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Versions: 16
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Contents
require "RMagick"
def draw_centers(img, all_four = true)
gc = Magick::Draw.new
gc.fill("white")
gc.stroke("black")
gc.circle(30, 10, 30, 12)
gc.circle(10, 80, 10, 82)
gc.circle(70, 60, 70, 62)
gc.circle(80, 20, 80, 22) if all_four
gc.draw(img)
img
end
imgl = Magick::ImageList.new
img = Magick::Image.new(100, 100)
begin
img2 = img.sparse_color(Magick::VoronoiColorInterpolate, 30, 10, "red",
10, 80, "blue", 70, 60, "lime", 80, 20, "yellow")
img2["Label"] = "Voroni"
imgl << draw_centers(img2)
img2 = img.sparse_color(Magick::ShepardsColorInterpolate, 30, 10, "red",
10, 80, "blue", 70, 60, "lime", 80, 20, "yellow")
img2["Label"] = "Shepards"
imgl << draw_centers(img2)
img2 = img.sparse_color(Magick::BilinearColorInterpolate, 30, 10, "red",
10, 80, "blue", 70, 60, "lime", 80, 20, "yellow")
img2["Label"] = "Bilinear"
imgl << draw_centers(img2)
img2 = img.sparse_color(Magick::BarycentricColorInterpolate, 30, 10, "red",
10, 80, "blue", 70, 60, "lime")
img2["Label"] = "Barycentric"
imgl << draw_centers(img2, false)
montage = imgl.montage do
self.background_color = "none"
self.geometry = "100x100+10+10"
self.tile = "2x2"
end
montage.write("sparse_color.png")
rescue NotImplementedError, NameError
img = Magick::Image.read("images/notimplemented.gif").first
img.resize!(240, 272)
img.write("sparse_color.png")
end
Version data entries
16 entries across 16 versions & 2 rubygems