Package cnuphys.swim

Class DefaultPlaneStopper

java.lang.Object
cnuphys.swim.DefaultPlaneStopper
All Implemented Interfaces:
IStopper
public class DefaultPlaneStopper extends Object implements IStopper

  • Constructor Summary

    Constructors
    Constructor
    Description
    DefaultPlaneStopper(double s0, double rMax, double sMax, Plane plane, double accuracy, int side)
    Plane stopper that checks Rmax (and sMax)
    DefaultPlaneStopper(double s0, double sMax, Plane plane, double accuracy, int side)
    Plane stopper that doesn't check max R (does check max path length)

  • Method Summary

    Modifier and Type
    Method
    Description
    double
    getFinalT()
    Get the final independent variable (typically path length in meters)
    int
    getSide()
    Get the current side
    void
    setFinalT(double finalT)
    Set the final independent variable (typically path length in meters)
    boolean
    stopIntegration(double s, double[] y)
    Given the current state of the integration, should we stop?
    boolean
    terminateIntegration(double t, double[] y)
    Generally this is the same as stop integration.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • DefaultPlaneStopper

      public DefaultPlaneStopper(double s0, double sMax, Plane plane, double accuracy, int side)
      Plane stopper that doesn't check max R (does check max path length)
      Parameters:
      s0 - starting path length in meters
      sMax - maximal path length in meters
      plane - the plane
      accuracy - the accuracy in meters
      side - the starting side. Set to any number > 100 if not known.

    • DefaultPlaneStopper

      public DefaultPlaneStopper(double s0, double rMax, double sMax, Plane plane, double accuracy, int side)
      Plane stopper that checks Rmax (and sMax)
      Parameters:
      s0 - starting path length in meters
      rMax - maximal radius in meters
      sMax - maximal path length in meters
      plane - the plane
      accuracy - the accuracy in meters
      side - the starting side. Set to any number > 100 if not known.

  • Method Details

    • getSide

      public int getSide()
      Get the current side
      Returns:
      the current side

    • stopIntegration

      public boolean stopIntegration(double s, double[] y)
      Description copied from interface: IStopper
      Given the current state of the integration, should we stop? This allows the integration to stop, for example, if some distance from the origin has been exceeded or if the independent variable passes some threshold. It won't be precise, because the check may not happen on every step, but it should be close.
      Specified by:
      stopIntegration in interface IStopper
      Parameters:
      s - the current value of the independent variable (typically pathlength)
      y - the current state vector (typically [x, y, z, vx, vy, vz])
      Returns:
      true if we should stop now.

    • getFinalT

      public double getFinalT()
      Description copied from interface: IStopper
      Get the final independent variable (typically path length in meters)
      Specified by:
      getFinalT in interface IStopper
      Returns:
      the final independent variable (typically path length in meters)

    • setFinalT

      public void setFinalT(double finalT)
      Description copied from interface: IStopper
      Set the final independent variable (typically path length in meters)
      Specified by:
      setFinalT in interface IStopper
      Parameters:
      finalT - the final independent variable (typically path length in meters)

    • terminateIntegration

      public boolean terminateIntegration(double t, double[] y)
      Generally this is the same as stop integration. So most will just return stopIntegration(). But sometimes stop just means we reset and integrate more. For example, with a fixed Z integrator we "stop" when we cross the z boundary however we are not done unless we are within tolerance. If we are within tolerance (on either side) we are really done!
      Specified by:
      terminateIntegration in interface IStopper
      Parameters:
      t - the current value of the independent variable (typically pathlength)
      y - the current state vector (typically [x, y, z, vx, vy, vz])
      Returns:
      true if we should stop now.