ossimPolyArea2d Class Reference

#include <ossimPolyArea2d.h>

Inheritance diagram for ossimPolyArea2d:

Public Member Functions
	ossimPolyArea2d ()
	ossimPolyArea2d (const vector< ossimGpt > &polygon)
	ossimPolyArea2d (const vector< ossimDpt > &polygon)
	ossimPolyArea2d (const ossimPolygon &shell, const vector< ossimPolygon > &holes)
	ossimPolyArea2d (const ossimDpt &p1, const ossimDpt &p2, const ossimDpt &p3, const ossimDpt &p4)
	ossimPolyArea2d (const ossimPolyArea2d &rhs)
	ossimPolyArea2d (const ossimIrect &rect)
	ossimPolyArea2d (const ossimDrect &rect)
	ossimPolyArea2d (const ossimPolygon &polygon)
	~ossimPolyArea2d ()
void	clear ()
const ossimPolyArea2d &	operator= (const ossimPolyArea2d &rhs)
const ossimPolyArea2d &	operator= (const ossimPolygon &rhs)
const ossimPolyArea2d &	operator= (const ossimIrect &rect)
const ossimPolyArea2d &	operator= (const ossimDrect &rect)
const ossimPolyArea2d &	operator= (const vector< ossimGpt > &polygon)
const ossimPolyArea2d &	operator= (const vector< ossimDpt > &polygon)
const ossimPolyArea2d &	operator&= (const ossimPolyArea2d &rhs)
ossimPolyArea2d	operator& (const ossimPolyArea2d &rhs) const
ossimPolyArea2d	operator+ (const ossimPolyArea2d &rhs) const
const ossimPolyArea2d &	operator+= (const ossimPolyArea2d &rhs)
ossimPolyArea2d	operator- (const ossimPolyArea2d &rhs) const
const ossimPolyArea2d &	operator-= (const ossimPolyArea2d &rhs)
bool	intersects (const ossimPolyArea2d &rhs) const
void	add (const ossimPolyArea2d &rhs)
bool	getVisiblePolygons (vector< ossimPolygon > &polyList) const
bool	getPolygonHoles (vector< ossimPolygon > &polyList) const
bool	getCompletePolygons (vector< ossimPolyArea2d > &polyList) const
	Gets all of the polygons stored with their holes embedded. More...
bool	isEmpty () const
bool	isValid (bool displayValidationError=false) const
bool	isPointWithin (const ossimDpt &point) const
bool	isPointWithin (double x, double y) const
void	getBoundingRect (ossimDrect &rect)
std::string	toString () const
	Returns the Well Known Text string. More...
ossimPolyArea2d	getBufferedShape (double distance=FLT_EPSILON) const
	Buffers the ossimPolyArea2d shape and returns a copy. More...
ossimPolyArea2d &	setToBufferedShape (double distance=FLT_EPSILON)
ossimPolyArea2d &	toMultiPolygon ()
bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const
bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)
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

Protected Member Functions
void	clearPolygons ()
void	recurseVisibleGeometries (ossimPolygon::Vector &polyList, const geos::geom::Geometry *geom) const
void	recurseHoles (ossimPolygon::Vector &polyList, const geos::geom::Geometry *geom) const
void	recurseCompleteGeometries (std::vector< ossimPolyArea2d > &polyList, const geos::geom::Geometry *geom) const
	Recurses over the Geometry object to load all complete polygons (a shell and any internal holes) into the ossimPolyArea2d. More...
Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Protected Attributes
OssimPolyArea2dPrivate *	m_privateData

Friends
class	OssimPolyArea2dPrivate
OSSIM_DLL std::ostream &	operator<< (std::ostream &out, const ossimPolyArea2d &data)

Detailed Description

Definition at line 31 of file ossimPolyArea2d.h.

Constructor & Destructor Documentation

ossimPolyArea2d() [1/9]

ossimPolyArea2d::ossimPolyArea2d

(

)

Definition at line 303 of file ossimPolyArea2d.cpp.

Referenced by recurseCompleteGeometries().

