• derived nodes inherit all messages from their base classes
  
• see reset method for default settings
  
• see the interpolate node for more information
  

constructor distance_

destructor ~distance_

method reset

1 clear node name

method message

1 clear or set the node and optional user body part

1.1 if number of arguments is greater than zero

1.1.1 if node type is user then

1.1.1.1 if second argument is "head"

1.1.1.1.1 set node to user head

1.1.1.2 if second argument is "body"

1.1.1.2.1 for each user child

1.1.1.2.1.1 if child is of type body then set node

1.1.1.3 if second argument is "wand"

1.1.1.3.1 if user has a wand then

1.1.1.3.1.1 use specified wand number

1.2 else, clear the node name

2 set the bounding sphere reporting mode

method app

1 if node is set

1.1 calculate user distance
1.2 calculate interpolated array values