vectorCrossProduct: Difference between revisions

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|r1= [[Array]] -  vector [x, y, z]
|r1= [[Array]] -  vector [x, y, z]
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[[Image:crossProduct.jpg|300px]]
[[File:crossProduct.jpg|300px]]


|x1= <sqf>_vector = [1,1,1] vectorCrossProduct [2,2,2];</sqf>
|x1= <sqf>_vector = [1,1,1] vectorCrossProduct [2,2,2];</sqf>

Revision as of 23:11, 20 November 2023

Hover & click on the images for description

Description

Description:
Cross product of two 3D vectors.
In layman's terms, if you have a polygon (surface) defined by 3 points, you can find a normal to it (just like terrain surfaceNormal). To invert direction of the normal, swap arguments around.
Groups:
Math - Vectors

Syntax

Syntax:
vector1 vectorCrossProduct vector2
Parameters:
vector1: Array - in form [x, y, z] or 2D (since Arma 3 v2.00, z coordinate is defaulted to 0)
vector2: Array - in form [x, y, z] or 2D (since Arma 3 v2.00, z coordinate is defaulted to 0)
Return Value:
Array - vector [x, y, z]

crossProduct.jpg

Examples

Example 1:
_vector = [1,1,1] vectorCrossProduct [2,2,2];
Example 2:
_vectorUp = [0,1,0] vectorCrossProduct [-1,0,0]; //[0,-0,1]
Example 3:
_vectorSide = (vectorDir player) vectorCrossProduct (vectorUp player);

Additional Information

See also:
vectorAdd vectorDiff vectorDotProduct vectorCos vectorMagnitude vectorMagnitudeSqr vectorMultiply vectorDistance vectorDistanceSqr vectorDir vectorUp setVectorDir setVectorUp setVectorDirAndUp vectorNormalized vectorFromTo matrixMultiply matrixTranspose

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 - 09:12 (UTC)
Arma 3 logo black.png1.22Algorithm:
Vector1 = [x1,y1,z1]; Vector2 = [x2,y2,z2]; Result = [(y1 * z2) - (z1 * y2),(z1 * x2) - (x1 * z2),(x1 * y2) - (y1 * x2)];
It is recommended to use vectorCrossProduct instead of BIS_fnc_crossProduct.