   :m_privateData(new OssimPolyArea2dPrivate)
{
}

ossimPolyArea2d() [2/9]

ossimPolyArea2d::ossimPolyArea2d

(

const vector< ossimGpt > &

polygon

)

Definition at line 308 of file ossimPolyArea2d.cpp.

   :m_privateData(new OssimPolyArea2dPrivate)
{
   (*this) = polygon;
}

ossimPolyArea2d() [3/9]

ossimPolyArea2d::ossimPolyArea2d

(

const vector< ossimDpt > &

polygon

)

Definition at line 314 of file ossimPolyArea2d.cpp.

   :m_privateData(new OssimPolyArea2dPrivate)
{
   (*this) = polygon;
}

ossimPolyArea2d() [4/9]

ossimPolyArea2d::ossimPolyArea2d	(	const ossimPolygon &	shell,
		const vector< ossimPolygon > &	holes
	)

Definition at line 338 of file ossimPolyArea2d.cpp.

References m_privateData, and OssimPolyArea2dPrivate::setGeometry().

   :m_privateData(new OssimPolyArea2dPrivate)
{   
    m_privateData->setGeometry(exteriorRing, interiorRings);
}

ossimPolyArea2d() [5/9]

ossimPolyArea2d::ossimPolyArea2d	(	const ossimDpt &	p1,
		const ossimDpt &	p2,
		const ossimDpt &	p3,
		const ossimDpt &	p4
	)

Definition at line 350 of file ossimPolyArea2d.cpp.

   :
   m_privateData(new OssimPolyArea2dPrivate)
{
   ossimPolygon temp(p1,p2,p3,p4);
   *this = temp;
}

ossimPolyArea2d() [6/9]

ossimPolyArea2d::ossimPolyArea2d

(

const ossimPolyArea2d &

rhs

)

Definition at line 344 of file ossimPolyArea2d.cpp.

   :m_privateData(new OssimPolyArea2dPrivate) 
{
   *this = rhs;
}

ossimPolyArea2d() [7/9]

ossimPolyArea2d::ossimPolyArea2d

(

const ossimIrect &

rect

)

Definition at line 320 of file ossimPolyArea2d.cpp.

   :m_privateData(new OssimPolyArea2dPrivate)
{
   (*this) = rect;
}

ossimPolyArea2d() [8/9]

ossimPolyArea2d::ossimPolyArea2d

(

const ossimDrect &

rect

)

Definition at line 326 of file ossimPolyArea2d.cpp.

   :m_privateData(new OssimPolyArea2dPrivate)
{
   (*this) = rect;
}

ossimPolyArea2d() [9/9]

ossimPolyArea2d::ossimPolyArea2d

(

const ossimPolygon &

polygon

)

Definition at line 332 of file ossimPolyArea2d.cpp.

   :m_privateData(new OssimPolyArea2dPrivate)
{
   (*this) = polygon;
}

~ossimPolyArea2d()

ossimPolyArea2d::~ossimPolyArea2d

(

)

Definition at line 361 of file ossimPolyArea2d.cpp.

References m_privateData.

{
   if(m_privateData)
   {
      delete m_privateData;
      m_privateData = 0;
   }
}

Member Function Documentation

add()

void ossimPolyArea2d::add

(

const ossimPolyArea2d &

rhs

)

Definition at line 584 of file ossimPolyArea2d.cpp.

References isEmpty(), OssimPolyArea2dPrivate::m_geometry, m_privateData, and OssimPolyArea2dPrivate::setGeometry().

Referenced by ossimImageGeometry::calculatePolyBounds(), ossimImageViewProjectionTransform::getViewSegments(), and ossimImageRenderer::initializeBoundingRects().

{
   if(isEmpty())
   {
      *this=rhs;
   }
   else
   {
      geos::geom::Geometry* geom = m_privateData->m_geometry->Union(rhs.m_privateData->m_geometry);
      if(geom) m_privateData->setGeometry(geom);
   }
}

clear()

void ossimPolyArea2d::clear ( )

inline

Definition at line 53 of file ossimPolyArea2d.h.

Referenced by ossimImageGeometry::calculatePolyBounds(), and ossimImageViewProjectionTransform::getViewSegments().

