private static string ToMountHex(Dms value)
{
var intval = (uint)(value.ValueMod * (uint.MaxValue + 1.0));
intval &= 0xffffff00;
return(intval.ToString("X8"));
}
private string FormatLatLon(Dms lat, Dms lon)
{
var(latSign, latDeg, latMin, latSec, _) = lat.DegreesMinutesSeconds;
var(lonSign, lonDeg, lonMin, lonSec, _) = lon.DegreesMinutesSeconds;
// The format of the location commands is: ABCDEFGH, where:
// A is the number of degrees of latitude.
// B is the number of minutes of latitude.
// C is the number of seconds of latitude.
// D is 0 for north and 1 for south.
// E is the number of degrees of longitude.
// F is the number of minutes of longitude.
// G is the number of seconds of longitude.
// H is 0 for east and 1 for west.
var builder = new StringBuilder(8);
builder.Append((char)latDeg);
builder.Append((char)latMin);
builder.Append((char)latSec);
builder.Append(latSign ? (char)1 : (char)0);
builder.Append((char)lonDeg);
builder.Append((char)lonMin);
builder.Append((char)lonSec);
builder.Append(lonSign ? (char)1 : (char)0);
return(builder.ToString());
}
private static async Task <(Dms ra, Dms dec)?> SolveOne(string filename)
{
var low = 0.9;
var high = 1.1;
var downsample = 4;
var info = new ProcessStartInfo(_bashLocation, BuildCommand(low, high, downsample, filename))
{
UseShellExecute = false,
RedirectStandardOutput = true,
};
var process = Process.Start(info);
var output = await process.StandardOutput.ReadToEndAsync();
var matches = _regex.Match(output);
if (matches.Success)
{
var one = matches.Groups[1].Value;
var two = matches.Groups[2].Value;
if (double.TryParse(one, out var oneValue) && double.TryParse(two, out var twoValue))
{
return(Dms.FromDegrees(oneValue), Dms.FromDegrees(twoValue));
}
}
return(null);
}
public async Task SlewAzAlt(Dms az, Dms alt)
{
var res = await Interact($"b{ToMountHex(az)},{ToMountHex(alt)}");
if (res != "")
{
throw new Exception($"Slew az/alt failed: {res}");
}
}
public async Task Slew(Dms ra, Dms dec)
{
var res = await Interact($"r{ToMountHex(ra)},{ToMountHex(dec)}");
if (res != "")
{
throw new Exception($"Slew RA/DEC failed: {res}");
}
}
public async Task OverwriteRaDec(Dms ra, Dms dec)
{
var res = await Interact($"s{ToMountHex(ra)},{ToMountHex(dec)}");
if (res != "")
{
throw new Exception($"Overwrite RA/DEC failed: {res}");
}
}
public async Task SetLocation(Dms lat, Dms lon)
{
var location = FormatLatLon(lat, lon);
var result = await Interact($"W{location}");
if (result != "")
{
throw new Exception($"Set location failed: {result}");
}
}
static void SplitThreeBytes(Dms valueDms, out byte high, out byte med, out byte low)
{
var value = valueDms.ValueMod;
value *= 256;
high = (byte)value;
value = Dms.Mod(value, 1);
value *= 256;
med = (byte)value;
value = Dms.Mod(value, 1);
value *= 256;
low = (byte)value;
}
async Task PCommandThree(byte one, byte two, byte three, Dms data)
{
SplitThreeBytes(data, out var high, out var med, out var low);
var cmd = new char[8];
cmd[0] = 'P';
cmd[1] = (char)one;
cmd[2] = (char)two;
cmd[3] = (char)three;
cmd[4] = (char)high;
cmd[5] = (char)med;
cmd[6] = (char)low;
cmd[7] = (char)0;
await Interact(new string(cmd));
}
public async Task <(Dms, Dms)> GetAzAlt()
{
var line = await Interact("z");
var split = line.Split(',');
if (split.Length != 2)
