#include <IfcGeometricRepresentationContextAutoImpl.h>

Inheritance diagram for OdIfc4x2::IfcGeometricRepresentationContext:

Public Member Functions
int	getCoordinateSpaceDimension () const

void	setCoordinateSpaceDimension (int CoordinateSpaceDimension)

double	getPrecision () const

void	setPrecision (double Precision)

IfcAxis2Placement	worldCoordinateSystem ()

const OdDAIObjectId &	getTrueNorth () const

void	setTrueNorth (const OdDAIObjectId &TrueNorth)

void	getInvHasSubContexts (OdDAIObjectIds &HasSubContexts) const

void	getInvHasCoordinateOperation (OdDAIObjectIds &HasCoordinateOperation) const

	IfcGeometricRepresentationContext ()

virtual OdResult	inFields (OdDAI::OdSpfFilerBase *rdFiler) override

virtual OdResult	outFields (OdDAI::OdSpfFilerBase *wrFiler) override

virtual OdDAI::Entity *	getInstanceType () const override

virtual OdRxValue	getAttr (const char *attrName) const override

virtual void	unsetAttr (const char *explicitAttrName) override

virtual bool	testAttr (const char *explicitAttrName) const override

virtual bool	putAttr (const char *explicitAttrName, const OdRxValue &val) override

virtual bool	isKindOf (OdIfc::OdIfcEntityType entityType) const override

virtual OdIfc::OdIfcEntityType	type () const override

virtual OdRxValue	getAttr (const OdIfc::OdIfcAttribute attrDef) const override

virtual void	unsetAttr (const OdIfc::OdIfcAttribute explicitAttrDef) override

virtual bool	testAttr (const OdIfc::OdIfcAttribute explicitAttrDef) const override

virtual bool	putAttr (const OdIfc::OdIfcAttribute explicitAttrDef, const OdRxValue &val) override

Public Member Functions inherited from OdIfc4x2::IfcRepresentationContext
const OdAnsiString &	getContextIdentifier () const

void	setContextIdentifier (const OdAnsiString &ContextIdentifier)

const OdAnsiString &	getContextType () const

void	setContextType (const OdAnsiString &ContextType)

void	getInvRepresentationsInContext (OdDAIObjectIds &RepresentationsInContext) const

	IfcRepresentationContext ()

Public Member Functions inherited from OdIfc4x2::OdIfc4x2Instance
void	setInverseCounterParts () override

Public Member Functions inherited from OdIfc::OdIfcInstance
	ODRX_DECLARE_MEMBERS (OdIfcInstance)

	OdIfcInstance ()

	~OdIfcInstance ()

bool	isInstanceOf (OdIfcEntityType entityType) const

IfcOpResult	resolved ()

void	resolve (IfcOpResult resolved, void *resPtr)

void	unresolve ()

virtual void	setGsNode (OdGsCache *pGsNode)

virtual OdGsCache *	gsNode () const

virtual OdUInt32	subSetAttributes (OdGiDrawableTraits *traits) const

virtual bool	subWorldDraw (OdGiWorldDraw *wd) const

virtual OdDbStub *	ownerId () const

Protected Attributes
int	m_CoordinateSpaceDimension

double	m_Precision

OdDAI::Select	m_WorldCoordinateSystem

OdDAIObjectId	m_TrueNorth

Protected Attributes inherited from OdIfc4x2::IfcRepresentationContext
OdAnsiString	m_ContextIdentifier

OdAnsiString	m_ContextType

Protected Attributes inherited from OdIfc::OdIfcInstance
void *	m_resPtr

IfcOpResult	m_resolved

Friends
class	IfcGeometricRepresentationSubContext

class	IfcCoordinateOperation

Additional Inherited Members
Static Public Member Functions inherited from OdIfc::OdIfcInstance
static const OdGePoint3d *	asPoint3d (const OdIfcInstance *inst)

static const OdGePoint2d *	asPoint2d (const OdIfcInstance *inst)

static const OdGeVector3d *	asVector3d (const OdIfcInstance *inst)

static const OdGeVector2d *	asVector2d (const OdIfcInstance *inst)

static const OdGeMatrix2d *	asMatrix2d (const OdIfcInstance *inst)

static const OdGeMatrix3d *	asMatrix3d (const OdIfcInstance *inst)

static OdIfcCompoundPtr	asCompound (OdSmartPtr< OdIfcInstance > inst)

static const OdCmEntityColor *	asRgbColor (const OdIfcInstance *inst)

