private void OnPositionChanged(DependencyPropertyChangedEventArgs e)
{
PositionChanged.Raise(this, new PositionChangedEventArgs {
Position = (Point)e.NewValue, PreviousPosition = (Point)e.OldValue
});
ViewportPanel.SetX(this, Position.X);
ViewportPanel.SetY(this, Position.Y);
}
private void UpdateUI()
{
panel.Children.Clear();
if (plotter == null)
{
return;
}
var grid = Grid;
if (grid == null)
{
return;
}
var bounds = grid.Grid.GetGridBounds();
Viewport2D.SetContentBounds(this, bounds);
int width = grid.Width;
int height = grid.Height;
// todo not the best way to determine size of markers in case of warped grids.
double deltaX = (grid.Grid[width - 1, 0].X - grid.Grid[0, 0].X) / width;
double deltaY = (grid.Grid[0, height - 1].Y - grid.Grid[0, 0].Y) / height;
for (int ix = 0; ix < width; ix++)
{
int localX = ix;
Dispatcher.BeginInvoke(() =>
{
for (int iy = 0; iy < height; iy++)
{
Ellipse ellipse = new Ellipse {
MaxWidth = 10, MaxHeight = 10
};
var position = grid.Grid[localX, iy];
ViewportPanel.SetX(ellipse, position.X);
ViewportPanel.SetY(ellipse, position.Y);
ViewportPanel.SetViewportWidth(ellipse, deltaX / 2);
ViewportPanel.SetViewportHeight(ellipse, deltaY / 2);
if (localX % 10 == 0 && iy % 10 == 0)
{
ellipse.Fill = Brushes.Black;
}
else
{
ellipse.Fill = Brushes.Gray.MakeTransparent(0.7);
}
panel.Children.Add(ellipse);
}
}, DispatcherPriority.Background);
}
}