protected virtual void OnTileLoaded(object sender, TileLoadResultEventArgs e)
{
if (e.Result == TileLoadResult.Success)
{
DataRect tileBounds = tileProvider.GetTileBounds(e.ID);
bool containsInDrawn = drawnBounds.Contains(tileBounds) || drawnBounds.IsEmpty;
bool shouldDraw = containsInDrawn && !invalidatePending && e.ID.Level <= tileProvider.Level;
if (shouldDraw)
{
DrawImage(e.Image, tileBounds, e.ID);
}
}
}
protected override void OnRender(DrawingContext drawingContext)
{
if (DesignerProperties.GetIsInDesignMode(this))
{
return;
}
if (plotter == null)
{
return;
}
rendering = true;
base.OnRender(drawingContext);
var transform = plotter.Viewport.Transform;
Rect output = plotter.Viewport.Output;
DataRect visible = plotter.Viewport.Visible;
visibleBounds = visible;
var tileInfos = GetVisibleTiles();
//Debug.WriteLine(String.Format("OnRender: {0}", DateTime.Now.TimeOfDay.ToString()));
var dc = drawingContext;
var lowerTilesList = GetLoadedLowerTiles(tileInfos);
// displaying lower tiles
if (showLowerTiles)
{
foreach (var tileInfo in lowerTilesList)
{
var tile = tileInfo.Id;
if (server.IsLoaded(tile))
{
var bmp = server[tile];
DataRect visibleRect = tileProvider.GetTileBounds(tile);
Rect screenRect = visibleRect.ViewportToScreen(transform);
Rect enlargedRect = EnlargeRect(screenRect);
dc.PushClip(tileInfo.Clip);
dc.DrawImage(bmp, enlargedRect);
dc.Pop();
//if (!visibleRect.IntersectsWith(visible))
//{
// dc.DrawRectangle(Brushes.Red, null, output);
//}
if (drawDebugBounds)
{
DrawDebugInfo(dc, enlargedRect, tile);
}
}
else
{
server.BeginLoadImage(tile);
}
}
}
foreach (var tileInfo in tileInfos)
{
if (server.IsLoaded(tileInfo.Tile))
{
var bmp = server[tileInfo.Tile];
Rect enlargedRect = EnlargeRect(tileInfo.ScreenBounds);
drawingContext.DrawImage(bmp, enlargedRect);
// drawing debug bounds
if (drawDebugBounds)
{
DrawDebugInfo(drawingContext, tileInfo.ScreenBounds, tileInfo.Tile);
}
}
else
{
server.BeginLoadImage(tileInfo.Tile);
}
}
rendering = false;
}
private void OnRender()
{
if (Plotter == null)
{
return;
}
if (DesignerProperties.GetIsInDesignMode(this))
{
return;
}
if (rendering && !renderingPending)
{
Dispatcher.BeginInvoke(OnRender);
return;
}
else if (rendering)
{
return;
}
rendering = true;
renderingPending = false;
ContentPanel.Children.Clear();
var transform = Plotter.Viewport.Transform;
Rect output = Plotter.Viewport.Output;
DataRect visible = Plotter.Viewport.Visible;
var tileInfos = GetVisibleTiles();
var lowerTiles = GetLoadedLowerTiles(tileInfos);
foreach (var tile in lowerTiles)
{
var id = tile.Id;
if (TileSystem.IsLoaded(id))
{
var bmp = TileSystem[id];
DataRect visibleRect = Transform(TileProvider.GetTileBounds(id));
Rect screenRect = visibleRect.DataToScreen(transform);
DrawTile(bmp, screenRect, visibleRect, tile.Clip);
}
else
{
TileSystem.BeginLoadImage(id);
}
}
foreach (var tileInfo in tileInfos)
{
if (TileSystem.IsLoaded(tileInfo.Tile))
{
var bmp = TileSystem[tileInfo.Tile];
DrawTile(bmp, tileInfo.ScreenBounds, tileInfo.VisibleBounds, null);
}
else
{
TileSystem.BeginLoadImage(tileInfo.Tile);
}
}
rendering = false;
}