Detailed Description

The IfcGeometricRepresentationContext defines the context that applies to several shape representations of products within a project. It defines the type of the context in which the shape representation is defined, and the numeric precision applicable to the geometric representation items defined in this context. In addition it can be used to offset the project coordinate system from a global point of origin, using the WorldCoordinateSystem attribute. The main representation context may also provide the true north direction, see on the image below:

The TrueNorth attribute should be provided, if the y axis of the WorldCoordinateSystem does not point to the global northing. Direction of the true north, or geographic northing direction, relative to the underlying project coordinate system as established by the attribute WorldCoordinateSystem. It is given by a 2 dimensional direction within the xy-plane of the project coordinate system. If not present, it defaults to [0.,1.] - i.e. the positive Y axis of the project coordinate system equals to the geographic northing direction. The direction is provided within project coordinate system and identifies the true north direction.

\changes

IFC4 changes: Type of the Precision attribute changed from "real" to "IfcReal".

Definition at line 58 of file Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h.

Constructor & Destructor Documentation

◆ IfcGeometricRepresentationContext()

OdIfc4x2::IfcGeometricRepresentationContext::IfcGeometricRepresentationContext ( )

Default constructor for the IfcGeometricRepresentationContext class.

Member Function Documentation

◆ getAttr() [1/2]

virtual OdRxValue OdIfc4x2::IfcGeometricRepresentationContext::getAttr ( const char * attrName ) const

overridevirtual

Returns an attribute value for the specified attribute name.

Parameters

attrName [in] Name of an attribute to query.

Returns: OdRxValue object that represents a generic variant type value.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ getAttr() [2/2]

virtual OdRxValue OdIfc4x2::IfcGeometricRepresentationContext::getAttr ( const OdIfc::OdIfcAttribute attrDef ) const

overridevirtual

Returns an attribute value for the specified attribute definition.

Parameters

attrDef [in] Attribute definition to query.

Returns: OdRxValue object that represents a generic variant type value.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ getCoordinateSpaceDimension()

int OdIfc4x2::IfcGeometricRepresentationContext::getCoordinateSpaceDimension ( ) const

Returns the value of CoordinateSpaceDimension attribute. This attribute represents the integer dimension count of the coordinate space modeled in a geometric representation context.

Returns: Returns the value of CoordinateSpaceDimension attribute.

◆ getInstanceType()

virtual OdDAI::Entity * OdIfc4x2::IfcGeometricRepresentationContext::getInstanceType ( ) const

overridevirtual

Returns a type of a class instance.

Returns: Pointer to the <exref target=https://docs.opendesign.com/tkernel_api_cpp/OdDAI__Entity.html>>OdDAI::Entity</exref> type that determines an entity definition within a schema.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ getInvHasCoordinateOperation()

void OdIfc4x2::IfcGeometricRepresentationContext::getInvHasCoordinateOperation ( OdDAIObjectIds & HasCoordinateOperation ) const

Returns the value of HasCoordinateOperation attribute. This attribute represents an instance that is used for conversion between coordinate systems. It refers to a coordinate operation (IfcCoordinateOperation instance) between a geographic map coordinate reference system, and the engineering coordinate system of this construction project. If there is more than one IfcGeometricRepresentationContext provided to the IfcProject then all contexts have an identical instance of IfcCoordinateOperation as HasCoordinateOperation referring to the same instance of IfcCoordinateReferenceSystem.

Parameters

HasCoordinateOperation [out] Receives the value of HasCoordinateOperation attribute.

◆ getInvHasSubContexts()

void OdIfc4x2::IfcGeometricRepresentationContext::getInvHasSubContexts ( OdDAIObjectIds & HasSubContexts ) const

Returns the value of HasSubContexts attribute. This attribute represents the set of IfcGeometricRepresentationSubContexts that refer to this IfcGeometricRepresentationContext.

Parameters

HasSubContexts [out] Receives the value of HasSubContexts attribute.

◆ getPrecision()

double OdIfc4x2::IfcGeometricRepresentationContext::getPrecision ( ) const

Returns the value of Precision attribute. This attribute represents value of the model precision for geometric models. It is a double value (REAL), typically in 1E-5 to 1E-8 range. It indicates the tolerance under which two given points are assumed to be identical. The value can be used e.g. to sets the maximum distance from an edge curve to the underlying face surface in brep models.

Returns: Returns the value of Precision attribute.

