polygon.rb

# frozen_string_literal: true

require 'rmagick'

imgl = Magick::ImageList.new
imgl.new_image(290, 200, Magick::HatchFill.new('white', 'lightcyan2'))

gc = Magick::Draw.new
gc.stroke('blue').stroke_width(3)

# Draw red 5-pointed star
gc.fill('red')
gc.polygon(
  75, 37.5, 89.5, 80.5, 134.5, 80.5, 98.5, 107.5,
  111.5, 150.5,  75, 125, 38.5, 150.5, 51.5, 107.5,
  15.5, 80.5,    60.5, 80.5
)
# Draw green hexagon
gc.fill('lime')
gc.polygon(
  225, 37.5, 279, 68.75, 279, 131.25,
  225, 162.5, 171, 131.3, 171, 68.75
)

gc.draw(imgl)
imgl.border!(1, 1, 'lightcyan2')

imgl.write('polygon.gif')