[Conversion problems ?]

Hi Pete,

Last question please, I need to change the weather. Can I use FSUIPC for that or use another interface ?

If possible handle it from another computer with socket.

Thank you for all,

Rémi

[Conversion problems ?]

I settle the problem !

Thank you for your help Pete :razz:

[Conversion problems ?]

Thank you for your answers Pete. And sorry but i don't ignore you, I have difficulty to translate into French.

But now i understand better.

Rémi

[Conversion problems ?]

Ok so my structure should look like

typedef struct Plane
{
    int pitch;
    int head;
    int bank;

    double lat;

    double log;

    double alt;
} Plane;
[/CODE]

long long or double for altitude, longitude and latitude ?

And if I use long long (my compiler can) how can I convert double in long long ?

Sorry but I do not understand everything I'm a beginner ...

Thank you so mutch for all,

Rémi

[Conversion problems ?]

Instead of all those separate FSUIPC_Writes (which will all be processed separately in FSUIPC!), make a structure for all 6 values, set up your structure, then write it all with one (1) FSUIPC_Write of 36 bytes. Otherwise each separate write is making a change in FSX. All the vlaues need to be written at once, in one structure.

I receive a structure with my socket, but how to write the FSUIPC_Write() ? With what offset ?

Have you any documentation for your compiler or the language?

Yes, but I can not translate everything. I use C for this work.

You think the conversion (altitude,latitude,longitude) are correct ? or not optimized ?

Thank you very much for your help

[Conversion problems ?]

My code

	double longitude;
	double latitude;
	double altitude;

	 int intLogB=0;
	 int intLogH=0;
	 double logB=0;
	 double logH=0;


	 int intLatB=0;
	 int intLatH=0;
	 double latB=0;
	 double latH=0;


	 int intAltH=0;
	 int intAltB=0;
	 double doubleAltH=0;
	 double doubleAltB=0;
	 double doubleAlt=0;



			   	 //Calcul altitude
						doubleAltB=modf(doubleAlt,&doubleAltH);
						intAltH=doubleAltH;
						doubleAltB=doubleAltB*1000;
						intAltB=doubleAltB;
						//intAltB=5;

					//Calculs longitude
						longitude=longitude/(360.0/(65536.0 * 65536.0));
						logB=modf(longitude,&logH);
						logB=logB*(65536.0*65536.0);

						v=modf(logB,&logB);

						intLogB=logB;
						intLogH=logH;

					//Calculs latitude
						latitude=latitude/(90.0/10001750.0);
						latB=modf(latitude,&latH);
						latB=latB*(65536.0*65536.0);

						v=modf(latB,&latB);

						intLatB=latB;
						intLatH=latH;

					  ( ... )

						  //Angles
							FSUIPC_Write(0x0578,4,&intPitch,&dwResult);
							FSUIPC_Write(0x057C,4,&intBank,&dwResult);
							FSUIPC_Write(0x0580,4,&intHead,&dwResult);

				   	 //Latitude
							FSUIPC_Write(0x0560,4,&intLatB,&dwResult);
							FSUIPC_Write(0x0564,4,&intLatH,&dwResult);

						//Longitude
							FSUIPC_Write(0x056C,4,&intLogH,&dwResult);
							FSUIPC_Write(0x0568,4,&intLogB,&dwResult);

						//Altitude
							FSUIPC_Write(0x0570,4,&intAltB,&dwResult);
							FSUIPC_Write(0x0574,4,&intAltH,&dwResult);

							FSUIPC_Process(&dwResult);
[/CODE]

You should try to equal the frame rate of FS, otherwise it will certainly be jerky.

I think I have solved this problem. But when I fly near the ground I see the plane moving from left to right in jerking. So I think the latitude, altitude and longitude are the problem.

And in any case you should write this as one 8-byte integer. If your compiler doesn't support "long long" or 2_int64" types (64-bit integers), the make the one 64-bit value with a two DWORD array.

Sorry but i don't understand everything, can you give me an example?

Thank you for your help,

Rémi

[Conversion problems ?]

Hi Pete

Sorry for my bad English, i'm a young French student in computer science.

I use FSUIPC for my professional training, indeed i have to replace the old visualization program of a flight simulator (FlightGear) by Flight Simulator X.

For this work I use 2 Thread. The first thread receives data through a socket and the second write with FSUIPC.

The server converts data and send this one with the socket.

I use 32-bit PC and i have little problem of fluidity image. I think it's because of conversion.

Example of latitude :

    int intLatB=0;
    int intLatH=0;
    double latB=0;
    double latH=0;
    double latitude;

// --------------------------------------------------------------------------------

                   	 latitude=latitude/(90.0/10001750.0);
                        latB=modf(latitude,&latH);
                        latB=latB*(65536.0*65536.0);

                        v=modf(latB,&latB);

                        intLatB=latB;
                        intLatH=latH;

					 ( ... )

					   //Latitude
                            FSUIPC_Write(0x0560,4,&intLatB,&dwResult);
                            FSUIPC_Write(0x0564,4,&intLatH,&dwResult);

// --------------------------------------------------------------------------------
[/CODE]

This is correct? Or you have another idea?

Thank you in advance for your help and sorry again for my very bad English.

Regards,

Rémi