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Versions: 52
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Stored size: 1.12 KB
Contents
#! /usr/local/bin/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.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
52 entries across 52 versions & 1 rubygems