java.lang.Object
- org.robwork.sdurw.QSamplerPtr

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

Constructor Summary

Constructors
Constructor	Description
`QSamplerPtr()`	Default constructor yielding a NULL-pointer.
`QSamplerPtr(long cPtr, boolean cMemoryOwn)`
`QSamplerPtr(QSampler 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
`QSampler`	`__ref__()`	Dereferencing operator.
`QSamplerCPtr`	`cptr()`
`void`	`delete()`
`QSampler`	`deref()`	The pointer stored in the object.
`boolean`	`empty()`	True if the sampler is known to contain no more configurations.
`boolean`	`equals(QSampler p)`
`static long`	`getCPtr(QSamplerPtr obj)`
`QSampler`	`getDeref()`	Member access operator.
`boolean`	`isNull()`	checks if the pointer is null
`boolean`	`isShared()`	check if this Ptr has shared ownership or none ownership
`QSamplerPtr`	`makeConstrained(QSamplerPtr sampler, QConstraintCPtr constraint)`	Map a sampler of standard configurations into a sampler of normalized configurations. A sampler of IK solutions for a specific target.
`QSamplerPtr`	`makeConstrained(QSamplerPtr sampler, QConstraintCPtr constraint, int maxAttempts)`	Map a sampler of standard configurations into a sampler of normalized configurations. A sampler of IK solutions for a specific target.
`QSamplerPtr`	`makeEmpty()`	Empty sampler.
`QSamplerPtr`	`makeFinite(QSamplerPtr sampler, int cnt)`	A sampler to that returns only the first cnt samples from another sampler. The sampler is considered empty as soon as sampler is empty or the sampler has been called cnt times or more.
`QSamplerPtr`	`makeFinite(VectorQ qs)`	Sampler for the values of a finite sequence. sample() returns each of the values of qs in order.
`QSamplerPtr`	`makeFixed(Q q)`	Sampler that always returns the same configuration. The sampler is considered never empty (empty() always returns false).
`QSamplerPtr`	`makeSingle(Q q)`	Sampler that always returns a single configuration. The sample() returns q the first time the method is called and the empty configuration otherwise.
`QSamplerPtr`	`makeUniform(Device device)`	Uniform random sampling for a box of the configuration space. Uniform random sampling for a device.
`QSamplerPtr`	`makeUniform(DeviceCPtr device)`	Uniform random sampling for a device.
`Q`	`sample()`	Sample a configuration. If sampling fails, the sampler may return the empty configuration.

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

- Constructor Detail
  - QSamplerPtr
```
public QSamplerPtr(long cPtr,
                   boolean cMemoryOwn)
```
  - QSamplerPtr
```
public QSamplerPtr()
```
    Default constructor yielding a NULL-pointer.
  - QSamplerPtr
```
public QSamplerPtr(QSampler ptr)
```
    Do not take ownership of ptr.
    
    ptr can be null.
    
    The constructor is implicit on purpose.
- Method Detail
  - getCPtr
```
public static long getCPtr(QSamplerPtr obj)
```
  - delete
```
public void delete()
```
  - deref
```
public QSampler deref()
```
    The pointer stored in the object.
  - __ref__
```
public QSampler __ref__()
```
    Dereferencing operator.
  - getDeref
```
public QSampler getDeref()
```
    Member access operator.
  - equals
```
public boolean equals(QSampler 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 QSamplerCPtr cptr()
```
  - sample
```
public Q sample()
```
    Sample a configuration.
    
    If sampling fails, the sampler may return the empty configuration. If
    empty() is true then the sampler has no more configurations.
    Otherwise sample() may (or may not) succeed if called a second time.
  - empty
```
public boolean empty()
```
    True if the sampler is known to contain no more
    configurations.
  - makeEmpty
```
public QSamplerPtr makeEmpty()
```
    Empty sampler.
  - makeFixed
```
public QSamplerPtr makeFixed(Q q)
```
    Sampler that always returns the same configuration.
    
    The sampler is considered never empty (empty() always returns false).
  - makeSingle
```
public QSamplerPtr makeSingle(Q q)
```
    Sampler that always returns a single configuration.
    
    The sample() returns q the first time the method is called and the
    empty configuration otherwise. empty() returns true after the first
    call of sample().
  - makeFinite
```
public QSamplerPtr makeFinite(VectorQ qs)
```
    Sampler for the values of a finite sequence.
    
    sample() returns each of the values of qs in order. When all of
    these samples have been returned, empty() returns true and sample()
    returns the empty configuration.
  - makeFinite
```
public QSamplerPtr makeFinite(QSamplerPtr sampler,
                              int cnt)
```
    A sampler to that returns only the first cnt samples from
    another sampler.
    
    The sampler is considered empty as soon as sampler is empty or the
    sampler has been called cnt times or more.
  - makeUniform
```
public QSamplerPtr makeUniform(Device device)
```
    Uniform random sampling for a box of the configuration space.
    
    Uniform random sampling for a device.
  - makeUniform
```
public QSamplerPtr makeUniform(DeviceCPtr device)
```
    Uniform random sampling for a device.
  - makeConstrained
```
public QSamplerPtr makeConstrained(QSamplerPtr sampler,
                                   QConstraintCPtr constraint,
                                   int maxAttempts)
```
    Map a sampler of standard configurations into a sampler of
    normalized configurations.
    
    A sampler of IK solutions for a specific target.
    
    Parameters:
    
    sampler - [in] Sampler of IK solutions for target.
    
    A sampler filtered by a constraint.
    
    For each call of sample() up to maxAttempts configurations are
    extracted from sampler and checked by constraint. The first
    sample that satisfies the constraint is returned; if no such were
    found the empty configuration is returned.
    
    If maxAttempts is negative (this is the default), then sampler
    is sampled forever until either the sampler is empty or a
    configuration satisfying constraint is found.
  - makeConstrained
```
public QSamplerPtr makeConstrained(QSamplerPtr sampler,
                                   QConstraintCPtr constraint)
```
    Map a sampler of standard configurations into a sampler of
    normalized configurations.
    
    A sampler of IK solutions for a specific target.
    
    Parameters:
    
    sampler - [in] Sampler of IK solutions for target.
    
    A sampler filtered by a constraint.
    
    For each call of sample() up to maxAttempts configurations are
    extracted from sampler and checked by constraint. The first
    sample that satisfies the constraint is returned; if no such were
    found the empty configuration is returned.
    
    If maxAttempts is negative (this is the default), then sampler
    is sampled forever until either the sampler is empty or a
    configuration satisfying constraint is found.

Class QSamplerPtr

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

QSamplerPtr

QSamplerPtr

QSamplerPtr

Method Detail

getCPtr

delete

deref

__ref__

getDeref

equals

isShared

isNull

cptr

sample

empty

makeEmpty

makeFixed

makeSingle

makeFinite

makeFinite

makeUniform

makeUniform

makeConstrained

makeConstrained

ref