#include <ossimRLevelFilter.h>

Inheritance diagram for ossimRLevelFilter:

Public Member Functions
	ossimRLevelFilter ()
	default constructor More...

virtual void	getDecimationFactor (ossim_uint32 resLevel, ossimDpt &result) const
	Will return the decimation factor for the given resolution level. More...

ossimRefPtr< ossimImageGeometry >	getImageGeometry ()
	Returns a pointer reference to the active image geometry at this filter. More...

virtual void	setCurrentRLevel (ossim_uint32 rlevel)

virtual ossim_uint32	getCurrentRLevel () const

virtual bool	getOverrideGeometryFlag () const

virtual void	setOverrideGeometryFlag (bool override)

virtual ossimIrect	getBoundingRect (ossim_uint32 resLevel=0) const
	Returns the bounding rectangle. More...

virtual ossimRefPtr< ossimImageData >	getTile (const ossimIrect &tileRect, ossim_uint32 resLevel=0)

virtual bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)
	Method to the load (recreate) the state of an object from a keyword list. More...

virtual bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const
	Method to save the state of an object to a keyword list. More...

Public Member Functions inherited from ossimImageSourceFilter
	ossimImageSourceFilter (ossimObject *owner=NULL)

	ossimImageSourceFilter (ossimImageSource *inputSource)

	ossimImageSourceFilter (ossimObject owner, ossimImageSource inputSource)

virtual void	getOutputBandList (std::vector< ossim_uint32 > &bandList) const

virtual ossim_uint32	getNumberOfInputBands () const

virtual void	initialize ()

bool	canConnectMyInputTo (ossim_int32 inputIndex, const ossimConnectableObject *object) const
	required to be overriden by derived classes More...

virtual void	connectInputEvent (ossimConnectionEvent &event)

virtual void	disconnectInputEvent (ossimConnectionEvent &event)

virtual void	propertyEvent (ossimPropertyEvent &event)

virtual void	refreshEvent (ossimRefreshEvent &event)

virtual void	setProperty (ossimRefPtr< ossimProperty > property)

virtual ossimRefPtr< ossimProperty >	getProperty (const ossimString &name) const

virtual void	getPropertyNames (std::vector< ossimString > &propertyNames) const

Public Member Functions inherited from ossimImageSource
	ossimImageSource (ossimObject *owner=0)

	ossimImageSource (ossimObject *owner, ossim_uint32 inputListSize, ossim_uint32 outputListSize, bool inputListIsFixedFlag=true, bool outputListIsFixedFlag=true)

virtual	~ossimImageSource ()

virtual ossimRefPtr< ossimImageData >	getTile (const ossimIpt &origin, ossim_uint32 resLevel=0)

virtual bool	getTile (ossimImageData *result, ossim_uint32 resLevel=0)
	Method to get a tile. More...

virtual ossimObject *	getObject ()
	For RTTI support. More...

virtual const ossimObject *	getObject () const
	For RTTI support. More...

virtual void	getDecimationFactors (std::vector< ossimDpt > &decimations) const
	Will return an array of all decimations for each resolution level. More...

virtual ossim_uint32	getNumberOfDecimationLevels () const
	Will return the number of resolution levels. More...

virtual ossim_uint32	getNumberOfOutputBands () const
	Returns the number of bands in a tile returned from this TileSource. More...

virtual ossimScalarType	getOutputScalarType () const
	This will be used to query the output pixel type of the tile source. More...

virtual ossim_uint32	getTileWidth () const
	Returns the default processing tile width. More...

virtual ossim_uint32	getTileHeight () const
	Returns the default processing tile height. More...

virtual double	getNullPixelValue (ossim_uint32 band=0) const
	Each band has a null pixel associated with it. More...

virtual double	getMinPixelValue (ossim_uint32 band=0) const
	Returns the min pixel of the band. More...

virtual double	getMaxPixelValue (ossim_uint32 band=0) const
	Returns the max pixel of the band. More...