   {
      clearPolygons();
   }

clearPolygons()

void ossimPolyArea2d::clearPolygons ( )

protected

Definition at line 597 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::deleteGeometry(), and m_privateData.

Referenced by getBufferedShape(), loadState(), operator+(), operator+=(), operator-(), and operator-=().

{
   m_privateData->deleteGeometry();
#if 0
   clearEngine();
#endif
}

getBoundingRect()

void ossimPolyArea2d::getBoundingRect

(

ossimDrect &

rect

)

Definition at line 706 of file ossimPolyArea2d.cpp.

References isEmpty(), OssimPolyArea2dPrivate::m_geometry, m_privateData, and ossimDrect::makeNan().

Referenced by ATP::AtpGenerator::initialize().

{
   rect.makeNan();

   if(!isEmpty())
   {
      const geos::geom::Envelope* envelope = m_privateData->m_geometry->getEnvelopeInternal();

      rect = ossimDrect(envelope->getMinX(), envelope->getMinY(), envelope->getMaxX(), envelope->getMaxY());
   }
}

getBufferedShape()

ossimPolyArea2d ossimPolyArea2d::getBufferedShape

(

double

distance = FLT_EPSILON

)

const

Buffers the ossimPolyArea2d shape and returns a copy.

This method does not alter polygon.

Parameters

distance

is the distance to buffer the shape by. Positive values will expand the shape, and negative values will shrink the shape.

Returns

A shape that is a buffered (expanded/contracted) version of this shape

Definition at line 730 of file ossimPolyArea2d.cpp.

References clearPolygons(), distance(), OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), ossimNotifyLevel_DEBUG, and OssimPolyArea2dPrivate::setGeometry().

                                                                      {
    ossimPolyArea2d result;
    try{
        geos::operation::buffer::BufferOp buffer_operation(m_privateData->m_geometry);
        result.m_privateData->setGeometry( buffer_operation.getResultGeometry(distance));
    }catch( const std::exception& e ){
        ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::getBufferedShape Caught exception: " << e.what() << std::endl;
        result.clearPolygons();
    }catch( ... ){
        ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::getBufferedShape Caught exception!" << std::endl;
        result.clearPolygons();
    }
    return result;
}

getCompletePolygons()

bool ossimPolyArea2d::getCompletePolygons

(

vector< ossimPolyArea2d > &

polyList

)

const

Gets all of the polygons stored with their holes embedded.

This may be useful if an operation was performed on the original ossimPolyArea2d that caused multiple polygons to be created internally.

For example, if a rectangle is intersected with a U shape, the two top portions of the U would be their own separate polygon. It's also possible for these polygons to contain their own holes. This function will return the two top polygons as separate ossimPolyArea2d objects (with any of their holes embedded inside them).

---

........ .........
. . . .

-.---—.--------—.----—.— . . . . . ............. . . . ............................

Parameters

polylist

an empty vector of ossimPolyArea2d that will be filled

Returns

returns true if it successfully places polygons in the input vector

Definition at line 631 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, m_privateData, and recurseCompleteGeometries().

{
    bool foundPolys = false;
    if(m_privateData->m_geometry){
        ossim_uint32 sizeBefore = (ossim_uint32)polyList.size();
        recurseCompleteGeometries(polyList, m_privateData->m_geometry);
        foundPolys = (sizeBefore != polyList.size());
    }
    return foundPolys;
}

getPolygonHoles()

bool ossimPolyArea2d::getPolygonHoles

(

vector< ossimPolygon > &

polyList

)

const

Definition at line 618 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, m_privateData, and recurseHoles().

{
   bool foundPolys = false;
   if(m_privateData->m_geometry)
   {
      ossim_uint32 sizeBefore = (ossim_uint32)polyList.size();
      recurseHoles(polyList, m_privateData->m_geometry);
      foundPolys = (sizeBefore != polyList.size());
   }

   return foundPolys;
}

getVisiblePolygons()

bool ossimPolyArea2d::getVisiblePolygons

(

vector< ossimPolygon > &

polyList

)

const

Definition at line 605 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, m_privateData, and recurseVisibleGeometries().

