ShapeAnalysis_Wire Class Reference

This class provides analysis of a wire to be compliant to CAS.CADE requirements. More...

#include <ShapeAnalysis_Wire.hxx>

Inheritance diagram for ShapeAnalysis_Wire:

Public Member Functions
	ShapeAnalysis_Wire ()
	Empty constructor. More...
	ShapeAnalysis_Wire (const TopoDS_Wire &wire, const TopoDS_Face &face, const Standard_Real precision)
	Creates object with standard TopoDS_Wire, face and precision. More...
	ShapeAnalysis_Wire (const Handle< ShapeExtend_WireData > &sbwd, const TopoDS_Face &face, const Standard_Real precision)
	Creates the object with WireData object, face and precision. More...
void	Init (const TopoDS_Wire &wire, const TopoDS_Face &face, const Standard_Real precision)
	Initializes the object with standard TopoDS_Wire, face and precision. More...
void	Init (const Handle< ShapeExtend_WireData > &sbwd, const TopoDS_Face &face, const Standard_Real precision)
	Initializes the object with WireData object, face and precision. More...
void	Load (const TopoDS_Wire &wire)
	Loads the object with standard TopoDS_Wire. More...
void	Load (const Handle< ShapeExtend_WireData > &sbwd)
	Loads the object with WireData object. More...
void	SetFace (const TopoDS_Face &face)
	Loads the face the wire lies on. More...
void	SetSurface (const Handle< Geom_Surface > &surface)
	Loads the surface the wire lies on. More...
void	SetSurface (const Handle< Geom_Surface > &surface, const TopLoc_Location &location)
	Loads the surface the wire lies on. More...
void	SetPrecision (const Standard_Real precision)
void	ClearStatuses ()
	Unsets all the status and distance fields wire, face and precision are not cleared. More...
Standard_Boolean	IsLoaded () const
	Returns True if wire is loaded and has number of edges >0. More...
Standard_Boolean	IsReady () const
	Returns True if IsLoaded and underlying face is not null. More...
Standard_Real	Precision () const
	Returns the value of precision. More...
const Handle< ShapeExtend_WireData > &	WireData () const
	Returns wire object being analyzed. More...
Standard_Integer	NbEdges () const
	Returns the number of edges in the wire, or 0 if it is not loaded. More...
const TopoDS_Face &	Face () const
	Returns the working face. More...
const Handle< ShapeAnalysis_Surface > &	Surface () const
	Returns the working surface. More...
Standard_Boolean	Perform ()
	Performs all the checks in the following order : CheckOrder, CheckSmall, CheckConnected, CheckEdgeCurves, CheckDegenerated, CheckSelfIntersection, CheckLacking, CheckClosed Returns: True if at least one method returned True; For deeper analysis use Status...(status) methods. More...
Standard_Boolean	CheckOrder (const Standard_Boolean isClosed=Standard_True, const Standard_Boolean mode3d=Standard_True)
	Calls CheckOrder and returns False if wire is already ordered (tail-to-head), True otherwise Flag <isClosed> defines if the wire is closed or not Flag <mode3d> defines which mode is used (3d or 2d) More...
Standard_Boolean	CheckConnected (const Standard_Real prec=0.0)
	Calls to CheckConnected for each edge Returns: True if at least one pair of disconnected edges (not sharing the same vertex) was detected. More...
Standard_Boolean	CheckSmall (const Standard_Real precsmall=0.0)
	Calls to CheckSmall for each edge Returns: True if at least one small edge was detected. More...
Standard_Boolean	CheckEdgeCurves ()
	Checks edges geometry (consistency of 2d and 3d senses, adjasment of curves to the vertices, etc.). The order of the checks : Call ShapeAnalysis_Wire to check: ShapeAnalysis_Edge::CheckCurve3dWithPCurve (1), ShapeAnalysis_Edge::CheckVertcesWithPCurve (2), ShapeAnalysis_Edge::CheckVertcesWithCurve3d (3), CheckSeam (4) Additional: CheckGap3d (5), CheckGap2d (6), ShapeAnalysis_Edge::CheckSameParameter (7) Returns: True if at least one check returned True Remark: The numbers in brackets show with what DONEi or FAILi the status can be queried. More...
Standard_Boolean	CheckDegenerated ()
	Calls to CheckDegenerated for each edge Returns: True if at least one incorrect degenerated edge was detected. More...
Standard_Boolean	CheckClosed (const Standard_Real prec=0.0)
	Checks if wire is closed, performs CheckConnected, CheckDegenerated and CheckLacking for the first and the last edges Returns: True if at least one check returned True Status: FAIL1 or DONE1: see CheckConnected FAIL2 or DONE2: see CheckDegenerated. More...
Standard_Boolean	CheckSelfIntersection ()
	Checks self-intersection of the wire (considering pcurves) Looks for self-intersecting edges and each pair of intersecting edges. Warning: It does not check each edge with any other one (only each two adjacent edges) The order of the checks : CheckSelfIntersectingEdge, CheckIntersectingEdges Returns: True if at least one check returned True Status: FAIL1 or DONE1 - see CheckSelfIntersectingEdge FAIL2 or DONE2 - see CheckIntersectingEdges. More...
Standard_Boolean	CheckLacking ()
	Calls to CheckLacking for each edge Returns: True if at least one lacking edge was detected. More...
Standard_Boolean	CheckGaps3d ()
Standard_Boolean	CheckGaps2d ()
Standard_Boolean	CheckCurveGaps ()
Standard_Boolean	CheckOrder (ShapeAnalysis_WireOrder &sawo, const Standard_Boolean isClosed=Standard_True, const Standard_Boolean mode3d=Standard_True)
	Analyzes the order of the edges in the wire, uses class WireOrder for that purpose. Flag <isClosed> defines if the wire is closed or not Flag <mode3d> defines which mode is used (3d or 2d) Returns False if wire is already ordered (tail-to-head), True otherwise. Use returned WireOrder object for deeper analysis. Status: OK : the same edges orientation, the same edges sequence DONE1: the same edges orientation, not the same edges sequence DONE2: as DONE1 and gaps more than myPrecision DONE3: not the same edges orientation (some need to be reversed) DONE4: as DONE3 and gaps more than myPrecision FAIL : algorithm failed (could not detect order) More...
