com.badlogic.gdx.graphics.g3d.model

Class Node

java.lang.Object

com.badlogic.gdx.graphics.g3d.model.Node

public class Node
extends Object

A node is part of a hierarchy of Nodes in a Model. A Node encodes a transform relative to its parents. A Node can have child nodes. Optionally a node can specify a MeshPart and a Material to be applied to the mesh part.

Author:

badlogic

Field Summary

Fields

Modifier and Type	Field and Description
Array<Node>	children child nodes
Matrix4	globalTransform the global transform, product of local transform and transform of the parent node, calculated via calculateWorldTransform()
String	id the id, may be null, FIXME is this unique?
boolean	isAnimated Whether this node is currently being animated, if so the translation, rotation and scale values are not used.
Matrix4	localTransform the local transform, based on translation/rotation/scale (calculateLocalTransform()) or any applied animation
Node	parent parent node, may be null
Array<NodePart>	parts
Quaternion	rotation the rotation, relative to the parent, not modified by animations
Vector3	scale the scale, relative to the parent, not modified by animations
Vector3	translation the translation, relative to the parent, not modified by animations

Constructor Summary

Constructors

Constructor and Description
Node()

Method Summary

Methods

Modifier and Type	Method and Description
void	calculateBoneTransforms(boolean recursive)
BoundingBox	calculateBoundingBox(BoundingBox out) Calculate the bounding box of this Node.
BoundingBox	calculateBoundingBox(BoundingBox out, boolean transform) Calculate the bounding box of this Node.
Matrix4	calculateLocalTransform() Calculates the local transform based on the translation, scale and rotation
void	calculateTransforms(boolean recursive) Calculates the local and world transform of this node and optionally all its children.
Matrix4	calculateWorldTransform() Calculates the world transform; the product of local transform and the parent's world transform.
BoundingBox	extendBoundingBox(BoundingBox out) Extends the bounding box with the bounds of this Node.
BoundingBox	extendBoundingBox(BoundingBox out, boolean transform) Extends the bounding box with the bounds of this Node.
Node	getChild(String id, boolean recursive, boolean ignoreCase)
static Node	getNode(Array<Node> nodes, String id, boolean recursive, boolean ignoreCase) Helper method to recursive fetch a node from an array

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

id

public String id

the id, may be null, FIXME is this unique?

parent

public Node parent

parent node, may be null

children

public final Array<Node> children

child nodes

isAnimated

public boolean isAnimated

Whether this node is currently being animated, if so the translation, rotation and scale values are not used.

translation

public final Vector3 translation

the translation, relative to the parent, not modified by animations

rotation

public final Quaternion rotation

the rotation, relative to the parent, not modified by animations

scale

public final Vector3 scale

the scale, relative to the parent, not modified by animations

localTransform

public final Matrix4 localTransform

the local transform, based on translation/rotation/scale (calculateLocalTransform()) or any applied animation

globalTransform

public final Matrix4 globalTransform

the global transform, product of local transform and transform of the parent node, calculated via calculateWorldTransform()

parts

public Array<NodePart> parts

Constructor Detail

Node

public Node()

Method Detail

calculateLocalTransform

public Matrix4 calculateLocalTransform()

Calculates the local transform based on the translation, scale and rotation

Returns:

the local transform

calculateWorldTransform

public Matrix4 calculateWorldTransform()

Calculates the world transform; the product of local transform and the parent's world transform.

Returns:

the world transform

calculateTransforms

public void calculateTransforms(boolean recursive)

Calculates the local and world transform of this node and optionally all its children.

Parameters:

recursive - whether to calculate the local/world transforms for children.

calculateBoneTransforms

public void calculateBoneTransforms(boolean recursive)

calculateBoundingBox

public BoundingBox calculateBoundingBox(BoundingBox out)

Calculate the bounding box of this Node. This is a potential slow operation, it is advised to cache the result.

calculateBoundingBox

public BoundingBox calculateBoundingBox(BoundingBox out,
                               boolean transform)

Calculate the bounding box of this Node. This is a potential slow operation, it is advised to cache the result.

extendBoundingBox

public BoundingBox extendBoundingBox(BoundingBox out)

Extends the bounding box with the bounds of this Node. This is a potential slow operation, it is advised to cache the result.

extendBoundingBox

public BoundingBox extendBoundingBox(BoundingBox out,
                            boolean transform)

Extends the bounding box with the bounds of this Node. This is a potential slow operation, it is advised to cache the result.

getChild

public Node getChild(String id,
            boolean recursive,
            boolean ignoreCase)

Parameters:

recursive - false to fetch a root child only, true to search the entire node tree for the specified node.

Returns:

The node with the specified id, or null if not found.

getNode

public static Node getNode(Array<Node> nodes,
           String id,
           boolean recursive,
           boolean ignoreCase)

Helper method to recursive fetch a node from an array

Parameters:

recursive - false to fetch a root node only, true to search the entire node tree for the specified node.

Returns:

The node with the specified id, or null if not found.