visad.util
Class DualRes

java.lang.Object
  visad.util.DualRes

Direct Known Subclasses:

ResSwitcher

public class DualRes
extends 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

static boolean	DEBUG Debugging flag.
protected DataReferenceImpl	hi_ref High-resolution data reference.
protected DataReferenceImpl	lo_ref Low-resolution data reference.

Constructor Summary

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

Method Summary

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

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

Field Detail

DEBUG

public static boolean DEBUG

Debugging flag.

hi_ref

protected DataReferenceImpl hi_ref

High-resolution data reference.

lo_ref

protected DataReferenceImpl lo_ref

Low-resolution data reference.

Constructor Detail

DualRes

public DualRes(DataReferenceImpl ref)
        throws VisADException,
               RemoteException

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

Throws:

VisADException

RemoteException

Method Detail

rescale

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

Rescales a field by the given scale factor.

Throws:

VisADException

RemoteException

rescale

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

Rescales a field by the given scale factor.

Throws:

VisADException

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.