Standard_Boolean	CheckConnected (const Standard_Integer num, const Standard_Real prec=0.0)
	Checks connected edges (num-th and preceding). Tests with starting preci from <SBWD> or with <prec> if it is greater. Considers Vertices. Returns: False if edges are connected by the common vertex, else True Status : OK : Vertices (end of num-1 th edge and start on num-th one) are already the same DONE1 : Absolutely confused (gp::Resolution) DONE2 : Confused at starting <preci> from <SBWD> DONE3 : Confused at <prec> but not <preci> FAIL1 : Not confused FAIL2 : Not confused but confused with <preci> if reverse num-th edge. More...
Standard_Boolean	CheckSmall (const Standard_Integer num, const Standard_Real precsmall=0.0)
	Checks if an edge has a length not greater than myPreci or precsmall (if it is smaller) Returns: False if its length is greater than precision Status: OK : edge is not small or degenerated DONE1: edge is small, vertices are the same DONE2: edge is small, vertices are not the same FAIL : no 3d curve and pcurve. More...
Standard_Boolean	CheckSeam (const Standard_Integer num, Handle< Geom2d_Curve > &C1, Handle< Geom2d_Curve > &C2, Standard_Real &cf, Standard_Real &cl)
	Checks if a seam pcurves are correct oriented Returns: False (status OK) if given edge is not a seam or if it is OK C1 - current pcurve for FORWARD edge, C2 - current pcurve for REVERSED edge (if returns True they should be swapped for the seam), cf, cl - first and last parameters on curves Status: OK : Pcurves are correct or edge is not seam DONE : Seam pcurves should be swapped. More...
Standard_Boolean	CheckSeam (const Standard_Integer num)
	Checks if a seam pcurves are correct oriented See previous functions for details. More...
Standard_Boolean	CheckDegenerated (const Standard_Integer num, gp_Pnt2d &dgnr1, gp_Pnt2d &dgnr2)
	Checks for degenerated edge between two adjacent ones. Fills parameters dgnr1 and dgnr2 with points in parametric space that correspond to the singularity (either gap that needs to be filled by degenerated edge or that already filled) Returns: False if no singularity or edge is already degenerated, otherwise True Status: OK : No surface singularity, or edge is already degenerated DONE1: Degenerated edge should be inserted (gap in 2D) DONE2: Edge <num> should be made degenerated (recompute pcurve and set the flag) FAIL1: One of edges neighbouring to degenerated one has no pcurve FAIL2: Edge marked as degenerated and has no pcurve but singularity is not detected. More...
Standard_Boolean	CheckDegenerated (const Standard_Integer num)
	Checks for degenerated edge between two adjacent ones. Remark : Calls previous function Status : See the function above for details. More...
Standard_Boolean	CheckGap3d (const Standard_Integer num=0)
	Checks gap between edges in 3D (3d curves). Checks the distance between ends of 3d curves of the num-th and preceding edge. The distance can be queried by MinDistance3d. More...
Standard_Boolean	CheckGap2d (const Standard_Integer num=0)
	Checks gap between edges in 2D (pcurves). Checks the distance between ends of pcurves of the num-th and preceding edge. The distance can be queried by MinDistance2d. More...
Standard_Boolean	CheckCurveGap (const Standard_Integer num=0)
	Checks gap between points on 3D curve and points on surface generated by pcurve of the num-th edge. The distance can be queried by MinDistance3d. More...
Standard_Boolean	CheckSelfIntersectingEdge (const Standard_Integer num, IntRes2d_SequenceOfIntersectionPoint &points2d, TColgp_SequenceOfPnt &points3d)
	Checks if num-th edge is self-intersecting. Self-intersection is reported only if intersection point lies outside of both end vertices of the edge. Returns: True if edge is self-intersecting. If returns True it also fills the sequences of intersection points and corresponding 3d points (only that are not enclosed by a vertices) Status: FAIL1 : No pcurve FAIL2 : No vertices DONE1 : Self-intersection found. More...
Standard_Boolean	CheckSelfIntersectingEdge (const Standard_Integer num)
Standard_Boolean	CheckIntersectingEdges (const Standard_Integer num, IntRes2d_SequenceOfIntersectionPoint &points2d, TColgp_SequenceOfPnt &points3d, TColStd_SequenceOfReal &errors)
	Checks two adjacent edges for intersecting. Intersection is reported only if intersection point is not enclosed by the common end vertex of the edges. Returns: True if intersection is found. If returns True it also fills the sequences of intersection points, corresponding 3d points, and errors for them (half-distances between intersection points in 3d calculated from one and from another edge) Status: FAIL1 : No pcurve FAIL2 : No vertices DONE1 : Self-intersection found. More...
Standard_Boolean	CheckIntersectingEdges (const Standard_Integer num)
	Checks two adjacent edges for intersecting. Remark : Calls the previous method Status : See the function above for details. More...
Standard_Boolean	CheckIntersectingEdges (const Standard_Integer num1, const Standard_Integer num2, IntRes2d_SequenceOfIntersectionPoint &points2d, TColgp_SequenceOfPnt &points3d, TColStd_SequenceOfReal &errors)
	Checks i-th and j-th edges for intersecting. Remark : See the previous method for details. More...
Standard_Boolean	CheckIntersectingEdges (const Standard_Integer num1, const Standard_Integer num2)
	Checks i-th and j-th edges for intersecting. Remark : Calls previous method. Status : See the function above for details. More...
Standard_Boolean	CheckLacking (const Standard_Integer num, const Standard_Real Tolerance, gp_Pnt2d &p2d1, gp_Pnt2d &p2d2)
