Class: DxfIO::Entity::Support::Point

Inherits:
Object
  • Object
show all
Defined in:
lib/dxf_io/entity/support/point.rb

Constant Summary collapse

START_POINT_GROUP_NUMS = 
DxfIO::Constants::START_POINT_GROUP_NUMS
END_POINT_GROUP_NUMS = 
DxfIO::Constants::END_POINT_GROUP_NUMS
TYPES = 
%i(start end).freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x, y, options = {}) ⇒ Point

Returns a new instance of Point.



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# File 'lib/dxf_io/entity/support/point.rb', line 12

def initialize(x, y, options = {})
  @x, @y = x, y
  @type = TYPES.include?(options[:type]) ? options[:type] : TYPES.first
end

Instance Attribute Details

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/dxf_io/entity/support/point.rb', line 10

def type
  @type
end

#x ⇒ Object (readonly)

Returns the value of attribute x.



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# File 'lib/dxf_io/entity/support/point.rb', line 10

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



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# File 'lib/dxf_io/entity/support/point.rb', line 10

def y
  @y
end

Instance Method Details

#*(num) ⇒ Object 



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# File 'lib/dxf_io/entity/support/point.rb', line 81

def *(num)
  if num.is_a? Numeric
    self.class.new(@x * num,
                   @y * num,
                   type: @type)
  else
    raise ArgumentError, 'argument must be Numeric'
  end
end

#+(point) ⇒ Object

binary



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# File 'lib/dxf_io/entity/support/point.rb', line 57

def +(point)
  if point.is_a? self.class
    self.class.new(@x + point.x,
                   @y + point.y,
                   type: @type == point.type ? @type : :start)
  elsif point.is_a? Array
    self.class.new(@x + point[0],
                   @y + point[1],
                   type: @type)
  else
    raise ArgumentError, 'point must be an Array or a DxfIO::Entity::Support::Point'
  end
end

#-(point) ⇒ Object 



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# File 'lib/dxf_io/entity/support/point.rb', line 71

def -(point)
  if point.is_a? self.class
    self - point
  elsif point.is_a? Array
    self + point.map(&:-@)
  else
    raise ArgumentError, 'point must be an Array or a DxfIO::Entity::Support::Point'
  end
end

#-@ ⇒ Object

unary



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# File 'lib/dxf_io/entity/support/point.rb', line 51

def -@
  self.class.new(-@x, -@y, type: @type)
end

#/(num) ⇒ Object 



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# File 'lib/dxf_io/entity/support/point.rb', line 91

def /(num)
  if num.is_a? Numeric
    self.class.new(@x / num,
                   @y / num,
                   type: @type)
  else
    raise ArgumentError, 'argument must be Numeric'
  end
end

#==(point) ⇒ Object

eq operations



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# File 'lib/dxf_io/entity/support/point.rb', line 43

def ==(point)
  to_a == point.to_a
end

#end? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dxf_io/entity/support/point.rb', line 21

def end?
  @type == :end
end

#rotate_180 ⇒ Object 



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# File 'lib/dxf_io/entity/support/point.rb', line 107

def rotate_180
  -self
end

#rotate_90 ⇒ Object

geometrical operation (supposed what point is a vector from zero)



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# File 'lib/dxf_io/entity/support/point.rb', line 103

def rotate_90
  self.class.new(@y, -@x, type: @type)
end

#start? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dxf_io/entity/support/point.rb', line 17

def start?
  @type == :start
end

#to_a ⇒ Object 



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# File 'lib/dxf_io/entity/support/point.rb', line 25

def to_a
  [@x, @y]
end

#to_dxf_array ⇒ Object 



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# File 'lib/dxf_io/entity/support/point.rb', line 33

def to_dxf_array
  if start?
    [{START_POINT_GROUP_NUMS.first => @x}, {START_POINT_GROUP_NUMS.last => @y}]
  elsif end?
    [{END_POINT_GROUP_NUMS.first => @x}, {END_POINT_GROUP_NUMS.last => @y}]
  end
end

#to_h ⇒ Object 



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# File 'lib/dxf_io/entity/support/point.rb', line 29

def to_h
  {x: @x, y: @y}
end