BitmapSource CreateSymbolBitmap(SymbolID symbolID, Color color, bool dark)
{
DrawingVisual drawingVisual = new DrawingVisual();
DrawingContext drawingContext = drawingVisual.RenderOpen();
Drawing d = m_symbolDrawingCache.GetDrawing(symbolID, color);
drawingContext.PushTransform(new ScaleTransform(Math.Floor(m_size) / 100, Math.Floor(m_size) / 100));
drawingContext.DrawDrawing(d);
drawingContext.Pop();
drawingContext.Close();
if (dark)
drawingVisual.Opacity = 0.2;
RenderTargetBitmap bmp = new RenderTargetBitmap((int)m_size, (int)m_size, 96, 96, PixelFormats.Default);
bmp.Render(drawingVisual);
bmp.Freeze();
return bmp;
}