LlVecMag

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Return value notes

Returns a float that is the magnitude of the vector (the undirected non-negative distance from vec to <0.0, 0.0, 0.0>).

Examples

default {
    state_entry()
    {
        vector input = <1.0,2.0,3.0>;
        llSay(0,"The magnitude of "+(string)input+" is "+(string)llVecMag(input) + ".");
    }
}

Notes

Mathematically the formula for vector magnitude is
- llSqrt(vec.x * vec.x + vec.y * vec.y + vec.z * vec.z)
Knowing this, there are ways to circumvent llVecMag for more efficient code.
- vec*vec < 16.0 is over twice as fast as llVecMag(vec) < 4.0.
- vec*vec < (dist*dist) is about twice as fast as llVecMag(vec) < dist.
- This can work in many other ways, too, with other comparisons.

See also: functions

Original wiki source

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