virtual void	getBoundingRect (ossimIrect &rect, ossim_uint32 resLevel=0) const
	Gets the bounding rectangle of the source. More...

virtual void	getValidImageVertices (std::vector< ossimIpt > &validVertices, ossimVertexOrdering ordering=OSSIM_CLOCKWISE_ORDER, ossim_uint32 resLevel=0) const
	ordering specifies how the vertices should be arranged. More...

virtual void	setImageGeometry (const ossimImageGeometry *geom)
	Default implementation sets geometry of the first input to the geometry specified. More...

virtual void	saveImageGeometry () const
	Default method to call input's saveImageGeometry. More...

virtual void	saveImageGeometry (const ossimFilename &geometry_file) const
	Default method to call input's saveImageGeometry. More...

virtual bool	isIndexedData () const

Public Member Functions inherited from ossimSource
	ossimSource (ossimObject *owner=0)

	ossimSource (ossimObject *owner, ossim_uint32 inputListSize, ossim_uint32 outputListSize, bool inputListIsFixedFlag=true, bool outputListIsFixedFlag=true)

virtual	~ossimSource ()

virtual bool	isSourceEnabled () const

virtual void	enableSource ()

virtual void	disableSource ()

virtual bool	getEnableFlag () const

virtual void	setEnableFlag (bool flag)

virtual bool	isInitialized () const

virtual void	setInitializedFlag (bool flag)

virtual std::ostream &	print (std::ostream &out) const
	Outputs theErrorStatus as an ossimErrorCode and an ossimString. More...

Public Member Functions inherited from ossimConnectableObject
	ossimConnectableObject (ossimObject *owner=0)
	Base constructor of this object. More...

	ossimConnectableObject (ossimObject *owner, ossim_int32 inputListSize, ossim_int32 outputListSize, bool inputListIsFixedFlag=true, bool outputListIsFixedFlag=true)

virtual	~ossimConnectableObject ()

void	setId (const ossimId &id)
	All connectable objects will have id's. More...

const ossimId &	getId () const
	Will allow us to get this object's id. More...

const ossimObject *	getOwner () const
	Fetches the current owner, most likely a container but not limited to one. More...

virtual void	changeOwner (ossimObject *owner)
	Permits changing the object's owner. More...

virtual void	setDescription (const ossimString &description)

virtual ossimString	getDescription () const

virtual bool	isConnected (ossimConnectableObjectDirectionType direction=CONNECTABLE_DIRECTION_INPUT) const
	will check the direction specified to see if all slots are full. More...

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findConnectableObject(const ossimId &id))

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findObjectOfType(RTTItypeid typeId, ossimConnectableObjectDirectionType directionType, bool recurse=true))

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findObjectOfType(const ossimString &obj, ossimConnectableObjectDirectionType directionType, bool recurse=true))

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findInputObjectOfType(const ossimString &className))

virtual ossim_int32	findInputIndex (const ossimConnectableObject *object)
	Return a valid index of the input list if the passed in object is found else return -1. More...

virtual ossim_int32	findInputIndex (const ossimId &id)
	Return a valid index of the input list if the passed id is found else return -1. More...

virtual ossim_int32	findOutputIndex (const ossimConnectableObject *object)
	Return a valid index of the output list if the passed in object is found else return -1. More...

virtual ossim_int32	findOutputIndex (const ossimId &id)
	Return a valid index of the output list if the passed in object is found else return -1. More...

virtual ossim_int32	getMyInputIndexToConnectTo (ossimConnectableObject *object) const
	Should return the first available index to connect to. More...

virtual ossim_int32	getMyOutputIndexToConnectTo (ossimConnectableObject *object) const
	Should return the first available index to connect to. More...

virtual bool	canConnectMyOutputTo (ossim_int32 myOutputIndex, const ossimConnectableObject *object) const
	default implementation is to allow anyone to connect to us. More...

virtual void	disconnect (ossimConnectableObject *object=0)
	Will disconnect the object passed in. More...

