Class: VectorSalad::StandardShapes::Polygon

Inherits:

BasicShape

• Object
• BasicShape
• VectorSalad::StandardShapes::Polygon

show all

Includes:

Mixins::At

Defined in:

lib/vector_salad/standard_shapes/polygon.rb

Overview

Instance Attribute Summary (collapse)

• - (Object) options inherited from BasicShape

  Returns the value of attribute options.

• - (Object) sides readonly

  Returns the value of attribute sides.

Instance Method Summary (collapse)

• - (Any) [](x, y) included from Mixins::At

  Set the x, y coordinates of the shape.

• - (Coords) at included from Mixins::At

  Get the x, y coordinates of the shape.

• - (Any) at=(at) included from Mixins::At

  Set the x, y coordinates of the shape directly.

• - (Polygon) initialize(sides, radius, **options) constructor

  Create a regular polygon with a specified number of sides.

• - (Any) move(x, y) included from Mixins::At

  Move the shape relatively.

• - (Object) to_path

  Convert the shape to a path.

new(6, 100)

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# File 'lib/vector_salad/standard_shapes/polygon.rb', line 18

def initialize(sides, radius, **options)
  @sides, @radius = sides, radius
  @options = options
  @x, @y = 0, 0
  self
end

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# File 'lib/vector_salad/standard_shapes/polygon.rb', line 11

def sides
  @sides
end

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# File 'lib/vector_salad/standard_shapes/polygon.rb', line 26

def to_path
  nodes = []
  angle = 2 * Math::PI / @sides
  theta = angle / 2 + Math::PI / 2
  @sides.times do |n|
    nodes[n] = []
    nodes[n][0] = @radius * Math.cos(angle * n + theta) + @x
    nodes[n][1] = @radius * Math.sin(angle * n + theta) + @y
  end

  Path.new(*nodes, **@options)
end