/// <summary>
/// 中心角转离心角
/// </summary>
/// <param name="av">中心角</param>
/// <param name="ar">扇形所在椭圆辐射半径</param>
/// <returns>离心角</returns>
private double Ang2ecc(double av, GExtra ar)
{
double x = ar.Y * Math.Cos(av * Math.PI / 180), y = ar.X * Math.Sin(av * Math.PI / 180);
{
return(Math.Atan2(Math.Abs(y), x) * (
y < 0 ? -1 : 1
));
}
}
public Rect()
: base()
{
this.thick = 1;
this.slope = 0;
this.extra = null;
this.point = null;
this.style = GLinear.SOLID;
this.stuff = Colors.Transparent;
this.color = Color.FromRgb(255, 0, 0);
}
/// <summary>
/// 辐射地理范围转像素范围
/// </summary>
/// <param name="ext"></param>
/// <returns></returns>
protected GExtra Fit4e(GExtra ext)
{
if (!MatchUtils.IsEmpty(ext))
{
double d2m = this.Target.Netmap.Craft * WMaper.Units.M / this.Target.Netmap.Deg2sc();
{
if (d2m > 0)
{
return(new GExtra(ext.X * d2m, ext.Y * d2m));
}
}
}
return(new GExtra());
}