(filename))
{
if (!forceRedownload)
{
callback(filepath);
return;
}
File.Delete(filepath);
}
string baseUrlWithFormat = $"{BaseUrl}{SubsetUrl}/{productInfo.Format.FileExtension()}/subset";
IDictionary <string, string> paramsMap = new Dictionary <string, string>()
{
{ "itemUUID", productInfo.ProductUUID },
{ "bbox", productInfo.BoundingBox.ToString(",") },
{ "width", $"{productInfo.Width}" },
{ "height", $"{productInfo.Height}" }
};
string resourceUrl = HttpRequestUtils.AppendParams(baseUrlWithFormat, paramsMap, true);
Debug.Log(resourceUrl);
VerifyProductExists(productInfo, exists => {
if (exists)
{
HttpClient.DownloadFile(resourceUrl, filepath, callback);
}
else
{
Debug.LogError($"Product UUID {productInfo.ProductUUID} is not a raster or does not exist.");
}
});
}
public void GetDistance(string points, Action <string> callback)
{
IDictionary <string, string> paramsMap = new Dictionary <string, string>()
{
{ "endpoint", Endpoint },
{ "path", points },
{ "radiusInMeters", Mars.Radius.ToString() }
};
string url = HttpRequestUtils.AppendParams("https://trek.nasa.gov/mars/TrekServices/ws/elevationProfile/distance", paramsMap);
HttpClient.Get(url, res => {
string responseBody = HttpClient.GetReponseBody(res);
callback?.Invoke(responseBody);
});
}
public void GetRasters(Action <SearchResult> callback, bool forceRefresh = false)
{
if (forceRefresh)
{
_rasters = null;
}
if (_rasters)
{
callback?.Invoke(_rasters);
return;
}
IDictionary <string, string> paramsMap = new Dictionary <string, string>()
{
{ "productType", "*" },
};
string searchUrl = HttpRequestUtils.AppendParams($"{BaseUrl}{SearchUrl}", paramsMap);
HttpClient.Get(searchUrl, (res) => {
string responseBody = HttpClient.GetReponseBody(res);
_rasters = DeserializeResults(responseBody);
callback?.Invoke(_rasters);
});
}