private void btnOutline_Click(object sender, EventArgs e)
{
curveBox.outlines = null;
var dissolvedCurves = new List <Curve>(CurveTools.Dissolve(curveBox.curves));
//var cleanedCurves = new List<Curve>(CurveTools.RemoveOrphanedCurves(dissolvedCurves));
var curves = new CurveCollection(dissolvedCurves).BreakApart();
curveBox.curves = new CurveCollection(dissolvedCurves);
curveBox.outlines = new CurveCollection(curves.GetOutlines());
curveBox.Invalidate();
}