	Checks if there is a gap in 2d between edges, not comprised by the tolerance of their common vertex. If <Tolerance> is greater than 0. and less than tolerance of the vertex, then this value is used for check. Returns: True if not closed gap was detected p2d1 and p2d2 are the endpoint of <num-1>th edge and start of the <num>th edge in 2d. Status: OK: No edge is lacking (3d and 2d connection) FAIL1: edges have no vertices (at least one of them) FAIL2: edges are neither connected by common vertex, nor have coincided vertices FAIL1: edges have no pcurves DONE1: the gap is detected which cannot be closed by the tolerance of the common vertex (or with value of <Tolerance>) DONE2: is set (together with DONE1) if gap is detected and the vector (p2d2 - p2d1) goes in direction opposite to the pcurves of the edges (if angle is more than 0.9*PI). More...
Standard_Boolean	CheckLacking (const Standard_Integer num, const Standard_Real Tolerance=0.0)
	Checks if there is a gap in 2D between edges and not comprised by vertex tolerance The value of SBWD.thepreci is used. Returns: False if no edge should be inserted Status: OK : No edge is lacking (3d and 2d connection) DONE1 : The vertex tolerance should be increased only (2d gap is small) DONE2 : Edge can be inserted (3d and 2d gaps are large enough) More...
Standard_Boolean	CheckOuterBound (const Standard_Boolean APIMake=Standard_True)
	Checks if wire defines an outer bound on the face Uses ShapeAnalysis::IsOuterBound for analysis If <APIMake> is True uses BRepAPI_MakeWire to build the wire, if False (to be used only when edges share common vertices) uses BRep_Builder to build the wire. More...
Standard_Boolean	CheckNotchedEdges (const Standard_Integer num, Standard_Integer &shortNum, Standard_Real &param, const Standard_Real Tolerance=0.0)
	Detects a notch. More...
Standard_Boolean	CheckSmallArea (const TopoDS_Wire &theWire)
	Checks if wire has parametric area less than precision. More...
Standard_Boolean	CheckShapeConnect (const TopoDS_Shape &shape, const Standard_Real prec=0.0)
	Checks with what orientation <shape> (wire or edge) can be connected to the wire. Tests distances with starting <preci> from <SBWD> (close confusion), but if given <prec> is greater, tests with <prec> (coarse confusion). The smallest found distance can be returned by MinDistance3d. More...
Standard_Boolean	CheckShapeConnect (Standard_Real &tailhead, Standard_Real &tailtail, Standard_Real &headtail, Standard_Real &headhead, const TopoDS_Shape &shape, const Standard_Real prec=0.0)
	The same as previous CheckShapeConnect but is more advanced. It returns the distances between each end of <sbwd> and each end of <shape>. For example, <tailhead> stores distance between tail of <sbwd> and head of <shape> Remark: First method CheckShapeConnect calls this one. More...
Standard_Boolean	CheckLoop (TopTools_IndexedMapOfShape &aMapLoopVertices, TopTools_DataMapOfShapeListOfShape &aMapVertexEdges, TopTools_MapOfShape &aMapSmallEdges, TopTools_MapOfShape &aMapSeemEdges)
	Checks existence of loop on wire and return vertices which are loop vertices (vertices belonging to a few pairs of edges) More...
Standard_Boolean	CheckTail (const TopoDS_Edge &theEdge1, const TopoDS_Edge &theEdge2, const Standard_Real theMaxSine, const Standard_Real theMaxWidth, const Standard_Real theMaxTolerance, TopoDS_Edge &theEdge11, TopoDS_Edge &theEdge12, TopoDS_Edge &theEdge21, TopoDS_Edge &theEdge22)
Standard_Boolean	StatusOrder (const ShapeExtend_Status Status) const
Standard_Boolean	StatusConnected (const ShapeExtend_Status Status) const
Standard_Boolean	StatusEdgeCurves (const ShapeExtend_Status Status) const
Standard_Boolean	StatusDegenerated (const ShapeExtend_Status Status) const
Standard_Boolean	StatusClosed (const ShapeExtend_Status Status) const
Standard_Boolean	StatusSmall (const ShapeExtend_Status Status) const
Standard_Boolean	StatusSelfIntersection (const ShapeExtend_Status Status) const
Standard_Boolean	StatusLacking (const ShapeExtend_Status Status) const
Standard_Boolean	StatusGaps3d (const ShapeExtend_Status Status) const
Standard_Boolean	StatusGaps2d (const ShapeExtend_Status Status) const
Standard_Boolean	StatusCurveGaps (const ShapeExtend_Status Status) const
Standard_Boolean	StatusLoop (const ShapeExtend_Status Status) const
Standard_Boolean	LastCheckStatus (const ShapeExtend_Status Status) const
	Querying the status of the LAST performed 'Advanced' checking procedure. More...
Standard_Real	MinDistance3d () const
	Returns the last lowest distance in 3D computed by CheckOrientation, CheckConnected, CheckContinuity3d, CheckVertex, CheckNewVertex. More...
Standard_Real	MinDistance2d () const
	Returns the last lowest distance in 2D-UV computed by CheckContinuity2d. More...
Standard_Real	MaxDistance3d () const
	Returns the last maximal distance in 3D computed by CheckOrientation, CheckConnected, CheckContinuity3d, CheckVertex, CheckNewVertex, CheckSameParameter. More...
Standard_Real	MaxDistance2d () const
	Returns the last maximal distance in 2D-UV computed by CheckContinuity2d. More...
Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...
	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...
Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...
virtual	~Standard_Transient ()
	Destructor must be virtual. More...
virtual void	Delete () const
	Memory deallocator for transient classes. More...
virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object. More...
Standard_Boolean	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type. More...
Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...
Standard_Boolean	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. More...
Standard_Boolean	IsKind (const Standard_CString 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. More...
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. More...
Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...
void	IncrementRefCounter () const
	Increments the reference counter of this object. More...
Standard_Integer	DecrementRefCounter () const
	Decrements the reference counter of this object; returns the decremented value. More...

