class IRB::Vec
Attributes
x[R]
y[R]
z[R]
Public Class Methods
new(x, y, z)
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# File irb/easter-egg.rb, line 6 def initialize(x, y, z) @x, @y, @z = x, y, z end
Public Instance Methods
cross(other)
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# File 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)
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# File irb/easter-egg.rb, line 16 def dot(other) @x*other.x + @y*other.y + @z*other.z end
normalize()
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# File 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)
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# File irb/easter-egg.rb, line 12 def sub(other) Vec.new(@x - other.x, @y - other.y, @z - other.z) end