java.lang.Object
- org.robwork.sdurw_trajectory.TrajectoryIterator_dPtr

```
public class TrajectoryIterator_dPtr
extends java.lang.Object
```
Ptr stores a pointer and optionally takes ownership of the value.

Constructor Summary

Constructors
Constructor	Description
`TrajectoryIterator_dPtr()`	Default constructor yielding a NULL-pointer.
`TrajectoryIterator_dPtr(long cPtr, boolean cMemoryOwn)`
`TrajectoryIterator_dPtr(TrajectoryIterator_d ptr)`	Do not take ownership of ptr. ptr can be null. The constructor is implicit on purpose.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`TrajectoryIterator_d`	`__ref__()`	Dereferencing operator.
`void`	`addAssign(double dt)`	This function can be used to increase the iterator position. The position can be increased no longer than the length of the complete trajectory.
`TrajectoryIterator_dCPtr`	`cptr()`
`double`	`ddx()`	Extracts a point of the double derivative of the trajectory at the current position in the trajectory
`void`	`dec()`	Method for decreasing the position of the iterator a fixed amount The decrement is equal to the dt specified in the constructor.
`void`	`dec(double dt)`	Method for decreasing the position of the iterator a fixed amount
`void`	`delete()`
`TrajectoryIterator_d`	`deref()`	The pointer stored in the object.
`double`	`dx()`	Extracts a point of the derivative of the trajectory at the current position in the trajectory
`boolean`	`equals(TrajectoryIterator_d p)`
`static long`	`getCPtr(TrajectoryIterator_dPtr obj)`
`TrajectoryIterator_d`	`getDeref()`	Member access operator.
`double`	`getTime()`	Returns the current position (time) of the iterator
`void`	`inc()`	Method for increasing the position of the iterator a fixed amount The increment is equal to the dt specified in the constructor.
`void`	`inc(double dt)`	Method for increasing the position of the iterator by dt
`boolean`	`isBegin()`	Test if the beginning of the trajectory is reached.
`boolean`	`isEnd()`	Test if the end of the trajectory is reached.
`boolean`	`isNull()`	checks if the pointer is null
`boolean`	`isShared()`	check if this Ptr has shared ownership or none ownership
`TrajectoryIterator_d`	`next()`	Operator overloading ++ for increasing the position of the iterator. Usage: ++iterator The increment is equal to the dt specified in the constructor.
`void`	`next(int arg0)`	Operator overloading ++ for increasing the position of the iterator. Usage: iterator++ The increment is equal to the dt specified in the constructor.
`double`	`point()`	Extracts a point at the current position in the trajectory.
`TrajectoryIterator_d`	`prev()`	Operator overloading -- for decreasing the position of the iterator. Usage: --iterator; The decrement is equal to the dt specified in the constructor.
`void`	`prev(int arg0)`	Operator overloading -- for decreasing the position of the iterator. Usage: iterator--; The decrement is equal to the dt specified in the constructor.
`void`	`subtractAssign(double dt)`	This function can be used to decrease the iterator position. The position can be decreased no longer than to time equals 0.
`double`	`x()`	Extracts a point at the current position in the trajectory.

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

- Constructor Detail
  - TrajectoryIterator_dPtr
```
public TrajectoryIterator_dPtr(long cPtr,
                               boolean cMemoryOwn)
```
  - TrajectoryIterator_dPtr
```
public TrajectoryIterator_dPtr()
```
    Default constructor yielding a NULL-pointer.
  - TrajectoryIterator_dPtr
```
public TrajectoryIterator_dPtr(TrajectoryIterator_d ptr)
```
    Do not take ownership of ptr.
    
    ptr can be null.
    
