@@ -410,3 +410,31 @@ SObjectizer supports not only the Actor Model but also the Publish-Subscribe
Model and CSP-like channels. The goal of SObjectizer is to simplify
development of concurrent and multithreaded applications in C++.")
(license license:bsd-3)))
+
+(define-public tweeny
+ (package
+ (name "tweeny")
+ (version "3")
+ (source
+ (origin
+ (method git-fetch)
+ (uri (git-reference
+ (url "https://github.com/mobius3/tweeny.git")
+ (commit (string-append "v" version))))
+ (file-name (git-file-name name version))
+ (sha256
+ (base32
+ "1adm4c17pi7xf3kf6sjyxibz5rdg1ka236p72xsm6js4j9gzlbp4"))))
+ (arguments '(#:tests? #f)) ; no check target
+ (build-system cmake-build-system)
+ (home-page "https://mobius3.github.io/tweeny/")
+ (synopsis "Modern C++ tweening library")
+ (description "@code{Tweeny} is an inbetweening library designed for the
+creation of complex animations for games and other beautiful interactive
+software. It leverages features of modern @code{C++} to empower developers with
+an intuitive API for declaring tweenings of any type of value, as long as they
+support arithmetic operations. The goal of @code{Tweeny} is to provide means to
+create fluid interpolations when animating position, scale, rotation, frames or
+other values of screen objects, by setting their values as the tween starting
+point and then, after each tween step, plugging back the result.")
+ (license license:expat)))