Squashed 'l1/' content from commit 670aa58

git-subtree-dir: l1
git-subtree-split: 670aa582df99e87fca7c247b949baf452e8c234f

sexp_effects/effects/hue_shift.sexp

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+;; Hue shift effect - rotates hue values
+;; Uses vectorized shift-hsv primitive for fast processing
+
+(require-primitives "color_ops")
+
+(define-effect hue_shift
+  :params (
+    (degrees :type int :default 0 :range [0 360])
+    (speed :type int :default 0 :desc "rotation per second")
+  )
+  (let ((shift (+ degrees (* speed t))))
+    (color_ops:shift-hsv frame shift 1 1)))