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giles
2026-02-24 23:10:04 +00:00
parent 1862fe96fc c590f2e039
commit 5173167f3e
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test/sexp_effects/effects/kaleidoscope.sexp Normal file
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;; Kaleidoscope effect - mandala-like symmetry patterns
(require-primitives "geometry" "image")
(define-effect kaleidoscope
:params (
(segments :type int :default 6 :range [3 16])
(rotation :type int :default 0 :range [0 360])
(rotation_speed :type int :default 0 :range [-180 180])
(center_x :type float :default 0.5 :range [0 1])
(center_y :type float :default 0.5 :range [0 1])
(zoom :type int :default 1 :range [0.5 3])
)
(let* ((w (image:width frame))
(h (image:height frame))
(cx (* w center_x))
(cy (* h center_y))
;; Total rotation including time-based animation
(total_rot (+ rotation (* rotation_speed (or _time 0))))
(coords (geometry:kaleidoscope-coords w h segments total_rot cx cy zoom)))
(geometry:remap frame (geometry:coords-x coords) (geometry:coords-y coords))))