Class: GeometricVector

Inherits:
Struct
  • Object
show all
Defined in:
lib/flash_math/modules/geometry/geometric_vector.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#x ⇒ Object

Returns the value of attribute x

Returns:

  • (Object) —

    the current value of x



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 1

def x
  @x
end

#y ⇒ Object

Returns the value of attribute y

Returns:

  • (Object) —

    the current value of y



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 1

def y
  @y
end

Class Method Details

.new_by_array(array) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 3

def self.new_by_array(array)
  self.new(array[0], array[1])
end

Instance Method Details

#*(scalar) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 19

def *(scalar)
  GeometricVector.new(x * scalar, y * scalar)
end

#+(vector) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 11

def +(vector)
  GeometricVector.new(x + vector.x, y + vector.y)
end

#-(vector) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 15

def -(vector)
  self + (-1) * vector
end

#==(vector) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 7

def ==(vector)
  x === vector.x && y === vector.y
end

#coerce(scalar) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 23

def coerce(scalar)
  if scalar.is_a?(Numeric)
    [self, scalar]
  else
    raise ArgumentError, "GeometricVector: cannot coerce #{scalar.inspect}"
  end
end

#collinear_with?(vector) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 39

def collinear_with?(vector)
  cross_product(vector) === 0
end

#cross_product(vector) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 31

def cross_product(vector)
  x * vector.y - y * vector.x
end

#modulus ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 43

def modulus
  Math.hypot(x ,y)
end

#scalar_product(vector) ⇒ Object 



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# File 'lib/flash_math/modules/geometry/geometric_vector.rb', line 35

def scalar_product(vector)
  x * vector.x + y * vector.y
end