Kiwi

A Crystal port of the Java implementation of the Cassowary constraint solving algorithm

In other words, this is an algorithm to calculate constraint based GUI layouts.

Installation

Add this to your application's shard.yml:

dependencies:
  kiwi:
    github: neutrinog/kiwi-crystal

Usage

require "kiwi"

solver = Kiwi::Solver.new
x = Kiwi::Variable.new("x")
solver.add_constraint(x + 2 == 20)
solver.update_variables
puts x.value # => 18

Benchmark

crystal run --release spec/benchmark.cr

Contributing

1. Fork it (https://github.com/neutrinog/kiwi-crystal/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• neutrinog Joel Lonbeck - creator, maintainer