The OBJ mesh reader into XDE document. More...

#include <RWObj_CafReader.hxx>

Inheritance diagram for RWObj_CafReader:

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Public Member Functions
	RWObj_CafReader ()
	Empty constructor.

bool	IsSinglePrecision () const
	Return single precision flag for reading vertex data (coordinates); FALSE by default.

void	SetSinglePrecision (bool theIsSinglePrecision)
	Setup single/double precision flag for reading vertex data (coordinates).

Public Member Functions inherited from RWMesh_CafReader
	RWMesh_CafReader ()
	Empty constructor.

	~RWMesh_CafReader () override
	Destructor.

const occ::handle< TDocStd_Document > &	Document () const
	Return target document.

void	SetDocument (const occ::handle< TDocStd_Document > &theDoc)
	Set target document. Set system length unit according to the units of the document.

const TCollection_AsciiString &	RootPrefix () const
	Return prefix for generating root labels names.

void	SetRootPrefix (const TCollection_AsciiString &theRootPrefix)
	Set prefix for generating root labels names.

bool	ToFillIncompleteDocument () const
	Flag indicating if partially read file content should be put into the XDE document, TRUE by default.

void	SetFillIncompleteDocument (bool theToFillIncomplete)
	Set flag allowing partially read file content to be put into the XDE document.

int	MemoryLimitMiB () const
	Return memory usage limit in MiB, -1 by default which means no limit.

void	SetMemoryLimitMiB (int theLimitMiB)
	Set memory usage limit in MiB; can be ignored by reader implementation!

const RWMesh_CoordinateSystemConverter &	CoordinateSystemConverter () const
	Return coordinate system converter.

void	SetCoordinateSystemConverter (const RWMesh_CoordinateSystemConverter &theConverter)
	Set coordinate system converter.

double	SystemLengthUnit () const
	Return the length unit to convert into while reading the file, defined as scale factor for m (meters); -1.0 by default, which means that NO conversion will be applied.

void	SetSystemLengthUnit (double theUnits)
	Set system length units to convert into while reading the file, defined as scale factor for m (meters).

bool	HasSystemCoordinateSystem () const
	Return TRUE if system coordinate system has been defined; FALSE by default.

const gp_Ax3 &	SystemCoordinateSystem () const
	Return system coordinate system; UNDEFINED by default, which means that no conversion will be done.

void	SetSystemCoordinateSystem (const gp_Ax3 &theCS)
	Set system origin coordinate system to perform conversion into during read.

void	SetSystemCoordinateSystem (RWMesh_CoordinateSystem theCS)
	Set system origin coordinate system to perform conversion into during read.

double	FileLengthUnit () const
	Return the length unit to convert from while reading the file, defined as scale factor for m (meters). Can be undefined (-1.0) if file format is unitless.

void	SetFileLengthUnit (double theUnits)
	Set (override) file length units to convert from while reading the file, defined as scale factor for m (meters).

bool	HasFileCoordinateSystem () const
	Return TRUE if file origin coordinate system has been defined.

const gp_Ax3 &	FileCoordinateSystem () const
	Return file origin coordinate system; can be UNDEFINED, which means no conversion will be done.

void	SetFileCoordinateSystem (const gp_Ax3 &theCS)
	Set (override) file origin coordinate system to perform conversion during read.

void	SetFileCoordinateSystem (RWMesh_CoordinateSystem theCS)
	Set (override) file origin coordinate system to perform conversion during read.

bool	Perform (const TCollection_AsciiString &theFile, const Message_ProgressRange &theProgress)
	Open stream and pass it to Perform method. The Document instance should be set beforehand.

bool	Perform (std::istream &theStream, const Message_ProgressRange &theProgress, const TCollection_AsciiString &theFile="")
	Read the data from specified file.

int	ExtraStatus () const
	Return extended status flags.

TopoDS_Shape	SingleShape () const
	Return result as a single shape.

const NCollection_IndexedMap< TCollection_AsciiString > &	ExternalFiles () const
	Return the list of complementary files - external references (textures, data, etc.).

const NCollection_IndexedDataMap< TCollection_AsciiString, TCollection_AsciiString > &	Metadata () const
	Return metadata map.

bool	ProbeHeader (const TCollection_AsciiString &theFile, const Message_ProgressRange &theProgress=Message_ProgressRange())
	Open stream and pass it to ProbeHeader method.

bool	ProbeHeader (std::istream &theStream, const TCollection_AsciiString &theFile="", const Message_ProgressRange &theProgress=Message_ProgressRange())
	Read the header data from specified file without reading entire model. The main purpose is collecting metadata and external references - for copying model into a new location, for example. Can be NOT implemented (unsupported by format / reader).

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor.

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing.

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter.

virtual	~Standard_Transient ()=default
	Destructor must be virtual.

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object.

bool	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type.

bool	IsInstance (const char *const theTypeName) const
	Returns a true value if this is an instance of TypeName.

bool	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.

bool	IsKind (const char *const theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.

int	GetRefCount () const noexcept
	Get the reference counter of this object.

void	IncrementRefCounter () noexcept
	Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations.

int	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement.

virtual void	Delete () const
	Memory deallocator for transient classes.