virtual void	disconnect (const ossimId &id)
	Will disconnect the object passed in. More...

virtual ossimRefPtr< ossimConnectableObject >	disconnectMyInput (ossim_int32 inputIndex, bool disconnectOutputFlag=true, bool createEventFlag=true)
	Will disconnect the object at the given input index and generate a connection event. More...

virtual void	disconnectMyInput (ossimConnectableObject *input, bool disconnectOutputFlag=true, bool createEventFlag=true)
	Finds the index of the passed in input and calls disconnectMyInput(inputIndex, disconnectOutputFlag, createEventFlag);. More...

virtual void	disconnectMyInputs (ConnectableObjectList &inputList, bool disconnectOutputFlag=true, bool createEventFlag=true)

virtual ossimRefPtr< ossimConnectableObject >	disconnectMyOutput (ossim_int32 outputIndex, bool disconnectInputFlag=true, bool createEventFlag=true)
	Will disconnect the object at the given output index and generate a connection event. More...

virtual void	disconnectMyOutput (ossimConnectableObject *output, bool disconnectInputFlag=true, bool createEventFlag=true)
	Will disconnect the output object. More...

virtual void	disconnectMyOutputs (ConnectableObjectList &outputList, bool disconnectOutputFlag=true, bool createEventFlag=true)

virtual void	disconnectAllInputs ()
	Will disconnect all of the input objects. More...

virtual void	disconnectAllOutputs ()
	Will disconnect all of the output objects. More...

virtual ossim_int32	connectMyInputTo (ossimConnectableObject *inputObject, bool makeOutputConnection=true, bool createEventFlag=true)
	Will try to connect this objects input to the passed in object. More...

virtual ossim_int32	connectMyInputTo (ossim_int32 inputIndex, ossimConnectableObject *inputObject, bool makeOutputConnection=true, bool createEventFlag=true)
	Will connect the specified input to the passed in object. More...

virtual bool	connectMyInputTo (ConnectableObjectList &inputList, bool makeOutputConnection=true, bool createEventFlag=true)

virtual ossim_int32	connectMyOutputTo (ossimConnectableObject *outputObject, bool makeInputConnection=true, bool createEventFlag=true)
	Will try to connect this objects output to the passed in object. More...

virtual bool	connectMyOutputTo (ConnectableObjectList &outputList, bool makeInputConnection=true, bool createEventFlag=true)

virtual bool	connectInputList (ConnectableObjectList &inputList)
	Will disconnect itself from all inputs and reset to the passed in input list. More...

virtual bool	connectOutputList (ConnectableObjectList &outputList)
	Will disconnect itself from all outputs and reset to the passed in output list. More...

virtual ossim_uint32	getNumberOfInputs () const
	Returns the number of input objects. More...

virtual ossim_uint32	getNumberOfOutputs () const
	Return the number of output objects. More...

ossimConnectableObject *	getInput (ossim_uint32 index=0)
	returns the object at the specified index. More...

const ossimConnectableObject *	getInput (ossim_uint32 index=0) const
	returns the object at the specified index. More...

ossimConnectableObject *	getOutput (ossim_uint32 index=0)
	returns the object at the specified index. More...

const ossimConnectableObject *	getOutput (ossim_uint32 index=0) const
	returns the object at the specified index. More...

virtual void	setNumberOfInputs (ossim_int32 numberOfInputs)
	Will set the number of inputs. More...

virtual bool	getInputListIsFixedFlag () const

virtual bool	getOutputListIsFixedFlag () const

virtual void	setNumberOfOutputs (ossim_int32 numberOfInputs)
	Will set the number of outputs. More...

const ConnectableObjectList &	getInputList () const

const ConnectableObjectList &	getOutputList () const

ConnectableObjectList &	getInputList ()

ConnectableObjectList &	getOutputList ()

	OSSIM_DEPRECATE_METHOD (virtual void findAllObjectsOfType(ConnectableObjectList &result, const RTTItypeid &typeInfo, bool recurse=true))

