Class: Topolys::DirectedEdge

Inherits:
Object
  • Object
show all
Defined in:
lib/topolys/model.rb

Overview

Edge

Instance Attribute Summary collapse

Attributes inherited from Object

#attributes, #children, #id, #parents

Instance Method Summary collapse

Methods inherited from Object

#debug, #hash, link, #link_child, #link_parent, #short_id, #short_name, #to_s, unlink, #unlink_child, #unlink_parent

Constructor Details

#initialize(edge, inverted) ⇒ DirectedEdge

Initializes a DirectedEdge object, use Model.get_directed_edge instead

Throws if edge or inverted are incorrect type

Parameters:

  • edge (Edge) —

    The underlying edge

  • inverted (Boolean) —

    True if this is a forward DirectedEdge, false otherwise



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# File 'lib/topolys/model.rb', line 958

def initialize(edge, inverted)
  super()
  @edge = edge
  @inverted = inverted

  recalculate
end

Instance Attribute Details

#edge ⇒ Edge (readonly)

Returns the edge this directed edge points to.

Returns:

  • (Edge) —

    the edge this directed edge points to



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# File 'lib/topolys/model.rb', line 940

def edge
  @edge
end

#inverted ⇒ Boolean (readonly)

Returns true if this is a forward directed edge, false otherwise.

Returns:

  • (Boolean) —

    true if this is a forward directed edge, false otherwise



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# File 'lib/topolys/model.rb', line 943

def inverted
  @inverted
end

#length ⇒ Numeric (readonly)

Returns the length of this edge.

Returns:

  • (Numeric) —

    the length of this edge



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# File 'lib/topolys/model.rb', line 946

def length
  @length
end

#v0 ⇒ Vertex (readonly)

Returns the initial vertex, the directed edge origin.

Returns:

  • (Vertex) —

    the initial vertex, the directed edge origin



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# File 'lib/topolys/model.rb', line 934

def v0
  @v0
end

#v1 ⇒ Vertex (readonly)

Returns the second vertex, the directed edge terminal point.

Returns:

  • (Vertex) —

    the second vertex, the directed edge terminal point



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# File 'lib/topolys/model.rb', line 937

def v1
  @v1
end

#vector ⇒ Vector3D (readonly)

Returns the vector of this directed edge.

Returns:

  • (Vector3D) —

    the vector of this directed edge



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# File 'lib/topolys/model.rb', line 949

def vector
  @vector
end

Instance Method Details

#child_class ⇒ Object 



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# File 'lib/topolys/model.rb', line 1003

def child_class
  Edge
end

#edges ⇒ Object 



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# File 'lib/topolys/model.rb', line 1011

def edges
  @children
end

#parent_class ⇒ Object 



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# File 'lib/topolys/model.rb', line 999

def parent_class
  Wire
end

#recalculate ⇒ Object 



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# File 'lib/topolys/model.rb', line 973

def recalculate
  super()

  debug("before: ")

  # unlink from any previous edges
  @children.reverse_each {|child| Object.unlink(self, child)}

  # link with current edge
  Object.link(self, @edge)

  debug("after: ")

  # recompute cached properties and check invariants
  if @inverted
    @v0 = edge.v1
    @v1 = edge.v0
  else
    @v0 = edge.v0
    @v1 = edge.v1
  end

  @vector = @v1.point - @v0.point
  @length = @vector.magnitude
end

#to_json ⇒ Object 



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# File 'lib/topolys/model.rb', line 966

def to_json
  result = super
  result[:edge] = @edge.id
  result[:inverted] = @inverted
  return result
end

#wires ⇒ Object 



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# File 'lib/topolys/model.rb', line 1007

def wires
  @parents
end