Package com.jme3.anim

Class MatrixJointModelTransform

java.lang.Object

com.jme3.anim.MatrixJointModelTransform

All Implemented Interfaces:

JointModelTransform

public class MatrixJointModelTransform
extends Object
implements JointModelTransform

An implementation of JointModelTransform that accumulates joint transformations into a Matrix4f. This approach is particularly useful for correctly handling non-uniform scaling within an armature hierarchy, as Matrix4f can represent non-uniform scaling directly, unlike Transform, which typically handles uniform scaling.

This class maintains a single Matrix4f to represent the accumulated model-space transform of the joint it's associated with.

Constructor Summary

Constructors

Constructor	Description
MatrixJointModelTransform()

Method Summary

Modifier and Type	Method	Description
void	applyBindPose(Transform localTransform, Matrix4f inverseModelBindMatrix, Joint parent)	Configure joint's local transform for bind pose.
Transform	getModelTransform()	Determine the joint's transform in model space.
Matrix4f	getModelTransformMatrix()	Access the model transform.
void	getOffsetTransform(Matrix4f outTransform, Matrix4f inverseModelBindMatrix)	Determine the joint's skinning transform.
void	updateModelTransform(Transform localTransform, Joint parent)	Update the joint's transform in model space.

Methods inherited from class java.lang.Object

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

Constructor Details

MatrixJointModelTransform

public MatrixJointModelTransform()

Method Details

updateModelTransform

public void updateModelTransform(Transform localTransform,
 Joint parent)

Description copied from interface: JointModelTransform

Update the joint's transform in model space.

Specified by:

updateModelTransform in interface JointModelTransform

Parameters:

localTransform - the joint's local transform (not null, unaffected)

parent - the joint's parent, or null for a root joint

getOffsetTransform

public void getOffsetTransform(Matrix4f outTransform,
 Matrix4f inverseModelBindMatrix)

Description copied from interface: JointModelTransform

Determine the joint's skinning transform.

Specified by:

getOffsetTransform in interface JointModelTransform

Parameters:

outTransform - storage for the result (modified if not null)

inverseModelBindMatrix - the joint's inverse model bind matrix (not null, unaffected)

applyBindPose

public void applyBindPose(Transform localTransform,
 Matrix4f inverseModelBindMatrix,
 Joint parent)

Description copied from interface: JointModelTransform

Configure joint's local transform for bind pose.

Specified by:

applyBindPose in interface JointModelTransform

Parameters:

localTransform - the joint's local transform (not null, unaffected)

inverseModelBindMatrix - the joint's inverse model bind matrix (not null, unaffected)

parent - the joint's parent, or null for a root joint

getModelTransformMatrix

public Matrix4f getModelTransformMatrix()

Access the model transform.

Returns:

the pre-existing instance

getModelTransform

public Transform getModelTransform()

Description copied from interface: JointModelTransform

Determine the joint's transform in model space.

Specified by:

getModelTransform in interface JointModelTransform

Returns:

a new instance or a pre-existing one