Class: Rviz::Edge

Inherits:
Object
  • Object
show all
Includes:
Helper
Defined in:
lib/rviz/edge.rb

Overview

represent a ->

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helper

#attrs_to_s, #quote, #set

Constructor Details

#initialize(from_node, from_anchor, to_node, to_anchor = nil, attributes = {}) ⇒ Edge

Returns a new instance of Edge.



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# File 'lib/rviz/edge.rb', line 6

def initialize from_node, from_anchor, to_node, to_anchor = nil, attributes = {}
  @from, @from_anchor, @to, @to_anchor, @attrs = from_node, from_anchor, to_node, to_anchor, attributes
end

Instance Attribute Details

#attrs ⇒ Object (readonly)

Returns the value of attribute attrs.



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# File 'lib/rviz/edge.rb', line 4

def attrs
  @attrs
end

Instance Method Details

#node_anchor(node, anchor) ⇒ Object 



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# File 'lib/rviz/edge.rb', line 10

def node_anchor node, anchor
  if anchor and anchor.size > 0
    quote(node) + ":" + anchor
  else
    quote(node)
  end
end

#to_s ⇒ Object

output to dot format



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# File 'lib/rviz/edge.rb', line 21

def to_s
  from, to = node_anchor(@from, @from_anchor), node_anchor(@to, @to_anchor)
  if @attrs.keys.size > 0
    sprintf "%s -> %s [%s]", from, to, self.attrs_to_s
  else
    sprintf "%s -> %s", from, to
  end
end