dimeLWPolyline Class Reference

The dimeLWPolyline class handles an LWPOLYLINE entity. More...

#include <dime/entities/LWPolyline.h>

Inheritance diagram for dimeLWPolyline:

Public Member Functions
	dimeLWPolyline ()
virtual	~dimeLWPolyline ()
virtual dimeEntity *	copy (dimeModel *const model) const
virtual bool	getRecord (const int groupcode, dimeParam &param, const int index) const
virtual const char *	getEntityName () const
virtual void	print () const
virtual bool	write (dimeOutput *const out)
virtual int	typeId () const
virtual int	countRecords () const
virtual GeometryType	extractGeometry (dimeArray< dimeVec3f > &verts, dimeArray< int > &indices, dimeVec3f &extrusionDir, dxfdouble &thickness)
int	getNumVertices () const
const dxfdouble *	getXCoords () const
const dxfdouble *	getYCoords () const
const dxfdouble *	getStartingWidths () const
const dxfdouble *	getEndWidths () const
const dxfdouble *	getBulges () const
dxfdouble	getElevation () const
dxfdouble	getConstantWidth () const
int16	getFlags () const
Public Member Functions inherited from dimeExtrusionEntity
	dimeExtrusionEntity ()
void	setExtrusionDir (const dimeVec3f &v)
const dimeVec3f &	getExtrusionDir () const
void	setThickness (const dxfdouble val)
dxfdouble	getThickness () const
virtual bool	isOfType (const int thtypeid) const
Public Member Functions inherited from dimeEntity
	dimeEntity ()
virtual	~dimeEntity ()
int16	getEntityFlags () const
void	setEntityFlags (const int16 flags)
int16	getColorNumber () const
void	setColorNumber (const int16 c)
virtual void	setLayer (const dimeLayer *const layer)
const dimeLayer *	getLayer () const
const char *	getLayerName () const
virtual bool	read (dimeInput *const in)
bool	isDeleted () const
void	setDeleted (const bool onOff=true)
bool	isTagged () const
void	setTagged (const bool onOff=true)
Public Member Functions inherited from dimeRecordHolder
	dimeRecordHolder (const int separator)
virtual	~dimeRecordHolder ()
void	setRecord (const int groupcode, const dimeParam &value, dimeMemHandler *const memhandler=NULL)
void	setRecords (const int *const groupcodes, const dimeParam *const params, const int numrecords, dimeMemHandler *const memhandler=NULL)
void	setIndexedRecord (const int groupcode, const dimeParam &value, const int index, dimeMemHandler *const memhandler=NULL)
dimeRecord *	findRecord (const int groupcode, const int index=0)
int	getNumRecordsInRecordHolder (void) const
dimeRecord *	getRecordInRecordHolder (const int idx) const
Public Member Functions inherited from dimeBase
	dimeBase (void)
virtual	~dimeBase ()
void *	operator new (size_t size, dimeMemHandler *memhandler=NULL, const int alignment=4)
void	operator delete (void *ptr)

Protected Member Functions
virtual bool	handleRecord (const int groupcode, const dimeParam &param, dimeMemHandler *const memhandler)
Protected Member Functions inherited from dimeExtrusionEntity
void	copyExtrusionData (const dimeExtrusionEntity *const entity)
bool	writeExtrusionData (dimeOutput *const out)
Protected Member Functions inherited from dimeEntity
bool	preWrite (dimeOutput *const file)
virtual bool	traverse (const dimeState *const state, dimeCallback callback, void *userdata)
virtual void	fixReferences (dimeModel *const model)
virtual bool	shouldWriteRecord (const int groupcode) const
bool	copyRecords (dimeEntity *const entity, dimeModel *const model) const
Protected Member Functions inherited from dimeRecordHolder
bool	copyRecords (dimeRecordHolder *const rh, dimeMemHandler *const memhandler) const

Additional Inherited Members
Public Types inherited from dimeEntity
enum	GeometryType { NONE , POLYGONS , LINES , POINTS }
Public Types inherited from dimeBase
enum	{   dimeBaseType = 1 , dimeRecordType , dimeStringRecordType , dimeFloatRecordType ,   dimeDoubleRecordType , dimeInt8RecordType , dimeInt16RecordType , dimeInt32RecordType ,   dimeHexRecordType , dimeRecordHolderType , dimeClassType , dimeUnknownClassType ,   dimeObjectType , dimeUnknownObjectType , dimeEntityType , dimeUnknownEntityType ,   dimePolylineType , dimeVertexType , dimeFaceEntityType , dimeExtrusionEntityType ,   dime3DFaceType , dimeSolidType , dimeTraceType , dimeLineType ,   dimeTextType , dimePointType , dimeBlockType , dimeInsertType ,   dimeCircleType , dimeArcType , dimeLWPolylineType , dimeEllipseType ,   dimeSplineType , dimeSectionType , dimeUnknownSectionType , dimeEntitiesSectionType ,   dimeBlocksSectionType , dimeTablesSectionType , dimeHeaderSectionType , dimeClassesSectionType ,   dimeObjectsSectionType , dimeTableType , dimeTableEntryType , dimeUnknownTableType ,   dimeUCSTableType , dimeLayerTableType , dimeLastTypeTag }
Static Public Member Functions inherited from dimeEntity
static dimeEntity *	createEntity (const char *const name, dimeMemHandler *const memhandler=NULL)
static bool	readEntities (dimeInput *const file, dimeArray< dimeEntity * > &array, const char *const stopat)
static bool	copyEntityArray (const dimeEntity *const *const array, const int nument, dimeModel *const model, dimeArray< dimeEntity * > &destarray)
static dimeEntity **	copyEntityArray (const dimeEntity *const *const array, int &nument, dimeModel *const model)
static void	arbitraryAxis (const dimeVec3f &givenaxis, dimeVec3f &newaxis)
static void	generateUCS (const dimeVec3f &givenaxis, dimeMatrix &m)
Protected Attributes inherited from dimeExtrusionEntity
dimeVec3f	extrusionDir
dxfdouble	thickness
Protected Attributes inherited from dimeRecordHolder
dimeRecord **	records
int	numRecords

