BIS_fnc_rotateVector2D

Arma 3 v0.50
First in Arma 2 v1.00

Function · Markdown · JSON · original wiki page

Description

This function returns a 2D vector rotated a specified number of degrees around the origin.

Syntax

[vector2D, angle] call BIS_fnc_rotateVector2D

Parameters:

vector2D: Array - 2D vector
angle: Number - angle in degree

Returns: Array - new vector

Examples

Example 1

[[5,3], 60] call BIS_fnc_rotateVector2D;//Returns[-0.0980766,5.83013]

Community notes

AgentRev

2015-01-21

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;