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Class: IRB::Vec

Relationships & Source Files
Inherits: Object
Defined in: lib/irb/easter-egg.rb

Class Attribute Summary

Class Method Summary

Class Attribute Details

.x (readonly)

[ GitHub ] 

  


# File 'lib/irb/easter-egg.rb', line 10



attr_reader :x, :y, :z


  








  

    .y   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/irb/easter-egg.rb', line 10



attr_reader :x, :y, :z


  








  

    .z   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/irb/easter-egg.rb', line 10



attr_reader :x, :y, :z


  







Class Method Details



  

    .cross(other)  
  

  [ GitHub ]


  

  


# File 'lib/irb/easter-egg.rb', line 20



def cross(other)
  ox, oy, oz = other.x, other.y, other.z
  Vec.new(@y*oz-@z*oy, @z*ox-@x*oz, @x*oy-@y*ox)
end


  








  

    .dot(other)  
  

  [ GitHub ]


  

  


# File 'lib/irb/easter-egg.rb', line 16



def dot(other)
  @x*other.x + @y*other.y + @z*other.z
end


  








  

    .initialize(x, y, z)  
  

  [ GitHub ]


  

  


# File 'lib/irb/easter-egg.rb', line 6



def initialize(x, y, z)
  @x, @y, @z = x, y, z
end


  








  

    .normalize  
  

  [ GitHub ]


  

  


# File 'lib/irb/easter-egg.rb', line 25



def normalize
  r = Math.sqrt(self.dot(self))
  Vec.new(@x / r, @y / r, @z / r)
end


  








  

    .sub(other)  
  

  [ GitHub ]


  

  


# File 'lib/irb/easter-egg.rb', line 12



def sub(other)
  Vec.new(@x - other.x, @y - other.y, @z - other.z)
end