Module: CVFFI::CvPointMethods

Included in:
CvPointBase, Point
Defined in:
lib/opencv-ffi-wrappers/core/point.rb

Instance Method Summary collapse

Instance Method Details

#*(a) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 19

def *(a)
  if got_what_i_need a
    self.class.new( [ x*a.x, y*a.y ] )
  else
    self.class.new( [ x*a, y*a ] )
  end
end

#+(a) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 35

def +(a)
  if  got_what_i_need a
    self.class.new( [ x+a.x, y+a.y ] )
  else
    self.class.new( [ x+a, y+a ] )
  end
end

#-(a) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 27

def -(a)
  if got_what_i_need a
    self.class.new( [ x.to_f-a.x, y.to_f-a.y ] )
  else
    self.class.new( [ x.to_f-a, y.to_f-a ] )
  end
end

#/(a) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 11

def /(a)
  if got_what_i_need a
    self.class.new( [ x.to_f/a.x.to_f, y.to_f/a.y.to_f ] )
  else
    self.class.new( [ x.to_f/a, y.to_f/a ] )
  end
end

#==(b) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 50

def ==(b)
  @x == b.x and @y == b.y
end

#===(b) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 53

def ===(b)
  @x === b.x and @y === b.y
end

#got_what_i_need(a) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 7

def got_what_i_need(a)
  a.class.method_defined?(:x) and a.class.method_defined?(:y) 
end

#l2_squared_distance(b) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 86

def l2_squared_distance( b )
  (x-b.x)**2 + (y-b.y)**2
end

#l2distance(b) ⇒ Object Also known as: distance_to 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 81

def l2distance( b )
  Math::sqrt( l2_squared_distance(b) )
end

#neighbor?(p, radius) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 70

def neighbor?( p, radius )
  return false if (x-p.x).abs > radius or (y-p.y).abs > radius
  return false if l2distance(p) > radius
  true
end

#neighbor_rsquared?(p, rsquared) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 76

def neighbor_rsquared?( p, rsquared )
  return false if l2_squared_distance(p) > rsquared
  true
end

#rotate(rads) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 43

def rotate( rads )
  sa = Math::sin rads
  ca = Math::cos rads
  self.class.new( x*ca - y*sa,
                  x*sa + y*ca )
end

#to_a(homogeneous = true) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 62

def to_a(homogeneous=true)
  if homogeneous
    [ @x/@w, @y/@w, 1.0 ]
  else
    [ @x, @y ]
  end
end

#to_Vector(homogeneous = true) ⇒ Object Also known as: to_vector 



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# File 'lib/opencv-ffi-wrappers/core/point.rb', line 57

def to_Vector( homogeneous = true )
  Vector.elements( to_a( homogeneous ) )
end