	OSSIM_DEPRECATE_METHOD (virtual void findAllObjectsOfType(ConnectableObjectList &result, const ossimString &className, bool recurse=true))

virtual void	propagateEventToOutputs (ossimEvent &event)

virtual void	propagateEventToInputs (ossimEvent &event)

virtual void	setProperty (const ossimString &name, const ossimString &value)

virtual ossim_uint32	saveStateOfAllInputs (ossimKeywordlist &kwl, bool saveThisStateFlag=true, ossim_uint32 objectIndex=1, const char *prefix=0) const
	Save the state of all inputs to a keyword list. More...

virtual bool	fillContainer (ossimConnectableContainer &container)
	Inserts this object and all of its children and inputs into the container provided. More...

bool	moveInputUp (const ossimId &id)
	Moves the input connection matching id up one in the connection list. More...

bool	moveInputDown (const ossimId &id)
	Moves the input connection matching id down one in the connection list. More...

bool	moveInputToTop (const ossimId &id)
	Moves the input connection matching id to the top of the connection list. More...

bool	moveInputToBottom (const ossimId &id)
	Moves the input connection matching id to the bottom of the connection list. More...

virtual void	accept (ossimVisitor &visitor)
	We will add a visitor interface for all connectable objects. More...

Public Member Functions inherited from ossimObject
	ossimObject ()

virtual	~ossimObject ()

virtual ossimObject *	dup () const

virtual ossimString	getShortName () const

virtual ossimString	getLongName () const

virtual ossimString	getClassName () const

virtual RTTItypeid	getType () const

virtual bool	canCastTo (ossimObject *obj) const

virtual bool	canCastTo (const RTTItypeid &id) const

virtual bool	canCastTo (const ossimString &parentClassName) const

virtual bool	isEqualTo (const ossimObject &obj, ossimCompareType compareType=OSSIM_COMPARE_FULL) const

Public Member Functions inherited from ossimReferenced
	ossimReferenced ()

	ossimReferenced (const ossimReferenced &)

ossimReferenced &	operator= (const ossimReferenced &)

void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...

void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

int	referenceCount () const

Public Member Functions inherited from ossimListenerManager
	ossimListenerManager ()

virtual	~ossimListenerManager ()

virtual void	fireEvent (ossimEvent &event)

virtual bool	addListener (ossimListener *listener)

virtual bool	removeListener (ossimListener *listener)

virtual bool	findListener (ossimListener *listener)

Public Member Functions inherited from ossimPropertyInterface
	ossimPropertyInterface ()

virtual	~ossimPropertyInterface ()

virtual ossimString	getPropertyValueAsString (const ossimString &name) const

void	getPropertyList (std::vector< ossimRefPtr< ossimProperty > > &propertyList) const

void	setProperties (std::vector< ossimRefPtr< ossimProperty > > &propertyList)

Public Member Functions inherited from ossimErrorStatusInterface
	ossimErrorStatusInterface ()

virtual	~ossimErrorStatusInterface ()

virtual ossimErrorCode	getErrorStatus () const

virtual ossimString	getErrorStatusString () const

virtual void	setErrorStatus (ossimErrorCode error_status) const

virtual void	setErrorStatus () const

virtual void	clearErrorStatus () const

bool	hasError () const

Public Member Functions inherited from ossimConnectableObjectListener
	ossimConnectableObjectListener ()

virtual	~ossimConnectableObjectListener ()

virtual void	processEvent (ossimEvent &event)
	ProcessEvent. More...

virtual void	objectDestructingEvent (ossimObjectDestructingEvent &)

virtual void	connectionEvent (ossimConnectionEvent &)

virtual void	disconnectOutputEvent (ossimConnectionEvent &)

virtual void	connectOutputEvent (ossimConnectionEvent &)

virtual void	addObjectEvent (ossimContainerEvent &)

virtual void	removeObjectEvent (ossimContainerEvent &)

virtual void	containerEvent (ossimContainerEvent &)

