[[Programming] get heading]

Thanks !

[[Programming] get heading]

Please !

[[Programming] get heading]

Hello,

I’m modifying the FSD server with their source code , I’ve added some functions like FSHOST (?where ?hop…). I want to add a command for send the heading from the pilot to the airport

I’ve found it [C/C++]:

double GetCap(double Latclient, double Longclient,double Latdest, double Longdest)
{
double LaA;double LaB;double LonA;double LonB;
double P;float Pi; double m;double brg;

Pi = 3.14159265358979323846;

int deg=(int)Latclient;
float Min=(Latclient-deg)*60;
LaA = (deg + Min / 60.0) / 180.0 * Pi;

deg=(int)Latdest;
Min=(Latdest-deg)*60.0;

LaB = (deg + Min / 60.0) / 180.0 * Pi;

deg=(int)Longclient;
Min=(Longclient-deg)*60.0;

LonA = (deg + Min / 60.0) / 180.0 * Pi;

deg=(int)Longdest;
Min=(Longdest-deg)*60.0;

LonB = (deg + Min / 60.0) / 180.0 * Pi;

P = LonB - LonA;

m = acos(sin(LaA) * sin(LaB) * cos(LonB - LonA) + cos(LaA) * cos(LaB));

brg = acos(sin(LaB) / (sin(m) * cos(LaA)) - tan(LaA) / tan(m));

if(P < 0)brg = 2 * Pi - brg;

brg = brg / Pi * 180;

return brg;

}

but I get 83 instead of 89 (in FSNAV) for the same airport.

Please, could you send me your function for the heading ?

Thanking you in advance for your help (and for FSNAV !).

EDIT : found it ! I didn't add the mag. variation ! how to calculate ?

Thanking you in advance.

----

Sorry for my french, i'm french !

[Export to .FSN.....]

Thanks alastairmonk1 !!

[Export to .FSN.....]

thanks,

i have just a question :

can i use the ICAO.txt for my module ?

[Export to .FSN.....]

please :cry:

[Export to .FSN.....]

Hi ,

I’m programming a FS module in C.

It’s like a Flight Recorder, I save the position of plane each 5 seconds (~5s to ~30s).

I need to display the flight plan in FSNAVIGATOR (the data of the position which have been saved) (export to .FSN format from my module.)

Where can I find the library , or the code to decrypt(and crypt) a .fsn format ?

Thanks

Sorry for my English I’m French....

[Lat and long [c++]]

Hi,

I don't understand all in "To convert to Degrees:" in the sdk (because i am french and my english is poor )

could you give me the code for to convert in degrees ? in c++

thanks

[Lat and long [c++]]

Hi ,

I have 2 questions :

How to get the latitude and longitude of the plane ? (like N47*19.79 E3*1.79 ....)

I don’t know if it’s possible, I want to know the distance covered in MN (sorry i don’t know the real expression in English )

In C++ with Devc++

Thanks :wink:

[Write a text]

Hi

How to write a text in FS ? (in the green line).

in C++.

Thanks in advance.

[How to read …]

Thanks Pete !

It's okay !

But with wsprintf(alting, "%.2f", dAlt); I get "f"

And with sprintf(alting, "%.2f", dAlt); it's okay

Thanks !

[How to read …]

Hi

Sorry for my English I am French (and to understand the SDK with my English ....,I am 14 :cry: ...)

I am programming in C++ (with DEVC++).

And I want to read some data of Flight Simulator (altitude, speed ...).

But I can read some variable (with “expression”)

For example : for altitude (0570, S64) the expression is “#*3.28084/(65536*65536)” and with this :

int altint;
char alt[8],alting[8];
......  
if (!FSUIPC_Read(0x0840, 8, alt, &dwResult) || !FSUIPC_Process(&dwResult)) fTimeOk = FALSE;
wsprintf(alting, "%d", alt[0]);
altint=atoi(alting);
altint=altint*3.28084/(65536*65536);
wsprintf(alting, "%d", altint);

and I get : -2147483648 :(

Why ?

Other question :

How to know the nearest airport of the plane ? (ICAO)

Thanks in advance. :wink: