Linear algebra library for 2D/3D graphics in Ruby.
Add this line to your application's Gemfile:
gem 'larb'And then execute:
bundle installOr install it yourself as:
gem install larbrequire 'larb'
# Vectors
v2 = Larb::Vec2.new(1, 2)
v3 = Larb::Vec3.new(1, 2, 3)
v4 = Larb::Vec4.new(1, 2, 3, 1)
# Vector operations
sum = v3 + Larb::Vec3.new(4, 5, 6)
dot = v3.dot(Larb::Vec3.new(1, 0, 0))
cross = v3.cross(Larb::Vec3.up)
normalized = v3.normalize
# Matrices
identity = Larb::Mat4.identity
translation = Larb::Mat4.translation(10, 20, 30)
rotation = Larb::Mat4.rotation_y(Math::PI / 4)
scale = Larb::Mat4.scaling(2, 2, 2)
# Matrix multiplication
transform = translation * rotation * scale
transformed_point = transform * v4
# Quaternions
quat = Larb::Quat.from_axis_angle(Larb::Vec3.up, Math::PI / 2)
rotated = quat * Larb::Vec3.new(1, 0, 0)
# Colors
red = Larb::Color.red
custom = Larb::Color.new(0.5, 0.3, 0.8, 1.0)
hex_color = Larb::Color.from_hex("#ff8800")# Install dependencies
bundle install
# Compile native extension
bundle exec rake compile
# Run tests
bundle exec rake testThe gem is available as open source under the terms of the MIT License.