Referenced by ossimPolygon::clipToRect(), ossimImageDataHelper::copyInputToThis(), ossimImageDataHelper::fill(), and ATP::AtpGenerator::initialize().

{
   bool foundPolys = false;
   if(m_privateData->m_geometry)
   {
      ossim_uint32 sizeBefore = (ossim_uint32)polyList.size();
      recurseVisibleGeometries(polyList, m_privateData->m_geometry);
      foundPolys = (sizeBefore != polyList.size());
   }

   return foundPolys;
}

intersects()

bool ossimPolyArea2d::intersects

(

const ossimPolyArea2d &

rhs

)

const

Definition at line 417 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, and m_privateData.

Referenced by ossimImageRenderer::recursiveResample().

{
   bool result = false;

   if(m_privateData->m_geometry&&rhs.m_privateData->m_geometry)
   {
      result = m_privateData->m_geometry->intersects(rhs.m_privateData->m_geometry); 
   }

   return result;
}

isEmpty()

bool ossimPolyArea2d::isEmpty

(

)

const

Definition at line 642 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, and m_privateData.

Referenced by add(), getBoundingRect(), isPointWithin(), and saveState().

{
   bool result = true;
   if (m_privateData&&m_privateData->m_geometry)
   {
      result = m_privateData->m_geometry->isEmpty();
   }

   return result;
}

isPointWithin() [1/2]

bool ossimPolyArea2d::isPointWithin

(

const ossimDpt &

point

)

const

Definition at line 684 of file ossimPolyArea2d.cpp.

References ossimDpt::x, and ossimDpt::y.

{
   return isPointWithin(point.x, point.y);
}

isPointWithin() [2/2]

bool ossimPolyArea2d::isPointWithin	(	double	x,
		double	y
	)		const

Definition at line 689 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::geomFactory(), isEmpty(), OssimPolyArea2dPrivate::m_geometry, m_privateData, x, and y.

{
   bool result = false;

   if(!isEmpty())
   {
      geos::geom::Coordinate c(x,y);
      geos::geom::Geometry* geom = m_privateData->geomFactory()->createPoint(c);
  
      result = m_privateData->m_geometry->intersects(geom);

      delete geom;
   }

   return result;
}

isValid()

bool ossimPolyArea2d::isValid

(

bool

displayValidationError = false

)

const

Definition at line 653 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), and ossimNotifyLevel_INFO.

Referenced by ossimImageGeometry::calculatePolyBounds().

{
   bool result = false;
   
   if(m_privateData&&m_privateData->m_geometry)
   {
      if(displayValidationError)
      {
         geos::operation::valid::IsValidOp validityCheck(m_privateData->m_geometry);
         geos::operation::valid::TopologyValidationError*
            topologyValidationError(validityCheck.getValidationError());
         // if(topologyValidationError == nullptr)
         if(topologyValidationError == 0)
         {
            result = true;
         }
         else
         {
            ossimNotify(ossimNotifyLevel_INFO)
               << "ossimPolyArea2d::isValid: " << topologyValidationError->toString() << std::endl;
         }
      }
      else
      {
         result = m_privateData->m_geometry->isValid();
      }
   }
   
   return result;
}

loadState()

bool ossimPolyArea2d::loadState	(	const ossimKeywordlist &	kwl,
		const char *	prefix = 0
	)

Definition at line 833 of file ossimPolyArea2d.cpp.

References ossimString::c_str(), clearPolygons(), ossimString::empty(), ossimKeywordlist::find(), OssimPolyArea2dPrivate::geomFactory(), m_privateData, ossimNotify(), ossimNotifyLevel_DEBUG, and OssimPolyArea2dPrivate::setGeometry().

