Class: CSquare

Inherits:
Object
  • Object
show all
Defined in:
lib/csquares/csquares.rb

Constant Summary collapse

KM = 
{10 => 0.1, 50 => 0.5, 100 => 1, 500 => 5, 1000 => 10}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(lat, lng) ⇒ CSquare

Returns a new instance of CSquare.



7
8
9
10
11
12
13
14
 
# File 'lib/csquares/csquares.rb', line 7

def initialize(lat,lng)
  @lat, @lng = lat.to_f,lng.to_f
  digits = pad_and_interleave.insert(0,global_quadrant)
  chunks = chunk_up(digits)
  chunks[1..-1].each {|it| it.insert(0,intermediate_quadrant(it))}
  @code = delimit(chunks)
  @digits = chunks.join.split("").map {|it| it.to_i}
end

Instance Attribute Details

#code ⇒ Object (readonly)

Returns the value of attribute code.



3
4
5
 
# File 'lib/csquares/csquares.rb', line 3

def code
  @code
end

#digits ⇒ Object (readonly)

Returns the value of attribute digits.



3
4
5
 
# File 'lib/csquares/csquares.rb', line 3

def digits
  @digits
end

#lat ⇒ Object (readonly)

Returns the value of attribute lat.



3
4
5
 
# File 'lib/csquares/csquares.rb', line 3

def lat
  @lat
end

#lng ⇒ Object (readonly)

Returns the value of attribute lng.



3
4
5
 
# File 'lib/csquares/csquares.rb', line 3

def lng
  @lng
end

Instance Method Details

#sq(i = 0.1, int = false) ⇒ Object 



16
17
18
19
20
21
22
23
24
25
26
 
# File 'lib/csquares/csquares.rb', line 16

def sq(i=0.1,int=false)
  n = 6 + (3 * Math.log10(i).abs).ceil
  it = case i
    when 10 then @digits[0..3]
    when 5 then @digits[0..4]
    when 1 then @digits[0..6]
    else @digits[0..n]
  end
  result = delimit [it[0..3],*it[4..-1].chunk_into(3)]
  int ? result.gsub(/:/){}.to_i : result
end