{
throw new Exception($"Invalid response to 'z': {line}");
}
var az = Convert.ToUInt32(split[0], 16) / (uint.MaxValue + 1.0);
var alt = Convert.ToUInt32(split[1], 16) / (uint.MaxValue + 1.0);
return(Dms.From0to1(az), Dms.From0to1(alt));
}
public async Task <(Dms, Dms)> GetRaDec()
{
var line = await Interact("e");
var split = line.Split(',');
if (split.Length != 2)
{
throw new Exception($"Invalid response to 'e': {line}");
}
var ra = Convert.ToUInt32(split[0], 16) / (uint.MaxValue + 1.0);
var dec = Convert.ToUInt32(split[1], 16) / (uint.MaxValue + 1.0);
return(Dms.From0to1(ra), Dms.From0to1(dec));
}
public static bool TryParse(string s, out Dms dms)
{
var match = _parseRegex.Match(s);
if (!match.Success)
{
dms = default;
return(false);
}
var signMatch = match.Groups["sign"];
var isNegative = signMatch.Success ? signMatch.Value == "-" : false;
var degrees = double.Parse(match.Groups["degrees"].Value);
var minutesMatch = match.Groups["minutes"];
var minutes = minutesMatch.Success ? double.Parse(minutesMatch.Value) : 0;
var secondsMatch = match.Groups["seconds"];
var seconds = secondsMatch.Success ? double.Parse(secondsMatch.Value) : 0;
var unitMatch = match.Groups["unit"];
if (unitMatch.Success)
{
if (unitMatch.Value == "h" || unitMatch.Value == "H")
{
dms = FromHms(isNegative, degrees, minutes, seconds);
}
else
{
dms = FromDms(isNegative, degrees, minutes, seconds);
}
}
else
{
if (double.TryParse(s, out var rawValue))
{
dms = From0to1(rawValue);
if (rawValue < 0 || rawValue > 1)
{
Console.WriteLine("Got a value outside [0,1] for raw value - did you mean to add a unit? e.g. " + s + "d for degrees");
return(false);
}
}
else
{
throw new Exception("Missing unit, but didn't parse as double: " + s);
}
}
return(true);
}
private (Dms, Dms) ParseLatLon(string value)
{
if (value.Length != 8)
{
throw new Exception($"Invalid lat/lon: {value}");
}
var latDeg = (int)value[0];
var latMin = (int)value[1];
var latSec = (int)value[2];
var latSign = value[3] == 1;
var lonDeg = (int)value[4];
var lonMin = (int)value[5];
var lonSec = (int)value[6];
var lonSign = value[7] == 1;
var lat = Dms.FromDms(latSign, latDeg, latMin, latSec);
var lon = Dms.FromDms(lonSign, lonDeg, lonMin, lonSec);
return(lat, lon);
}
public Task SlowGotoDec(Dms data) => PCommandThree(4, 17, 23, data);
public Task SlowGotoRA(Dms data) => PCommandThree(4, 16, 23, data);
public Task ResetDec(Dms data) => PCommandThree(4, 17, 4, data);
public Task ResetRA(Dms data) => PCommandThree(4, 16, 4, data);
private static async Task ReplMount(string[] cmd, Mount mount)
{
switch (cmd[0])
{
case "help":
Console.WriteLine("slew [ra] [dec] - slew to direction");
Console.WriteLine("slewra [ra] - slow goto");
Console.WriteLine("slewdec [dec] - slow goto");
Console.WriteLine("cancel - cancel slew");
Console.WriteLine("pos - get current direction");
Console.WriteLine("setpos - overwrite current direction");
Console.WriteLine("syncpos - sync/calibrate current direction");
Console.WriteLine("azalt - get current az/alt");
Console.WriteLine("azalt [az] [alt] - slew to az/alt");
Console.WriteLine("track - get tracking mode");
Console.WriteLine("track [value] - set tracking mode");
Console.WriteLine("location - get lat/lon");
Console.WriteLine("location [lat] [lon] - set lat/lon");