Public Member Functions inherited from ossimListener
	ossimListener ()

virtual	~ossimListener ()

void	enableListener ()

void	disableListener ()

void	setListenerEnableFlag (bool flag)

bool	isListenerEnabled () const

bool	getListenerEnableFlag () const

Protected Member Functions
virtual	~ossimRLevelFilter ()
	virtual destructor. More...

void	getSummedDecimation (ossimDpt &result) const

void	updateGeometry ()
	If this object is maintaining an ossimImageGeometry, this method needs to be called after a scale change so that the geometry's projection is modified accordingly. More...

Protected Member Functions inherited from ossimImageSourceFilter
virtual	~ossimImageSourceFilter ()

Protected Member Functions inherited from ossimImageSource
	ossimImageSource (const ossimImageSource &rhs)

const ossimImageSource &	operator= (const ossimImageSource &)

Protected Member Functions inherited from ossimSource
	ossimSource (const ossimSource &rhs)

const ossimSource &	operator= (const ossimSource &rhs)

Protected Member Functions inherited from ossimConnectableObject
ossimConnectableObject *	findObjectOfType (ConnectableObjectList *connectableList, ossimVisitor &visitor)

Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Protected Member Functions inherited from ossimListenerManager
	ossimListenerManager (const ossimListenerManager &rhs)

Protected Attributes
ossim_uint32	theCurrentRLevel

bool	theOverrideGeometryFlag

ossimRefPtr< ossimImageGeometry >	m_ScaledGeometry
	The input image geometry, altered by the scale. More...

Protected Attributes inherited from ossimImageSourceFilter
ossimImageSource *	theInputConnection

Protected Attributes inherited from ossimSource
bool	theEnableFlag

bool	theInitializedFlag

Protected Attributes inherited from ossimConnectableObject
ossimId	theId

ossimString	theDescription

ossimObject *	theOwner

bool	theInputListIsFixedFlag
	Indicates whether the theInputObjectList is fixed. More...

bool	theOutputListIsFixedFlag
	Indicates whether the theOutputObjectList is fixed. More...

ConnectableObjectList	theInputObjectList
	Holds a list of input objects. More...

ConnectableObjectList	theOutputObjectList
	Holds a list of output objects. More...

Protected Attributes inherited from ossimListenerManager
std::list< ossimListener * >	theListenerList

bool	theEnabledFlag

std::list< ossimListener * >	theDelayedAdd

std::list< ossimListener * >	theDelayedRemove

bool	theFireEventFlag

Protected Attributes inherited from ossimErrorStatusInterface
ossimErrorCode	theErrorStatus

Protected Attributes inherited from ossimListener
bool	theListenerEnableFlag

Additional Inherited Members
Public Types inherited from ossimConnectableObject
enum	ossimConnectableObjectDirectionType { CONNECTABLE_DIRECTION_NONE = 0, CONNECTABLE_DIRECTION_INPUT = 1, CONNECTABLE_DIRECTION_OUTPUT = 2 }

typedef std::vector< ossimRefPtr< ossimConnectableObject > >	ConnectableObjectList

Detailed Description

This filter is used to adjust the RLevel. If you would like to continually change between RLevels or Reslolutions then you can use this filter to do so. You can also specify whether or not the rLevel passed in from the getTile request is added to this classes current Rlevel. This is so if you concatenate multiple filters that reduce the RLevels then it will keep reducing. For example if I have 2 filters that both go to RLevel 1 then it actually will go to 2 since there are 2 decimations happening. This can be turned off by specifying the Rlevel not to be additive.

Definition at line 27 of file ossimRLevelFilter.h.

Constructor & Destructor Documentation

◆ ossimRLevelFilter()

ossimRLevelFilter::ossimRLevelFilter ( )

default constructor

Definition at line 27 of file ossimRLevelFilter.cpp.

