Dopri45Scheme.groovy

package eu.mihosoft.vrl.user;

@ComponentInfo(name="Dopri45Scheme", category="ODE")
public class Dopri45Scheme implements EmbeddedRKSchemeInterface, java.io.Serializable {
	private static final long serialVersionUID=1L;

  public double[] getC() {
    // add your code
  }

  public double[][] getA() {
    // add your code
  }

  public int getOrder() {
    // add your code
  }

  public double[] getBOrderP() {
    // add your code
  }

  public double[] getBOrderPPlusOne() {
    // add your code
  }

}

EmbeddedRKTemplate.groovy

package eu.mihosoft.vrl.user;
import eu.mihosoft.vrl.user.Dopri45Scheme;
import eu.mihosoft.vrl.math.Trajectory;
import eu.mihosoft.vrl.user.VectorRhsODEInterface;


@ComponentInfo(name="EmbeddedRKTemplate", category="ODE")
public class EmbeddedRKTemplate implements Serializable{
  private static final long serialVersionUID=1L;
  
  // multi-out is only typesafe in the UI (the actual return type is Object[])
  @OutputInfo(name="Results:", style="multi-out",
      elemTypes=[VectorTrajectory.class, Trajectory.class, Trajectory.class, Trajectory.class],
      elemNames=["Solution", "TOL", "Local Error", "Step Size h"]  
  )
  public Object[] run(
                    @ParamInfo(name="f(t,u)")
                    VectorRhsODEInterface f,
                    @ParamGroupInfo(group="Initial Values - u|true|no description")
                    @ParamInfo(name="u", style="array", options="serialization=false")
                    double[] u0,
                    @ParamGroupInfo(group="Step & Time;Interval - t|true|no description")
                    @ParamInfo(name="t0", options="value=0.0D")
                    double t0,
                    @ParamGroupInfo(group="Step & Time;Interval - t")
                    @ParamInfo(name="tn", options="value=1.0D")
                    double tn,
                    @ParamGroupInfo(group="Step & Time;Step Size Control|false|no description")
                    @ParamInfo(name="hmax", options="value=0.1")
                    double hmax,
                    @ParamGroupInfo(group="Step & Time;Step Size Control")
                    @ParamInfo(name="hmin", options="value=1e-4D")
                    double hmin,
                    @ParamGroupInfo(group="Step & Time;Step Size Control")
                    @ParamInfo(name="TOL", options="value=1e-8D")
                    double tol,
                    @ParamGroupInfo(group="Step & Time;Step Size Control")
                    @ParamInfo(name="Filter Output", style="default", options="value=1")
                    int filter) {

     // add your code here
     
     return [solVectorTrajectory, tolTrajectory, localErrorTrajectory, stepSizeTrajectory]
  }

  public void stop() {
    // add your code here
  }

}