Squashed 'l1/' content from commit 670aa58

git-subtree-dir: l1
git-subtree-split: 670aa582df99e87fca7c247b949baf452e8c234f

sexp_effects/effects/zoom.sexp

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+;; Zoom effect - zooms in/out from center
+(require-primitives "geometry")
+
+(define-effect zoom
+  :params (
+    (amount :type int :default 1 :range [0.1 5])
+  )
+  (geometry:scale-img frame amount amount))