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Second Life Creation

llVecMag

float llVecMag(vector Vector)

Returns the magnitude of the vector.

Parameters
Vector (vector)
Technical Details
  • Return Type: float
  • Energy: 10
default {
    state_entry()
    {
        vector input = <1.0,2.0,3.0>;
        llSay(0,"The magnitude of "+(string)input+" is "+(string)llVecMag(input) + ".");
    }
}

Notes

Section titled “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

Section titled “See Also”
  • [llVecNorm] - The vector normal
  • [llVecDist] - The distance between two vectors