Module: RGeo::ImplHelper::BasicPolygonMethods

Included in:
Cartesian::PolygonImpl, Geographic::ProjectedPolygonImpl, Geographic::SphericalPolygonImpl
Defined in:
lib/rgeo/impl_helper/basic_polygon_methods.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#boundary ⇒ Object 


56
57
58
59
60
61
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 56

def boundary
  array = []
  array << @exterior_ring unless @exterior_ring.is_empty?
  array.concat(@interior_rings)
  factory.multi_line_string(array)
end

#contains?(rhs) ⇒ Boolean

Returns:

  • (Boolean) 

82
83
84
85
86
87
88
89
90
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 82

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

#coordinates ⇒ Object 


78
79
80
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 78

def coordinates
  ([@exterior_ring] + @interior_rings).map(&:coordinates)
end

#dimension ⇒ Object 


44
45
46
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 44

def dimension
  2
end

#exterior_ring ⇒ Object 


28
29
30
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 28

def exterior_ring
  @exterior_ring
end

#geometry_type ⇒ Object 


48
49
50
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 48

def geometry_type
  Feature::Polygon
end

#hash ⇒ Object 


71
72
73
74
75
76
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 71

def hash
  @hash ||= begin
    hash = [geometry_type, @exterior_ring].hash
    @interior_rings.inject(hash) { |h, r| (1_664_525 * h + r.hash).hash }
  end
end

#initialize(factory, exterior_ring, interior_rings) ⇒ Object 


12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 12

def initialize(factory, exterior_ring, interior_rings)
  self.factory = factory
  @exterior_ring = Feature.cast(exterior_ring, factory, Feature::LinearRing)
  unless @exterior_ring
    raise Error::InvalidGeometry, "Failed to cast exterior ring #{exterior_ring}"
  end
  @interior_rings = (interior_rings || []).map do |elem|
    elem = Feature.cast(elem, factory, Feature::LinearRing)
    unless elem
      raise Error::InvalidGeometry, "Could not cast interior ring #{elem}"
    end
    elem
  end
  validate_geometry
end

#interior_ring_n(n) ⇒ Object 


36
37
38
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 36

def interior_ring_n(n)
  n < 0 ? nil : @interior_rings[n]
end

#interior_rings ⇒ Object 


40
41
42
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 40

def interior_rings
  @interior_rings.dup
end

#is_empty? ⇒ Boolean

Returns:

  • (Boolean) 

52
53
54
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 52

def is_empty?
  @exterior_ring.is_empty?
end

#num_interior_rings ⇒ Object 


32
33
34
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 32

def num_interior_rings
  @interior_rings.size
end

#rep_equals?(rhs) ⇒ Boolean

Returns:

  • (Boolean) 

63
64
65
66
67
68
69
 
# File 'lib/rgeo/impl_helper/basic_polygon_methods.rb', line 63

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