FB2Image
Convert Frame Buffer to Image (png, bmp..)
Installation
Add this line to your application's Gemfile:
gem 'fb2image'
And then execute:
$ bundle
Or install it yourself as:
$ gem install fb2image
Usage
require 'fb2image'
width = 100
height = 20
# make gradation rawdata
line = (0...width).map {|x| [x * 255 / width, 0, 0, 0] }
fb = ([line] * height).flatten
# initialize FB
fb = FB.new(width, height, fb, {
:bits_per_pixel => 32,
:red_shift => 0,
:green_shift => 8,
:blue_shift => 16
})
# create png
fb.write_png("tmp/gradation.png")
# create bmp
fb.write_bmp("tmp/gradation.bmp")
Contributing
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request