vectorMultiply

1.22

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Description

Description:

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

Groups:

Math - Vectors

Syntax

Syntax:

numArray vectorMultiply multiplier

Parameters:

numArray: Array of Numbers - e.g vector 3D or 2.00 2D (the z coordinate is defaulted to 0)

multiplier: Number or (since ?) 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

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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);