class Ev3dev::Image
Public Class Methods
new(*args)
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# File lib/ev3dev/image.rb, line 8 def initialize(*args) require 'RMagick' case args.size when 0 @image = Magick::Image.new(192, 128){ self.format = 'mono'} when 1 image_file = args.first if image_file.end_with?('.mono') @image = Magick::Image.read(image_file){ self.size = "192x128" }.first else @image = Magick::Image.read(image_file).first @image.format = 'mono' @image.resize_to_fill!(192, 128) end else raise "ArgumentError: wrong number of arguments 0 or 1" end end
Public Instance Methods
save(output_file)
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resize EV3 Screen(192 x 128) and .mono image format output file name should be ‘.mono’
# File lib/ev3dev/image.rb, line 31 def save(output_file) @image.write(output_file) @image.destroy! end
text(x, y, size, string)
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# File lib/ev3dev/image.rb, line 36 def text(x, y, size, string) draw = Magick::Draw.new draw.annotate(@image, 0, 0, x, y, string){self.pointsize = size} end