vectorMultiply

1.22

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Description

Description:

Multiplies 3D vector by a scalar.

Groups:

Math - Vectors

Syntax

Syntax:

vector vectorMultiply scalar

Parameters:

vector: Array - vector 3D or 2D (since Arma 3 v2.00, z coordinate is defaulted to 0)

scalar: Number

Return Value:

Array

Examples

Example 1:

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

Example 2:

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 normalized, multiplying it by 100 means 100 m in that direction private _lookPos = _eyePos vectorAdd _100mFurther; // the position where player is looking 100m ahead

Additional Information

See also:

vectorAdd vectorDiff vectorCrossProduct vectorDotProduct vectorCos vectorMagnitude vectorMagnitudeSqr vectorDistance vectorDistanceSqr vectorDir vectorUp setVectorDir setVectorUp setVectorDirAndUp vectorNormalized vectorFromTo matrixMultiply matrixTranspose

Notes

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Posted on 28 Jun, 2014

ffur2007slx2_5

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);