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1a74d811f7
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Merges full history from art-dag/mono.git into the monorepo under the artdag/ directory. Contains: core (DAG engine), l1 (Celery rendering server), l2 (ActivityPub registry), common (shared templates/middleware), client (CLI), test (e2e). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> git-subtree-dir: artdag git-subtree-mainline:1a179de547git-subtree-split:4c2e716558
25 lines
935 B
Common Lisp
25 lines
935 B
Common Lisp
;; Outline effect - shows only edges
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(require-primitives "image")
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(define-effect outline
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:params (
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(thickness :type int :default 2 :range [1 10])
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(threshold :type int :default 100 :range [20 300])
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(color :type list :default (list 0 0 0)
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)
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(fill_mode "original"))
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(let* ((edge-img (image:edge-detect frame (/ threshold 2) threshold))
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(dilated (if (> thickness 1)
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(dilate edge-img thickness)
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edge-img))
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(base (cond
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((= fill_mode "original") (copy frame))
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((= fill_mode "white") (make-image (image:width frame) (image:height frame) (list 255 255 255)))
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(else (make-image (image:width frame) (image:height frame) (list 0 0 0))))))
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(map-pixels base
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(lambda (x y c)
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(let ((edge-val (luminance (pixel dilated x y))))
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(if (> edge-val 128)
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color
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c))))))
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