Node that outputs a wavy value (Nuke)

Wavy

set cut_paste_input [stack 0]
version 7.0 v9
push $cut_paste_input
NoOp {
 name Wavy
 help "Node that outputs a wavy value"
 tile_color 0x873000ff
 selected true
 xpos -8
 ypos -77
 addUserKnob {20 User}
 addUserKnob {13 amplitude l Amplitude}
 amplitude {1 1 1}
 addUserKnob {13 frequency l Frequency}
 frequency {1 1 1}
 addUserKnob {13 offset l Offset}
 offset {0 0 0}
 addUserKnob {13 output l Output}
 output {{sin((frame+offset)*2*pi*frequency/24)*amplitude} {sin((frame+offset)*2*pi*frequency/24)*amplitude i} {sin((frame+offset)*2*pi*frequency/24)*amplitude i}}
}