+++ /dev/null
-
-require File.dirname(__FILE__) + '/base'
-
-# Experimental!!! See also the Spider graph.
-class Gruff::Net < Gruff::Base
-
- # Hide parts of the graph to fit more datapoints, or for a different appearance.
- attr_accessor :hide_dots
-
- def initialize(*args)
- super
-
- @hide_dots = false
- end
-
- def draw
-
- super
-
- return unless @has_data
-
- @radius = @graph_height / 2.0
- @center_x = @graph_left + (@graph_width / 2.0)
- @center_y = @graph_top + (@graph_height / 2.0) - 10 # Move graph up a bit
-
- @x_increment = @graph_width / (@column_count - 1).to_f
- circle_radius = clip_value_if_greater_than(@columns / (@norm_data.first[1].size * 2.5), 5.0)
-
- @d = @d.stroke_opacity 1.0
- @d = @d.stroke_width clip_value_if_greater_than(@columns / (@norm_data.first[1].size * 4), 5.0)
-
- if (defined?(@norm_baseline)) then
- level = @graph_top + (@graph_height - @norm_baseline * @graph_height)
- @d = @d.push
- @d.stroke_color @baseline_color
- @d.fill_opacity 0.0
- @d.stroke_dasharray(10, 20)
- @d.stroke_width 5
- @d.line(@graph_left, level, @graph_left + @graph_width, level)
- @d = @d.pop
- end
-
- @norm_data.each do |data_row|
- prev_x = prev_y = nil
- @d = @d.stroke data_row[DATA_COLOR_INDEX]
- @d = @d.fill data_row[DATA_COLOR_INDEX]
-
- data_row[1].each_with_index do |data_point, index|
- next if data_point.nil?
-
- rad_pos = index * Math::PI * 2 / @column_count
- point_distance = data_point * @radius
- start_x = @center_x + Math::sin(rad_pos) * point_distance
- start_y = @center_y - Math::cos(rad_pos) * point_distance
-
- next_index = index + 1 < data_row[1].length ? index + 1 : 0
-
- next_rad_pos = next_index * Math::PI * 2 / @column_count
- next_point_distance = data_row[1][next_index] * @radius
- end_x = @center_x + Math::sin(next_rad_pos) * next_point_distance
- end_y = @center_y - Math::cos(next_rad_pos) * next_point_distance
-
- @d = @d.line(start_x, start_y, end_x, end_y)
-
- @d = @d.circle(start_x, start_y, start_x - circle_radius, start_y) unless @hide_dots
- end
-
- end
-
- @d.draw(@base_image)
- end
-
-
- # the lines connecting in the center, with the first line vertical
- def draw_line_markers
- return if @hide_line_markers
-
-
- # have to do this here (AGAIN)... see draw() in this class
- # because this funtion is called before the @radius, @center_x and @center_y are set
- @radius = @graph_height / 2.0
- @center_x = @graph_left + (@graph_width / 2.0)
- @center_y = @graph_top + (@graph_height / 2.0) - 10 # Move graph up a bit
-
-
- # Draw horizontal line markers and annotate with numbers
- @d = @d.stroke(@marker_color)
- @d = @d.stroke_width 1
-
-
- (0..@column_count-1).each do |index|
- rad_pos = index * Math::PI * 2 / @column_count
-
- @d = @d.line(@center_x, @center_y, @center_x + Math::sin(rad_pos) * @radius, @center_y - Math::cos(rad_pos) * @radius)
-
-
- marker_label = labels[index] ? labels[index].to_s : '000'
-
- draw_label(@center_x, @center_y, rad_pos * 360 / (2 * Math::PI), @radius, marker_label)
- end
- end
-
-private
-
- def draw_label(center_x, center_y, angle, radius, amount)
- r_offset = 1.1
- x_offset = center_x # + 15 # The label points need to be tweaked slightly
- y_offset = center_y # + 0 # This one doesn't though
- x = x_offset + (radius * r_offset * Math.sin(angle.deg2rad))
- y = y_offset - (radius * r_offset * Math.cos(angle.deg2rad))
-
- # Draw label
- @d.fill = @marker_color
- @d.font = @font if @font
- @d.pointsize = scale_fontsize(20)
- @d.stroke = 'transparent'
- @d.font_weight = BoldWeight
- s = angle.deg2rad / (2*Math::PI)
- @d.gravity = SouthGravity if s >= 0.96 or s < 0.04
- @d.gravity = SouthWestGravity if s >= 0.04 or s < 0.21
- @d.gravity = WestGravity if s >= 0.21 or s < 0.29
- @d.gravity = NorthWestGravity if s >= 0.29 or s < 0.46
- @d.gravity = NorthGravity if s >= 0.46 or s < 0.54
- @d.gravity = NorthEastGravity if s >= 0.54 or s < 0.71
- @d.gravity = EastGravity if s >= 0.71 or s < 0.79
- @d.gravity = SouthEastGravity if s >= 0.79 or s < 0.96
-# @d.gravity = NorthGravity
- @d.annotate_scaled(@base_image, 0, 0, x, y, amount, @scale)
- end
-
-end
-
-# # This method is already in Float
-# class Float
-# # Used for degree => radian conversions
-# def deg2rad
-# self * (Math::PI/180.0)
-# end
-# end
-
-
-
projects / selectricity-live / blobdiff