Package org.web3d.vrml.renderer.common.input.dis

Class Quat4dVariable

java.lang.Object

org.web3d.vrml.renderer.common.input.dis.Quat4dVariable

All Implemented Interfaces:

SolverTarget

public class Quat4dVariable
extends Object
implements SolverTarget

A variable for solving rotation convergence.

Version:

$Revision: 1.5 $

Author:

Andrzej Kapolka, Alan Hudson

Constructor Summary

Constructors

Constructor	Description
Quat4dVariable(int order, Solver pSolver)	Constructor and instance of this variable

Method Summary

Modifier and Type	Method	Description
void	decodeState(double[] state)	Decodes the state of this variable from the format used by the differential equation solver.
void	encodeState()	Encodes the state of this variable (its value and the values of its derivatives) into a format suitable for use by the differential equation solver.
void	getDerivatives(javax.vecmath.Vector3d[] result)	Retrieves the values of the derivatives of this variable.
void	getRatesOfChange(double[] values, double time, double[] results)	Returns the rates of change corresponding to the given values and time.
void	getValue(javax.vecmath.Quat4d result)	Retrieves the current value of this variable.
void	interpolate(Quat4dVariable v1, Quat4dVariable v2, double alpha, long newReferenceTime)	Sets the state of this variable to an interpolated state between the two specified variables.
void	makeCurrent(long newReferenceTime)	Makes the values of this variable current by integrating over time.
void	set(javax.vecmath.Quat4d pValue, javax.vecmath.Vector3d[] pDerivatives, long pReferenceTime)	Sets the state of this variable.
void	set(Quat4dVariable pVariable)	Sets the state of this variable to that of another variable.

Methods inherited from class java.lang.Object

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

Constructor Details

Quat4dVariable

public Quat4dVariable(int order,
 Solver pSolver)

Constructor and instance of this variable

Parameters:

order - the order of the converger

pSolver - The solver to use, or null to generate one locally

Method Details

set

public void set(javax.vecmath.Quat4d pValue,
 javax.vecmath.Vector3d[] pDerivatives,
 long pReferenceTime)

Sets the state of this variable.

Parameters:

pValue - the value of the variable

pDerivatives - the value of the variable's derivatives

pReferenceTime - the reference time at which the values were valid

set

public void set(Quat4dVariable pVariable)

Sets the state of this variable to that of another variable.

Parameters:

pVariable - the variable to copy

interpolate

public void interpolate(Quat4dVariable v1,
 Quat4dVariable v2,
 double alpha,
 long newReferenceTime)

Sets the state of this variable to an interpolated state between the two specified variables.

Parameters:

v1 - the starting variable

v2 - the ending variable

alpha - the interpolation parameter

newReferenceTime - the new reference time

makeCurrent

public void makeCurrent(long newReferenceTime)

Makes the values of this variable current by integrating over time.

Parameters:

newReferenceTime - the new reference time

encodeState

public void encodeState()

Encodes the state of this variable (its value and the values of its derivatives) into a format suitable for use by the differential equation solver.

decodeState

public void decodeState(double[] state)

Decodes the state of this variable from the format used by the differential equation solver.

Parameters:

state - the state vector to decode

getValue

public void getValue(javax.vecmath.Quat4d result)

Retrieves the current value of this variable.

Parameters:

result - a Quat4d to hold the result

getDerivatives

public void getDerivatives(javax.vecmath.Vector3d[] result)

Retrieves the values of the derivatives of this variable.

Parameters:

result - an array to hold the result

getRatesOfChange

public void getRatesOfChange(double[] values,
 double time,
 double[] results)

Returns the rates of change corresponding to the given values and time.

Specified by:

getRatesOfChange in interface SolverTarget

Parameters:

values - the values at which to evaluate the rates of change

time - the time at which to evaluate the rates of change

results - an array to hold the calculated rates