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dimeArc Class Reference

The dimeArc class handles an ARC entity. More...

#include <dime/entities/Arc.h>

Inheritance diagram for dimeArc:

dimeExtrusionEntity dimeEntity dimeRecordHolder dimeBase List of all members.

Public Member Functions

 dimeArc ()
void setCenter (const dimeVec3f &c)
void getCenter (dimeVec3f &c) const
void setRadius (const dxfdouble r)
dxfdouble getRadius () const
void setStartAngle (const dxfdouble a)
dxfdouble getStartAngle () const
void setEndAngle (const dxfdouble a)
dxfdouble getEndAngle () const
virtual bool getRecord (const int groupcode, dimeParam &param, const int index=0) const
virtual const char * getEntityName () const
virtual dimeEntitycopy (dimeModel *const model) 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)

Protected Member Functions

virtual bool handleRecord (const int groupcode, const dimeParam &param, dimeMemHandler *const memhandler)

Detailed Description

The dimeArc class handles an ARC entity.


Constructor & Destructor Documentation

dimeArc::dimeArc  ) 
 

Constructor.


Member Function Documentation

dimeEntity * dimeArc::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.

int dimeArc::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.

dimeEntity::GeometryType dimeArc::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.

const char * dimeArc::getEntityName  )  const [virtual]
 

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

Implements dimeEntity.

bool dimeArc::getRecord const int  groupcode,
dimeParam param,
const int  index = 0
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.

bool dimeArc::handleRecord const int  groupcode,
const dimeParam param,
dimeMemHandler *const  memhandler
[protected, virtual]
 

Must be overloaded by entities that directly supports a record type. During dimeRecordHolder::read(), dimeRecordHolder::setRecord and dimeRecordHolder::setRecords, this function is called for every record found, and it is up to the subclass if the record should be stored internally, or if a generic record should be created and stored in this superclass. A subclass should return when it will handle the record, false otherwise. Default function does nothing, and returns false.

For entities, records with group codes 8 (layer name) and 62 (color number) are automatically handled by the dimeEntity class.

See also:
dimeRecordHolder::read()

dimeRecordHolder::setRecord()

Reimplemented from dimeExtrusionEntity.

int dimeArc::typeId  )  const [virtual]
 

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

Reimplemented from dimeExtrusionEntity.

bool dimeArc::write dimeOutput *const  file  )  [virtual]
 

Will write the records to file.

Reimplemented from dimeEntity.


The documentation for this class was generated from the following files:
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System documentation was generated using doxygen.