Protected Attributes
Handle< ShapeExtend_WireData >	myWire
TopoDS_Face	myFace
Handle< ShapeAnalysis_Surface >	mySurf
Standard_Real	myPrecision
Standard_Real	myMin3d
Standard_Real	myMin2d
Standard_Real	myMax3d
Standard_Real	myMax2d
Standard_Integer	myStatusOrder
Standard_Integer	myStatusConnected
Standard_Integer	myStatusEdgeCurves
Standard_Integer	myStatusDegenerated
Standard_Integer	myStatusClosed
Standard_Integer	myStatusSmall
Standard_Integer	myStatusSelfIntersection
Standard_Integer	myStatusLacking
Standard_Integer	myStatusGaps3d
Standard_Integer	myStatusGaps2d
Standard_Integer	myStatusCurveGaps
Standard_Integer	myStatusLoop
Standard_Integer	myStatus

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object. More...
Static Public Member Functions inherited from Standard_Transient
static const char *	get_type_name ()
	Returns a type descriptor about this object. More...
static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class. More...

Detailed Description

This class provides analysis of a wire to be compliant to CAS.CADE requirements.

The functionalities provided are the following:

1. consistency of 2d and 3d edge curve senses
2. connection of adjacent edges regarding to: a. their vertices b. their pcurves c. their 3d curves
3. adjacency of the edge vertices to its pcurve and 3d curve
4. if a wire is closed or not (considering its 3d and 2d contour)
5. if a wire is outer on its face (considering pcurves)

This class can be used in conjunction with class ShapeFix_Wire, which will fix the problems detected by this class.

The methods of the given class match to ones of the class ShapeFix_Wire, e.g., CheckSmall and FixSmall. This class also includes some auxiliary methods (e.g., CheckOuterBound, etc.), which have no pair in ShapeFix_Wire.

Like methods of ShapeFix_Wire the ones of this class are grouped into two levels:

• Public which are recommended for use (the most global method is Perform),
• Advanced, for optional use only

For analyzing result of Public API checking methods use corresponding Status... method. The 'advanced' functions share the single status field which contains the result of the last performed 'advanced' method. It is queried by the method LastCheckStatus().

In order to prepare an analyzer, it is necessary to load a wire, set face and precision.

Constructor & Destructor Documentation

ShapeAnalysis_Wire() [1/3]

ShapeAnalysis_Wire::ShapeAnalysis_Wire

(

)

Empty constructor.

ShapeAnalysis_Wire() [2/3]

ShapeAnalysis_Wire::ShapeAnalysis_Wire	(	const TopoDS_Wire &	wire,
		const TopoDS_Face &	face,
		const Standard_Real	precision
	)

Creates object with standard TopoDS_Wire, face and precision.

ShapeAnalysis_Wire() [3/3]

ShapeAnalysis_Wire::ShapeAnalysis_Wire	(	const Handle< ShapeExtend_WireData > &	sbwd,
		const TopoDS_Face &	face,
		const Standard_Real	precision
	)

Creates the object with WireData object, face and precision.

Member Function Documentation

CheckClosed()

Standard_Boolean ShapeAnalysis_Wire::CheckClosed

(

const Standard_Real

prec = 0.0

)

Checks if wire is closed, performs CheckConnected, CheckDegenerated and CheckLacking for the first and the last edges Returns: True if at least one check returned True Status: FAIL1 or DONE1: see CheckConnected FAIL2 or DONE2: see CheckDegenerated.

CheckConnected() [1/2]

Standard_Boolean ShapeAnalysis_Wire::CheckConnected	(	const Standard_Integer	num,
		const Standard_Real	prec = 0.0
	)

Checks connected edges (num-th and preceding). Tests with starting preci from <SBWD> or with <prec> if it is greater. Considers Vertices. Returns: False if edges are connected by the common vertex, else True Status : OK : Vertices (end of num-1 th edge and start on num-th one) are already the same DONE1 : Absolutely confused (gp::Resolution) DONE2 : Confused at starting <preci> from <SBWD> DONE3 : Confused at <prec> but not <preci> FAIL1 : Not confused FAIL2 : Not confused but confused with <preci> if reverse num-th edge.

CheckConnected() [2/2]

Standard_Boolean ShapeAnalysis_Wire::CheckConnected

(

const Standard_Real

prec = 0.0

)

Calls to CheckConnected for each edge Returns: True if at least one pair of disconnected edges (not sharing the same vertex) was detected.

CheckCurveGap()

Standard_Boolean ShapeAnalysis_Wire::CheckCurveGap

(

const Standard_Integer

num = 0

)

Checks gap between points on 3D curve and points on surface generated by pcurve of the num-th edge. The distance can be queried by MinDistance3d.

Returns: True if status is DONE Status: OK : Gap is less than myPrecision DONE : Gap is greater than myPrecision FAIL : No 3d curve(s) on the edge(s)

CheckCurveGaps()

Standard_Boolean ShapeAnalysis_Wire::CheckCurveGaps

(

)

CheckDegenerated() [1/3]

Standard_Boolean ShapeAnalysis_Wire::CheckDegenerated

(

)

Calls to CheckDegenerated for each edge Returns: True if at least one incorrect degenerated edge was detected.

