Class: Geometry::PointIso

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

Overview

An object repesenting a N-dimensional Point with identical elements.

Accessors collapse

Instance Attribute Summary collapse

Accessors collapse

Unary operators collapse

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ PointIso

Initialize to the given value

Parameters:



14
15
16
 
# File 'lib/geometry/point_iso.rb', line 14

def initialize(value)
    @value = value
end

Instance Attribute Details

#value ⇒ Number

Returns the value for every element.

Returns:

  • (Number) —

    the value for every element



10
11
12
 
# File 'lib/geometry/point_iso.rb', line 10

def value
  @value
end

#x ⇒ Object (readonly) 



65
66
67
 
# File 'lib/geometry/point_iso.rb', line 65

def x
    @value
end

#y ⇒ Object (readonly) 



71
72
73
 
# File 'lib/geometry/point_iso.rb', line 71

def y
    @value
end

#z ⇒ Object (readonly) 



77
78
79
 
# File 'lib/geometry/point_iso.rb', line 77

def z
    @value
end

Instance Method Details

#*(other) ⇒ Object

Raises:



119
120
121
122
 
# File 'lib/geometry/point_iso.rb', line 119

def *(other)
    raise OperationNotDefined unless other.is_a? Numeric
    self.class.new(other * @value)
end

#+(other) ⇒ Object 



94
95
96
97
98
99
100
101
102
103
104
105
106
107
 
# File 'lib/geometry/point_iso.rb', line 94

def +(other)
    case other
  when Numeric
      other + @value
  when Size
      Point[other.map {|a| a + @value }]
  else
      if other.respond_to?(:map)
    other.map {|a| a + @value }
      else
    Point[other + @value]
      end
    end
end

#+@ ⇒ Object 



85
86
87
 
# File 'lib/geometry/point_iso.rb', line 85

def +@
    self
end

#-(other) ⇒ Object 



109
110
111
112
113
114
115
116
117
 
# File 'lib/geometry/point_iso.rb', line 109

def -(other)
    if other.is_a? Size
  Point[other.map {|a| @value - a }]
    elsif other.respond_to? :map
  other.map {|a| @value - a }
    else
  @value - other
    end
end

#-@ ⇒ Object 



89
90
91
 
# File 'lib/geometry/point_iso.rb', line 89

def -@
    self.class.new(-@value)
end

#/(other) ⇒ Object

Raises:



124
125
126
127
128
 
# File 'lib/geometry/point_iso.rb', line 124

def /(other)
    raise OperationNotDefined unless other.is_a? Numeric
    raise ZeroDivisionError if 0 == other
    self.class.new(@value / other)
end

#[](i) ⇒ Numeric

Returns Element i (starting at 0).

Parameters:

Returns:

  • (Numeric) —

    Element i (starting at 0)



59
60
61
 
# File 'lib/geometry/point_iso.rb', line 59

def [](i)
    @value
end

#coerce(other) ⇒ Object 



27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/geometry/point_iso.rb', line 27

def coerce(other)
    if other.is_a? Numeric
  [other, @value]
    elsif other.is_a? Array
  [other, Array.new(other.size, @value)]
    elsif other.is_a? Vector
  [other, Vector[*Array.new(other.size, @value)]]
    else
  [Point[other], Point[Array.new(other.size, @value)]]
    end
end

#eql?(other) ⇒ Boolean Also known as: ==

Returns:

  • (Boolean) 


18
19
20
21
22
23
24
 
# File 'lib/geometry/point_iso.rb', line 18

def eql?(other)
    if other.respond_to? :all?
  other.all? {|e| e.eql? @value}
    else
  other == @value
    end
end

#inspect ⇒ Object 



39
40
41
 
# File 'lib/geometry/point_iso.rb', line 39

def inspect
    'PointIso<' + @value.inspect + '>'
end

#is_a?(klass) ⇒ Boolean Also known as: kind_of?

Returns:

  • (Boolean) 


46
47
48
 
# File 'lib/geometry/point_iso.rb', line 46

def is_a?(klass)
    (klass == Point) || super
end

#to_ary ⇒ Object

This is a hack to get Array#== to work properly. It works on ruby 2.0 and 1.9.3.



52
53
54
 
# File 'lib/geometry/point_iso.rb', line 52

def to_ary
    []
end

#to_s ⇒ Object 



42
43
44
 
# File 'lib/geometry/point_iso.rb', line 42

def to_s
    'PointIso<' + @value.to_s + '>'
end