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;;
;; starlet/snap-transition.scm
;;
;; Copyright © 2021 Thomas White <taw@bitwiz.org.uk>
;;
;; This file is part of Starlet.
;;
;; Starlet is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;
(define-module (starlet snap-transition)
#:use-module (oop goops)
#:use-module (starlet playback)
#:use-module (starlet state)
#:use-module (starlet transition-effect)
#:export (snap))
(define (snap)
(make-transition
(incoming-state current-state clock)
(let ((overlay-state (make-empty-state)))
(state-for-each
(lambda (fix attr val)
(set-in-state! overlay-state
fix
attr
(lambda () val)))
incoming-state)
(values overlay-state 0))))
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