private async static Task <bool> ProcessTile(FeatureLayer shapeFile, int tileX, int tileY, int zoom, IEnumerable <string> columnNames, string targetFolder)
{
List <FeatureLayer> layers = new List <FeatureLayer>();
FeatureLayer layer = (FeatureLayer)shapeFile.CloneDeep();
layers.Add(layer);
Tile vectorTile = new Tile();
await Task.Run(() =>
{
vectorTile = Generate(tileX, tileY, zoom, layers, columnNames, 512, 1);
});
if (vectorTile != null && vectorTile.Layers.Count > 0)
{
await Task.Run(() =>
{
using (MemoryStream ms = new MemoryStream())
{
vectorTile.Serialize(ms);
byte[] content = ms.ToArray();
byte[] gzippedContent = GZipData(content);
File.WriteAllBytes(Path.Combine(targetFolder, $"{zoom}_{tileX}_{tileY}.mvt"), gzippedContent);
}
});
return(true);
}
return(false);
}
private void EditLayerStyle(FeatureLayer layer)
{
if (layer != null)
{
FormStyleEditor frmStyleEditor = new FormStyleEditor();
frmStyleEditor.CurrentStyleType = themeView.Items[selectedOrder].StyleType;
frmStyleEditor.ColumnNames = ExplorerHelper.GetColumnNames(layer);
frmStyleEditor.BaseLayer = layer;
// store layer status and will recover it after serialize/deserialize
bool isOpened = layer.IsOpen;
// close layer to avoid serialize exception
layer.Close();
// clone layer
Layer clonedLayer = layer.CloneDeep();
DialogResult isStyleChanged;
winformsMap1.Overlays[0].Lock.EnterWriteLock();
try
{
isStyleChanged = frmStyleEditor.ShowDialog();
}
finally
{
winformsMap1.Overlays[0].Lock.ExitWriteLock();
}
if (isStyleChanged == DialogResult.OK)
{
themeView.Items[selectedOrder].StyleType = frmStyleEditor.CurrentStyleType;
winformsMap1.Refresh();
}
else
{
// because user cancel modify style, so restore layer
((LayerOverlay)winformsMap1.Overlays[0]).Layers[selectedOrder] = clonedLayer;
}
// recover layer status
if (isOpened)
{
layer.Open();
}
}
}
