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
	BOPAlgo_BuilderSolid ()
	Empty constructor.
virtual	~BOPAlgo_BuilderSolid ()
	Empty constructor.
	BOPAlgo_BuilderSolid (const Handle< NCollection_BaseAllocator > &theAllocator)
	Constructor with allocator.
Performing the operation
virtual void	Perform (const Message_ProgressRange &theRange=Message_ProgressRange()) override
	Performs the construction of the solids from the given faces.
Getting the bounding boxes of the created solids
const TopTools_DataMapOfShapeBox &	GetBoxesMap () const
	For classification purposes the algorithm builds the bounding boxes for all created solids. This method returns the data map of solid - box pairs.
Public Member Functions inherited from BOPAlgo_BuilderArea
void	SetContext (const Handle< IntTools_Context > &theContext)
	Sets the context for the algorithms.
const TopTools_ListOfShape &	Shapes () const
	Returns the input shapes.
void	SetShapes (const TopTools_ListOfShape &theLS)
	Sets the shapes for building areas.
const TopTools_ListOfShape &	Loops () const
	Returns the found loops.
const TopTools_ListOfShape &	Areas () const
	Returns the found areas.
void	SetAvoidInternalShapes (const Standard_Boolean 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.
Standard_Boolean	IsAvoidInternalShapes () const
	Returns the AvoidInternalShapes flag.
Public Member Functions inherited from BOPAlgo_Options
	BOPAlgo_Options ()
	Empty constructor.
	BOPAlgo_Options (const Handle< NCollection_BaseAllocator > &theAllocator)
	Constructor with allocator.
virtual	~BOPAlgo_Options ()
	Destructor.
const 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 Handle< Message_Alert > &theAlert)
	Adds the alert as error (fail)
void	AddWarning (const Handle< Message_Alert > &theAlert)
	Adds the alert as warning.
Standard_Boolean	HasErrors () const
	Returns true if algorithm has failed.
Standard_Boolean	HasError (const Handle< Standard_Type > &theType) const
	Returns true if algorithm has generated error of specified type.
Standard_Boolean	HasWarnings () const
	Returns true if algorithm has generated some warning alerts.
Standard_Boolean	HasWarning (const Handle< Standard_Type > &theType) const
	Returns true if algorithm has generated warning of specified type.
const 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 Standard_Real theFuzz)
	Sets the additional tolerance.
Standard_Real	FuzzyValue () const
	Returns the additional tolerance.
void	SetUseOBB (const Standard_Boolean theUseOBB)
	Enables/Disables the usage of OBB.
Standard_Boolean	UseOBB () const
	Returns the flag defining usage of OBB.
void	SetRunParallel (const Standard_Boolean 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.
Standard_Boolean	RunParallel () const
	Returns the flag of parallel processing.

Protected methods performing the operation
virtual void	PerformShapesToAvoid (const Message_ProgressRange &theRange) override
	Collect the faces:
virtual void	PerformLoops (const Message_ProgressRange &theRange) override
	Build all possible closed shells from the given faces. The method fills the following maps:
virtual 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.
virtual 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 Public Member Functions inherited from BOPAlgo_Options
static Standard_Boolean	GetParallelMode ()
	Gets the global parallel mode.
static void	SetParallelMode (const Standard_Boolean theNewMode)
	Sets the global parallel mode.
Protected Member Functions inherited from BOPAlgo_BuilderArea
	BOPAlgo_BuilderArea ()
virtual	~BOPAlgo_BuilderArea ()
	BOPAlgo_BuilderArea (const Handle< NCollection_BaseAllocator > &theAllocator)
Protected Member Functions inherited from BOPAlgo_Algo
	BOPAlgo_Algo ()
	Default constructor.
virtual	~BOPAlgo_Algo ()
	BOPAlgo_Algo (const Handle< NCollection_BaseAllocator > &theAllocator)
virtual void	CheckData ()
	Checks input data.
virtual void	CheckResult ()
	Checks the obtained result.
void	analyzeProgress (const Standard_Real theWhole, BOPAlgo_PISteps &theSteps) const
	Analyze progress steps of the whole operation.
virtual void	fillPIConstants (const Standard_Real 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.
Protected Member Functions inherited from BOPAlgo_Options
Standard_Boolean	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
Handle< IntTools_Context >	myContext
TopTools_ListOfShape	myShapes
TopTools_ListOfShape	myLoops
TopTools_ListOfShape	myLoopsInternal
TopTools_ListOfShape	myAreas
TopTools_IndexedMapOfOrientedShape	myShapesToAvoid
Standard_Boolean	myAvoidInternalShapes
Protected Attributes inherited from BOPAlgo_Options
Handle< NCollection_BaseAllocator >	myAllocator
	Enables/Disables the usage of OBB.
Handle< Message_Report >	myReport
	Enables/Disables the usage of OBB.
Standard_Boolean	myRunParallel
	Enables/Disables the usage of OBB.
Standard_Real	myFuzzyValue
	Enables/Disables the usage of OBB.
Standard_Boolean	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 TopTools_ListOfShape& aFaces = ...;     // Faces to build the solids
Standard_Boolean 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 TopTools_ListOfShape& aSolids = aBS.Areas(); // Obtaining the result solids

Constructor & Destructor Documentation

BOPAlgo_BuilderSolid() [1/2]

BOPAlgo_BuilderSolid::BOPAlgo_BuilderSolid

(

)

Empty constructor.

~BOPAlgo_BuilderSolid()

virtual BOPAlgo_BuilderSolid::~BOPAlgo_BuilderSolid ( )

virtual

Empty constructor.

BOPAlgo_BuilderSolid() [2/2]

BOPAlgo_BuilderSolid::BOPAlgo_BuilderSolid

(

const Handle< NCollection_BaseAllocator > &

theAllocator

)

Constructor with allocator.

Member Function Documentation

GetBoxesMap()

const TopTools_DataMapOfShapeBox & BOPAlgo_BuilderSolid::GetBoxesMap ( ) const

inline

For classification purposes the algorithm builds the bounding boxes for all created solids. This method returns the data map of solid - box pairs.

Perform()

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

overridevirtual

Performs the construction of the solids from the given faces.

Implements BOPAlgo_Algo.

PerformAreas()

virtual 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()

virtual 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()

virtual 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()

virtual void BOPAlgo_BuilderSolid::PerformShapesToAvoid ( const Message_ProgressRange &  theRange )

overrideprotectedvirtual

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.

Implements BOPAlgo_BuilderArea.

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

• BOPAlgo_BuilderSolid.hxx