Module: Rubyvis::Layout::Fill

Defined in:
lib/rubyvis/layout/hierarchy.rb

Overview

end class

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#_h ⇒ Object

Returns the value of attribute _h.



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# File 'lib/rubyvis/layout/hierarchy.rb', line 129

def _h
  @_h
end

#_or ⇒ Object

Returns the value of attribute _or.



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# File 'lib/rubyvis/layout/hierarchy.rb', line 129

def _or
  @_or
end

#_orient ⇒ Object

Returns the value of attribute _orient.



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# File 'lib/rubyvis/layout/hierarchy.rb', line 129

def _orient
  @_orient
end

#_w ⇒ Object

Returns the value of attribute _w.



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# File 'lib/rubyvis/layout/hierarchy.rb', line 129

def _w
  @_w
end

#ir ⇒ Object

Returns the value of attribute ir.



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# File 'lib/rubyvis/layout/hierarchy.rb', line 129

def ir
  @ir
end

Instance Method Details

#angle(n) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 244

def angle(n)
  (n.parent_node ? n.max_breadth - n.min_breadth : 1 ) * 2 * Math::PI
end

#dx(n) ⇒ Object

end method



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# File 'lib/rubyvis/layout/hierarchy.rb', line 213

def dx(n)
  if @_orient=='left' or @_orient=='right'
    (n.max_depth - n.min_depth) / (1.0 + @_depth) * @_w
  elsif @_orient=='top' or @_orient=='bottom'
    (n.max_breadth - n.min_breadth) * @_w
  elsif @_orient=='radial'
    n.parent_node ? (n.inner_radius + n.outer_radius) * Math.cos(n.mid_angle) : 0
  end          
end

#dy(n) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 223

def dy(n)
  if @_orient=='left' or @_orient=='right'
    (n.max_breadth - n.min_breadth) * @_h
  elsif @_orient=='top' or @_orient=='bottom'
    (n.max_depth - n.min_depth) / (1.0 + @_depth) * @_h
  elsif orient=='radial'
    n.parent_node ? (n.inner_radius + n.outer_radius) * Math.sin(n.mid_angle) : 0
  end        
end

#fill_build_implied(s) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 148

def fill_build_implied(s)
  nodes = s.nodes
  @_orient= s.orient
  @_orient=~/^(top|bottom)$/
  horizontal = !$1.nil?
  @_w = s.width
  @_h = s.height
  @_depth = -nodes[0].min_depth
  if @_orient == "radial"
    @_ir = s.inner_radius
    @_or = s.outer_radius
    @_ir||=0
    @_depth = @_depth * 2 if @_ir!=0
    @_or||=[@_w,@_h].min / 2.0
  end
  nodes.each_with_index {|n,i|
    n.x = fill_x(n)
    n.y = fill_y(n)
    if @_orient == "radial"
      n.inner_radius = inner_radius(n);
      n.outer_radius = outer_radius(n);
      n.start_angle = start_angle(n);
      n.angle = angle(n);
      n.mid_angle = n.start_angle + n.angle / 2.0
    else 
      n.mid_angle = horizontal ? -Math::PI / 2.0 : 0
    end
    n.dx = dx(n)
    n.dy = dy(n)
  }
  false
end

#fill_constructor ⇒ Object 



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

def fill_constructor
  @node.stroke_style("#fff").
    fill_style("#ccc").
    width(lambda {|n| n.dx}).
    height(lambda {|n| n.dy}).
    inner_radius(lambda {|n| n.inner_radius}).
    outer_radius(lambda {|n| n.outer_radius}).
    start_angle(lambda {|n| n.start_angle}).
    angle(lambda {|n| n.angle})
  
    @node_label.
      text_align("center").
      left(lambda {|n| n.x+ (n.dx / 2.0) }).
      top(lambda {|n| n.y+(n.dy / 2.0)})
    @link=nil
  
end

#fill_scale(d, depth) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 181

def fill_scale(d, depth)
  (d + depth) / (1 + depth).to_f
end

#fill_x(n) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 184

def fill_x(n)
  case @_orient
    when "left"
      fill_scale(n.min_depth,@_depth)*@_w
    when "right"
      (1-fill_scale(n.max_depth,@_depth))*@_w
    when "top"
      n.min_breadth*@_w
    when "bottom"
      (1-n.max_breath)*@_w
    when "radial"
      @_w / 2.0
  end
end

#fill_y(n) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 198

def fill_y(n)
  case @_orient
    when "left"
      n.min_breadth*@_h
    when "right"
      (1-n.max_breadth)*@_h
    when "top"
      fill_scale(n.min_depth, @_depth) * @_h            
    when "bottom"
      (1-fill_scale(n.max_depth, @_depth)) * @_h
    when "radial"
      @_h / 2.0
  end # end case
end

#inner_radius(n) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 233

def inner_radius(n)
  [0, fill_scale(n.min_depth, @_depth/2.0)].max * (@_or - @_ir) + @_ir
end

#outer_radius(n) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 237

def outer_radius(n)
  fill_scale(n.max_depth, @_depth / 2.0) * (@_or - @_ir) + @_ir
end

#start_angle(n) ⇒ Object 



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# File 'lib/rubyvis/layout/hierarchy.rb', line 241

def start_angle(n)
  (n.parent_node ? n.min_breadth - 0.25 : 0) * 2 * Math::PI
end