406cc7c0c7
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>
15 lines
560 B
Common Lisp
15 lines
560 B
Common Lisp
;; Fisheye effect - barrel/pincushion lens distortion
|
|
;; @param strength float [-1, 1] default 0.3
|
|
;; @param center_x float [0, 1] default 0.5
|
|
;; @param center_y float [0, 1] default 0.5
|
|
;; @param zoom_correct bool default true
|
|
|
|
(define-effect fisheye
|
|
((strength 0.3) (center_x 0.5) (center_y 0.5) (zoom_correct true))
|
|
(let* ((w (width frame))
|
|
(h (height frame))
|
|
(cx (* w center_x))
|
|
(cy (* h center_y))
|
|
(coords (fisheye-displace w h strength cx cy zoom_correct)))
|
|
(remap frame (coords-x coords) (coords-y coords))))
|