Console.WriteLine("time - get mount's time");
Console.WriteLine("time now - set mount's time to now");
Console.WriteLine("aligned - get true/false if mount is aligned");
Console.WriteLine("ping - ping mount, prints time it took");
Console.WriteLine("solve [filename] - plate-solve image with ANSVR");
break;
case "slew":
{
cmd[1] = cmd[1].TrimEnd(',');
if (cmd.Length == 3 && Dms.TryParse(cmd[1], out var ra) && Dms.TryParse(cmd[2], out var dec))
{
await mount.Slew(ra, dec);
}
else
{
goto default;
}
}
break;
case "slewra":
{
if (cmd.Length == 2 && Dms.TryParse(cmd[1], out var ra))
{
await mount.SlowGotoRA(ra);
}
else
{
goto default;
}
}
break;
case "slewdec":
{
if (cmd.Length == 2 && Dms.TryParse(cmd[1], out var ra))
{
await mount.SlowGotoDec(ra);
}
else
{
goto default;
}
}
break;
case "cancel":
await mount.CancelSlew();
break;
case "pos":
{
var(ra, dec) = await mount.GetRaDec();
Console.WriteLine($"{ra.ToDmsString(Dms.Unit.Hours)}, {dec.ToDmsString(Dms.Unit.Degrees)}");
}
break;
case "setpos":
{
cmd[1] = cmd[1].TrimEnd(',');
if (cmd.Length == 3 && Dms.TryParse(cmd[1], out var ra) && Dms.TryParse(cmd[2], out var dec))
{
await mount.ResetRA(ra);
await mount.ResetDec(dec);
}
else
{
goto default;
}
}
break;
case "syncpos":
{
cmd[1] = cmd[1].TrimEnd(',');
if (cmd.Length == 3 && Dms.TryParse(cmd[1], out var ra) && Dms.TryParse(cmd[2], out var dec))
{
await mount.OverwriteRaDec(ra, dec);
}
else
{
goto default;
}
}
break;
case "azalt":
if (cmd.Length == 1)
{
var(az, alt) = await mount.GetAzAlt();
Console.WriteLine($"{az.ToDmsString(Dms.Unit.Degrees)}, {alt.ToDmsString(Dms.Unit.Degrees)}");
}
else if (cmd.Length == 3 && Dms.TryParse(cmd[1], out var az) && Dms.TryParse(cmd[2], out var alt))
{
await mount.SlewAzAlt(az, alt);
}
else
{
goto default;
}
break;
case "track":
if (cmd.Length == 1)
{
var track = await mount.GetTrackingMode();
Console.WriteLine($"Mode: {track}");
Console.WriteLine($"(available: {string.Join(", ", (Mount.TrackingMode[])Enum.GetValues(typeof(Mount.TrackingMode)))})");
}
else if (cmd.Length == 2 && Enum.TryParse <Mount.TrackingMode>(cmd[1], out var mode))
{
await mount.SetTrackingMode(mode);
}
else
{
goto default;
}
break;
case "location":
if (cmd.Length == 1)
{
var(lat, lon) = await mount.GetLocation();
Console.WriteLine($"{lat.ToDmsString(Dms.Unit.Degrees)}, {lon.ToDmsString(Dms.Unit.Degrees)}");
}
else if (cmd.Length == 3 && Dms.TryParse(cmd[1], out var lat) && Dms.TryParse(cmd[2], out var lon))
{
await mount.SetLocation(lat, lon);
}
else
{
goto default;
}
break;
case "time":
if (cmd.Length == 1)
{
var now_one = DateTime.Now;
var time = await mount.GetTime();
Console.WriteLine($"Mount time: {time} (off by {now_one - time})");
}
else if (cmd.Length == 2 && cmd[1] == "now")
{
await mount.SetTime(DateTime.Now);
}
else
{
goto default;
}
break;
case "aligned":
{
var aligned = await mount.IsAligned();
Console.WriteLine($"IsAligned: {aligned}");
}
break;
case "ping":
{
var timer = Stopwatch.StartNew();
var res = await mount.Echo('p');
Console.WriteLine($"{timer.ElapsedMilliseconds}ms");
}
break;
case "solve":
if (cmd.Length == 2)
{
var task = PlateSolve.SolveFile(cmd[1]);
}
else
{
goto default;
}
break;
default:
Console.WriteLine($"Unknown command {string.Join(" ", cmd)}");
break;
}
}