Class: GridGenerator::SquareOne::Face

Inherits:
Object
  • Object
show all
Defined in:
lib/grid_generator/square_one/face.rb

Constant Summary collapse

COLOURS = 
{
  fill: "#d0d0d0",
  stroke: "#404040"
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x:, y:, units:, elements:, axis_direction: :forward) ⇒ Face

Returns a new instance of Face.



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# File 'lib/grid_generator/square_one/face.rb', line 13

def initialize(x:, y: , units: , elements:, axis_direction: :forward)
  @x, @y = x, y
  @units = units
  @elements = case elements 
  when String
    SquareOneFaceParser.new(elements).to_a
  when Array
    elements 
  else
    raise ArgumentError, "squares must be array or string" 
  end
  @axis_direction = axis_direction
end

Instance Attribute Details

#axis_direction ⇒ Object (readonly)

Returns the value of attribute axis_direction.



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# File 'lib/grid_generator/square_one/face.rb', line 27

def axis_direction
  @axis_direction
end

#elements ⇒ Object (readonly)

Returns the value of attribute elements.



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# File 'lib/grid_generator/square_one/face.rb', line 27

def elements
  @elements
end

#units ⇒ Object (readonly)

Returns the value of attribute units.



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# File 'lib/grid_generator/square_one/face.rb', line 27

def units
  @units
end

#x ⇒ Object (readonly)

Returns the value of attribute x.



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# File 'lib/grid_generator/square_one/face.rb', line 27

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



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# File 'lib/grid_generator/square_one/face.rb', line 27

def y
  @y
end

Instance Method Details

#as_json ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 91

def as_json
  {
    "element_shapes" => element_shapes.map(&:as_json)
  }
end

#axis ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 41

def axis
  if axis_direction == :back
    back_axis
  else
    forward_axis
  end
end

#back_axis ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 63

def back_axis
  a = Matrix.column_vector([
    x+half_face_size-half_edge_width,
    y,
  ])

  b = Matrix.column_vector([
    x+half_face_size+half_edge_width,
    y+face_size
  ])

  GridGenerator::BaseLine.new(a: a, b: b) 
end

#element_shapes ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 77

def element_shapes
  elements.map do |element|
    GridGenerator::SquareOne::ElementFactory.new(
      x: x,
      y: y,
      units: units,
      shape: element[:shape],
      offset: element[:offset],
      colour: element[:colour],
      opacity: element[:opacity]
    ).build
  end
end

#face_size ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 37

def face_size
  @face_size ||= 3 * units
end

#forward_axis ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 49

def forward_axis
  a = Matrix.column_vector([
    x+half_face_size+half_edge_width,
    y,
  ])

  b = Matrix.column_vector([
    x+half_face_size-half_edge_width,
    y+face_size
  ])

  GridGenerator::BaseLine.new(a: a, b: b) 
end

#half_edge_width ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 29

def half_edge_width 
  @half_edge_width ||= half_face_size * Math.tan(Math::PI/12) 
end

#half_face_size ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 33

def half_face_size 
  @half_face_size ||= face_size / 2 
end

#to_svg ⇒ Object 



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# File 'lib/grid_generator/square_one/face.rb', line 97

def to_svg
  output = ""
  element_shapes.each do |element|
    if element.opacity == 0.4
      output += "<polygon points=\"#{ element.points_string }\" style=\"fill:#{ COLOURS[:fill] };stroke:#{ COLOURS[:stroke] };stroke-width:1;opacity:1;\" />"
    end
    output += "<polygon points=\"#{ element.points_string }\" style=\"fill:#{ element.colour };stroke:#{ COLOURS[:stroke] };stroke-width:1;opacity:#{ element.opacity };\" />"
   end

  output += "<line x1=\"#{ axis.x1 }\" y1=\"#{ axis.y1 }\" x2=\"#{ axis.x2 }\" y2=\"#{ axis.y2 }\" style=\"stroke:#{ COLOURS[:stroke] };stroke-width:5\" />"

  output
end