Class: Geometry::PointOne
- Inherits:
-
Object
- Object
- Geometry::PointOne
- Defined in:
- lib/geometry/point_one.rb
Overview
An object repesenting a Point that is one unit away from the origin, along each axis, in N-dimensional space
A PointOne object is a Point that will always compare equal to one and unequal to everything else, regardless of size. It’s similar to the Null Object Pattern, but for ones.
Accessors collapse
- #x ⇒ Object readonly
- #y ⇒ Object readonly
- #z ⇒ Object readonly
Accessors collapse
-
#[](i) ⇒ Numeric
Element i (starting at 0).
Unary operators collapse
Enumerable collapse
-
#first(n = nil) ⇒ Object
Return the first, or first n, elements (always 0).
Instance Method Summary collapse
- #*(other) ⇒ Object
- #+(other) ⇒ Object
- #-(other) ⇒ Object
- #/(other) ⇒ Object
- #coerce(other) ⇒ Object
- #eql?(other) ⇒ Boolean (also: #==)
- #is_a?(klass) ⇒ Boolean (also: #kind_of?)
- #max(*args) ⇒ Number, Point
- #min(*args) ⇒ Number, Point
- #minmax(*args) ⇒ Array<Number>, Array<Point>
-
#pop(count = 1) ⇒ Point
Returns a new Point with the given number of elements removed from the end.
-
#shift(count = 1) ⇒ Point
Removes the first element and returns it.
-
#to_ary ⇒ Object
This is a hack to get Array#== to work properly.
Instance Attribute Details
#x ⇒ Object (readonly)
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# File 'lib/geometry/point_one.rb', line 53 def x 1 end |
#y ⇒ Object (readonly)
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# File 'lib/geometry/point_one.rb', line 59 def y 1 end |
#z ⇒ Object (readonly)
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# File 'lib/geometry/point_one.rb', line 65 def z 1 end |
Instance Method Details
#*(other) ⇒ Object
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# File 'lib/geometry/point_one.rb', line 159 def *(other) raise OperationNotDefined unless other.is_a? Numeric other end |
#+(other) ⇒ Object
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# File 'lib/geometry/point_one.rb', line 132 def +(other) case other when Numeric Point.iso(other + 1) when Size Point[other.map {|a| a + 1 }] else if other.respond_to?(:map) other.map {|a| a + 1 } else Point[other + 1] end end end |
#+@ ⇒ Object
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# File 'lib/geometry/point_one.rb', line 123 def +@ self end |
#-(other) ⇒ Object
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# File 'lib/geometry/point_one.rb', line 147 def -(other) if other.is_a? Size Point[other.map {|a| 1 - a }] elsif other.respond_to? :map other.map {|a| 1 - a } elsif other == 1 Point.zero else Point.iso(1 - other) end end |
#-@ ⇒ Object
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# File 'lib/geometry/point_one.rb', line 127 def -@ -1 end |
#/(other) ⇒ Object
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# File 'lib/geometry/point_one.rb', line 164 def /(other) raise OperationNotDefined unless other.is_a? Numeric raise ZeroDivisionError if 0 == other 1 / other end |
#[](i) ⇒ Numeric
Returns Element i (starting at 0).
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# File 'lib/geometry/point_one.rb', line 47 def [](i) 1 end |
#coerce(other) ⇒ Object
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# File 'lib/geometry/point_one.rb', line 22 def coerce(other) if other.is_a? Numeric [other, 1] elsif other.is_a? Array [other, Array.new(other.size, 1)] elsif other.is_a? Vector [other, Vector[*Array.new(other.size, 1)]] else [Point[other], Point[Array.new(other.size, 1)]] end end |
#eql?(other) ⇒ Boolean Also known as: ==
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# File 'lib/geometry/point_one.rb', line 13 def eql?(other) if other.respond_to? :all? other.all? {|e| e.eql? 1} else other == 1 end end |
#first(n = nil) ⇒ Object
Return the first, or first n, elements (always 0)
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# File 'lib/geometry/point_one.rb', line 175 def first(n=nil) Array.new(n, 1) rescue 1 end |
#is_a?(klass) ⇒ Boolean Also known as: kind_of?
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# File 'lib/geometry/point_one.rb', line 34 def is_a?(klass) (klass == Point) || super end |
#max(*args) ⇒ Number, Point
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# File 'lib/geometry/point_one.rb', line 74 def max(*args) if args.empty? 1 else args = args.first if 1 == args.size Point[Array.new(args.size, 1).zip(args).map(&:max)] end end |
#min(*args) ⇒ Number, Point
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# File 'lib/geometry/point_one.rb', line 87 def min(*args) if args.empty? 1 else args = args.first if 1 == args.size Point[Array.new(args.size, 1).zip(args).map(&:min)] end end |
#minmax(*args) ⇒ Array<Number>, Array<Point>
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# File 'lib/geometry/point_one.rb', line 100 def minmax(*args) if args.empty? [1, 1] else [min(*args), max(*args)] end end |
#pop(count = 1) ⇒ Point
Returns a new Geometry::Point with the given number of elements removed from the end
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# File 'lib/geometry/point_one.rb', line 110 def pop(count=1) Point[Array.new(count, 1)] end |
#shift(count = 1) ⇒ Point
Removes the first element and returns it
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# File 'lib/geometry/point_one.rb', line 116 def shift(count=1) Point[Array.new(count, 1)] end |
#to_ary ⇒ Object
This is a hack to get Array#== to work properly. It works on ruby 2.0 and 1.9.3.
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# File 'lib/geometry/point_one.rb', line 40 def to_ary [] end |