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require File.dirname(__FILE__) + '/base'
class Gruff::Bezier < Gruff::Base
def draw
super
return unless @has_data
@x_increment = @graph_width / (@column_count - 1).to_f
@norm_data.each do |data_row|
poly_points = Array.new
@d = @d.fill data_row[DATA_COLOR_INDEX]
data_row[1].each_with_index do |data_point, index|
# Use incremented x and scaled y
new_x = @graph_left + (@x_increment * index)
new_y = @graph_top + (@graph_height - data_point * @graph_height)
if index == 0 && RUBY_PLATFORM != 'java'
poly_points << new_x
poly_points << new_y
end
poly_points << new_x
poly_points << new_y
draw_label(new_x, index)
end
@d = @d.fill_opacity 0.0
@d = @d.stroke data_row[DATA_COLOR_INDEX]
@d = @d.stroke_width clip_value_if_greater_than(@columns / (@norm_data.first[1].size * 4), 5.0)
if RUBY_PLATFORM == 'java'
@d = @d.polyline(*poly_points)
else
@d = @d.bezier(*poly_points)
end
end
@d.draw(@base_image)
end
end
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