// 处理指向
private void ProcSlewto()
{
// 检查输入坐标正确性
string strEpoch = cmbInEpoch.Text;
double ra = 0.0;
double dec = 0.0;
double tmsid = 0.0; // 恒星时
if (false == ats_.StringHour2Double(txtInRA.Text, ref ra))
{
txtLog.AppendLine("Invalid R.A. style");
//...设置错误字
return;
}
if (false == ats_.StringDegree2Double(txtInDEC.Text, ref dec))
{
txtLog.AppendLine("Invalid DEC. style");
//...设置错误字
return;
}
// DDMAgent=>Autoslew：当前历元
DateTime now = DateTime.UtcNow;
double ra_a = 0.0;
double de_a = 0.0;
char[] epLead = { 'B', 'J' }; // 常见历元的引导字符, 例: B1950, J2000
double jc1 = Convert.ToDouble(strEpoch.Trim(epLead));
double jc2 = ats_.GetEpoch(now.Year, now.Month, now.Day,
now.Hour + (now.Minute + (now.Second + now.Millisecond * 0.001) / 60.0) / 60.0);
jc1 = ats_.Epoch2JC(jc1); // 转换为儒略世纪
jc2 = ats_.Epoch2JC(jc2);
if (strEpoch != "" && string.Compare(strEpoch, "Real", StringComparison.CurrentCultureIgnoreCase) != 0)
{// J2000=>Real
nftele_.ora00 = ra * 15.0;
nftele_.odc00 = dec;
ats_.Epoch2Actual(jc1, ra * 15 * AstroArith.GtoR, dec * AstroArith.GtoR,
jc2, ref ra_a, ref de_a);
ra = ra_a * AstroArith.RtoG / 15;
dec = de_a * AstroArith.RtoG;
nftele_.ora = ra * 15.0;
nftele_.odc = dec;
}
else
{// Real=>J2000
nftele_.ora = ra * 15.0;
nftele_.odc = dec;
ats_.Epoch2Actual(jc2, ra * 15 * AstroArith.GtoR, dec * AstroArith.GtoR,
jc1, ref ra_a, ref de_a);
nftele_.ora00 = ra_a * AstroArith.RtoG;
nftele_.odc00 = de_a * AstroArith.RtoG;
}
tmsid = telescope_.SiderealTime; // 恒星时, 量纲: 小时
if (SafePosition((tmsid - ra) * 15.0, dec) == false)
{ // 超出安全限位, 界面显示及通知远程用户
txtLog.AppendLine("Out of Limit");
//...设置错误字
}
else
{// 在安全范围内
if (telescope_.AtPark == true)
{
telescope_.Unpark();
}
if (telescope_.Tracking == false)
{
telescope_.Tracking = true;
}
obj_range_ = ats_.SphereAngle(nftele_.ora00, nftele_.odc00, telescope_.RightAscension * 15.0, telescope_.Declination);
if (obj_range_ < 1E-6) // 1E-6弧度≈0.2角秒
{
nftele_.state = TELESCOPE_STATE.TELESCOPE_TRACKING;
}
else
{
// 指向前同步时钟
if (ntp_ != null && ntp_.validCorrect == true && ntp_.clockCorrect.TotalMilliseconds > 50)
{
DateTime now1 = DateTime.Now + ntp_.clockCorrect;
ntp_.SetTime(ref now1);
}
// 执行指向操作
nftele_.state = TELESCOPE_STATE.TELESCOPE_SLEWING;
telescope_.TargetRightAscension = ra;
telescope_.TargetDeclination = dec;
telescope_.SlewToTargetAsync();
procSlew.Value = procSlew.Minimum;
}
lblState.Text = TELESCOPE_STATE_STR[(int)nftele_.state];
}
}
