Sha256: 78af1cbb7511da3975cdfdc1f8873b263f033d034c955872cca1588ec8dbd6dc
Contents?: true
Size: 1.22 KB
Versions: 6
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Stored size: 1.22 KB
Contents
#!/usr/bin/env ruby -w
require 'rmagick'
imgl = Magick::ImageList.new
imgl.new_image(400, 300, Magick::HatchFill.new('white', 'lightcyan2'))
gc = Magick::Draw.new
# Draw Bezier curve
gc.stroke('red')
gc.stroke_width(2)
gc.fill_opacity(0)
gc.bezier(50, 150, 50, 50, 200, 50, 200, 150, 200, 250, 350, 250, 350, 150)
# Draw filled circles for the control points
gc.fill('gray50')
gc.stroke('gray50')
gc.fill_opacity(1)
gc.circle(50, 50, 53, 53)
gc.circle(200, 50, 203, 53)
gc.circle(200, 250, 203, 253)
gc.circle(350, 250, 353, 253)
# Draw circles on the points the curve passes through
gc.fill_opacity(0)
gc.circle(50, 150, 53, 153)
gc.circle(200, 150, 203, 153)
gc.circle(350, 150, 353, 153)
# Draw the gray lines between points and control points
gc.line(50, 50, 50, 150)
gc.line(200, 50, 200, 250)
gc.line(350, 150, 350, 250)
# Annotate
gc.font_weight(Magick::NormalWeight)
gc.font_style(Magick::NormalStyle)
gc.fill('black')
gc.stroke('transparent')
gc.text(30, 170, "'50,150'")
gc.text(30, 40, "'50,50'")
gc.text(180, 40, "'200,50'")
gc.text(210, 155, "'200,150'")
gc.text(180, 270, "'200,250'")
gc.text(330, 270, "'350,250'")
gc.text(330, 140, "'350,150'")
gc.draw(imgl)
imgl.border!(1, 1, 'lightcyan2')
imgl.write('cbezier6.gif')
exit
Version data entries
6 entries across 6 versions & 1 rubygems