Module: CTioga2::Graphics::Elements::Contours

Defined in:
lib/ctioga2/graphics/elements/contour.rb

Constant Summary collapse

ContoursOptions = 
{
  'width' => 'float',
  'color' => 'color',
  'style' => 'line-style',
  'closed' => 'boolean',
}

Instance Method Summary collapse

Instance Method Details

#contour ⇒ Object

TODO:

Maybe this cumbersome level/point thing along with the

$last_curve_style calls for a context for the primitive, ie which was the state of the dataset/curve stack at the moment when the primitive was drawn ?



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# File 'lib/ctioga2/graphics/elements/contour.rb', line 39

TiogaPrimitiveCall.
  primitive("contour", "contour", [ 'level'],
            ContoursOptions) do |t, level,options|
  options ||= {}
  # table = PlotMaker.plotmaker.data_stack.last.indexed_table
  l, d = *level
  table = d.indexed_table
  contour = table.make_contour(l)
  contour << options['closed']

  ## @todo This $last_curve_style isn't beautiful.
  ##
  ## Worse, it won't work !
  options['color'] ||= $last_curve_style.line.color

  stroke_style = Styles::StrokeStyle.from_hash(options, '%s')
  

  t.context do 
    stroke_style.set_stroke_style(t)
    t.append_points_with_gaps_to_path(*contour)
    t.stroke
  end
end