Class: Coords::Spherical

Inherits:
Polar
  • Object
show all
Defined in:
lib/coords/spherical.rb

Instance Method Summary collapse

Methods inherited from Polar

#distance, #radius, #rotate, #rotate!, #theta, #translate, #translate!

Constructor Details

#initialize(radius, theta, phi) ⇒ Spherical

Returns a new instance of Spherical.



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# File 'lib/coords/spherical.rb', line 4

def initialize(radius, theta, phi)
  super(radius, theta)
  @phi = phi
end

Instance Method Details

#==(point) ⇒ Object 



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# File 'lib/coords/spherical.rb', line 36

def ==(point)
  radius.round(12) == point.radius.round(12) && theta.round(12) == point.theta.round(12) && phi.round(12) == point.phi.round(12)
end

#distance_squared(point) ⇒ Object 



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# File 'lib/coords/spherical.rb', line 13

def distance_squared(point)
  x1 = radius * Math.sin(theta) * Math.cos(phi)
  x2 = point.radius * Math.sin(point.theta) * Math.cos(point.phi)
  y1 = radius * Math.sin(theta) * Math.sin(phi)
  y2 = point.radius * Math.sin(point.theta) * Math.sin(point.phi)
  z1 = radius * Math.cos(theta)
  z2 = point.radius * Math.cos(point.theta)

  ((x2 - x1).abs ** 2) + ((y2 - y1).abs ** 2) + ((z2 - z1).abs ** 2)
end

#phi ⇒ Object 



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# File 'lib/coords/spherical.rb', line 9

def phi
  @phi
end

#to_cartesian ⇒ Object 



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# File 'lib/coords/spherical.rb', line 28

def to_cartesian
  x = radius * Math.sin(theta) * Math.cos(phi)
  y = radius * Math.sin(theta) * Math.sin(phi)
  z = radius * Math.cos(theta)

  Cartesian3d.new(x, y, z)
end

#to_s ⇒ Object 



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# File 'lib/coords/spherical.rb', line 24

def to_s
  radius.to_s + ',' + theta.to_s + ',' + phi.to_s
end