visad.util

Class DualRes

java.lang.Object

visad.util.DualRes

Direct Known Subclasses:

ResSwitcher

public class DualRes
extends java.lang.Object

Maintains two representations for a given data reference: one at high (normal) resolution, and one at low (scaled-down) resolution. When greater rendering speed is necessary, programs can utilize the computed low-resolution data. When more detail is required, programs can switch back to the hi-resolution data.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	DEBUG Debugging flag.

Constructor Summary

Constructors

Constructor and Description
DualRes(DataReferenceImpl ref) Constructs an object to maintain both high- and low-resolution representations for the referenced data.

Method Summary

Modifier and Type	Method and Description
DataReferenceImpl	getHighResReference() Gets the DataReference corresponding to the full-resolution data.
DataReferenceImpl	getLowResReference() Gets the DataReference corresponding to the scaled-down data.
double	getResolutionScale() Gets the factor by which the low-resolution representation is scaled down from the high-resolution one.
static FieldImpl	rescale(FieldImpl field, double scale) Rescales a field by the given scale factor.
static FieldImpl	rescale(FieldImpl field, int[] lengths) Rescales a field by the given scale factor.
void	setResolutionScale(double scale) Sets the factor by which the low-resolution representation is scaled down from the high-resolution one.

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

public static boolean DEBUG

Debugging flag.

Constructor Detail

DualRes

public DualRes(DataReferenceImpl ref)
        throws VisADException,
               java.rmi.RemoteException

Constructs an object to maintain both high- and low-resolution representations for the referenced data.

Throws:

VisADException

java.rmi.RemoteException

Method Detail

rescale

public static FieldImpl rescale(FieldImpl field,
                                double scale)
                         throws VisADException,
                                java.rmi.RemoteException

Rescales a field by the given scale factor.

Throws:

VisADException

java.rmi.RemoteException

rescale

public static FieldImpl rescale(FieldImpl field,
                                int[] lengths)
                         throws VisADException,
                                java.rmi.RemoteException

Rescales a field by the given scale factor.

Throws:

VisADException

java.rmi.RemoteException

setResolutionScale

public void setResolutionScale(double scale)
                        throws VisADException

Sets the factor by which the low-resolution representation is scaled down from the high-resolution one.

Throws:

VisADException

getResolutionScale

public double getResolutionScale()

Gets the factor by which the low-resolution representation is scaled down from the high-resolution one.

getHighResReference

public DataReferenceImpl getHighResReference()

Gets the DataReference corresponding to the full-resolution data.

getLowResReference

public DataReferenceImpl getLowResReference()

Gets the DataReference corresponding to the scaled-down data.