    The constructor is implicit on purpose.
- Method Detail
  - getCPtr
```
public static long getCPtr(TrajectoryIterator_dPtr obj)
```
  - delete
```
public void delete()
```
  - deref
```
public TrajectoryIterator_d deref()
```
    The pointer stored in the object.
  - __ref__
```
public TrajectoryIterator_d __ref__()
```
    Dereferencing operator.
  - getDeref
```
public TrajectoryIterator_d getDeref()
```
    Member access operator.
  - equals
```
public boolean equals(TrajectoryIterator_d p)
```
  - isShared
```
public boolean isShared()
```
    check if this Ptr has shared ownership or none
    ownership
    
    Returns:
    
    true if Ptr has shared ownership, false if it has no ownership.
  - isNull
```
public boolean isNull()
```
    checks if the pointer is null
    
    Returns:
    
    Returns true if the pointer is null
  - cptr
```
public TrajectoryIterator_dCPtr cptr()
```
  - getTime
```
public double getTime()
```
    Returns the current position (time) of the iterator
    
    Returns:
    
    The current time.
  - inc
```
public void inc()
```
    Method for increasing the position of the iterator a fixed amount
    
    The increment is equal to the dt specified in the constructor.
  - inc
```
public void inc(double dt)
```
    Method for increasing the position of the iterator by dt
    
    Parameters:
    
    dt - [in] Amount to increase. A positive value is expected.
  - dec
```
public void dec()
```
    Method for decreasing the position of the iterator a fixed amount
    
    The decrement is equal to the dt specified in the constructor.
  - dec
```
public void dec(double dt)
```
    Method for decreasing the position of the iterator a fixed amount
    
    Parameters:
    
    dt - [in] Amount to decrease. A positive value is expected
  - subtractAssign
```
public void subtractAssign(double dt)
```
    This function can be used to decrease the iterator position.
    The position can be decreased no longer than to time equals 0.
    
    Parameters:
    
    dt - [in] a double that describes how much to decrease the
    iterator position
  - addAssign
```
public void addAssign(double dt)
```
    This function can be used to increase the iterator position.
    The position can be increased no longer than the length of the
    complete trajectory.
    
    Parameters:
    
    dt - [in] a double that describes how much to increase the
    iterator position
  - next
```
public TrajectoryIterator_d next()
```
    Operator overloading ++ for increasing the position of the iterator.
    
    Usage: ++iterator
    
    The increment is equal to the dt specified in the constructor.
    
    Returns:
    
    Reference to the TrajectoryIterator
  - next
```
public void next(int arg0)
```
    Operator overloading ++ for increasing the position of the iterator.
    
    Usage: iterator++
    
    The increment is equal to the dt specified in the constructor.
  - prev
```
public TrajectoryIterator_d prev()
```
    Operator overloading -- for decreasing the position of the iterator.
    
    Usage: --iterator;
    
    The decrement is equal to the dt specified in the constructor.
    
    Returns:
    
    Reference to the TrajectoryIterator
  - prev
```
public void prev(int arg0)
```
    Operator overloading -- for decreasing the position of the iterator.
    
    Usage: iterator--;
    
    The decrement is equal to the dt specified in the constructor.
  - isEnd
```
public boolean isEnd()
```
    Test if the end of the trajectory is reached.
    
    Returns:
    
    true if the iterator has reached the end of the trajectory false
    otherwise.
  - isBegin
```
public boolean isBegin()
```
    Test if the beginning of the trajectory is reached.
    
    Returns:
    
    true if the iterator has reached the beginning of the trajectory
    false otherwise.
  - point
```
public double point()
```
    Extracts a point at the current position in the trajectory.
    
    Returns:
    
    the point at the current position in the trajectory.
  - x
```
public double x()
```
    Extracts a point at the current position in the trajectory.
    
    Returns:
    
    the point at the current position in the trajectory.
  - dx
```
public double dx()
```
    Extracts a point of the derivative of the trajectory
    at the current position in the trajectory
    
    Returns:
    
    the derived point at the current position in the trajectory.
  - ddx
```
public double ddx()
```
    Extracts a point of the double derivative of the trajectory at the
    current position in the trajectory
    
    Returns:
    
    the double derived point at the current position in the trajectory.

Class TrajectoryIterator_dPtr

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

TrajectoryIterator_dPtr

TrajectoryIterator_dPtr

TrajectoryIterator_dPtr

Method Detail

getCPtr

delete

deref

__ref__

getDeref

equals

isShared

isNull

cptr

getTime

inc

inc

dec

dec

subtractAssign

addAssign

next

next

prev

prev

isEnd

isBegin

point

x

dx

ddx

ref