BOPAlgo_BuilderSolid Class Reference

Solid Builder is the algorithm for building solids from set of faces. The given faces should be non-intersecting, i.e. all coinciding parts of the faces should be shared among them. More...

#include <BOPAlgo_BuilderSolid.hxx>

Inheritance diagram for BOPAlgo_BuilderSolid:

Public Member Functions
Constructors
Empty constructor
	BOPAlgo_BuilderSolid ()
	Constructor with allocator.
	~BOPAlgo_BuilderSolid () override
	Constructor with allocator.
	BOPAlgo_BuilderSolid (const occ::handle< NCollection_BaseAllocator > &theAllocator)
	Constructor with allocator.
Performing the operation
Performs the construction of the solids from the given faces
void	Perform (const Message_ProgressRange &theRange=Message_ProgressRange()) override
	The main method to implement the operation Providing the range allows to enable Progress indicator User break functionalities.
Getting the bounding boxes of the created solids
For classification purposes the algorithm builds the bounding boxes for all created solids. This method returns the data map of solid - box pairs.
const NCollection_DataMap< TopoDS_Shape, Bnd_Box, TopTools_ShapeMapHasher > &	GetBoxesMap () const
Public Member Functions inherited from BOPAlgo_BuilderArea
void	SetContext (const occ::handle< IntTools_Context > &theContext)
	Sets the context for the algorithms.
const NCollection_List< TopoDS_Shape > &	Shapes () const
	Returns the input shapes.
void	SetShapes (const NCollection_List< TopoDS_Shape > &theLS)
	Sets the shapes for building areas.
const NCollection_List< TopoDS_Shape > &	Loops () const
	Returns the found loops.
const NCollection_List< TopoDS_Shape > &	Areas () const
	Returns the found areas.
void	SetAvoidInternalShapes (const bool theAvoidInternal)
	Defines the preventing of addition of internal parts into result. The default value is FALSE, i.e. the internal parts are added into result.
bool	IsAvoidInternalShapes () const
	Returns the AvoidInternalShapes flag.
Public Member Functions inherited from BOPAlgo_Options
	BOPAlgo_Options ()
	Empty constructor.
	BOPAlgo_Options (const occ::handle< NCollection_BaseAllocator > &theAllocator)
	Constructor with allocator.
virtual	~BOPAlgo_Options ()
	Destructor.
const occ::handle< NCollection_BaseAllocator > &	Allocator () const
	Returns allocator.
virtual void	Clear ()
	Clears all warnings and errors, and any data cached by the algorithm. User defined options are not cleared.
void	AddError (const occ::handle< Message_Alert > &theAlert)
	Adds the alert as error (fail).
void	AddWarning (const occ::handle< Message_Alert > &theAlert)
	Adds the alert as warning.
bool	HasErrors () const
	Returns true if algorithm has failed.
bool	HasError (const occ::handle< Standard_Type > &theType) const
	Returns true if algorithm has generated error of specified type.
bool	HasWarnings () const
	Returns true if algorithm has generated some warning alerts.
bool	HasWarning (const occ::handle< Standard_Type > &theType) const
	Returns true if algorithm has generated warning of specified type.
const occ::handle< Message_Report > &	GetReport () const
	Returns report collecting all errors and warnings.
void	DumpErrors (Standard_OStream &theOS) const
	Dumps the error status into the given stream.
void	DumpWarnings (Standard_OStream &theOS) const
	Dumps the warning statuses into the given stream.
void	ClearWarnings ()
	Clears the warnings of the algorithm.
void	SetFuzzyValue (const double theFuzz)
	Sets the additional tolerance.
double	FuzzyValue () const
	Returns the additional tolerance.
void	SetUseOBB (const bool theUseOBB)
	Enables/Disables the usage of OBB.
bool	UseOBB () const
	Returns the flag defining usage of OBB.
void	SetRunParallel (const bool theFlag)
	Set the flag of parallel processing if <theFlag> is true the parallel processing is switched on if <theFlag> is false the parallel processing is switched off.
bool	RunParallel () const
	Returns the flag of parallel processing.

