def draw(svg, coords, options={})
svg.g(:class => 'shadow', :transform => "translate(#{relative(0.5)}, #{relative(0.5)})") {
svg.polyline( :points => stringify_coords(coords).join(' '), :fill => 'transparent',
:stroke => 'black', 'stroke-width' => relative(2),
:style => 'fill-opacity: 0; stroke-opacity: 0.35' )
coords.each { |coord| svg.circle( :cx => coord.first, :cy => coord.last + relative(0.9), :r => relative(2),
:style => "stroke-width: #{relative(2)}; stroke: black; opacity: 0.35;" ) }
}
svg.polyline( :points => stringify_coords(coords).join(' '), :fill => 'none',
:stroke => color.to_s, 'stroke-width' => relative(2) )
coords.each { |coord| svg.circle( :cx => coord.first, :cy => coord.last, :r => relative(2),
:style => "stroke-width: #{relative(2)}; stroke: #{color.to_s}; fill: #{color.to_s}" ) }
end