vle-vector-iszerolength


(vle-vector-iszerolength  vec)

This function returns whether vec has a length of 0.0 (zero length).

Arguments

vec  a 2d or 3d vector list

Return

T or NIL

Example

(setq vec '(1 1 0))
(vle-vector-iszerolength v1 v2)
NIL

(setq vec '(0 0 0))
(vle-vector-iszerolength v1 v2)
T

Remarks

if vec is interpreted as point, then it compares as "equal to point (0 0 0)"


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