BIS fnc rotateVector2D: Difference between revisions
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|p1= vector2D: [[Array]] - 2D vector | |p1= vector2D: [[Array]] - 2D vector | ||
|p2= angle: [[Number]] - | |p2= angle: [[Number]] - angle in degree | ||
|r1= [[Array]] - | |r1= [[Array]] - new vector | ||
|x1= <sqf>[ [5,3], 60 ] call BIS_fnc_rotateVector2D;//Returns[-0.0980766,5.83013]</sqf> | |x1= <sqf>[[5,3], 60] call BIS_fnc_rotateVector2D;//Returns[-0.0980766,5.83013]</sqf> | ||
|seealso= [[BIS_fnc_crossProduct]] [[BIS_fnc_magnitudeSqr]] [[BIS_fnc_vectorFromXToY]] | |seealso= [[BIS_fnc_crossProduct]] [[BIS_fnc_magnitudeSqr]] [[BIS_fnc_vectorFromXToY]] | ||
}} | }} | ||
{{Note | |||
|user= AgentRev | |||
|timestamp= 20150121141500 | |||
|text= 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.<br> | |||
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. | |||
<br> | |||
To counter this, simply negate their output: | To counter this, simply negate their output: | ||
<sqf> | |||
< | [[0,1,0], -(getDir _object)] call BIS_fnc_rotateVector2D; | ||
[[0,1,0], -([_unit, _vehicle] call BIS_fnc_dirTo)] call BIS_fnc_rotateVector2D; | |||
</ | </sqf> | ||
}} | |||
Latest revision as of 15:39, 8 November 2023
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:
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
- Posted on Jan 21, 2015 - 14:15 (UTC)
-
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: