public D2DGraphics(D2DView.RenderTargetEventArgs e)
{
_renderTarget = e.RenderTarget;
_graphics = e.Graphics;
_renderTarget.Transform = SharpDX.Matrix3x2.Identity;
if (!_renderTargetCache.ContainsKey(_renderTarget))
_renderTargetCache[_renderTarget] = new RenderTargetCache();
}
void panelD2DSW_PaintCanvas(object sender, D2DView.RenderTargetEventArgs e)
{
Draw(new D2DGraphics(e), DrawingMode.DrawLines);
}