    : ossimImageSourceFilter(),
      theCurrentRLevel(0),
      theOverrideGeometryFlag(false)
 {
 }

◆ ~ossimRLevelFilter()

ossimRLevelFilter::~ossimRLevelFilter ( )

protectedvirtual

virtual destructor.

Definition at line 35 of file ossimRLevelFilter.cpp.

36 {

37 }

Member Function Documentation

◆ getBoundingRect()

ossimIrect ossimRLevelFilter::getBoundingRect ( ossim_uint32 resLevel = 0 ) const

virtual

Returns the bounding rectangle.

Parameters

resLevel This argument is only passed onto the input connection if this filter is disabled.

See also: disableSource().

To get the bounding rectangle of an rlevel when source is enabled do: myRLevelFilter->setCurrentRLevel(level); myRLevelFilter->getBoundingRect();

Returns: Rectangle of the current rlevel if enabled; else, the rectangle of the input connection for resLevel.

Reimplemented from ossimImageSource.

Definition at line 168 of file ossimRLevelFilter.cpp.

References ossimImageSource::getBoundingRect(), ossimSource::isSourceEnabled(), ossimIrect::makeNan(), theCurrentRLevel, and ossimImageSourceFilter::theInputConnection.

 {
    ossimIrect rect;
    rect.makeNan();
    if(!theInputConnection) return rect;
 
    if (isSourceEnabled())
    {
       return theInputConnection->getBoundingRect(theCurrentRLevel);
    }
    return theInputConnection->getBoundingRect(resLevel);
 }

◆ getCurrentRLevel()

ossim_uint32 ossimRLevelFilter::getCurrentRLevel ( ) const

virtual

Definition at line 72 of file ossimRLevelFilter.cpp.

References theCurrentRLevel.

Referenced by getImageGeometry(), and getSummedDecimation().

 {
    return theCurrentRLevel;
 }

◆ getDecimationFactor()

void ossimRLevelFilter::getDecimationFactor	(	ossim_uint32	resLevel,
		ossimDpt &	result
	)		const

virtual

Will return the decimation factor for the given resolution level.

the decimation is the scale from Resolution 0 or full res. Usually this is a power of 2 decimation where the decimation result is 1.0/2^resoltion.

Reimplemented from ossimImageSource.

Definition at line 40 of file ossimRLevelFilter.cpp.

References ossimImageSource::getDecimationFactor(), ossimDpt::makeNan(), and ossimImageSourceFilter::theInputConnection.

Referenced by getSummedDecimation(), and updateGeometry().

 {
    if(!theInputConnection)
    {
       result.makeNan();
    }
 
    theInputConnection->getDecimationFactor(resLevel,
                                            result);
 }

◆ getImageGeometry()

ossimRefPtr< ossimImageGeometry > ossimRLevelFilter::getImageGeometry ( )

virtual

Returns a pointer reference to the active image geometry at this filter.

The input source geometry is modified, so we need to maintain our own geometry object as a data member.

Reimplemented from ossimImageSource.

Definition at line 81 of file ossimRLevelFilter.cpp.

References getCurrentRLevel(), ossimSource::getEnableFlag(), ossimImageSource::getImageGeometry(), m_ScaledGeometry, ossimImageSourceFilter::theInputConnection, updateGeometry(), and ossimRefPtr< T >::valid().

 {
    // Have we already defined our own geometry? Return it if so:
    if (m_ScaledGeometry.valid()) return m_ScaledGeometry;
 
    if (!theInputConnection) return ossimRefPtr<ossimImageGeometry>();
 
    ossim_uint32 rlevel = getCurrentRLevel();
    ossimRefPtr<ossimImageGeometry> inputGeom = theInputConnection->getImageGeometry();
 
    // If no scaling is happening, just return the input image geometry:
    if ((!inputGeom) || (rlevel == 0) || (getEnableFlag() == false))
       return inputGeom;
 
    // Need to create a copy of the input geom and modify it as our own, then pass that:
    m_ScaledGeometry = new ossimImageGeometry(*inputGeom);
    updateGeometry();
 
    // Return our version of the image geometry:
    return m_ScaledGeometry;
 }

◆ getOverrideGeometryFlag()

bool ossimRLevelFilter::getOverrideGeometryFlag ( ) const

virtual

Get/set of the data member "theOverrideGeometryFlag". If set this will override the "getImageGeometry" method and adjust the getMetersPerPixel or the getDecimalDegreesPerPixel. Default behavior is to not override method.

