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Initial commit: video effects processing system

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Add S-expression based video effects pipeline with modular effect
definitions, constructs, and recipe files.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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gilesb
2026-01-19 12:34:45 +00:00
commit 406cc7c0c7
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sexp_effects/effects/swirl.sexp Normal file
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;; Swirl effect - spiral vortex distortion
;; @param strength float [-10, 10] default 1
;; @param radius float [0.1, 2] default 0.5
;; @param center_x float [0, 1] default 0.5
;; @param center_y float [0, 1] default 0.5
;; @param falloff string default "quadratic"
(define-effect swirl
((strength 1) (radius 0.5) (center_x 0.5) (center_y 0.5) (falloff "quadratic"))
(let* ((w (width frame))
(h (height frame))
(cx (* w center_x))
(cy (* h center_y))
(coords (swirl-displace w h strength radius cx cy falloff)))
(remap frame (coords-x coords) (coords-y coords))))