BIS fnc rotateVector2D: Difference between revisions
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{{Function | {{Function | ||
| arma2 | | arma2 | ||
|1.00 | |1.00 | ||
|gr1= Vectors | |gr1= Vectors | ||
| This function returns a 2D vector rotated a specified number of degrees around the origin. | | This function returns a 2D vector rotated a specified number of degrees around the origin. | ||
| [vector2D, angle] call [[BIS_fnc_rotateVector2D]] | | [vector2D, angle] call [[BIS_fnc_rotateVector2D]] | ||
|p1= vector2D: [[Array]] - 2D vector | |p1= vector2D: [[Array]] - 2D vector | ||
|p2= angle: [[Number]] - Angle in degree | |p2= angle: [[Number]] - Angle in degree | ||
| [[Array]] - New vector | | [[Array]] - New vector | ||
<!--- | <!--- | ||
| Line 23: | Line 23: | ||
---> | ---> | ||
|x1= <code>[ [5,3], 60 ] [[call]] [[BIS_fnc_rotateVector2D]];//Returns[-0.0980766,5.83013]</code> | |x1= <code>[ [5,3], 60 ] [[call]] [[BIS_fnc_rotateVector2D]];//Returns[-0.0980766,5.83013]</code> | ||
| [[BIS_fnc_crossProduct]], [[BIS_fnc_magnitudeSqr]], [[BIS_fnc_vectorFromXToY]] | | [[BIS_fnc_crossProduct]], [[BIS_fnc_magnitudeSqr]], [[BIS_fnc_vectorFromXToY]] | ||
}} | }} | ||
Revision as of 00:48, 18 January 2021
Description
- Description:
- This function returns a 2D vector rotated a specified number of degrees around the origin.
- Execution:
- call
- Groups:
- Vectors
Syntax
- Syntax:
- [vector2D, angle] call BIS_fnc_rotateVector2D
- Parameters:
- vector2D: Array - 2D vector
- angle: Number - Angle in degree
- Return Value:
- Array - New vector
Examples
- Example 1:
[ [5,3], 60 ] call BIS_fnc_rotateVector2D;//Returns[-0.0980766,5.83013]
Additional Information
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
Bottom Section
- Posted on January 21, 2015 - 14:15 (UTC)
- AgentRev
-
Be careful when using this function in conjunction with getDir or BIS_fnc_dirTo, which return a clockwise angle, while the rotation is done counterclockwise as per trigonometric conventions.
To counter this, simply negate their output:[[0,1,0], -(getDir _object)] call BIS_fnc_rotateVector2D;[[0,1,0], -([_unit, _vehicle] call BIS_fnc_dirTo)] call BIS_fnc_rotateVector2D;