Class: Disp3D::SceneGraph

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SceneGraph

Returns a new instance of SceneGraph.



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# File 'lib/scene_graph.rb', line 7

def initialize()
  @root_node = NodeCollection.new()
end

Instance Attribute Details

#root_node ⇒ Object

Returns the value of attribute root_node.



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# File 'lib/scene_graph.rb', line 5

def root_node
  @root_node
end

Instance Method Details

#add(node) ⇒ Object 



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# File 'lib/scene_graph.rb', line 16

def add(node)
  @root_node.add(node)
end

#bounding_box ⇒ Object 



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# File 'lib/scene_graph.rb', line 24

def bounding_box
  return @root_node.box
end

#center ⇒ Object 



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# File 'lib/scene_graph.rb', line 28

def center
  bb = self.bounding_box
  return nil if bb.nil?
  return bb.center
end

#gl_display(current_view) ⇒ Object 



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# File 'lib/scene_graph.rb', line 11

def gl_display(current_view)
  NodePathDB.init
  @root_node.draw(current_view)
end

#open(&block) ⇒ Object 



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# File 'lib/scene_graph.rb', line 20

def open(&block)
  @root_node.open(&block)
end

#radius ⇒ Object 



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# File 'lib/scene_graph.rb', line 34

def radius
  bb = self.bounding_box
  return 0 if bb.nil?
  length = bb.length
  orth_length = Math.sqrt( length[0]*length[0] + length[1]*length[1] + length[2]*length[2] )
  orth_length/2.0
end