◆ getTrueNorth()

const OdDAIObjectId & OdIfc4x2::IfcGeometricRepresentationContext::getTrueNorth ( ) const

Returns the value of TrueNorth attribute. This attribute represents direction of the true north, or geographic northing direction, relative to the underlying project coordinate system. It is given by a 2 dimensional direction within the xy-plane of the project coordinate system. If not present, it defaults to 0. 1., meaning that the positive Y axis of the project coordinate system equals the geographic northing direction.

Returns: Returns the value of TrueNorth attribute.

Remarks: If a geographic placement is provided using IfcMapConversion then the true north is for information only. In case of inconsistency, the value provided with IfcMapConversion takes precedence.

◆ inFields()

virtual OdResult OdIfc4x2::IfcGeometricRepresentationContext::inFields ( OdDAI::OdSpfFilerBase * rdFiler )

overridevirtual

Reads object's data from the specified filer.

Parameters

rdFiler [in] Pointer to a filer from which to read the data.

Returns: A value of OdResult type that contains the result of the method execution.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ isKindOf()

virtual bool OdIfc4x2::IfcGeometricRepresentationContext::isKindOf ( OdIfc::OdIfcEntityType entityType ) const

overridevirtual

Checks whether the specified instance is the object derived from or belongs to this class.

Parameters

entityType [in] Entity to check.

Returns: true if the specified instance is the object derived from or belongs to this class, false otherwise.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ outFields()

virtual OdResult OdIfc4x2::IfcGeometricRepresentationContext::outFields ( OdDAI::OdSpfFilerBase * wrFiler )

overridevirtual

Writes object's data the the specified filer.

Parameters

wrFiler [in] Pointer to a filer to which to write the data.

Returns: A value of OdResult type that contains the result of the method execution.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ putAttr() [1/2]

virtual bool OdIfc4x2::IfcGeometricRepresentationContext::putAttr	(	const char *	explicitAttrName,
		const OdRxValue &	val )

overridevirtual

Sets the specified attribute with a given value.

Parameters

explicitAttrName	[in] Explicit name of the attribute to set.
val	[in] Value to set.

Returns: true if the value is successfully set for the specified attribute, false otherwise.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ putAttr() [2/2]

virtual bool OdIfc4x2::IfcGeometricRepresentationContext::putAttr	(	const OdIfc::OdIfcAttribute	explicitAttrDef,
		const OdRxValue &	val )

overridevirtual

Sets the specified attribute with a given value.

Parameters

explicitAttrDef	[in] Explicit attribute definition to set.
val	[in] Value to set.

Returns: true if the value is successfully set for the specified attribute, false otherwise.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ setCoordinateSpaceDimension()

void OdIfc4x2::IfcGeometricRepresentationContext::setCoordinateSpaceDimension ( int CoordinateSpaceDimension )

Sets the value of CoordinateSpaceDimension attribute. This attribute represents the integer dimension count of the coordinate space modeled in a geometric representation context.

Parameters

CoordinateSpaceDimension [in] Coordinate space dimension to set.

◆ setPrecision()

void OdIfc4x2::IfcGeometricRepresentationContext::setPrecision ( double Precision )

Sets the value of Precision attribute. This attribute represents value of the model precision for geometric models. It is a double value (REAL), typically in 1E-5 to 1E-8 range. It indicates the tolerance under which two given points are assumed to be identical. The value can be used e.g. to sets the maximum distance from an edge curve to the underlying face surface in brep models.

Parameters

Precision [in] Precision to set.

◆ setTrueNorth()

void OdIfc4x2::IfcGeometricRepresentationContext::setTrueNorth ( const OdDAIObjectId & TrueNorth )

Sets the value of TrueNorth attribute. This attribute represents direction of the true north, or geographic northing direction, relative to the underlying project coordinate system. It is given by a 2 dimensional direction within the xy-plane of the project coordinate system. If not present, it defaults to 0. 1., meaning that the positive Y axis of the project coordinate system equals the geographic northing direction.

Parameters

TrueNorth [in] TrueNorth to set.

Remarks: If a geographic placement is provided using IfcMapConversion then the true north is for information only. In case of inconsistency, the value provided with IfcMapConversion takes precedence.

◆ testAttr() [1/2]

virtual bool OdIfc4x2::IfcGeometricRepresentationContext::testAttr ( const char * explicitAttrName ) const

overridevirtual

Checks whether the specified attribute is set.

Parameters

explicitAttrName [in] Explicit name of the attribute to test.

Returns: true if the specified attribute is set, false otherwise.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ testAttr() [2/2]

virtual bool OdIfc4x2::IfcGeometricRepresentationContext::testAttr ( const OdIfc::OdIfcAttribute explicitAttrDef ) const

overridevirtual

Checks whether the specified attribute is set.

