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Contents
module Prawn
module Graph
module Charts
module Legacy
class Line < Prawn::Graph::Charts::Legacy::Base
private
def plot_values
base_x = @grid.start_x + 1
base_y = @grid.start_y + 1
p = [ [base_x, base_y] ]
bar_width = calculate_bar_width
@document.line_width bar_width
last_position = base_x + bar_width
point_spacing = calculate_plot_spacing
@values.each do |value|
@document.move_to [base_x + last_position, base_y]
bar_height = calculate_point_height_from value
point = [base_x + last_position, base_y + bar_height]
p << point
@document.fill_color @theme.series.last
@document.fill_circle_at point, :radius => 1
last_position += point_spacing
end
@document.line_width 2
@document.stroke_color @theme.series.last
p.each_with_index do |point,i|
next if point == p.last
@document.move_to point
@document.stroke_line_to p[i+1]
end
end
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems