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(define-module (starlet fixture-library arduino)
#:use-module (oop goops)
#:use-module (starlet base)
#:use-module (starlet colours)
#:export (<arduino-dmx-thing>))
;; This fixture class drives the RGB LED on the Arduino DMX shield
;; as described by Matthias Hertel at http://www.mathertel.de/Arduino/DMXShield.aspx
(define-class <arduino-dmx-thing> (<fixture>)
(attributes
#:init-form (list
(attr-continuous 'intensity '(0 100) 0)
(attr-colour 'colour white))))
(define-method (scanout-fixture (fixture <arduino-dmx-thing>)
get-attr set-chan8 set-chan16)
(let ((intensity (get-attr 'intensity))
(rgb (colour-as-rgb (get-attr 'colour))))
(set-chan8 1 (percent->dmxval8 (* intensity 0.01 (car rgb))))
(set-chan8 2 (percent->dmxval8 (* intensity 0.01 (cadr rgb))))
(set-chan8 3 (percent->dmxval8 (* intensity 0.01 (caddr rgb))))))
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