CheckDegenerated() [2/3]

Standard_Boolean ShapeAnalysis_Wire::CheckDegenerated

(

const Standard_Integer

num

)

Checks for degenerated edge between two adjacent ones. Remark : Calls previous function Status : See the function above for details.

CheckDegenerated() [3/3]

Standard_Boolean ShapeAnalysis_Wire::CheckDegenerated	(	const Standard_Integer	num,
		gp_Pnt2d &	dgnr1,
		gp_Pnt2d &	dgnr2
	)

Checks for degenerated edge between two adjacent ones. Fills parameters dgnr1 and dgnr2 with points in parametric space that correspond to the singularity (either gap that needs to be filled by degenerated edge or that already filled) Returns: False if no singularity or edge is already degenerated, otherwise True Status: OK : No surface singularity, or edge is already degenerated DONE1: Degenerated edge should be inserted (gap in 2D) DONE2: Edge <num> should be made degenerated (recompute pcurve and set the flag) FAIL1: One of edges neighbouring to degenerated one has no pcurve FAIL2: Edge marked as degenerated and has no pcurve but singularity is not detected.

CheckEdgeCurves()

Standard_Boolean ShapeAnalysis_Wire::CheckEdgeCurves

(

)

Checks edges geometry (consistency of 2d and 3d senses, adjasment of curves to the vertices, etc.). The order of the checks : Call ShapeAnalysis_Wire to check: ShapeAnalysis_Edge::CheckCurve3dWithPCurve (1), ShapeAnalysis_Edge::CheckVertcesWithPCurve (2), ShapeAnalysis_Edge::CheckVertcesWithCurve3d (3), CheckSeam (4) Additional: CheckGap3d (5), CheckGap2d (6), ShapeAnalysis_Edge::CheckSameParameter (7) Returns: True if at least one check returned True Remark: The numbers in brackets show with what DONEi or FAILi the status can be queried.

CheckGap2d()

Standard_Boolean ShapeAnalysis_Wire::CheckGap2d

(

const Standard_Integer

num = 0

)

Checks gap between edges in 2D (pcurves). Checks the distance between ends of pcurves of the num-th and preceding edge. The distance can be queried by MinDistance2d.

Returns: True if status is DONE Status: OK : Gap is less than parametric precision out of myPrecision DONE : Gap is greater than parametric precision out of myPrecision FAIL : No pcurve(s) on the edge(s)

CheckGap3d()

Standard_Boolean ShapeAnalysis_Wire::CheckGap3d

(

const Standard_Integer

num = 0

)

Checks gap between edges in 3D (3d curves). Checks the distance between ends of 3d curves of the num-th and preceding edge. The distance can be queried by MinDistance3d.

Returns: True if status is DONE Status: OK : Gap is less than myPrecision DONE : Gap is greater than myPrecision FAIL : No 3d curve(s) on the edge(s)

CheckGaps2d()

Standard_Boolean ShapeAnalysis_Wire::CheckGaps2d

(

)

CheckGaps3d()

Standard_Boolean ShapeAnalysis_Wire::CheckGaps3d

(

)

CheckIntersectingEdges() [1/4]

Standard_Boolean ShapeAnalysis_Wire::CheckIntersectingEdges

(

const Standard_Integer

num

)

Checks two adjacent edges for intersecting. Remark : Calls the previous method Status : See the function above for details.

CheckIntersectingEdges() [2/4]

Standard_Boolean ShapeAnalysis_Wire::CheckIntersectingEdges	(	const Standard_Integer	num,
		IntRes2d_SequenceOfIntersectionPoint &	points2d,
		TColgp_SequenceOfPnt &	points3d,
		TColStd_SequenceOfReal &	errors
	)

Checks two adjacent edges for intersecting. Intersection is reported only if intersection point is not enclosed by the common end vertex of the edges. Returns: True if intersection is found. If returns True it also fills the sequences of intersection points, corresponding 3d points, and errors for them (half-distances between intersection points in 3d calculated from one and from another edge) Status: FAIL1 : No pcurve FAIL2 : No vertices DONE1 : Self-intersection found.

CheckIntersectingEdges() [3/4]

Standard_Boolean ShapeAnalysis_Wire::CheckIntersectingEdges	(	const Standard_Integer	num1,
		const Standard_Integer	num2
	)

Checks i-th and j-th edges for intersecting. Remark : Calls previous method. Status : See the function above for details.

CheckIntersectingEdges() [4/4]

Standard_Boolean ShapeAnalysis_Wire::CheckIntersectingEdges	(	const Standard_Integer	num1,
		const Standard_Integer	num2,
		IntRes2d_SequenceOfIntersectionPoint &	points2d,
		TColgp_SequenceOfPnt &	points3d,
		TColStd_SequenceOfReal &	errors
	)

Checks i-th and j-th edges for intersecting. Remark : See the previous method for details.

CheckLacking() [1/3]

Standard_Boolean ShapeAnalysis_Wire::CheckLacking

(

)

Calls to CheckLacking for each edge Returns: True if at least one lacking edge was detected.

CheckLacking() [2/3]

Standard_Boolean ShapeAnalysis_Wire::CheckLacking	(	const Standard_Integer	num,
		const Standard_Real	Tolerance,
		gp_Pnt2d &	p2d1,
		gp_Pnt2d &	p2d2
	)

Checks if there is a gap in 2d between edges, not comprised by the tolerance of their common vertex. If <Tolerance> is greater than 0. and less than tolerance of the vertex, then this value is used for check. Returns: True if not closed gap was detected p2d1 and p2d2 are the endpoint of <num-1>th edge and start of the <num>th edge in 2d. Status: OK: No edge is lacking (3d and 2d connection) FAIL1: edges have no vertices (at least one of them) FAIL2: edges are neither connected by common vertex, nor have coincided vertices FAIL1: edges have no pcurves DONE1: the gap is detected which cannot be closed by the tolerance of the common vertex (or with value of <Tolerance>) DONE2: is set (together with DONE1) if gap is detected and the vector (p2d2 - p2d1) goes in direction opposite to the pcurves of the edges (if angle is more than 0.9*PI).