Definition at line 53 of file ossimRLevelFilter.cpp.

References theOverrideGeometryFlag.

 {
    return theOverrideGeometryFlag;
 }

◆ getSummedDecimation()

void ossimRLevelFilter::getSummedDecimation ( ossimDpt & result ) const

protected

Initializes result with the sum of decimations from rlevel one to theCurrentRLevel.

Definition at line 128 of file ossimRLevelFilter.cpp.

References getCurrentRLevel(), getDecimationFactor(), ossimDpt::hasNans(), ossimDpt::makeNan(), ossimNotify(), ossimNotifyLevel_WARN, ossimDpt::x, and ossimDpt::y.

 {
    // Start with fresh values.
    result.x = 0.0;
    result.y = 0.0;
 
    ossim_uint32 rlevel = getCurrentRLevel();
 
    if (rlevel == 0)
    {
       return; // no decimation.
    }
 
    // Sum the decimations from rlevel one to the current rlevel.
    for (ossim_uint32 i = 1; i <= rlevel; ++i)
    {
       ossimDpt dpt;
       getDecimationFactor(i, dpt);
       if (dpt.hasNans())
       {
          ossimNotify(ossimNotifyLevel_WARN)
             << "ossimRLevelFilter::getSummedDecimation WARNING:"
             << "\nNans returned from getDecimationFactor!"
             << std::endl;
          result.makeNan();
          return;
       }
       result.x += dpt.x;
       result.y += dpt.y;
    }
 
    if (traceDebug())
    {
       ossimNotify(ossimNotifyLevel_DEBUG)
          << "ossimRLevelFilter::getSummedDecimation result: " << result
          << std::endl;
    }
 }

◆ getTile()

ossimRefPtr< ossimImageData > ossimRLevelFilter::getTile	(	const ossimIrect &	rect,
		ossim_uint32	resLevel = `0`
	)

virtual

Returns: the requested region of interest

Reimplemented from ossimImageSource.

Definition at line 182 of file ossimRLevelFilter.cpp.

References ossimImageSource::getTile(), ossimSource::isSourceEnabled(), theCurrentRLevel, and ossimImageSourceFilter::theInputConnection.

 {
    if(!theInputConnection)
    {
       return 0;
    }
 
    if(!isSourceEnabled())
    {
       return theInputConnection->getTile(tileRect, resLevel);
    }
 
    // Ignoring resLevel as we're in charge of it here!
    return theInputConnection->getTile(tileRect, theCurrentRLevel);
 }

◆ loadState()

bool ossimRLevelFilter::loadState	(	const ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)

virtual

Method to the load (recreate) the state of an object from a keyword list.

Return true if ok or false on error.

Reimplemented from ossimImageSourceFilter.

Definition at line 201 of file ossimRLevelFilter.cpp.

References ossimKeywordlist::find().

 {
    const char* current  = kwl.find(prefix, CURRENT_RLEVEL_KW);
    const char* override = kwl.find(prefix, OVERRIDE_GEOMETRY_KW);
 
    if(current)
       theCurrentRLevel = ossimString(current).toULong();
 
    if(override)
       theOverrideGeometryFlag = ossimString(override).toBool();
 
    return ossimImageSourceFilter::loadState(kwl, prefix);
 
    // An existing image geometry object here will need to be updated:
    updateGeometry();
 }

◆ saveState()

bool ossimRLevelFilter::saveState	(	ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)		const

virtual

Method to save the state of an object to a keyword list.

Return true if ok or false on error.

