Vector to degrees

[celery 8]

So what's the formula or command to turn a vectordir array into degrees?

[fasad 1]

edit^2 : getDir?

(sorry, got assignment to finish, acos/asin method will need more work than I can give it right now...)

[dr_eyeball 16]

Are you talking about a 2-dimensional vector or 3-dimensional vector (like vector dirs)?

For flat 2 dimensions, you can try something like this:

fnCalcAzimuth.sqf:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">// Desc: Calculate Azimuth between 2 (objects) positions

_posA = _this select 0;

_posB = _this select 1;

_Cx = _posA select 0;

_Cy = _posA select 1;

_Kx = _posB select 0;

_Ky = _posB select 1;

_dx = -(_Cx - _Kx);

_dy = -(_Cy - _Ky);

// Result is: -180 < Azimuth <= 180

_Azimuth = round(_dx atan2 _dy);

// adjust to compass angle: 0 <= Azimuth < 360

if (_Azimuth < 0) then

{

_Azimuth = 360+_Azimuth;

};

_Azimuth; // Result

[celery 8]

Thank you, that was what I was looking for!

But I have another problem regarding the use of this. My very limited brain capacity can't solve how to detect when the player's azimuth is matching another one in a limited arc. So that the player should be facing a certain direction inside a 90 degree arc, but the 360 degree scale is giving trouble when the arc crosses both ends.

[thy_ 132]

On 8/29/2007 at 9:31 PM, celery said:

So what's the formula or command to turn a vectordir array into degrees?

 

If someone need set a vehicle in the same direction of another object/marker but without use (brute force) setDir, here:

"This function sets the tracked vehicle in the same direction as the hold-marker set by the mission editor":