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...that holds the direction and distance between two points. In other words, it produces exactly the same result as substracting the points' coordinates an <syntaxhighlight lang="lua">float getDistanceBetweenPoints2D ( float x1, float y1, float x2, float y2 )</syntaxhighlight>

This function takes two sets of XYZ coordinates. It returns the 3D direction from point A to point B. This can for example be u local rotx = math.atan2 (z2 - z1, getDistanceBetweenPoints2D (x2, y2, x1, y1))