vectorMultiply

1.22

Hover & click on the images for description

Description

Description:

Multiplies an array of numbers by a scalar or another array of numbers.

2.14

Since 2.14 any count of numbers is valid, if one array is larger than the other, the remaining elements are inserted without change.
Before 2.14, the first argument had to be vector 3D, or 2.00 2D (Which still returned 3D result, with z coordinate defaulted to 0)

Groups:

Math - Vectors

Syntax

Syntax:

numArray vectorMultiply multiplier

Parameters:

numArray: Array of Numbers - an array of any size to be multiplied with the multiplier

multiplier: Number or 2.14 Array of Numbers

Return Value:

Array of Numbers

Examples

Example 1:

_newVector = [1,2,3] vectorMultiply 3; // returns [3,6,9]

Example 2:

[1,2,3,4] vectorMultiply [1,2,3,4]; // [1,4,9,16] [1,2,3,4] vectorMultiply 2; // [2,4,6,8] [1,2,3,4] vectorMultiply [2]; // [2,2,3,4] [2] vectorMultiply [1,2,3,4]; // [2,2,3,4] [1,2,3] vectorMultiply [1,2,3,4,5]; // [1,4,9,4,5]

Example 3:

private _eyePos = eyePos player; private _eyeDir = getCameraViewDirection player; // this is a normalized vector, i.e. its magnitude is 1 private _100mFurther = _eyeDir vectorMultiply 100; // since _eyeDir is normalised (length = 1m), multiplying it by 100 means 100m in that direction private _lookPos = _eyePos vectorAdd _100mFurther; // the position where player is looking 100m ahead

Example 4:

// Override firing to throw the player towards where he's aiming player allowDamage false; player addAction ["", { player setVelocity ((player weaponDirection "") vectorMultiply 20); }, "", 0, false, true, "DefaultAction"];

Additional Information

See also:

vectorAdd vectorDiff vectorCrossProduct vectorDotProduct vectorMagnitude matrixMultiply

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

ffur2007slx2_5 - c

Posted on Jun 28, 2014 - 08:21 (UTC)

1.22 Algorithm:

Vector = [x, y, z]; scalar = a; Result = [(x * a), (y * a), (z * a)];

It is recommended to use vectorMultiply instead of BIS_fnc_vectorMultiply. This is a very useful function, as it can be used with the velocity command to move an object from one position to another. (ie <vector1> to <vector2>) - ensure both positions are found using getPosASL.

_obj setVelocity (((getPosASL _target) vectorDiff (getPosASL _obj)) vectorMultiply 2);