CheckLacking() [3/3]

Standard_Boolean ShapeAnalysis_Wire::CheckLacking	(	const Standard_Integer	num,
		const Standard_Real	Tolerance = 0.0
	)

Checks if there is a gap in 2D between edges and not comprised by vertex tolerance The value of SBWD.thepreci is used. Returns: False if no edge should be inserted Status: OK : No edge is lacking (3d and 2d connection) DONE1 : The vertex tolerance should be increased only (2d gap is small) DONE2 : Edge can be inserted (3d and 2d gaps are large enough)

CheckLoop()

Standard_Boolean ShapeAnalysis_Wire::CheckLoop	(	TopTools_IndexedMapOfShape &	aMapLoopVertices,
		TopTools_DataMapOfShapeListOfShape &	aMapVertexEdges,
		TopTools_MapOfShape &	aMapSmallEdges,
		TopTools_MapOfShape &	aMapSeemEdges
	)

Checks existence of loop on wire and return vertices which are loop vertices (vertices belonging to a few pairs of edges)

CheckNotchedEdges()

Standard_Boolean ShapeAnalysis_Wire::CheckNotchedEdges	(	const Standard_Integer	num,
		Standard_Integer &	shortNum,
		Standard_Real &	param,
		const Standard_Real	Tolerance = 0.0
	)

Detects a notch.

CheckOrder() [1/2]

Standard_Boolean ShapeAnalysis_Wire::CheckOrder	(	const Standard_Boolean	isClosed = Standard_True,
		const Standard_Boolean	mode3d = Standard_True
	)

Calls CheckOrder and returns False if wire is already ordered (tail-to-head), True otherwise Flag <isClosed> defines if the wire is closed or not Flag <mode3d> defines which mode is used (3d or 2d)

CheckOrder() [2/2]

Standard_Boolean ShapeAnalysis_Wire::CheckOrder	(	ShapeAnalysis_WireOrder &	sawo,
		const Standard_Boolean	isClosed = Standard_True,
		const Standard_Boolean	mode3d = Standard_True
	)

Analyzes the order of the edges in the wire, uses class WireOrder for that purpose. Flag <isClosed> defines if the wire is closed or not Flag <mode3d> defines which mode is used (3d or 2d) Returns False if wire is already ordered (tail-to-head), True otherwise. Use returned WireOrder object for deeper analysis. Status: OK : the same edges orientation, the same edges sequence DONE1: the same edges orientation, not the same edges sequence DONE2: as DONE1 and gaps more than myPrecision DONE3: not the same edges orientation (some need to be reversed) DONE4: as DONE3 and gaps more than myPrecision FAIL : algorithm failed (could not detect order)

CheckOuterBound()

Standard_Boolean ShapeAnalysis_Wire::CheckOuterBound

(

const Standard_Boolean

APIMake = Standard_True

)

Checks if wire defines an outer bound on the face Uses ShapeAnalysis::IsOuterBound for analysis If <APIMake> is True uses BRepAPI_MakeWire to build the wire, if False (to be used only when edges share common vertices) uses BRep_Builder to build the wire.

CheckSeam() [1/2]

Standard_Boolean ShapeAnalysis_Wire::CheckSeam

(

const Standard_Integer

num

)

Checks if a seam pcurves are correct oriented See previous functions for details.

CheckSeam() [2/2]

Standard_Boolean ShapeAnalysis_Wire::CheckSeam	(	const Standard_Integer	num,
		Handle< Geom2d_Curve > &	C1,
		Handle< Geom2d_Curve > &	C2,
		Standard_Real &	cf,
		Standard_Real &	cl
	)

Checks if a seam pcurves are correct oriented Returns: False (status OK) if given edge is not a seam or if it is OK C1 - current pcurve for FORWARD edge, C2 - current pcurve for REVERSED edge (if returns True they should be swapped for the seam), cf, cl - first and last parameters on curves Status: OK : Pcurves are correct or edge is not seam DONE : Seam pcurves should be swapped.

CheckSelfIntersectingEdge() [1/2]

Standard_Boolean ShapeAnalysis_Wire::CheckSelfIntersectingEdge

(

const Standard_Integer

num

)

CheckSelfIntersectingEdge() [2/2]

Standard_Boolean ShapeAnalysis_Wire::CheckSelfIntersectingEdge	(	const Standard_Integer	num,
		IntRes2d_SequenceOfIntersectionPoint &	points2d,
		TColgp_SequenceOfPnt &	points3d
	)

Checks if num-th edge is self-intersecting. Self-intersection is reported only if intersection point lies outside of both end vertices of the edge. Returns: True if edge is self-intersecting. If returns True it also fills the sequences of intersection points and corresponding 3d points (only that are not enclosed by a vertices) Status: FAIL1 : No pcurve FAIL2 : No vertices DONE1 : Self-intersection found.

CheckSelfIntersection()

Standard_Boolean ShapeAnalysis_Wire::CheckSelfIntersection

(

)

Checks self-intersection of the wire (considering pcurves) Looks for self-intersecting edges and each pair of intersecting edges. Warning: It does not check each edge with any other one (only each two adjacent edges) The order of the checks : CheckSelfIntersectingEdge, CheckIntersectingEdges Returns: True if at least one check returned True Status: FAIL1 or DONE1 - see CheckSelfIntersectingEdge FAIL2 or DONE2 - see CheckIntersectingEdges.

