Module: RGeo::ImplHelper::BasicLineStringMethods

Included in:
Cartesian::LineImpl, Cartesian::LineStringImpl, Cartesian::LinearRingImpl, Geographic::ProjectedLineImpl, Geographic::ProjectedLineStringImpl, Geographic::ProjectedLinearRingImpl, Geographic::SphericalLineImpl, Geographic::SphericalLineStringImpl, Geographic::SphericalLinearRingImpl
Defined in:
lib/rgeo/impl_helper/basic_line_string_methods.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#boundary ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 46

def boundary
  array = []
  array << @points.first << @points.last if !is_empty? && !is_closed?
  factory.multipoint([array])
end

#contains?(rhs) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 90

def contains?(rhs)
  if Feature::Point === rhs
    contains_point?(rhs)
  else
    raise(Error::UnsupportedOperation,
          "Method LineString#contains? is only defined for Point")
  end
end

#coordinates ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 86

def coordinates
  @points.map(&:coordinates)
end

#dimension ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 34

def dimension
  1
end

#end_point ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 56

def end_point
  @points.last
end

#geometry_type ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 38

def geometry_type
  Feature::LineString
end

#hash ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 79

def hash
  @hash ||= begin
    hash = [factory, geometry_type].hash
    @points.inject(hash) { |h, p| (1_664_525 * h + p.hash).hash }
  end
end

#initialize(factory, points) ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 12

def initialize(factory, points)
  self.factory = factory
  @points = points.map do |elem|
    elem = Feature.cast(elem, factory, Feature::Point)
    raise Error::InvalidGeometry, "Could not cast #{elem}" unless elem
    elem
  end
  validate_geometry
end

#is_closed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 60

def is_closed?
  unless defined?(@is_closed)
    @is_closed = @points.size > 2 && @points.first == @points.last
  end
  @is_closed
end

#is_empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 42

def is_empty?
  @points.size == 0
end

#is_ring? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 67

def is_ring?
  is_closed? && is_simple?
end

#num_points ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 22

def num_points
  @points.size
end

#point_n(n) ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 26

def point_n(n)
  n < 0 ? nil : @points[n]
end

#points ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 30

def points
  @points.dup
end

#rep_equals?(rhs) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 71

def rep_equals?(rhs)
  if rhs.is_a?(self.class) && rhs.factory.eql?(@factory) && @points.size == rhs.num_points
    rhs.points.each_with_index { |p, i| return false unless @points[i].rep_equals?(p) }
  else
    false
  end
end

#start_point ⇒ Object 



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# File 'lib/rgeo/impl_helper/basic_line_string_methods.rb', line 52

def start_point
  @points.first
end