class GV::BaseGraph

Public Instance Methods

directed?() click to toggle source

@return whether this graph is directed

# File lib/gv.rb, line 188
def directed?
  LibCGraph.agisdirected(ptr) == 1
end
edge(name, tail, head, attrs = {}) click to toggle source

Creates a new edge @param name [String] the name (identifier) of the edge @param tail [Node] the edge's tail node @param head [Node] the edge's head node @param attrs [Hash{String, Symbol => Object}] the attributes to associate with this edge @see www.graphviz.org/doc/info/attrs.html Node, Edge and Graph Attributes @return [Edge] the newly created edge

# File lib/gv.rb, line 170
def edge(name, tail, head, attrs = {})
  component Edge, [name, tail, head], attrs
end
node(name, attrs = {}) click to toggle source

Creates a new node @param name [String] the name (identifier) of the node @param attrs [Hash{String, Symbol => Object}] the attributes to associate with this node @see www.graphviz.org/doc/info/attrs.html Node, Edge and Graph Attributes @return [Node] the newly created node

# File lib/gv.rb, line 158
def node(name, attrs = {})
  component Node, [name], attrs
end
strict?() click to toggle source

@return whether this graph is strict

# File lib/gv.rb, line 193
def strict?
  LibCGraph.agisstrict(ptr) == 1
end
sub_graph(name, attrs = {}) { |graph| ... } click to toggle source

Creates a new sub-graph @param name [String] the name (identifier) of the sub-graph @param attrs [Hash{String, Symbol => Object}] the attributes to associate with this sub-graph @see www.graphviz.org/doc/info/attrs.html Node, Edge and Graph Attributes @return [SubGraph] the newly created sub-graph

# File lib/gv.rb, line 180
def sub_graph(name, attrs = {})
  graph = component SubGraph, [name], attrs
  yield graph if block_given?

  graph
end

Private Instance Methods

component(klass, args, attrs = {}) click to toggle source
# File lib/gv.rb, line 198
def component(klass, args, attrs = {})
  comp = klass.new self, *args

  attrs.each do |attr, value|
    comp[attr] = value
  end

  comp
end