com.partnersoft.v3x.apps.MapBrowser
Class ScalingScheme

java.lang.Object
  com.partnersoft.v3x.apps.MapBrowser.ScalingScheme

public class ScalingScheme
extends java.lang.Object

An object which manages the scaling policy for a map set. For example, most of our sets use prerendered base images, and therefore only have discrete scales to choose from. Others may be continuously scalable.

Constructor Summary

ScalingScheme()
Creates a simple continuous ScalingScheme.

ScalingScheme(java.util.ArrayList scales, Scale detailScale)
Creates a discrete ScalingScheme for the given ArrayList of Scales.

Method Summary

Scale	getDetailScale()
java.util.ArrayList	getScales()
int	indexOf(Scale scale) Returns the index of the given scale.
boolean	isBottom(Scale scaley) Returns true if the scale is the "bottommost" (least coarse) scale available; i.e.
boolean	isContinuous()
boolean	isDetail(Scale scaley) Returns true if the scale is at or below the "detail" scale.
boolean	isTop(Scale scaley) Returns true if the scale is the "topmost" (most coarse) scale available; i.e.
void	mergeScheme(ScalingScheme nother) Merges the given ScalingScheme into this one.
Scale	scaleAt(int index) Returns the scale at the given index.
void	setDetailScale(Scale newScale)
void	setScales(java.util.ArrayList newScales)
Scale	zoomIn(Scale scaley) Returns the next scale "lower" (finer) than the one given.
Scale	zoomOut(Scale scaley) Returns the next scale "higher" (coarser) than the one given.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScalingScheme

public ScalingScheme()

Creates a simple continuous ScalingScheme.

ScalingScheme

public ScalingScheme(java.util.ArrayList scales,
                     Scale detailScale)

Creates a discrete ScalingScheme for the given ArrayList of Scales.

Method Detail

isTop

public boolean isTop(Scale scaley)

Returns true if the scale is the "topmost" (most coarse) scale available; i.e. you can't zoom out any more.

isBottom

public boolean isBottom(Scale scaley)

Returns true if the scale is the "bottommost" (least coarse) scale available; i.e. you can't zoom in any more.

isDetail

public boolean isDetail(Scale scaley)

Returns true if the scale is at or below the "detail" scale.

zoomOut

public Scale zoomOut(Scale scaley)

Returns the next scale "higher" (coarser) than the one given.

zoomIn

public Scale zoomIn(Scale scaley)

Returns the next scale "lower" (finer) than the one given.

scaleAt

public Scale scaleAt(int index)

Returns the scale at the given index.

indexOf

public int indexOf(Scale scale)

Returns the index of the given scale.

mergeScheme

public void mergeScheme(ScalingScheme nother)

Merges the given ScalingScheme into this one. Modifies this one as follows: if both are continuous, the result is also continuous. If only one is continuous, the result is discrete and has the same scales as the discrete one. If both are discrete, the result is discrete and has a set of scales equal to the intersection of the two original sets of scales.

isContinuous

public boolean isContinuous()

getScales

public java.util.ArrayList getScales()

setScales

public void setScales(java.util.ArrayList newScales)

getDetailScale

public Scale getDetailScale()

setDetailScale

public void setDetailScale(Scale newScale)