>From f4529478acdbc6a139d952666ef732f4dbb21041 Mon Sep 17 00:00:00 2001 From: nixo Date: Sat, 15 Feb 2020 20:59:10 +0100 Subject: [PATCH 2/4] gnu: Add tweeny. * gnu/packages/cpp.scm (tweeny): New variable. --- gnu/packages/cpp.scm | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/gnu/packages/cpp.scm b/gnu/packages/cpp.scm index ae1e3e3356..8098553828 100644 --- a/gnu/packages/cpp.scm +++ b/gnu/packages/cpp.scm @@ -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))) -- 2.25.0