{
   if(m_privateData)
   {
      ossimString wkt = kwl.find(prefix, "wkt");

      if(!wkt.empty())
      {
         geos::io::WKTReader reader(m_privateData->geomFactory());
         try
         {
            m_privateData->setGeometry(reader.read(wkt.c_str()));
         }
         catch( const std::exception& e )
         {
            ossimNotify(ossimNotifyLevel_DEBUG)
               << "ossimPolyArea2d::loadState Caught exception: " << e.what() << std::endl;
            this->clearPolygons();
         }
         catch(...)
         {
            ossimNotify(ossimNotifyLevel_DEBUG)
               << "ossimPolyArea2d::loadState Caught exception!" << std::endl;
            this->clearPolygons(); 
         }
      }
   }
   return true;
}

operator&()

ossimPolyArea2d ossimPolyArea2d::operator &

(

const ossimPolyArea2d &

rhs

)

const

operator&=()

const ossimPolyArea2d& ossimPolyArea2d::operator &=

(

const ossimPolyArea2d &

rhs

)

operator+()

ossimPolyArea2d ossimPolyArea2d::operator+

(

const ossimPolyArea2d &

rhs

)

const

Definition at line 456 of file ossimPolyArea2d.cpp.

References clearPolygons(), OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), ossimNotifyLevel_DEBUG, and OssimPolyArea2dPrivate::setGeometry().

{
   if((this!=&rhs) && m_privateData->m_geometry && rhs.m_privateData->m_geometry)
   {
      ossimPolyArea2d result;
      try // GEOS code throws exceptions...
      {
         result.m_privateData->setGeometry(m_privateData->m_geometry->Union(
                                              rhs.m_privateData->m_geometry));
      }  
      catch( const std::exception& e )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator+ Caught exception: " << e.what() << std::endl;
         result.clearPolygons();
      }
      catch( ... )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator+ Caught exception!" << std::endl;
         result.clearPolygons();
      }
      return result;
   }
   return *this;
}

operator+=()

const ossimPolyArea2d & ossimPolyArea2d::operator+=

(

const ossimPolyArea2d &

rhs

)

Definition at line 534 of file ossimPolyArea2d.cpp.

References clearPolygons(), OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), ossimNotifyLevel_DEBUG, and OssimPolyArea2dPrivate::setGeometry().

{
   if((this!=&rhs) && m_privateData->m_geometry && rhs.m_privateData->m_geometry)
   {
      try // GEOS code throws exceptions...
      {
         m_privateData->setGeometry(m_privateData->m_geometry->Union(
                                       rhs.m_privateData->m_geometry));
      }
      catch( const std::exception& e )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator+= Caught exception: " << e.what() << std::endl;
         this->clearPolygons();
      }
      catch( ... )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator+= Caught exception!" << std::endl;
         this->clearPolygons();
      }      
   }
   return *this;
}

operator-()

ossimPolyArea2d ossimPolyArea2d::operator-

(

const ossimPolyArea2d &

rhs

)

const

Definition at line 482 of file ossimPolyArea2d.cpp.

References clearPolygons(), OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), ossimNotifyLevel_DEBUG, and OssimPolyArea2dPrivate::setGeometry().

{
   if((this!=&rhs) && m_privateData->m_geometry && rhs.m_privateData->m_geometry)
   {
      ossimPolyArea2d result;
      try // GEOS code throws exceptions...
      {
         result.m_privateData->setGeometry(m_privateData->m_geometry->difference(
                                              rhs.m_privateData->m_geometry));
      }
      catch( const std::exception& e )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator- Caught exception: " << e.what() << std::endl;
         result.clearPolygons();
      }
      catch( ... )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator- Caught exception!" << std::endl;
         result.clearPolygons();
      }
      return result;
   }
   return *this;
}

operator-=()

const ossimPolyArea2d & ossimPolyArea2d::operator-=

(

const ossimPolyArea2d &

rhs

)

Definition at line 559 of file ossimPolyArea2d.cpp.

References clearPolygons(), OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), ossimNotifyLevel_DEBUG, and OssimPolyArea2dPrivate::setGeometry().

