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## igeo
Class IFieldGeo

    java.lang.Object
      igeo.IFieldGeo

All Implemented Interfaces:
  IFieldI

Direct Known Subclasses:
  I2DCurveFieldGeo, I2DSurfaceFieldGeo, ICurveFieldGeo, IPointFieldGeo, ISurfaceFieldGeo

    public abstract class IFieldGeo

extends java.lang.Object
implements IFieldI

abstract class of 2D vector filed.

Author:
  Satoru Sugihara

Nested Class Summary
`static class` | `IFieldGeo.Decay` type of decay from surface position

Field Summary
`boolean` | `bidirectional` if bidirectional is on, field force vector is flipped when velocity of particle is going opposite
`boolean` | `constantIntensity` if output vector is besed on constant length (intensity) or variable depending geometry when curve or surface tangent is used
`IFieldGeo.Decay` | `decay`
`double` | `intensity` intensity of vector output
`double` | `threshold` threshold for decay.

Constructor Summary
`IFieldGeo()`

Method Summary
`IFieldGeo` | `bidirectional(boolean b)` if bidirectional is on, field force vector is flipped when velocity of particle is going opposite
`IFieldGeo` | `constantIntensity(boolean b)` if output vector is besed on constant length (intensity) or variable depending geometry when curve or surface tangent is used
`IFieldGeo.Decay` | `decay()`
`IFieldGeo` | `gauss(double threshold)` alias of gaussianDecay
`IFieldGeo` | `gaussian(double threshold)` alias of gaussianDecay
`IFieldGeo` | `gaussianDecay(double threshold)` set Gaussian decay; Threshold is used as double of standard deviation (when distance is eqaul to threshold, output is 13.5% of original).
`double` | `intensity()` get output intensity
`IFieldGeo` | `intensity(double i)` set output intensity
`IFieldGeo` | `linear(double threshold)` alias of linearDecay
`IFieldGeo` | `linearDecay(double threshold)` set linear decay; When distance is equal to threshold, output is zero.
`IFieldGeo` | `noDecay()` set no decay
`double` | `threshold()` get decay threshold
`IFieldGeo` | `threshold(double t)` set decay threshold

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface igeo.IFieldI
`del, get, get`

Field Detail

### decay

    public IFieldGeo.Decay decay

### threshold

    public double threshold

  threshold for decay. When decay is None, threshold isn't used. In case of Linear, when distance is equal to threshold, output is zero. In Gaussian, threshold is used as double of standard deviation (when distance is eqaul to threshold, output is 13.5% of original).

### intensity

    public double intensity

  intensity of vector output

### constantIntensity

    public boolean constantIntensity

  if output vector is besed on constant length (intensity) or variable depending geometry when curve or surface tangent is used

### bidirectional

    public boolean bidirectional

  if bidirectional is on, field force vector is flipped when velocity of particle is going opposite

Constructor Detail

### IFieldGeo

    public IFieldGeo()

Method Detail

### noDecay

    public IFieldGeo noDecay()

  set no decay

  Specified by:
    `noDecay` in interface `IFieldI`

### linearDecay

    public IFieldGeo linearDecay(double threshold)

  set linear decay; When distance is equal to threshold, output is zero.

  Specified by:
    `linearDecay` in interface `IFieldI`

### linear

    public IFieldGeo linear(double threshold)

  alias of linearDecay

  Specified by:
    `linear` in interface `IFieldI`

### gaussianDecay

    public IFieldGeo gaussianDecay(double threshold)

  set Gaussian decay; Threshold is used as double of standard deviation (when distance is eqaul to threshold, output is 13.5% of original).

  Specified by:
    `gaussianDecay` in interface `IFieldI`

### gaussian

    public IFieldGeo gaussian(double threshold)

  alias of gaussianDecay

  Specified by:
    `gaussian` in interface `IFieldI`

### gauss

    public IFieldGeo gauss(double threshold)

  alias of gaussianDecay

  Specified by:
    `gauss` in interface `IFieldI`

### decay

    public IFieldGeo.Decay decay()

### constantIntensity

    public IFieldGeo constantIntensity(boolean b)

  if output vector is besed on constant length (intensity) or variable depending geometry when curve or surface tangent is used

  Specified by:
    `constantIntensity` in interface `IFieldI`

### bidirectional

    public IFieldGeo bidirectional(boolean b)

  if bidirectional is on, field force vector is flipped when velocity of particle is going opposite

  Specified by:
    `bidirectional` in interface `IFieldI`

### threshold

    public IFieldGeo threshold(double t)

  set decay threshold

  Specified by:
    `threshold` in interface `IFieldI`

### threshold

    public double threshold()

  Description copied from interface: `IFieldI`
  get decay threshold

  Specified by:
    `threshold` in interface `IFieldI`

### intensity

    public IFieldGeo intensity(double i)

  set output intensity

  Specified by:
    `intensity` in interface `IFieldI`

### intensity

    public double intensity()

  Description copied from interface: `IFieldI`
  get output intensity

  Specified by:
    `intensity` in interface `IFieldI`

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