Protected methods performing the operation
Collect the faces: with INTERNAL orientation; that are alone but given twice with different orientation. These faces will be put into the map myShapesToAvoid and will be avoided in shells construction, but will be classified later on.
void	PerformShapesToAvoid (const Message_ProgressRange &theRange) override
	Build all possible closed shells from the given faces. The method fills the following maps:
void	PerformLoops (const Message_ProgressRange &theRange) override
	Build all possible closed shells from the given faces. The method fills the following maps:
void	PerformAreas (const Message_ProgressRange &theRange) override
	Classifies the created shells on the Holes and Growths. Creates the solids from the Growths shells. Puts the Hole shells into the closest Growths solids.
void	PerformInternalShapes (const Message_ProgressRange &theRange) override
	Classifies the unused faces relatively the created solids. Puts the classified faces into the closest solids as internal shells. Warns the user about unclassified faces if any.

Additional Inherited Members
static bool	GetParallelMode ()
	Gets the global parallel mode.
static void	SetParallelMode (const bool theNewMode)
	Sets the global parallel mode.
Protected Member Functions inherited from BOPAlgo_BuilderArea
	BOPAlgo_BuilderArea ()
	~BOPAlgo_BuilderArea () override
	BOPAlgo_BuilderArea (const occ::handle< NCollection_BaseAllocator > &theAllocator)
Protected Member Functions inherited from BOPAlgo_Algo
	BOPAlgo_Algo ()
	Default constructor.
	~BOPAlgo_Algo () override
	BOPAlgo_Algo (const occ::handle< NCollection_BaseAllocator > &theAllocator)
virtual void	CheckData ()
	Checks input data.
virtual void	CheckResult ()
	Checks the obtained result.
void	analyzeProgress (const double theWhole, BOPAlgo_PISteps &theSteps) const
	Fills the values for constant operations - the operations having constant relative running time.
virtual void	fillPIConstants (const double theWhole, BOPAlgo_PISteps &theSteps) const
	Fills the values for constant operations - the operations having constant relative running time.
virtual void	fillPISteps (BOPAlgo_PISteps &theSteps) const
	Fills the values for the operations dependent on the inputs. Filled values may not be normalized to represent percentage of total running time. The values should just correlate to each other. E.g. if progress depends on the number of input shapes, the values may look like this: step1 = number_of_input_vertices; step2 = 2 * number_of_input_edges; step3 = 10 * number_of_input_faces. Normalization of these values will be done automatically in analyzeProgress() method.
bool	UserBreak (const Message_ProgressScope &thePS)
	Adds error to the report if the break signal was caught. Returns true in this case, false otherwise.
Protected Attributes inherited from BOPAlgo_BuilderArea
occ::handle< IntTools_Context >	myContext
NCollection_List< TopoDS_Shape >	myShapes
NCollection_List< TopoDS_Shape >	myLoops
NCollection_List< TopoDS_Shape >	myLoopsInternal
NCollection_List< TopoDS_Shape >	myAreas
NCollection_IndexedMap< TopoDS_Shape >	myShapesToAvoid
bool	myAvoidInternalShapes
occ::handle< NCollection_BaseAllocator >	myAllocator
	Enables/Disables the usage of OBB.
occ::handle< Message_Report >	myReport
	Enables/Disables the usage of OBB.
bool	myRunParallel
	Enables/Disables the usage of OBB.
double	myFuzzyValue
	Enables/Disables the usage of OBB.
bool	myUseOBB
	Enables/Disables the usage of OBB.

Detailed Description

Solid Builder is the algorithm for building solids from set of faces. The given faces should be non-intersecting, i.e. all coinciding parts of the faces should be shared among them.

The algorithm performs the following steps to build the solids:

1. Find:
   • faces orientated INTERNAL;
   • alone faces given twice with different orientation;
2. Build all possible closed shells from the rest of the faces (BOPAlgo_ShellSplitter is used for that);
3. Classify the obtained shells on the Holes and Growths;
4. Build solids from the Growth shells, put Hole shells into closest Growth solids;
5. Classify all unused faces relatively created solids and put them as internal shells into the closest solids;
6. Find all unclassified faces, i.e. faces outside of all created solids, make internal shells from them and put these shells into a warning.

