Delaunay Tessellation from_image

from_image.jl

import VoronoiDelaunay: Point2D, DelaunayTessellation, push!


# Create DelaunayTessellation with n points from an image
function from_image(img, n)

    # placing points in places that represent the image
    pts = Point2D[]
    for i in 1:n
        x = rand()
        y = rand()
        if img[int64(floor(x*size(img)[1]))+1,int64(floor(y*size(img)[2]))+1].c.b > 0.5
            if rand() < 0.100
                push!(pts, Point2D(1.0+rand(),1.0+rand()))
            end
            continue
        end
        x /= 2
        y /= 2
        push!(pts, Point2D(1.0+x+0.3,2.0-y*2/3-0.3))
    end

    tess = DelaunayTessellation(n)
    push!(tess, pts)

    tess
end