static public Geometry ComputeGeometry(Expr e, double fsize, out Rct nombbox)
{
EDrawingContext edc = new EDrawingContext(fsize, null, Colors.Black);
EWPF us = new EWPF(false);
Box b = us.Compose(e);
b.Measure(edc);
nombbox = b.nombbox;
return(b.ComputeGeometry(edc));
}
/// <summary>
/// Note that the y component of the point where returns is the math axis, midway between the baseline and the x-height.
/// </summary>
/// <param name="fsize">Em-height of font to use. (This is essentially the font size.)</param>
/// <param name="where">Note that the y component of the point this returns is the math axis, midway between the baseline and the x-height.</param>
/// <param name="showinvisibles">Whether to draw parentheses indicating function application slightly darker</param>
/// <returns>nominal bounding box of resulting typeset as drawn</returns>
// TJC:
static public BoxRct Draw(Expr e, double fsize, DrawingContext dc, Color color, Func <Rct, EDrawingContext, Pt> where, bool showinvisibles)
{
EDrawingContext edc = new EDrawingContext(fsize, dc, color);
EWPF us = new EWPF(showinvisibles);
edc.Brush.Opacity = Opacity; // TJC: support opacity change
Box b = us.Compose(e);
b.Measure(edc);
Pt loc = where (b.nombbox, edc);
b.Draw(edc, loc);
// TJC:
return(new BoxRct(b, b.nombbox + (Vec)loc));
}