CheckShapeConnect() [1/2]

Standard_Boolean ShapeAnalysis_Wire::CheckShapeConnect	(	const TopoDS_Shape &	shape,
		const Standard_Real	prec = 0.0
	)

Checks with what orientation <shape> (wire or edge) can be connected to the wire. Tests distances with starting <preci> from <SBWD> (close confusion), but if given <prec> is greater, tests with <prec> (coarse confusion). The smallest found distance can be returned by MinDistance3d.

Returns: False if status is FAIL (see below) Status: DONE1 : If <shape> follows <SBWD>, direct sense (normal) DONE2 : If <shape> follows <SBWD>, but if reversed DONE3 : If <shape> precedes <SBWD>, direct sense DONE4 : If <shape> precedes <SBWD>, but if reversed FAIL1 : If <shape> is neither an edge nor a wire FAIL2 : If <shape> cannot be connected to <SBWD>

DONE5 : To the tail of <SBWD> the <shape> is closer with direct sense DONE6 : To the head of <SBWD> the <shape> is closer with direct sense

Remark: Statuses DONE1 - DONE4, FAIL1 - FAIL2 are basic and describe the nearest connection of the <shape> to <SBWD>. Statuses DONE5 and DONE6 are advanced and are to be used when analyzing with what sense (direct or reversed) the <shape> should be connected to <SBWD>: For tail of <SBWD> if DONE4 is True <shape> should be direct, otherwise reversed. For head of <SBWD> if DONE5 is True <shape> should be direct, otherwise reversed.

CheckShapeConnect() [2/2]

Standard_Boolean ShapeAnalysis_Wire::CheckShapeConnect	(	Standard_Real &	tailhead,
		Standard_Real &	tailtail,
		Standard_Real &	headtail,
		Standard_Real &	headhead,
		const TopoDS_Shape &	shape,
		const Standard_Real	prec = 0.0
	)

The same as previous CheckShapeConnect but is more advanced. It returns the distances between each end of <sbwd> and each end of <shape>. For example, <tailhead> stores distance between tail of <sbwd> and head of <shape> Remark: First method CheckShapeConnect calls this one.

CheckSmall() [1/2]

Standard_Boolean ShapeAnalysis_Wire::CheckSmall	(	const Standard_Integer	num,
		const Standard_Real	precsmall = 0.0
	)

Checks if an edge has a length not greater than myPreci or precsmall (if it is smaller) Returns: False if its length is greater than precision Status: OK : edge is not small or degenerated DONE1: edge is small, vertices are the same DONE2: edge is small, vertices are not the same FAIL : no 3d curve and pcurve.

CheckSmall() [2/2]

Standard_Boolean ShapeAnalysis_Wire::CheckSmall

(

const Standard_Real

precsmall = 0.0

)

Calls to CheckSmall for each edge Returns: True if at least one small edge was detected.

CheckSmallArea()

Standard_Boolean ShapeAnalysis_Wire::CheckSmallArea

(

const TopoDS_Wire &

theWire

)

Checks if wire has parametric area less than precision.

CheckTail()

Standard_Boolean ShapeAnalysis_Wire::CheckTail	(	const TopoDS_Edge &	theEdge1,
		const TopoDS_Edge &	theEdge2,
		const Standard_Real	theMaxSine,
		const Standard_Real	theMaxWidth,
		const Standard_Real	theMaxTolerance,
		TopoDS_Edge &	theEdge11,
		TopoDS_Edge &	theEdge12,
		TopoDS_Edge &	theEdge21,
		TopoDS_Edge &	theEdge22
	)

ClearStatuses()

void ShapeAnalysis_Wire::ClearStatuses

(

)

Unsets all the status and distance fields wire, face and precision are not cleared.

Face()

const TopoDS_Face& ShapeAnalysis_Wire::Face

(

)

const

Returns the working face.

Init() [1/2]

void ShapeAnalysis_Wire::Init	(	const Handle< ShapeExtend_WireData > &	sbwd,
		const TopoDS_Face &	face,
		const Standard_Real	precision
	)

Initializes the object with WireData object, face and precision.

Init() [2/2]

void ShapeAnalysis_Wire::Init	(	const TopoDS_Wire &	wire,
		const TopoDS_Face &	face,
		const Standard_Real	precision
	)

Initializes the object with standard TopoDS_Wire, face and precision.

IsLoaded()

Standard_Boolean ShapeAnalysis_Wire::IsLoaded

(

)

const

Returns True if wire is loaded and has number of edges >0.

IsReady()

Standard_Boolean ShapeAnalysis_Wire::IsReady

(

)

const

Returns True if IsLoaded and underlying face is not null.

LastCheckStatus()

Standard_Boolean ShapeAnalysis_Wire::LastCheckStatus

(

const ShapeExtend_Status

Status

)

const

Querying the status of the LAST performed 'Advanced' checking procedure.

Load() [1/2]

void ShapeAnalysis_Wire::Load

(

const Handle< ShapeExtend_WireData > &

sbwd

)

Loads the object with WireData object.

Load() [2/2]

void ShapeAnalysis_Wire::Load

(

const TopoDS_Wire &

wire

)

Loads the object with standard TopoDS_Wire.

MaxDistance2d()

Standard_Real ShapeAnalysis_Wire::MaxDistance2d

(

)

const

Returns the last maximal distance in 2D-UV computed by CheckContinuity2d.

MaxDistance3d()

Standard_Real ShapeAnalysis_Wire::MaxDistance3d

(

)

const

Returns the last maximal distance in 3D computed by CheckOrientation, CheckConnected, CheckContinuity3d, CheckVertex, CheckNewVertex, CheckSameParameter.

MinDistance2d()

Standard_Real ShapeAnalysis_Wire::MinDistance2d

(

)

const

Returns the last lowest distance in 2D-UV computed by CheckContinuity2d.

