kcl.waterloo.graphics.data

Class PrimitiveDoubleBuffer

java.lang.Object

kcl.waterloo.graphics.data.PrimitiveDoubleBuffer

public class PrimitiveDoubleBuffer
extends java.lang.Object

Wrapper class for a double[]. This class permits double arrays contained as a property in the wrapper to be passed by reference - useful in environments that support that for Java objects but not for primitive data types e.g. MATLAB

Constructor Summary

Constructors

Constructor and Description
PrimitiveDoubleBuffer() Constructs a new instance with a zero length vector.
PrimitiveDoubleBuffer(double[] arr) Constructs a new instance copying the input.
PrimitiveDoubleBuffer(double[] arr, boolean copyFlag) Constructs a new instance.
PrimitiveDoubleBuffer(int sz) Constructs a new instance with a vector of length sz.

Method Summary

Modifier and Type	Method and Description
double[]	getData() Returns a copy of the wrapped double[] vector
double[]	getDataRef() Returns a reference to the wrapped data vector.
int	getDimension() Returns the length of the wrapped double[]
double	getEntry(int index) Returns the entry at specified index
void	setData(double[] arr) Replaces the current wrapped double[] with a copy of the input.
void	setDataRef(double[] arr) Replaces the current wrapped double[] with a reference to the input.
void	setEntry(int index, double val) Sets the entry at the specified index

Methods inherited from class java.lang.Object

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

Constructor Detail

PrimitiveDoubleBuffer

public PrimitiveDoubleBuffer()

Constructs a new instance with a zero length vector.

PrimitiveDoubleBuffer

public PrimitiveDoubleBuffer(int sz)

Constructs a new instance with a vector of length sz.

Parameters:

sz -

PrimitiveDoubleBuffer

public PrimitiveDoubleBuffer(double[] arr)

Constructs a new instance copying the input.

Parameters:

arr -

PrimitiveDoubleBuffer

public PrimitiveDoubleBuffer(double[] arr,
                             boolean copyFlag)

Constructs a new instance. If copyFlag is true the input is copied, if false is is referenced in the wrapper.

Parameters:

arr -

copyFlag -

Method Detail

getData

public double[] getData()

Returns a copy of the wrapped double[] vector

Returns:

the data

getDataRef

public final double[] getDataRef()

Returns a reference to the wrapped data vector. Note: This exposes a reference to the data vector to external code.

Returns:

a reference to the data vector.

setData

public final void setData(double[] arr)

Replaces the current wrapped double[] with a copy of the input.

Parameters:

arr -

setDataRef

public final void setDataRef(double[] arr)

Replaces the current wrapped double[] with a reference to the input. NOTE: As the reference is external, this exposes data as an external mutable array.

Parameters:

arr -

getEntry

public double getEntry(int index)

Returns the entry at specified index

Parameters:

index -

Returns:

a double

setEntry

public void setEntry(int index,
                     double val)

Sets the entry at the specified index

Parameters:

index -

val -

getDimension

public int getDimension()

Returns the length of the wrapped double[]

Returns:

an int