{
   if((this!=&rhs) && m_privateData->m_geometry && rhs.m_privateData->m_geometry)
   {
      try // GEOS code throws exceptions...
      {
         m_privateData->setGeometry(m_privateData->m_geometry->difference(
                                       rhs.m_privateData->m_geometry));
      }
      catch( const std::exception& e )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator-= Caught exception: " << e.what() << std::endl;
         this->clearPolygons();
      }
      catch( ... )
      {
         ossimNotify(ossimNotifyLevel_DEBUG)
            << "ossimPolyArea2d::operator-= Caught exception!" << std::endl;
         this->clearPolygons();
      }      
   }
   return *this;
}

operator=() [1/6]

const ossimPolyArea2d & ossimPolyArea2d::operator=

(

const ossimPolyArea2d &

rhs

)

Definition at line 370 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, m_privateData, and OssimPolyArea2dPrivate::setGeometry().

{ 
   if(this != &rhs)
   {
      if(rhs.m_privateData->m_geometry)
      {
         m_privateData->setGeometry(rhs.m_privateData->m_geometry->clone());
      }
   }
   return *this;
}

operator=() [2/6]

const ossimPolyArea2d & ossimPolyArea2d::operator=

(

const ossimPolygon &

rhs

)

Definition at line 382 of file ossimPolyArea2d.cpp.

References m_privateData, and OssimPolyArea2dPrivate::setGeometry().

{
   m_privateData->setGeometry(polygon);

   return *this;
}

operator=() [3/6]

const ossimPolyArea2d & ossimPolyArea2d::operator=

(

const ossimIrect &

rect

)

Definition at line 389 of file ossimPolyArea2d.cpp.

{
   return (*this = ossimPolygon(rect));
}

operator=() [4/6]

const ossimPolyArea2d & ossimPolyArea2d::operator=

(

const ossimDrect &

rect

)

Definition at line 394 of file ossimPolyArea2d.cpp.

{
   return (*this = ossimPolygon(rect));
}

operator=() [5/6]

const ossimPolyArea2d & ossimPolyArea2d::operator=

(

const vector< ossimGpt > &

polygon

)

Definition at line 399 of file ossimPolyArea2d.cpp.

References n.

{
   std::vector<ossimDpt> pts;
   int idx = 0;
   int n = (int)polygon.size();
   for(idx = 0; idx < n;++idx)
   {
      pts.push_back(polygon[idx]);
   }
  
   return (*this = ossimPolygon(pts));
}

operator=() [6/6]

const ossimPolyArea2d & ossimPolyArea2d::operator=

(

const vector< ossimDpt > &

polygon

)

Definition at line 412 of file ossimPolyArea2d.cpp.

{
   return (*this = ossimPolygon(polygon));
}

recurseCompleteGeometries()

void ossimPolyArea2d::recurseCompleteGeometries ( std::vector< ossimPolyArea2d > &  polyList, const geos::geom::Geometry *  geom  ) const

protected

Recurses over the Geometry object to load all complete polygons (a shell and any internal holes) into the ossimPolyArea2d.

Definition at line 240 of file ossimPolyArea2d.cpp.

References ossimPolygon::addPoint(), and ossimPolyArea2d().

Referenced by getCompletePolygons().

{
   int nGeoms = (int)geom->getNumGeometries();
   if(nGeoms < 2 )
   {
      const geos::geom::Polygon* poly = dynamic_cast<const geos::geom::Polygon*> (geom);

      if (poly)
      {
         //get exterior shell for the geometry
         ossimPolygon shell;
         const geos::geom::LineString* lineString =
            dynamic_cast<const geos::geom::LineString*> (poly->getExteriorRing());
         if (lineString)
         {
            int nPoints = (int)lineString->getNumPoints();
            for (int idx = 0; idx<nPoints; idx++)
            {
               std::auto_ptr<const geos::geom::Point> point(lineString->getPointN(idx));
               shell.addPoint(point->getX(), point->getY());
            }
         }
         