Reimplemented from ossimImageSourceFilter.

Definition at line 220 of file ossimRLevelFilter.cpp.

References ossimKeywordlist::add().

 {
    kwl.add(prefix,
            CURRENT_RLEVEL_KW,
            theCurrentRLevel,
            true);
 
    kwl.add(prefix,
            OVERRIDE_GEOMETRY_KW,
            (ossim_uint32)theOverrideGeometryFlag,
            true);
 
    return ossimImageSourceFilter::saveState(kwl, prefix);
 }

◆ setCurrentRLevel()

void ossimRLevelFilter::setCurrentRLevel ( ossim_uint32 rlevel )

virtual

Definition at line 65 of file ossimRLevelFilter.cpp.

References theCurrentRLevel, and updateGeometry().

 {
    theCurrentRLevel = rlevel;
    updateGeometry();
 }

◆ setOverrideGeometryFlag()

void ossimRLevelFilter::setOverrideGeometryFlag ( bool override )

virtual

Definition at line 59 of file ossimRLevelFilter.cpp.

References theOverrideGeometryFlag.

 {
    theOverrideGeometryFlag = override;
 }

◆ updateGeometry()

void ossimRLevelFilter::updateGeometry ( )

protected

If this object is maintaining an ossimImageGeometry, this method needs to be called after a scale change so that the geometry's projection is modified accordingly.

Definition at line 107 of file ossimRLevelFilter.cpp.

References ossimMapProjection::applyScale(), getDecimationFactor(), ossimImageGeometry::getProjection(), m_ScaledGeometry, PTR_CAST, theCurrentRLevel, ossimRefPtr< T >::valid(), ossimDpt::x, and ossimDpt::y.

Referenced by getImageGeometry(), and setCurrentRLevel().

 {
    if (m_ScaledGeometry.valid())
    {
       // Modify the image geometry's projection with the scale factor before returning geom:
       ossimProjection* proj = m_ScaledGeometry->getProjection();
       ossimMapProjection* mapProj = PTR_CAST(ossimMapProjection, proj);;
       if(mapProj)
       {
          ossimDpt decimation;
          getDecimationFactor(theCurrentRLevel, decimation);
          decimation.x = 1.0/decimation.x;
          decimation.y = 1.0/decimation.y;
 
          // This will adjust both the scale and the tie point to account for decimation.
          mapProj->applyScale(decimation, true);  // recenter tie point flag
       }
    }
 }

Member Data Documentation

◆ m_ScaledGeometry

ossimRefPtr<ossimImageGeometry> ossimRLevelFilter::m_ScaledGeometry

protected

The input image geometry, altered by the scale.

Definition at line 94 of file ossimRLevelFilter.h.

Referenced by getImageGeometry(), and updateGeometry().

◆ theCurrentRLevel

ossim_uint32 ossimRLevelFilter::theCurrentRLevel

protected

Definition at line 92 of file ossimRLevelFilter.h.

Referenced by getBoundingRect(), getCurrentRLevel(), getTile(), setCurrentRLevel(), and updateGeometry().

◆ theOverrideGeometryFlag

bool ossimRLevelFilter::theOverrideGeometryFlag

protected

Definition at line 93 of file ossimRLevelFilter.h.

Referenced by getOverrideGeometryFlag(), and setOverrideGeometryFlag().

The documentation for this class was generated from the following files:

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ossimRLevelFilter()

◆ ~ossimRLevelFilter()

Member Function Documentation

◆ getBoundingRect()

◆ getCurrentRLevel()

◆ getDecimationFactor()

◆ getImageGeometry()

◆ getOverrideGeometryFlag()

◆ getSummedDecimation()

◆ getTile()

◆ loadState()

◆ saveState()

◆ setCurrentRLevel()

◆ setOverrideGeometryFlag()

◆ updateGeometry()

Member Data Documentation

◆ m_ScaledGeometry

◆ theCurrentRLevel

◆ theOverrideGeometryFlag