Module: Drakkon::Images::SpriteSheetCombine

Defined in:
lib/drakkon/lib/images/spritesheet.rb

Overview

General Image Index Helper

Class Method Summary collapse

Class Method Details

.dimensions(_file) ⇒ Object 



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# File 'lib/drakkon/lib/images/spritesheet.rb', line 77

def self.dimensions(_file)
  # img = MiniMagick::Image.open(file)

  # {
  #   w: img.width,
  #   h: img.height
  # }

  index = images.map do |img|
    image_size(img)
  end

  w = index.max_by(&:w).w
  h = index.max_by(&:h).h

  { w: w, h: h }
end

.image_size(file) ⇒ Object 



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# File 'lib/drakkon/lib/images/spritesheet.rb', line 95

def self.image_size(file)
  # LogBot.info('Image Biggest', file)
  img = MiniMagick::Image.open(file)

  {
    w: img.width,
    h: img.height
  }
end

.images ⇒ Object 



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# File 'lib/drakkon/lib/images/spritesheet.rb', line 105

def self.images
  @images ||= sorted_images
end

.process(img_name, grid) ⇒ Object 



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# File 'lib/drakkon/lib/images/spritesheet.rb', line 55

def self.process(img_name, grid)
  LogBot.info('Image Spritesheet', img_name)

  # Find Largest
  img = dimensions(images)
  img_name += '.png'

  LogBot.info('Image Spritesheet', "Dimensions: #{img[:w]}x#{img[:h]}")

  montage = MiniMagick::Tool::Montage.new
  images.each do |imgn|
    montage << imgn
  end

  montage.geometry "#{img.w}x#{img.h}+0+0"
  montage.tile grid unless grid.nil?
  montage.background 'none'
  montage << "#{Dir.pwd}/#{img_name}"

  montage.call
end

.prompt ⇒ Object 



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# File 'lib/drakkon/lib/images/spritesheet.rb', line 117

def self.prompt
  TTY::Prompt.new(active_color: :cyan, interrupt: :exit)
end

.run!(args = []) ⇒ Object 



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# File 'lib/drakkon/lib/images/spritesheet.rb', line 5

def self.run!(args = [])
  # All images exist?
  unless images.all? { |x| File.exist?(x) } ||
         LogBot.fatal('SpriteSheetCombine', 'Invalid Images - Files must be numbered. e.g. 1.png, 2.png, 3.png')
    exit 1
  end

  img_name = if args.empty?
               prompt.ask('New File Name? (e.g. rawr): ')
             else
               args.shift
             end

  grid = if args.empty?
           prompt.ask('Grid? (WxH: e.g. 1x1, blank will leave up to ImageMagick): ')
         else
           args.shift
         end

  # Safety
  img_name ||= 'rawr'

  puts <<~HELP
            Usage
            - Run in the directory you wish to modify the images
            - Images must be numbered so that the spritesheet can be created correctly

    Images:
  HELP

  images.each do |img|
    img_s = img.gsub("#{Dir.pwd}/", '').pastel(:yellow)
    puts "  - #{img_s}"
  end

  puts <<~OPTIONS
    Image Target: #{img_name.inspect}, Grid: #{grid.inspect}
    Current Directory;
    	#{Dir.pwd.pastel(:yellow)}
  OPTIONS

  puts

  exit unless prompt.yes? "#{'Are you sure?'.pastel(:bright_yellow)} Combine?"

  process(img_name, grid)
rescue TTY::Reader::InputInterrupt
  exit 0
end

.sorted_images ⇒ Object 



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# File 'lib/drakkon/lib/images/spritesheet.rb', line 109

def self.sorted_images
  numbers = Dir["#{Dir.pwd}/*.png"].map do |x|
    File.basename(x, '.png').to_i
  end

  numbers.sort.map { |x| "#{x}.png" }
end