Contents

require 'test/unit'
require 'lib/camellia'
include Camellia
class TestMask < Test::Unit::TestCase
  def test_mask
    source=CamImage.new
    # load picture chess.pgm
    source.load_pgm("resources/chess.pgm")
    mask=CamImage.new(source.width,source.height)
    # draw a filled circle in mask
    mask.set!(0)
    mask.draw_circle(mask.width/2,mask.height/2,50,255)
    n=mask.fill_color(mask.width/2,mask.height/2,255)
    assert_equal(n,7837) # number of pixels filled with color
    # encode the mask and associate it to the source image
    encoded_mask=mask.encode
    source.mask=encoded_mask
    encoded_mask.inverse!
    dest=CamImage.new
    source.copy(dest) # copies only the mask! not like dup or clone!
    # and then compute a sobel inside
    encoded_mask.inverse!
    b=source.sobel_v_abs(dest) # sobel only on the mask 
    dest.save_pgm("output/ruby_chess_sobel_mask.pgm")
    # checking types
    assert_equal(source.class,Camellia::CamImage)
    assert_equal(encoded_mask.class,Camellia::CamRLEImage)

    # use a non compressed mask
    source.mask=mask
    source.set!(0)
    source.save_pgm("output/ruby_chess_hole.pgm");
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
camellia-2.7.0-i386-mswin32	test/test_mask.rb
camellia-2.5.10-i486-linux	test/test_mask.rb
camellia-2.7.0-x86-linux	test/test_mask.rb