private void UpdateMarkers()
{
double x1 = Line.Start.X;
double y1 = Line.Start.Y;
double x2 = Line.End.X;
double y2 = Line.End.Y;
Line.GetMaxLength(ref x1, ref y1, ref x2, ref y2);
if (Style.StartArrowStyle.ArrowType != ArrowType.None)
{
double a1 = Math.Atan2(y1 - y2, x1 - x2);
StartMarker = CreatArrowMarker(x1, y1, a1, Style.StartArrowStyle);
StartMarker.UpdateStyle();
P0 = (StartMarker as Marker).Point;
}
else
{
StartMarker = null;
P0 = new SKPoint((float)x1, (float)y1);
}
if (Style.EndArrowStyle.ArrowType != ArrowType.None)
{
double a2 = Math.Atan2(y2 - y1, x2 - x1);
EndMarker = CreatArrowMarker(x2, y2, a2, Style.EndArrowStyle);
EndMarker.UpdateStyle();
P1 = (EndMarker as Marker).Point;
}
else
{
EndMarker = null;
P1 = new SKPoint((float)x2, (float)y2);
}
}
public override void UpdateStyle()
{
base.UpdateStyle();
if (Style.StartArrowStyle.ArrowType != ArrowType.None)
{
StartMarker?.UpdateStyle();
}
if (Style.EndArrowStyle.ArrowType != ArrowType.None)
{
EndMarker?.UpdateStyle();
}
}
