Class: PhotoUtils::Tools::FocalLength

Inherits:
PhotoUtils::Tool show all
Defined in:
lib/photo_utils/tools/focal_length.rb

Instance Method Summary collapse

Methods inherited from PhotoUtils::Tool

#description, #initialize, #name, #usage

Constructor Details

This class inherits a constructor from PhotoUtils::Tool

Instance Method Details

#run ⇒ Object 



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# File 'lib/photo_utils/tools/focal_length.rb', line 9

def run
  from_focal_length, from_format = @args.shift.split(':')
  from_focal_length = from_focal_length.to_i
  from_format = (Format[from_format || '35'] or raise "Unknown format: #{from_format.inspect}")
  to_formats = @args.first ? @args.shift.split(',') : %w{1/1.7 APS-C APS-H 35 6x4.5 6x6 6x7 5x7}
  to_formats.map { |f| Format[f] or raise "Unknown format: #{f.inspect}" }.each do |to_format|
    scene = Scene.new
    scene.format = from_format
    puts "%10s: %6s" % [to_format.name, scene.format.focal_length_equivalent(from_focal_length, to_format)]
  end
end