BIS fnc rotateVector2D: Difference between revisions
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{{Function|Comments= | {{Function|Comments= | ||
| arma2 |Game name= | | arma2 |Game name= | ||
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|gr1= Vectors |GROUP1= | |gr1= Vectors |GROUP1= | ||
| This function returns a 2D vector rotated a specified number of degrees around the origin. |Description= | | This function returns a 2D vector rotated a specified number of degrees around the origin. |Description= | ||
| [vector2D, angle] call [[BIS_fnc_rotateVector2D]] |Syntax= | | [vector2D, angle] call [[BIS_fnc_rotateVector2D]] |Syntax= | ||
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|exec= spawn |Execution= | |exec= spawn |Execution= | ||
---> | ---> | ||
|x1= <code>[ [5,3], 60 ] [[call]] [[BIS_fnc_rotateVector2D]];//Returns[-0.0980766,5.83013]</code>|Example 1= | |x1= <code>[ [5,3], 60 ] [[call]] [[BIS_fnc_rotateVector2D]];//Returns[-0.0980766,5.83013]</code>|Example 1= | ||
| [[BIS_fnc_crossProduct]], [[BIS_fnc_magnitudeSqr]], [[BIS_fnc_vectorFromXToY]] |See also= | | [[BIS_fnc_crossProduct]], [[BIS_fnc_magnitudeSqr]], [[BIS_fnc_vectorFromXToY]] |See also= | ||
Revision as of 23:48, 16 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
-
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Notes
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;