Class: Dieses::Geometry::Point

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/dieses/geometry/point.rb

Direct Known Subclasses

Mutable

Defined Under Namespace

Classes: Mutable

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x, y) ⇒ Point

Returns a new instance of Point.



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# File 'lib/dieses/geometry/point.rb', line 10

def initialize(x, y)
  @x, @y = x.to_f, y.to_f
  @hash  = Point.hash ^ to_a.hash

  freeze
end

Instance Attribute Details

#hash ⇒ Object (readonly)

Returns the value of attribute hash.



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# File 'lib/dieses/geometry/point.rb', line 8

def hash
  @hash
end

#x ⇒ Object (readonly)

Returns the value of attribute x.



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# File 'lib/dieses/geometry/point.rb', line 8

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



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# File 'lib/dieses/geometry/point.rb', line 8

def y
  @y
end

Class Method Details

.call(*args) ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 56

def call(*args)
  new(*args)
end

.cast(point) ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 69

def cast(point)
  Point.new(point.x, point.y)
end

.distance(starting, ending) ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 64

def distance(starting, ending)
  ending ||= origin
  Math.sqrt((ending.x - starting.x)**2 + (starting.y - ending.y)**2)
end

.origin ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 60

def origin
  new 0.0, 0.0
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 29

def <=>(other)
  return unless other.is_a? Point

  to_a <=> other.to_a
end

#approx(precision = nil) ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 25

def approx(precision = nil)
  self.class.new Support.approx(x, precision), Support.approx(y, precision)
end

#distance(other = nil) ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 21

def distance(other = nil)
  self.class.distance(self, other)
end

#eql?(other) ⇒ Boolean Also known as: ==

Returns:

  • (Boolean) 


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# File 'lib/dieses/geometry/point.rb', line 35

def eql?(other)
  return false unless other.is_a? Point

  to_a == other.to_a
end

#to_a ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 47

def to_a
  [x, y]
end

#to_h ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 51

def to_h
  { x: x, y: y }
end

#to_s ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 43

def to_s
  "P(#{x}, #{y})"
end

#translate(x: nil, y: nil) ⇒ Object 



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# File 'lib/dieses/geometry/point.rb', line 17

def translate(x: nil, y: nil)
  self.class.new(self.x + (x || 0), self.y + (y || 0))
end