一、将正负180的值转成0-360
/// <summary>
/// 正负180, 0--->360
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
public static double Conv_k(double p)
{
while (p > 180)
{
p = p - 360;
}
while (p < -180)
{
p = p + 360;
}
if(p<=90)
{
return 90 - p;
}
if(p>90)
{
return 360 + (90 - p);
}
return 0;
}