private void PopulateRasterFileDictionary(RasterFileDictionary dictionary, FileMetadata mainTile, IRasterService rasterService, IEnumerable <FileMetadata> fileMetadataList)
{
// Add main tile
if (!dictionary.ContainsKey(mainTile))
{
dictionary[mainTile] = rasterService.OpenFile(mainTile.Filename, mainTile.fileFormat);
}
foreach (var fileMetadata in fileMetadataList)
{
if (!dictionary.ContainsKey(fileMetadata))
{
dictionary[fileMetadata] = rasterService.OpenFile(fileMetadata.Filename, fileMetadata.fileFormat);
}
}
}
private float GetElevationAtPoint(FileMetadata mainTile, RasterFileDictionary tiles, int x, int y, float nullValue)
{
FileMetadata goodTile = FindTile(mainTile, tiles, x, y, out int xRemap, out int yRemap);
if (goodTile == null)
{
return(nullValue);
}
if (tiles.ContainsKey(goodTile))
{
return(tiles[goodTile].GetElevationAtPoint(goodTile, xRemap, yRemap));
}
else
{
throw new Exception("Tile not found. Should not happen.");
}
}
