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module Rubyvis
module SvgScene
def self.dot(scenes)
#e = scenes._g.elements[1]
e=scenes._g.get_element(1)
scenes.each_with_index {|s,i|
s = scenes[i];
# visible */
next if !s.visible
fill = s.fill_style
stroke = s.stroke_style
next if (fill.opacity==0 and stroke.opacity==0)
#/* points */
radius = s.shape_radius
path = nil
case s.shape
when 'cross'
path = "M#{-radius},#{-radius}L#{radius},#{radius}M#{radius},#{ -radius}L#{ -radius},#{radius}"
when "triangle"
h = radius
w = radius * 1.1547; # // 2 / Math.sqrt(3)
path = "M0,#{h}L#{w},#{-h} #{-w},#{-h}Z"
when "diamond"
radius=radius* Math::sqrt(2)
path = "M0,#{-radius}L#{radius},0 0,#{radius} #{-radius},0Z";
when "square"
path = "M#{-radius},#{-radius}L#{radius},#{-radius} #{radius},#{radius} #{-radius},#{radius}Z"
when "tick"
path = "M0,0L0,#{-s.shapeSize}"
when "bar"
path = "M0,#{s.shape_size / 2.0}L0,#{-(s.shapeSize / 2.0)}"
end
#/* Use <circle> for circles, <path> for everything else. */
svg = {
"shape-rendering"=> s.antialias ? nil : "crispEdges",
"pointer-events"=> s.events,
"cursor"=> s.cursor,
"fill"=> fill.color,
"fill-opacity"=> (fill.opacity==0) ? nil : fill.opacity,
"stroke"=> stroke.color,
"stroke-opacity"=> (stroke.opacity==0) ? nil : stroke.opacity,
"stroke-width"=> (stroke.opacity!=0) ? s.line_width / self.scale : nil
}
if (path)
svg["transform"] = "translate(#{s.left},#{s.top})"
if (s.shape_angle)
svg["transform"] += " rotate(#{180 * s.shape_angle / Math.PI})";
end
svg["d"] = path
e = self.expect(e, "path", svg);
else
svg["cx"] = s.left;
svg["cy"] = s.top;
svg["r"] = radius;
e = self.expect(e, "circle", svg);
end
e = self.append(e, scenes, i);
}
return e
end
end
end
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