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NurbsPositionInterpolator Class Reference
[Standard Node Types]

#include <nurbspositioninterpolator.h>

Inherits Node.

Inheritance diagram for NurbsPositionInterpolator:

Inheritance graph
[legend]
List of all members.

Public Member Functions

 NurbsPositionInterpolator (const char *name="")
virtual ~NurbsPositionInterpolator ()
virtual unsigned int nbFields () const
virtual FieldHandle field (const std::string &n)
virtual FieldHandle field (const unsigned int i)
virtual bool isSetToDefaultValue (const unsigned int i) const
virtual unsigned int nbEventsIn () const
virtual EventInHandle eventIn (const std::string &n)
virtual EventInHandle eventIn (const unsigned int i)
virtual unsigned int nbEventsOut () const
virtual EventOutHandle eventOut (const std::string &n)
virtual EventOutHandle eventOut (const unsigned int i)
const char * typeName () const
virtual Node * duplicate () const
virtual Node * duplicate (std::map< const Node *, Node * > &) const

Public Attributes

Exposed Fields
A field that is capable of receiving events via an eventIn to change its value(s), and generating events via an eventOut when its value(s) change.

SFInt32 dimension
MFVec3f keyValue
MFFloat keyWeight
MFFloat knot
SFInt32 order
Events In
EventIn< SFFloat > set_fraction
EventIn< SFInt32 > set_dimension
EventIn< MFVec3f > set_keyValue
EventIn< MFFloat > set_keyWeight
EventIn< MFFloat > set_knot
EventIn< SFInt32 > set_order
Events Out
EventOut< SFVec3f > value_changed
EventOut< SFInt32 > dimension_changed
EventOut< MFVec3f > keyValue_changed
EventOut< MFFloat > keyWeight_changed
EventOut< MFFloat > knot_changed
EventOut< SFInt32 > order_changed

Detailed Description

Here is the documentation for this node type, from the ISO standard.

6.47 NurbsPositionInterpolator

NurbsPositionInterpolator describes a 3D NURBS Curve using dimension, keyValue, keyWeight, knot, and order as described for the NurbsCurve node.

The fields set_fraction and value_changed have the same meaning as in the base VRML PositionInterpolator.

Sending a set_fraction input computes a 3D position on the curve, which is sent by value_changed. The set_fraction value is used as the input value for the tessellation function. Thereby, the knot corresponds to the key field of a conventional interpolator node; i.e., if the set_fraction value is within [0;1] and the knot vector within [0;2], only half of the curve is computed.

Constructor & Destructor Documentation

NurbsPositionInterpolator (  const char *  name = ""  ) 
 

Construct a node with all its fields set to default value, which is equivalent to the code below: 

  dimension = 0;
  order = 4;

~NurbsPositionInterpolator (   )  [virtual]
 

Virtual destructor, does nothing

Member Function Documentation

wrl::Node * duplicate (  std::map< const Node *, Node * > &   )  const [virtual]
 

Implements Node.

wrl::Node * duplicate (   )  const [virtual]
 

Returns a deep copy of this node, that is a fully independant node with all children (if any) also copied. This is mainly useful for instanciating protos.

Implements Node.

wrl::Node::EventInHandle eventIn (  const unsigned int  n  )  [virtual]
 

Return a handle on the i th event in of the node or a "unknown" typed handle if there is no such node. Here is how i is related to fields:

  • 0 : set_fraction
  • 1 : set_dimension
  • 2 : set_keyValue
  • 3 : set_keyWeight
  • 4 : set_knot
  • 5 : set_order

This function is useful, with nbEventsIn() if you want to traverse all events in of a Node.

Implements Node.

wrl::Node::EventInHandle eventIn (  const std::string &  n  )  [virtual]
 

Return a handle on the event in named n of the node or a "unknown" typed handle if there is no such event. Valid names are:

  • set_fraction
  • set_dimension
  • set_keyValue
  • set_keyWeight
  • set_knot
  • set_order

Implements Node.

wrl::Node::EventOutHandle eventOut (  const unsigned int  n  )  [virtual]
 

Return a handle on the i th event out of the node or a "unknown" typed handle if there is no such node. Here is how i is related to fields:

  • 0 : value_changed
  • 1 : dimension_changed
  • 2 : keyValue_changed
  • 3 : keyWeight_changed
  • 4 : knot_changed
  • 5 : order_changed This function is useful, with nbEventsOut() if you want to traverse all events in of a Node.

Implements Node.

wrl::Node::EventOutHandle eventOut (  const std::string &  n  )  [virtual]
 

Return a handle on the event out named n of the node or a "unknown" typed handle if there is no such event. Valid names are:

  • value_changed
  • dimension_changed
  • keyValue_changed
  • keyWeight_changed
  • knot_changed
  • order_changed

Implements Node.

wrl::Node::FieldHandle field (  const unsigned int  n  )  [virtual]
 

Return a handle on the i th field of the node or a "unknown" typed handle if there is no such node. Here is how i is related to fields:

  • 0 : dimension
  • 1 : keyValue
  • 2 : keyWeight
  • 3 : knot
  • 4 : order This function is useful, with nbFields() if you want to traverse all fields of a Node.

Implements Node.

wrl::Node::FieldHandle field (  const std::string &  n  )  [virtual]
 

Return a handle on the field named n of the node or a "unknown" typed handle if there is no such field. Valid names are:

  • dimension
  • keyValue
  • keyWeight
  • knot
  • order

Implements Node.

bool isSetToDefaultValue (  const unsigned int  i  )  const [virtual]
 

Implements Node.

unsigned int nbEventsIn (   )  const [inline, virtual]
 

Returns the number of events in for this node type.

Implements Node.

unsigned int nbEventsOut (   )  const [inline, virtual]
 

Returns the number of events out for this node type.

Implements Node.

unsigned int nbFields (   )  const [inline, virtual]
 

Returns the number of fields (exposed or not) for this node type.

Implements Node.

const char * typeName (   )  const [inline, virtual]
 

Returns "NurbsPositionInterpolator". Useful for printing.

Implements Node.

Member Data Documentation

SFInt32 dimension
 

See Detailed Description for meaning of this field. Default value is set to 

       dimension = 0;

EventOut<SFInt32> dimension_changed
 

Changed event associated to exposedField dimension

MFVec3f keyValue
 

See Detailed Description for meaning of this field. Default value is set to MFVec3f default value

EventOut<MFVec3f> keyValue_changed
 

Changed event associated to exposedField keyValue

MFFloat keyWeight
 

See Detailed Description for meaning of this field. Default value is set to MFFloat default value

EventOut<MFFloat> keyWeight_changed
 

Changed event associated to exposedField keyWeight

MFFloat knot
 

See Detailed Description for meaning of this field. Default value is set to MFFloat default value

EventOut<MFFloat> knot_changed
 

Changed event associated to exposedField knot

SFInt32 order
 

See Detailed Description for meaning of this field. Default value is set to 

       order = 4;

EventOut<SFInt32> order_changed
 

Changed event associated to exposedField order

EventIn<SFInt32> set_dimension
 

Set event associated to exposedField dimension

EventIn<SFFloat> set_fraction
 

See Detailed Description for meaning of this event.

EventIn<MFVec3f> set_keyValue
 

Set event associated to exposedField keyValue

EventIn<MFFloat> set_keyWeight
 

Set event associated to exposedField keyWeight

EventIn<MFFloat> set_knot
 

Set event associated to exposedField knot

EventIn<SFInt32> set_order
 

Set event associated to exposedField order

EventOut<SFVec3f> value_changed
 

See Detailed Description for meaning of this event.

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