diff options
Diffstat (limited to 'guile/starlet')
| -rw-r--r-- | guile/starlet/base.scm | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/guile/starlet/base.scm b/guile/starlet/base.scm index f0ca621..dc683e5 100644 --- a/guile/starlet/base.scm +++ b/guile/starlet/base.scm @@ -379,16 +379,18 @@ ;; Helper function to set 8-bit DMX value (define (set-chan relative-channel-number value) + (when value (set-dmx (get-fixture-universe fix) (+ (get-fixture-addr fix) (- relative-channel-number 1)) - value)) + value))) ;; Helper function to set 16-bit DMX value (define (set-chan-16bit relative-channel-number value max-value) - (let ((val16 (* (min value max-value) (/ 65535 max-value)))) - (set-chan relative-channel-number (msb val16)) - (set-chan (+ relative-channel-number 1) (lsb val16)))) + (when value + (let ((val16 (* (min value max-value) (/ 65535 max-value)))) + (set-chan relative-channel-number (msb val16)) + (set-chan (+ relative-channel-number 1) (lsb val16))))) (scanout-fixture fix get-attr set-chan set-chan-16bit)) |