         // Get interior rings for the geometry.
         std::size_t nInteriorRings = poly->getNumInteriorRing();
         vector<ossimPolygon> holes(nInteriorRings);
         for(std::size_t holeIdx = 0; holeIdx < nInteriorRings; ++holeIdx)
         {
            const geos::geom::LineString* lineString = poly->getInteriorRingN(holeIdx);
            if (lineString)
            {
               std::size_t nPoints = lineString->getNumPoints();
               for (std::size_t idx = 0; idx<nPoints; ++idx)
               {
                  std::auto_ptr<const geos::geom::Point> point(lineString->getPointN(idx));
                  holes[holeIdx].addPoint(point->getX(), point->getY());
               }
            }
         }
         polyList.push_back(ossimPolyArea2d(shell, holes));
      }
   }
   else
   {
      int idx = 0;
      
      for (idx=0; idx < nGeoms; idx++)
      {
         recurseCompleteGeometries(polyList, geom->getGeometryN(idx));
      }
   }
}

recurseHoles()

void ossimPolyArea2d::recurseHoles ( ossimPolygon::Vector &  polyList, const geos::geom::Geometry *  geom  ) const

protected

Definition at line 195 of file ossimPolyArea2d.cpp.

Referenced by getPolygonHoles().

{
   int nGeoms = (int)geom->getNumGeometries();
   
   if(nGeoms < 2 )
   {
      const geos::geom::Polygon* poly = dynamic_cast<const geos::geom::Polygon*> (geom);

      if (poly)
      {
         ossim_uint32 nInteriorRings = (ossim_uint32)poly->getNumInteriorRing();
         ossim_uint32 idx = 0;
         
         for(idx = 0; idx < nInteriorRings; ++idx)
         {
            const geos::geom::LineString* lineString = poly->getInteriorRingN(idx);
            if (lineString)
            {
               int currentPolyIdx = (int)polyList.size();
               int nPoints = (int)lineString->getNumPoints();
               int idx = 0;

               polyList.push_back(ossimPolygon());

               for (idx=0; idx<nPoints; idx++)
               {
                  std::auto_ptr<const geos::geom::Point> point(lineString->getPointN(idx));
                  polyList[currentPolyIdx].addPoint(point->getX(), point->getY());
               }
            }
         }
      }
   }
   else
   {
      int idx = 0;
      
      for (idx=0; idx < nGeoms; idx++)
      {
         recurseHoles(polyList, geom->getGeometryN(idx));
      }
   }
}

recurseVisibleGeometries()

void ossimPolyArea2d::recurseVisibleGeometries ( ossimPolygon::Vector &  polyList, const geos::geom::Geometry *  geom  ) const

protected

Definition at line 158 of file ossimPolyArea2d.cpp.

Referenced by getVisiblePolygons().

{
   int nGeoms = (int)geom->getNumGeometries();
   
   if(nGeoms < 2 )
   {
      const geos::geom::Polygon* poly = dynamic_cast<const geos::geom::Polygon*> (geom);
      
      if (poly)
      {
         const geos::geom::LineString* lineString = dynamic_cast<const geos::geom::LineString*> (poly->getExteriorRing());
         if (lineString)
         {
            int currentPolyIdx = (int)polyList.size();
            int nPoints = (int)lineString->getNumPoints();
            int idx = 0;
            
            polyList.push_back(ossimPolygon());
            
            for (idx=0; idx<nPoints; idx++)
            {
               std::auto_ptr<const geos::geom::Point> point(lineString->getPointN(idx));
               polyList[currentPolyIdx].addPoint(point->getX(), point->getY());
            }
         }
      }
   }
   else
   {
      for (int idx=0; idx < nGeoms; ++idx)
      {
         recurseVisibleGeometries(polyList, geom->getGeometryN(idx));
      }
   }
}

saveState()

bool ossimPolyArea2d::saveState	(	ossimKeywordlist &	kwl,
		const char *	prefix = 0
	)		const

Definition at line 808 of file ossimPolyArea2d.cpp.

References ossimKeywordlist::add(), isEmpty(), OssimPolyArea2dPrivate::m_geometry, m_privateData, and ossimKeywordNames::TYPE_KW.

{
   kwl.add(prefix,
           ossimKeywordNames::TYPE_KW,
           "ossimPolyArea2d",
           true);

   if(!isEmpty())
   {
      geos::io::WKTWriter writer;

      kwl.add(prefix,
              "wkt",
              writer.write(m_privateData->m_geometry).c_str(),
              true);
   }
   // else
   // {
   //
   // }

   return true;
}

setToBufferedShape()

ossimPolyArea2d & ossimPolyArea2d::setToBufferedShape

(

double

distance = FLT_EPSILON

)

Definition at line 746 of file ossimPolyArea2d.cpp.

