Class: Ziya::Gauges::Support::RadialNumbers

Inherits:
RadialBase show all
Defined in:
lib/ziya/gauges/support/radial_numbers.rb

Instance Method Summary collapse

Methods inherited from Base

#to_comp_yaml

Methods included from YamlHelpers::Gauges

#dial, #dials, #gauge

Methods included from YamlHelpers::Base

#clazz, #indent

Methods inherited from Charts::Support::Base

#==, attributes, #attributes_for, #configured?, has_attribute, #has_sub_components, #initialize, #merge, #options, #options_as_string

Constructor Details

This class inherits a constructor from Ziya::Charts::Support::Base

Instance Method Details

#flatten(xml) ⇒ Object

overrides flatten to generate a series of radial tick marks



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# File 'lib/ziya/gauges/support/radial_numbers.rb', line 16

def flatten( xml )
  number = start_num
  i      = start_angle
  while( i <= end_angle ) do
    angle = deg2rad( i )
    hash = { :x         => (x + Math::sin( angle ) * radius).to_i,
             :y         => (y - Math::cos( angle ) * radius).to_i,
             :width     => width ||  20,
             :height    => height || 20,
             :font      => font || "Arial",
             :size      => size || 10,
             :bold      => bold || true,
             :alpha     => alpha,                 
             :rotation  => i, 
             :align     => align || "left",
             :color     => color }
    xml.text( hash ) do
      xml.text! number.to_s
    end
    i      += (end_angle-start_angle)/(ticks-1)
    number += (end_num-start_num)/(ticks-1)
  end
end