Detailed Description

The dimeLWPolyline class handles an LWPOLYLINE entity.

Constructor & Destructor Documentation

dimeLWPolyline()

dimeLWPolyline::dimeLWPolyline

(

)

Constructor.

Referenced by copy().

~dimeLWPolyline()

dimeLWPolyline::~dimeLWPolyline ( )

virtual

Destructor.

Member Function Documentation

copy()

dimeEntity * dimeLWPolyline::copy ( dimeModel *const model ) const

virtual

Must be implemented by subclasses to return a copy of the entity. model is the model the new entity should belong to.

Implements dimeEntity.

References dimeExtrusionEntity::copyExtrusionData(), dimeEntity::copyRecords(), dimeLWPolyline(), and dimeModel::getMemHandler().

countRecords()

int dimeLWPolyline::countRecords ( ) const

virtual

Returns the number of records in the record holder. Should be overloaded by subclasses which should count their records, and then call the parent's method. This method is used to precalculate the number of records to be written. Very useful when progress information is needed during write().

Reimplemented from dimeExtrusionEntity.

References dimeExtrusionEntity::countRecords().

extractGeometry()

dimeEntity::GeometryType dimeLWPolyline::extractGeometry ( dimeArray< dimeVec3f > & verts, dimeArray< int > & indices, dimeVec3f & extrusionDir, dxfdouble & thickness )

virtual

A special convenience function, included for your pleasure. Enables the user to ignore the type of entity, and just call this method when extracting geometry. Very useful for 3D viewers that need DXF support. Check out the dxf2vrml directory for an example on how to convert a DXF file to VRML.

Should be overloaded by all subclasses that have geometry, default function returns no geometry. Don't forget to transform vertices by the current transformation matrix if used in a callback from dimeEntity::traverse().

If there are coordinates, but no indices, this means running indices for the entire vertex array.

Different faces and/or line segments are separated by a -1 in the indices array, just as in VRML files.

If thickness != 0.0, the data should, before transformation, be extruded by that length along the extrusion direction. Hence, a point becomes a line, a line becomes a quad, and a polygon becomes an object with a volume.

If thickness == 0.0 and extrusionDir != (0,0,1) all the vertices should be transformed by a matrix that can be created using dimeEntity::generateUCS(). If you are using dimeModel::traverseEntities() to extract the geometry, simply right-multiply the UCS matrix with the matrix found in dimeState to get the correct transformation.

Reimplemented from dimeEntity.

getEntityName()

const char * dimeLWPolyline::getEntityName ( ) const

virtual

Must be implemented by subclasses to return the entity name; e.g. POLYLINE, 3DFACE, etc.

Implements dimeEntity.

getRecord()

bool dimeLWPolyline::getRecord ( const int groupcode, dimeParam & param, const int index ) const

virtual

Will return the value of the record with group code groupcode. false is returned if the record could not be found. Subclasses should overload this method if one or several records are stored in the class. If the groupcode queried is not stored internally, the subclass should call its parent's method.

Reimplemented from dimeExtrusionEntity.

References dimeExtrusionEntity::getRecord().

handleRecord()

bool dimeLWPolyline::handleRecord ( const int groupcode, const dimeParam & param, dimeMemHandler *const mh )

protectedvirtual

Handles the callback from dimeEntity::readRecords().

Reimplemented from dimeExtrusionEntity.

References dimeExtrusionEntity::handleRecord().

print()

void dimeLWPolyline::print ( ) const

virtual

Reimplemented from dimeEntity.

typeId()

int dimeLWPolyline::typeId ( ) const

virtual

Must be implemented by all subclasses, and should return an unique id for that class.

Reimplemented from dimeExtrusionEntity.

write()

bool dimeLWPolyline::write ( dimeOutput *const file )

virtual

Will write the records to file.

Reimplemented from dimeEntity.

References dimeEntity::preWrite(), dimeEntity::write(), dimeOutput::writeDouble(), dimeExtrusionEntity::writeExtrusionData(), dimeOutput::writeGroupCode(), and dimeOutput::writeInt16().

---

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

• LWPolyline.h
• LWPolyline.cpp