Parameters

explicitAttrDef [in] Attribute definition to test.

Returns: true if the specified attribute is set, false otherwise.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ type()

virtual OdIfc::OdIfcEntityType OdIfc4x2::IfcGeometricRepresentationContext::type ( ) const

overridevirtual

Returns the type of this entity.

Returns: A value of the <exref target=https://docs.opendesign.com/tkernel_api_cpp/OdIfc__OdIfcEntityType.html>>OdIfc::OdIfcEntityType</exref> type that represents type of this entity.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ unsetAttr() [1/2]

virtual void OdIfc4x2::IfcGeometricRepresentationContext::unsetAttr ( const char * explicitAttrName )

overridevirtual

Resets a value for the specified attribute.

Parameters

explicitAttrName [in] Explicit name of the attribute to reset.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ unsetAttr() [2/2]

virtual void OdIfc4x2::IfcGeometricRepresentationContext::unsetAttr ( const OdIfc::OdIfcAttribute explicitAttrDef )

overridevirtual

Resets a value for the specified attribute.

Parameters

explicitAttrDef [in] Explicit definition that represents an attribute to reset.

Reimplemented from OdIfc4x2::IfcRepresentationContext.

Reimplemented in OdIfc4x2::IfcGeometricRepresentationSubContext.

◆ worldCoordinateSystem()

IfcAxis2Placement OdIfc4x2::IfcGeometricRepresentationContext::worldCoordinateSystem ( )

Returns the value of WorldCoordinateSystem attribute. This attribute represents establishment of the engineering coordinate system (often referred to as the world coordinate system in CAD) for all representation contexts used by the project.

Returns: Returns the value of WorldCoordinateSystem attribute.

Remarks: It can be used to provide better numeric stability if the placement of the building(s) is far away from the origin. In most cases however it would be set to origin: (0.,0.,0.) and directions x(1.,0.,0.), y(0.,1.,0.), z(0.,0.,1.). If an geographic placement is provided using IfcMapConversion then the WorldCoordinateSystem atttibute is used to define the offset between the zero point of the local engineering coordinate system and the geographic reference point to which the IfcMapConversion offset relates. Preferably, both points (also called "project base point" and "survey point") should be coincidental. However it is possible to offset the geographic reference point from the local zero point.

Friends And Related Symbol Documentation

◆ IfcCoordinateOperation

friend class IfcCoordinateOperation

friend

Definition at line 283 of file Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h.

◆ IfcGeometricRepresentationSubContext

friend class IfcGeometricRepresentationSubContext

friend

Definition at line 282 of file Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h.

Member Data Documentation

◆ m_CoordinateSpaceDimension

int OdIfc4x2::IfcGeometricRepresentationContext::m_CoordinateSpaceDimension

protected

Definition at line 276 of file Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h.

◆ m_Precision

double OdIfc4x2::IfcGeometricRepresentationContext::m_Precision

protected

Definition at line 277 of file Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h.

◆ m_TrueNorth

OdDAIObjectId OdIfc4x2::IfcGeometricRepresentationContext::m_TrueNorth

protected

Definition at line 279 of file Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h.

◆ m_WorldCoordinateSystem

OdDAI::Select OdIfc4x2::IfcGeometricRepresentationContext::m_WorldCoordinateSystem

protected

Definition at line 278 of file Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h.

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

Ifc4x2/IfcGeometricRepresentationContextAutoImpl.h

Public Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ IfcGeometricRepresentationContext()

Member Function Documentation

◆ getAttr() [1/2]

◆ getAttr() [2/2]

◆ getCoordinateSpaceDimension()

◆ getInstanceType()

◆ getInvHasCoordinateOperation()

◆ getInvHasSubContexts()

◆ getPrecision()

◆ getTrueNorth()

◆ inFields()

◆ isKindOf()

◆ outFields()

◆ putAttr() [1/2]

◆ putAttr() [2/2]

◆ setCoordinateSpaceDimension()

◆ setPrecision()

◆ setTrueNorth()

◆ testAttr() [1/2]

◆ testAttr() [2/2]

◆ type()

◆ unsetAttr() [1/2]

◆ unsetAttr() [2/2]

◆ worldCoordinateSystem()

Friends And Related Symbol Documentation

◆ IfcCoordinateOperation

◆ IfcGeometricRepresentationSubContext

Member Data Documentation

◆ m_CoordinateSpaceDimension

◆ m_Precision

◆ m_TrueNorth

◆ m_WorldCoordinateSystem