References distance(), OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), ossimNotifyLevel_DEBUG, and OssimPolyArea2dPrivate::setGeometry().

Referenced by ossimImageGeometry::calculatePolyBounds().

{
   try{
      geos::operation::buffer::BufferOp buffer_operation(m_privateData->m_geometry);
      m_privateData->setGeometry( buffer_operation.getResultGeometry(distance));
   }catch( const std::exception& e ){
      ossimNotify(ossimNotifyLevel_DEBUG)
         << "ossimPolyArea2d::getBufferedShape Caught exception: " << e.what() << std::endl;
   }catch( ... ){
      ossimNotify(ossimNotifyLevel_DEBUG)
         << "ossimPolyArea2d::getBufferedShape Caught exception!" << std::endl;
   }
   return *this;
}

toMultiPolygon()

ossimPolyArea2d & ossimPolyArea2d::toMultiPolygon

(

)

Definition at line 761 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, m_privateData, ossimNotify(), ossimNotifyLevel_WARN, and OssimPolyArea2dPrivate::setGeometry().

{


   try{
      if(m_privateData->m_geometry)
      {
         switch(m_privateData->m_geometry->getGeometryTypeId())
         {
            case geos::geom::GEOS_POLYGON:
            {
               std::vector<geos::geom::Geometry*> values;
               values.push_back(m_privateData->m_geometry->clone());

               m_privateData->setGeometry(m_privateData->m_geometry->getFactory()->createMultiPolygon(values));
               break;
            }
            case geos::geom::GEOS_MULTIPOLYGON:
            {
               // intentionally left blank
               break;
            }
            default:
            {  
               // might need an error at a later date
               ossimNotify(ossimNotifyLevel_WARN)
                  << "ossimPolyArea2d::toMultiPolygon Geometry type can not be converted to a multi polygon: " <<m_privateData->m_geometry->getGeometryType()<< std::endl;

               break;
            }
         }
      }
   }
   catch(const std::exception& e)
   {
      ossimNotify(ossimNotifyLevel_WARN)
         << "ossimPolyArea2d::toMultiPolygon Caught exception: " << e.what() << std::endl;
   }
   catch(...)
   {
      ossimNotify(ossimNotifyLevel_WARN)
         << "ossimPolyArea2d::toMultiPolygon Caught exception!" << std::endl;
   }

   return *this;
}

toString()

std::string ossimPolyArea2d::toString

(

)

const

Returns the Well Known Text string.

Definition at line 718 of file ossimPolyArea2d.cpp.

References OssimPolyArea2dPrivate::m_geometry, and m_privateData.

{
   std::string result = "";

   if(m_privateData->m_geometry)
   {
      result = m_privateData->m_geometry->toString();
   }

   return result;
}

Friends And Related Function Documentation

operator<<

OSSIM_DLL std::ostream& operator<< ( std::ostream &  out, const ossimPolyArea2d &  data  )

friend

Definition at line 294 of file ossimPolyArea2d.cpp.

{
   if(rhs.m_privateData->m_geometry)
   {
      out << rhs.m_privateData->m_geometry->toString();
   }
   return out;
}

OssimPolyArea2dPrivate

friend class OssimPolyArea2dPrivate

friend

Definition at line 34 of file ossimPolyArea2d.h.

Member Data Documentation

m_privateData

OssimPolyArea2dPrivate* ossimPolyArea2d::m_privateData

protected

Definition at line 149 of file ossimPolyArea2d.h.

Referenced by add(), clearPolygons(), getBoundingRect(), getBufferedShape(), getCompletePolygons(), getPolygonHoles(), getVisiblePolygons(), intersects(), isEmpty(), isPointWithin(), isValid(), loadState(), operator+(), operator+=(), operator-(), operator-=(), operator<<(), operator=(), ossimPolyArea2d(), saveState(), setToBufferedShape(), toMultiPolygon(), toString(), and ~ossimPolyArea2d().

---

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

• ossimPolyArea2d.h
• ossimPolyArea2d.cpp