vle-vector-isunitlength


(vle-vector-isunitlength  vec)

This function returns whether vec has a length of 1.0 (1 unit length).

Arguments

vec  a 2d or 3d vector list

Return

T or NIL

Example

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

(setq vec '(0 1 0))
(vle-vector-isunitlength v1 v2)
T

Remarks




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