Question

Given a System.Windows.Media.Geometry class instance, is there an easy way to convert this to a list of outlines and points? For example, how could I simply break this down into a list of LineSegments for custom rendering.

FormattedText formattedText = new FormattedText( "Hello", ...);
Geometry textGeometry = formattedText.BuildGeometry(new System.Windows.Point(0, 0));

How to list each of the outlines (where O would be an inside/outside circle) and each of the points on each outline?

As per the answer below;

    var flatten = textGeometry.GetFlattenedPathGeometry();
    PathFigureCollection pfc = flatten.Figures;

    foreach (PathFigure pf in pfc)
     {
        foreach (PathSegment ps in pf.Segments)
         {
            if (ps is LineSegment)

Answer 1

On the Geometry class, you can use GetFlattenedPathGeometry(), GetOutlinedPathGeometry() (or related – decide what you actually want) to get a PathGeometry and then query the Figures to get a list of figures. Each of these PathFigure objects has the segments (which may be line segments, bezier, etc).

Note that in doing this, you may lose some information if you do it naively – if any arbitrary Geometry can be given, you will probably need to do more than just call FlattenedPathGeometry to not lose things like fill information.