Class: Doodl::CircleLayout

Inherits:
Layout
  • Object
show all
Defined in:
lib/layout/layout.rb

Instance Attribute Summary

Attributes inherited from Layout

#graph, #iterations, #locations

Instance Method Summary collapse

Methods inherited from Layout

#center_x, #center_y, #deep_copy, #finished?, #get_nearest_node, #get_nearest_node_within, #init, #layout, #move, #rotate, #set_location

Constructor Details

#initialize(view) ⇒ CircleLayout

Returns a new instance of CircleLayout.



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# File 'lib/layout/layout.rb', line 130

def initialize(view)
  super(view)
end

Instance Method Details

#dolayout(graph) ⇒ Object 



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# File 'lib/layout/layout.rb', line 134

def dolayout(graph)
  $LOG.info "Started CircleLayout" if $LOG
  center = @view.center
  r = [center.x, center.y].min * 0.75
  main = 2 * Math::PI / graph.num_nodes
  graph.each_node_with_index do |node, index|
    x = center.x + r * Math.sin(index * main)
    y = center.y + r * Math.cos(index * main)
    @locations[node] = Location.new(x, y)
  end
  $LOG.info "Finished CircleLayout" if $LOG
end