MinDistance3d()

Standard_Real ShapeAnalysis_Wire::MinDistance3d

(

)

const

Returns the last lowest distance in 3D computed by CheckOrientation, CheckConnected, CheckContinuity3d, CheckVertex, CheckNewVertex.

NbEdges()

Standard_Integer ShapeAnalysis_Wire::NbEdges

(

)

const

Returns the number of edges in the wire, or 0 if it is not loaded.

Perform()

Standard_Boolean ShapeAnalysis_Wire::Perform

(

)

Performs all the checks in the following order : CheckOrder, CheckSmall, CheckConnected, CheckEdgeCurves, CheckDegenerated, CheckSelfIntersection, CheckLacking, CheckClosed Returns: True if at least one method returned True; For deeper analysis use Status...(status) methods.

Precision()

Standard_Real ShapeAnalysis_Wire::Precision

(

)

const

Returns the value of precision.

SetFace()

void ShapeAnalysis_Wire::SetFace

(

const TopoDS_Face &

face

)

Loads the face the wire lies on.

SetPrecision()

void ShapeAnalysis_Wire::SetPrecision

(

const Standard_Real

precision

)

SetSurface() [1/2]

void ShapeAnalysis_Wire::SetSurface

(

const Handle< Geom_Surface > &

surface

)

Loads the surface the wire lies on.

SetSurface() [2/2]

void ShapeAnalysis_Wire::SetSurface	(	const Handle< Geom_Surface > &	surface,
		const TopLoc_Location &	location
	)

Loads the surface the wire lies on.

StatusClosed()

Standard_Boolean ShapeAnalysis_Wire::StatusClosed

(

const ShapeExtend_Status

Status

)

const

StatusConnected()

Standard_Boolean ShapeAnalysis_Wire::StatusConnected

(

const ShapeExtend_Status

Status

)

const

StatusCurveGaps()

Standard_Boolean ShapeAnalysis_Wire::StatusCurveGaps

(

const ShapeExtend_Status

Status

)

const

StatusDegenerated()

Standard_Boolean ShapeAnalysis_Wire::StatusDegenerated

(

const ShapeExtend_Status

Status

)

const

StatusEdgeCurves()

Standard_Boolean ShapeAnalysis_Wire::StatusEdgeCurves

(

const ShapeExtend_Status

Status

)

const

StatusGaps2d()

Standard_Boolean ShapeAnalysis_Wire::StatusGaps2d

(

const ShapeExtend_Status

Status

)

const

StatusGaps3d()

Standard_Boolean ShapeAnalysis_Wire::StatusGaps3d

(

const ShapeExtend_Status

Status

)

const

StatusLacking()

Standard_Boolean ShapeAnalysis_Wire::StatusLacking

(

const ShapeExtend_Status

Status

)

const

StatusLoop()

Standard_Boolean ShapeAnalysis_Wire::StatusLoop

(

const ShapeExtend_Status

Status

)

const

StatusOrder()

Standard_Boolean ShapeAnalysis_Wire::StatusOrder

(

const ShapeExtend_Status

Status

)

const

StatusSelfIntersection()

Standard_Boolean ShapeAnalysis_Wire::StatusSelfIntersection

(

const ShapeExtend_Status

Status

)

const

StatusSmall()

Standard_Boolean ShapeAnalysis_Wire::StatusSmall

(

const ShapeExtend_Status

Status

)

const

Surface()

const Handle< ShapeAnalysis_Surface >& ShapeAnalysis_Wire::Surface

(

)

const

Returns the working surface.

WireData()

const Handle< ShapeExtend_WireData >& ShapeAnalysis_Wire::WireData

(

)

const

Returns wire object being analyzed.

Field Documentation

myFace

TopoDS_Face ShapeAnalysis_Wire::myFace

protected

myMax2d

Standard_Real ShapeAnalysis_Wire::myMax2d

protected

myMax3d

Standard_Real ShapeAnalysis_Wire::myMax3d

protected

myMin2d

Standard_Real ShapeAnalysis_Wire::myMin2d

protected

myMin3d

Standard_Real ShapeAnalysis_Wire::myMin3d

protected

myPrecision

Standard_Real ShapeAnalysis_Wire::myPrecision

protected

myStatus

Standard_Integer ShapeAnalysis_Wire::myStatus

protected

myStatusClosed

Standard_Integer ShapeAnalysis_Wire::myStatusClosed

protected

myStatusConnected

Standard_Integer ShapeAnalysis_Wire::myStatusConnected

protected

myStatusCurveGaps

Standard_Integer ShapeAnalysis_Wire::myStatusCurveGaps

protected

myStatusDegenerated

Standard_Integer ShapeAnalysis_Wire::myStatusDegenerated

protected

myStatusEdgeCurves

Standard_Integer ShapeAnalysis_Wire::myStatusEdgeCurves

protected

myStatusGaps2d

Standard_Integer ShapeAnalysis_Wire::myStatusGaps2d

protected

myStatusGaps3d

Standard_Integer ShapeAnalysis_Wire::myStatusGaps3d

protected

myStatusLacking

Standard_Integer ShapeAnalysis_Wire::myStatusLacking

protected

myStatusLoop

Standard_Integer ShapeAnalysis_Wire::myStatusLoop

protected

myStatusOrder

Standard_Integer ShapeAnalysis_Wire::myStatusOrder

protected

myStatusSelfIntersection

Standard_Integer ShapeAnalysis_Wire::myStatusSelfIntersection

protected

myStatusSmall

Standard_Integer ShapeAnalysis_Wire::myStatusSmall

protected

mySurf

Handle< ShapeAnalysis_Surface > ShapeAnalysis_Wire::mySurf

protected

myWire

Handle< ShapeExtend_WireData > ShapeAnalysis_Wire::myWire

protected

---

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

• ShapeAnalysis_Wire.hxx