cubes.rb

def drawCube(x, y, scale = 1)
    print <<-EOS
<g stroke="black" fill="none" transform="matrix(#{scale},0,0,#{scale},#{x},#{y})">
<rect x="50" y="100" width="90" height="90" />
<rect x="50" y="130" width="90" height="30" />
<rect x="80" y="100" width="30" height="90" />

<line x1="50" y1="100" x2="95" y2="55"/>
<line x1="80" y1="100" x2="125" y2="55"/>
<line x1="110" y1="100" x2="155" y2="55"/>
<line x1="140" y1="100" x2="185" y2="55"/>
<line x1="140" y1="130" x2="185" y2="85"/>
<line x1="140" y1="160" x2="185" y2="115"/>
<line x1="140" y1="190" x2="185" y2="145"/>

<path d="M65,85 h90 v90" />
<path d="M80,70 h90 v90" />
<path d="M95,55 h90 v90" />
</g>
    EOS
end

print <<-EOS
<svg version="1.1"
     baseProfile="full"
     width="1000" height="1400"
     xmlns="http://www.w3.org/2000/svg">
    EOS

    for x in 0..4
        for y in 0..1
            drawCube(x * 200, y * 200);
        end
    end

    for x in 0..6
        for y in 0..4
            drawCube(x * 140, 400 + y * 140, 0.7);
        end
    end

print '</svg>'