XdkWrl: NurbsGroup Class Reference

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# NurbsGroup Class Reference
[Standard Node Types]

`#include <nurbsgroup.h>`

Inherits Node.

List of all members.

## Public Member Functions
| NurbsGroup (const char *name="")
virtual | ~NurbsGroup ()
virtual unsigned int | nbFields () const
virtual FieldHandle | field (const std::string &n)
virtual FieldHandle | field (unsigned int i)
virtual bool | isSetToDefaultValue (unsigned int i) const
virtual unsigned int | nbEventsIn () const
virtual EventInHandle | eventIn (const std::string &n)
virtual EventInHandle | eventIn (unsigned int i)
virtual unsigned int | nbEventsOut () const
virtual EventOutHandle | eventOut (const std::string &n)
virtual EventOutHandle | eventOut (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.
MFNode | children
SFFloat | tessellationScale
Fields
A property or attribute of a node. Each node type has a fixed set of fields. Fields may contain various kinds of data and one or many values. Each field has a default value.
SFVec3f | bboxCenter
SFVec3f | bboxSize
Events In
EventIn< MFNode > | addChildren
EventIn< MFNode > | removeChildren
EventIn< MFNode > | set_children
EventIn< SFFloat > | set_tessellationScale
Events Out
EventOut< MFNode > | children_changed
EventOut< SFFloat > | tessellationScale_changed

## Detailed Description

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

## 6.46 NurbsGroup

The NurbsGroup node groups a set of NurbsSurface nodes to a common group. This provides a hint to the browser to treat the set of NurbsSurface nodes appearing in a Shape node in children as a unit during tessellation to enforce tessellation continuity along borders. The tessellationScale parameter scales the tessellation values in lower-level NurbsCurve and NurbsSurface nodes. If a set of NurbsSurfaces uses a matching set of control points along the borders, this results in a common tessellation stepping.

## Constructor & Destructor Documentation

NurbsGroup | ( | const char * | name = `""` | ) |

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

      tessellationScale = 1.0f;
      bboxCenter.setXYZ(0,0,0);
      bboxSize.setXYZ(-1,-1,-1);

~NurbsGroup | ( |  | ) | `[virtual]`

Virtual destructor, does nothing

## Member Function Documentation

unsigned int nbFields | ( |  | ) | const`[inline, virtual]`

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

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:

- children
- tessellationScale
- bboxCenter
- bboxSize

Implements Node.

wrl::Node::FieldHandle field | ( | 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 : children
- 1 : tessellationScale
- 2 : bboxCenter
- 3 : bboxSize This function is useful, with nbFields() if you want to traverse all fields of a Node.

Implements Node.

bool isSetToDefaultValue | ( | 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.

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:

- addChildren
- removeChildren
- set_children
- set_tessellationScale

Implements Node.

wrl::Node::EventInHandle eventIn | ( | 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 : addChildren
- 1 : removeChildren
- 2 : set_children
- 3 : set_tessellationScale

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

Implements Node.

unsigned int nbEventsOut | ( |  | ) | const`[inline, virtual]`

Returns the number of events out for this node type.

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:

- children_changed
- tessellationScale_changed

Implements Node.

wrl::Node::EventOutHandle eventOut | ( | 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 : children_changed
- 1 : tessellationScale_changed This function is useful, with nbEventsOut() if you want to traverse all events in of a Node.

Implements Node.

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

Returns `"NurbsGroup"`. Useful for printing.

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.

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

Implements Node.

## Member Data Documentation

MFNode children

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

SFFloat tessellationScale

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

           tessellationScale = 1.0f;

SFVec3f bboxCenter

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

           bboxCenter.setXYZ(0,0,0);

SFVec3f bboxSize

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

           bboxSize.setXYZ(-1,-1,-1);

EventIn<MFNode> addChildren

See Detailed Description for meaning of this event.

EventIn<MFNode> removeChildren

See Detailed Description for meaning of this event.

EventIn<MFNode> set_children

Set event associated to exposedField children

EventIn<SFFloat> set_tessellationScale

Set event associated to exposedField tessellationScale

EventOut<MFNode> children_changed

Changed event associated to exposedField children

EventOut<SFFloat> tessellationScale_changed

Changed event associated to exposedField tessellationScale

Generated on 5 Jan 2007 with version 1.5.1. |