I am developing a WPF application that displays complex graphics to a window. I need these graphics to be highly dynamic, meaning that for instance lines can appear, disappear or just be moved at any time (by mouse interaction or programmatically).

Is there a way to achieve that without rebuilding the complete display list every time ? A typical case is that of the plot of a function where the data points can move, but not the rest. The points may be computed on the fly and not remembered in an array, so referring to their graphical representation is tricky.

Code example (on request):

// Add a Line Element
myLine = new Line();
myLine.Stroke = System.Windows.Media.Brushes.LightSteelBlue;
myLine.X1 = 1;
myLine.X2 = 50;
myLine.Y1 = 1;
myLine.Y2 = 50;
myLine.HorizontalAlignment = HorizontalAlignment.Left;
myLine.VerticalAlignment = VerticalAlignment.Center;
myLine.StrokeThickness = 2;
myGrid.Children.Add(myLine);

CodePudding user response：

I found that the DrawingGroup class partly fulfills my needs, as it allows to group the graphical entities and handle them as a whole. Anyway, one still has to track every group in order to edit them separately.