Protected Member Functions
bool	performMesh (std::istream &theStream, const TCollection_AsciiString &theFile, const Message_ProgressRange &theProgress, const bool theToProbe) override
	Read the mesh from specified file.

virtual occ::handle< RWObj_TriangulationReader >	createReaderContext ()
	Create reader context. Can be overridden by sub-class to read triangulation into application-specific data structures instead of Poly_Triangulation.

void	BindNamedShape (const TopoDS_Shape &theShape, const TCollection_AsciiString &theName, const RWObj_Material *theMaterial, const bool theIsRootShape) override

Protected Member Functions inherited from RWMesh_CafReader
virtual bool	perform (const TCollection_AsciiString &theFile, const Message_ProgressRange &theProgress, const bool theToProbe)
	Open stream and pass it to Perform method.

virtual bool	perform (std::istream &theStream, const TCollection_AsciiString &theFile, const Message_ProgressRange &theProgress, const bool theToProbe)
	Read the data from specified file. Default implementation calls performMesh() and fills XDE document from collected shapes.

virtual bool	performMesh (const TCollection_AsciiString &theFile, const Message_ProgressRange &theProgress, const bool theToProbe)
	Read the mesh from specified file.

virtual void	fillDocument ()
	Fill document with new root shapes.

bool	addShapeIntoDoc (CafDocumentTools &theTools, const TopoDS_Shape &theShape, const TDF_Label &theLabel, const TCollection_AsciiString &theParentName)
	Append new shape into the document (recursively).

bool	addSubShapeIntoDoc (CafDocumentTools &theTools, const TopoDS_Shape &theShape, const TDF_Label &theParentLabel)
	Append new sub-shape into the document (recursively).

void	setShapeName (const TDF_Label &theLabel, const TopAbs_ShapeEnum theShapeType, const TCollection_AsciiString &theName, const TDF_Label &theParentLabel, const TCollection_AsciiString &theParentName)
	Put name attribute onto the label.

void	setShapeStyle (const CafDocumentTools &theTools, const TDF_Label &theLabel, const XCAFPrs_Style &theStyle)
	Put color and material attributes onto the label.

void	setShapeNamedData (const CafDocumentTools &theTools, const TDF_Label &theLabel, const occ::handle< TDataStd_NamedData > &theNameData)
	Put name data (metadata) attribute onto the label.

void	generateNames (const TCollection_AsciiString &theFile, const int theRootLower, const bool theWithSubLabels)
	Generate names for root labels starting from specified index.

Protected Attributes
NCollection_DataMap< TCollection_AsciiString, occ::handle< XCAFDoc_VisMaterial > >	myObjMaterialMap

bool	myIsSinglePrecision
	flag for reading vertex data with single or double floating point precision

Protected Attributes inherited from RWMesh_CafReader
occ::handle< TDocStd_Document >	myXdeDoc
	target document

NCollection_IndexedDataMap< TCollection_AsciiString, TCollection_AsciiString >	myMetadata
	metadata map

NCollection_IndexedMap< TCollection_AsciiString >	myExternalFiles
	the list of complementary files - external references (textures, data, etc.)

TCollection_AsciiString	myRootPrefix
	root folder for generating root labels names

NCollection_Sequence< TopoDS_Shape >	myRootShapes
	sequence of result root shapes

NCollection_DataMap< TopoDS_Shape, RWMesh_NodeAttributes, TopTools_ShapeMapHasher >	myAttribMap
	map of per-shape attributes

RWMesh_CoordinateSystemConverter	myCoordSysConverter
	coordinate system converter

bool	myToFillDoc
	fill document from shape sequence

bool	myToFillIncomplete
	fill the document with partially retrieved data even if reader has failed with error

int	myMemoryLimitMiB
	memory usage limit

int	myExtraStatus
	extra status bitmask

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object.

Static Public Member Functions inherited from Standard_Transient
static constexpr const char *	get_type_name ()
	Returns a type descriptor about this object.

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class.

Static Protected Member Functions inherited from RWMesh_CafReader
static TCollection_AsciiString	shapeTypeToString (TopAbs_ShapeEnum theType)
	Return shape type as string.

Detailed Description

The OBJ mesh reader into XDE document.

Constructor & Destructor Documentation

◆ RWObj_CafReader()

RWObj_CafReader::RWObj_CafReader ( )

Empty constructor.

Member Function Documentation

◆ BindNamedShape()

void RWObj_CafReader::BindNamedShape	(	const TopoDS_Shape &	theShape,
		const TCollection_AsciiString &	theName,
		const RWObj_Material *	theMaterial,
		const bool	theIsRootShape )

overrideprotectedvirtual

Parameters

theShape	shape to register
theName	shape name
theMaterial	shape material
theIsRootShape	indicates that this is a root object (free shape)

Implements RWObj_IShapeReceiver.

◆ createReaderContext()

virtual occ::handle< RWObj_TriangulationReader > RWObj_CafReader::createReaderContext ( )

protectedvirtual

Create reader context. Can be overridden by sub-class to read triangulation into application-specific data structures instead of Poly_Triangulation.

◆ IsSinglePrecision()

bool RWObj_CafReader::IsSinglePrecision ( ) const

inline

Return single precision flag for reading vertex data (coordinates); FALSE by default.

◆ performMesh()

bool RWObj_CafReader::performMesh	(	std::istream &	theStream,
		const TCollection_AsciiString &	theFile,
		const Message_ProgressRange &	theProgress,
		const bool	theToProbe )

overrideprotectedvirtual

Read the mesh from specified file.

Implements RWMesh_CafReader.

◆ SetSinglePrecision()

void RWObj_CafReader::SetSinglePrecision ( bool theIsSinglePrecision )

inline

Setup single/double precision flag for reading vertex data (coordinates).

Field Documentation

◆ myIsSinglePrecision

bool RWObj_CafReader::myIsSinglePrecision

protected

flag for reading vertex data with single or double floating point precision

◆ myObjMaterialMap

NCollection_DataMap<TCollection_AsciiString, occ::handle<XCAFDoc_VisMaterial> > RWObj_CafReader::myObjMaterialMap