6ceaa37ab6
Implements ascii_fx_zone effect that allows applying arbitrary sexp effects to each character cell via cell_effect lambdas. Each cell is rendered as a small image that effects can operate on. Key changes: - New ascii_fx_zone effect with cell_effect parameter for per-cell transforms - Zone context (row, col, lum, sat, hue, etc.) available in cell_effect lambdas - Effects are now loaded explicitly from recipe declarations, not auto-loaded - Added effects_registry to plan for explicit effect dependency tracking - Updated effect definition syntax across all sexp effects - New run_staged.py for executing staged recipes - Example recipes demonstrating alternating rotation and blur/rgb_split patterns Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
19 lines
700 B
Common Lisp
19 lines
700 B
Common Lisp
;; Film Grain effect - adds film grain texture
|
|
|
|
(define-effect film_grain
|
|
:params (
|
|
(intensity :type float :default 0.2 :range [0 1])
|
|
(colored :type bool :default false)
|
|
)
|
|
(let ((grain-amount (* intensity 50)))
|
|
(map-pixels frame
|
|
(lambda (x y c)
|
|
(if colored
|
|
(rgb (clamp (+ (red c) (gaussian 0 grain-amount)) 0 255)
|
|
(clamp (+ (green c) (gaussian 0 grain-amount)) 0 255)
|
|
(clamp (+ (blue c) (gaussian 0 grain-amount)) 0 255))
|
|
(let ((n (gaussian 0 grain-amount)))
|
|
(rgb (clamp (+ (red c) n) 0 255)
|
|
(clamp (+ (green c) n) 0 255)
|
|
(clamp (+ (blue c) n) 0 255))))))))
|