private static void OnScaleChanged(DependencyObject d)
{
AnimatedRadialGauge radialGauge = (AnimatedRadialGauge)d;
radialGauge.UpdateNormalizedAngles();
var scale = radialGauge.GetTemplateChild(ScalePartName) as Path;
if (scale != null)
{
if (radialGauge.NormalizedMaxAngle - radialGauge.NormalizedMinAngle == 360)
{
// Draw full circle.
var eg = new EllipseGeometry();
eg.Center = new Windows.Foundation.Point(100, 100);
eg.RadiusX = 100 - radialGauge.ScalePadding - (radialGauge.ScaleWidth / 2);
eg.RadiusY = eg.RadiusX;
scale.Data = eg;
}
else
{
// Draw arc.
var pg = new PathGeometry();
var pf = new PathFigure();
pf.IsClosed = false;
var middleOfScale = 100 - radialGauge.ScalePadding - (radialGauge.ScaleWidth / 2);
pf.StartPoint = radialGauge.ScalePoint(radialGauge.NormalizedMinAngle, middleOfScale);
var seg = new ArcSegment();
seg.SweepDirection = SweepDirection.Clockwise;
seg.IsLargeArc = radialGauge.NormalizedMaxAngle > (radialGauge.NormalizedMinAngle + 180);
seg.Size = new Size(middleOfScale, middleOfScale);
seg.Point = radialGauge.ScalePoint(radialGauge.NormalizedMaxAngle, middleOfScale);
pf.Segments.Add(seg);
pg.Figures.Add(pf);
scale.Data = pg;
}
if (!DesignTimeHelpers.IsRunningInLegacyDesignerMode)
{
OnFaceChanged(radialGauge);
}
}
}