It is possible to avoid all internal shells in the resulting solids. For that it is necessary to use the method SetAvoidInternalShapes(true) of the base class. In this case the steps 5 and 6 will not be performed at all.

The algorithm may return the following warnings:

• BOPAlgo_AlertShellSplitterFailed in case the ShellSplitter algorithm has failed;
• BOPAlgo_AlertSolidBuilderUnusedFaces in case there are some faces outside of created solids left.

Example of usage of the algorithm:

const NCollection_List<TopoDS_Shape>& aFaces = ...;     // Faces to build the solids
bool isAvoidInternals = ...;      // Flag which defines whether to create the
internal shells or not BOPAlgo_BuilderSolid aBS;                     // Solid Builder tool
aBS.SetShapes(aFaces);                        // Set the faces
aBS.SetAvoidInternalShapes(isAvoidInternals); // Set the AvoidInternalShapesFlag
aBS.Perform();                                // Perform the operation
if (!aBS.IsDone())                            // Check for the errors
{
  // error treatment
  Standard_SStream aSStream;
  aBS.DumpErrors(aSStream);
  return;
}
if (aBS.HasWarnings())                        // Check for the warnings
{
  // warnings treatment
  Standard_SStream aSStream;
  aBS.DumpWarnings(aSStream);
}
 
const NCollection_List<TopoDS_Shape>& aSolids = aBS.Areas(); // Obtaining the result solids

Constructor & Destructor Documentation

BOPAlgo_BuilderSolid() [1/2]

BOPAlgo_BuilderSolid::BOPAlgo_BuilderSolid

(

)

Constructor with allocator.

~BOPAlgo_BuilderSolid()

BOPAlgo_BuilderSolid::~BOPAlgo_BuilderSolid ( )

override

Constructor with allocator.

BOPAlgo_BuilderSolid() [2/2]

BOPAlgo_BuilderSolid::BOPAlgo_BuilderSolid

(

const occ::handle< NCollection_BaseAllocator > &

theAllocator

)

Constructor with allocator.

Member Function Documentation

GetBoxesMap()

const NCollection_DataMap< TopoDS_Shape, Bnd_Box, TopTools_ShapeMapHasher > & BOPAlgo_BuilderSolid::GetBoxesMap ( ) const

inline

Perform()

void BOPAlgo_BuilderSolid::Perform ( const Message_ProgressRange & theRange = Message_ProgressRange() )

overridevirtual

The main method to implement the operation Providing the range allows to enable Progress indicator User break functionalities.

Implements BOPAlgo_Algo.

PerformAreas()

void BOPAlgo_BuilderSolid::PerformAreas ( const Message_ProgressRange & theRange )

overrideprotectedvirtual

Classifies the created shells on the Holes and Growths. Creates the solids from the Growths shells. Puts the Hole shells into the closest Growths solids.

Implements BOPAlgo_BuilderArea.

PerformInternalShapes()

void BOPAlgo_BuilderSolid::PerformInternalShapes ( const Message_ProgressRange & theRange )

overrideprotectedvirtual

Classifies the unused faces relatively the created solids. Puts the classified faces into the closest solids as internal shells. Warns the user about unclassified faces if any.

Implements BOPAlgo_BuilderArea.

PerformLoops()

void BOPAlgo_BuilderSolid::PerformLoops ( const Message_ProgressRange & theRange )

overrideprotectedvirtual

Build all possible closed shells from the given faces. The method fills the following maps:

• myLoops - Created closed shells;
• myLoopsInternal - The shells created from unused faces.

Implements BOPAlgo_BuilderArea.

PerformShapesToAvoid()

void BOPAlgo_BuilderSolid::PerformShapesToAvoid ( const Message_ProgressRange & theRange )

overrideprotectedvirtual

Build all possible closed shells from the given faces. The method fills the following maps:

• myLoops - Created closed shells;
• myLoopsInternal - The shells created from unused faces.

Implements BOPAlgo_BuilderArea.

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

• BOPAlgo_BuilderSolid.hxx