BIS fnc dirTo: Difference between revisions

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|gr1= Geometry
|gr1= Geometry


|descr= Function which returns vector direction from pos1 to pos2. {{Feature|arma3|In Arma 3 use {{ic|obj1 [[getDir]] obj2}} instead of [[BIS_fnc_dirTo]]!}}
|descr= Function which returns vector direction from pos1 to pos2.
{{Feature|arma3|Use <sqf inline>obj1 getDir obj2</sqf> instead of [[BIS_fnc_dirTo]].}}


|s1= [param1, param2] call [[BIS_fnc_dirTo]]
|s1= [param1, param2] call [[BIS_fnc_dirTo]]
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|p1= param1 - vector starting point, [[Position]] '''or''' [[Object]]
|p1= param1 - vector starting point, [[Position]] '''or''' [[Object]]


|p2= param1 - vector ending point, [[Position]] '''or''' [[Object]]
|p2= param2 - vector ending point, [[Position]] '''or''' [[Object]]


|r1= [[Number]]
|r1= [[Number]]


|x1= sets unit1 in the direction of unit2
|x1= sets unit1 in the direction of unit2
<sqf>unit1 setDir [unit1, unit2] call BIS_fnc_dirTo</sqf>
<sqf>unit1 setDir ([unit1, unit2] call BIS_fnc_dirTo);</sqf>


|seealso= [[getDir]] [[setDir]]
|seealso= [[getDir]] [[setDir]]
}}
}}
||||


<dl class="command_description">
{{Note
 
|user= AgentRev
<dt></dt>
|timestamp= 20150121142000
<dd class="notedate">Posted on January 21, 2015 - 14:20 (UTC)</dd>
|text= Be careful when using this function in conjunction with [[BIS_fnc_rotateVector2D]], which rotates vectors counterclockwise as per trigonometric conventions, while [[BIS_fnc_dirTo]] returns a clockwise angle.<br>
<dt class="note">[[User:AgentRev|AgentRev]]</dt>
<dd class="note">
Be careful when using this function in conjunction with [[BIS_fnc_rotateVector2D]], which rotates vectors counterclockwise as per trigonometric conventions, while [[BIS_fnc_dirTo]] returns a clockwise angle.
<br>
To counter this, simply negate the output of [[BIS_fnc_dirTo]]:
To counter this, simply negate the output of [[BIS_fnc_dirTo]]:
 
<sqf>[0,1,0], -([_unit, _vehicle] call BIS_fnc_dirTo)] call BIS_fnc_rotateVector2D;</sqf>
<code>[<nowiki>[0,1,0]</nowiki>, '''-('''[_unit, _vehicle] [[call]] [[BIS_fnc_dirTo]]''')'''] [[call]] [[BIS_fnc_rotateVector2D]];</code>
}}
</dd>
 
</dl>

Latest revision as of 15:37, 13 July 2022

Logo A2.png1.00A2 OA Logo.png1.50tkoh logo small.png1.00Arma 3 logo black.png0.50
Hover & click on the images for description

Description

Description:
Function which returns vector direction from pos1 to pos2.
Arma 3
Use obj1 getDir obj2 instead of BIS_fnc_dirTo.
Execution:
call
Groups:
Geometry

Syntax

Syntax:
[param1, param2] call BIS_fnc_dirTo
Parameters:
param1 - vector starting point, Position or Object
param2 - vector ending point, Position or Object
Return Value:
Number

Examples

Example 1:
sets unit1 in the direction of unit2
unit1 setDir ([unit1, unit2] call BIS_fnc_dirTo);

Additional Information

See also:
getDir setDir

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
AgentRev - c
Posted on Jan 21, 2015 - 14:20 (UTC)
Be careful when using this function in conjunction with BIS_fnc_rotateVector2D, which rotates vectors counterclockwise as per trigonometric conventions, while BIS_fnc_dirTo returns a clockwise angle.
To counter this, simply negate the output of BIS_fnc_dirTo:
[0,1,0], -([_unit, _vehicle] call BIS_fnc_dirTo)] call BIS_fnc_rotateVector2D;
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