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com.cosylab.gui.components.range2
Class LogarithmicRange

java.lang.Object
  com.cosylab.gui.components.range2.LogarithmicRange

All Implemented Interfaces:

Range

public class LogarithmicRange
extends java.lang.Object
implements Range

Implementation of logarithmic range.

Version:

$id$

Author:

Ales Pucelj

Field Summary

static double

SMALLEST Constant defining smallest number that can be defined within range.

Constructor Summary

LogarithmicRange()

Method Summary

TickCalculator	getDefaultTickCalculator() Returns the default TickCaluclator employed by this Range.
double	toAbsolute(double relative, RangedValue val) Returns absolute value.
double	toRelative(double absolute, RangedValue val) Returns relative value in 0.0 to 1.0 range inclusively.
double	validate(double value) Checks whether value is positive.

Methods inherited from class java.lang.Object

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

Field Detail

SMALLEST

public static final double SMALLEST

Constant defining smallest number that can be defined within range.

See Also:

Constant Field Values

Constructor Detail

LogarithmicRange

public LogarithmicRange()

Method Detail

toAbsolute

public double toAbsolute(double relative,
                         RangedValue val)

Returns absolute value. Function is only guaranteed to return for values larger than 0.

Specified by:

toAbsolute in interface Range

Parameters:

relative - value in 0.0 to 1.0 range.

Returns:

absolute value.

See Also:

com.cosylab.gui.components.range.Range#toAbsolute(double)

toRelative

public double toRelative(double absolute,
                         RangedValue val)

Returns relative value in 0.0 to 1.0 range inclusively.

Specified by:

toRelative in interface Range

Parameters:

absolute - value, must be larger than 0.0.

Returns:

value in 0.0 to 1.0 range.

See Also:

com.cosylab.gui.components.range.Range#toRelative(double)

validate

public final double validate(double value)

Checks whether value is positive. If value is smaller than value defined by SMALLEST constant, this constant is returned. This prevents setting of values that cannot be representated on logarithmic scale.

Specified by:

validate in interface Range

Parameters:

value - to check.

Returns:

same as value parameter if valid, SMALLEST otherwise.

getDefaultTickCalculator

public TickCalculator getDefaultTickCalculator()

Description copied from interface: Range

Returns the default TickCaluclator employed by this Range.

Specified by:

getDefaultTickCalculator in interface Range

Returns: