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0027079: Bad approximation of intersection curves with variable curvature

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1. Method Approx_ComputeLine::Perform is modified: now it contains also recursive calls after new line computation made by new method ApproxInt_MultiLine::MakeMLOneMorePoint.
    2. New method MakeMLOneMorePoint is added to ApproxInt_MultiLine: it builds new sub-line as a part of main line with new point added into the middle of the longest interval between existing points.
    3. Method ShapeConstruct_ProjectCurveOnSurface::ApproxPCurve is modified to avoid regressions: now it takes care of the set of initial points to be enough close to each other so that an interval between two adjacent points is less than half-period of the surface.
    4. Modification in ShapeConstruct_ProjectCurveOnSurface: correction of pcurves of edges which extremities are in the singularities of surface.
This commit is contained in:
jgv
2017-03-20 14:43:32 +03:00
committed by bugmaster
parent 6c060ff2c4
commit 2c26a53d85
29 changed files with 1626 additions and 460 deletions
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9
src/BRepApprox/BRepApprox_TheComputeLineBezierOfApprox.hxx
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@@ -132,7 +132,13 @@ private:
//! is internally used in the algorithm.
Standard_EXPORT Standard_Boolean Compute (const BRepApprox_TheMultiLineOfApprox& Line, const Standard_Integer fpt, const Standard_Integer lpt, math_Vector& Para, Standard_Real& TheTol3d, Standard_Real& TheTol2d);
Standard_EXPORT Standard_Boolean Compute (const BRepApprox_TheMultiLineOfApprox& Line,
const Standard_Integer fpt,
const Standard_Integer lpt,
math_Vector& Para,
Standard_Real& TheTol3d,
Standard_Real& TheTol2d,
Standard_Integer& indbad);
//! is internally used in the algorithm.
Standard_EXPORT Standard_Boolean ComputeCurve (const BRepApprox_TheMultiLineOfApprox& Line, const Standard_Integer firspt, const Standard_Integer lastpt);
@@ -173,6 +179,7 @@ private:
AppParCurves_Constraint myfirstC;
AppParCurves_Constraint mylastC;
Standard_Integer myMultiLineNb;
Standard_Integer myNbPlusOnePoint;
Standard_Boolean myIsClear;

20
src/BRepApprox/BRepApprox_TheImpPrmSvSurfacesOfApprox.hxx
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@@ -53,16 +53,34 @@ public:
Standard_EXPORT BRepApprox_TheImpPrmSvSurfacesOfApprox(const IntSurf_Quadric& Surf1, const BRepAdaptor_Surface& Surf2);
//! returns True if Tg,Tguv1 Tguv2 can be computed.
Standard_EXPORT Standard_Boolean Compute (Standard_Real& u1, Standard_Real& v1, Standard_Real& u2, Standard_Real& v2, gp_Pnt& Pt, gp_Vec& Tg, gp_Vec2d& Tguv1, gp_Vec2d& Tguv2);
Standard_EXPORT Standard_Boolean Compute (Standard_Real& u1, Standard_Real& v1, Standard_Real& u2, Standard_Real& v2,
gp_Pnt& Pt, gp_Vec& Tg, gp_Vec2d& Tguv1, gp_Vec2d& Tguv2);
Standard_EXPORT void Pnt (const Standard_Real u1, const Standard_Real v1, const Standard_Real u2, const Standard_Real v2, gp_Pnt& P);
Standard_EXPORT Standard_Boolean SeekPoint(const Standard_Real u1,
const Standard_Real v1,
const Standard_Real u2,
const Standard_Real v2,
IntSurf_PntOn2S& Point);
Standard_EXPORT Standard_Boolean Tangency (const Standard_Real u1, const Standard_Real v1, const Standard_Real u2, const Standard_Real v2, gp_Vec& Tg);
Standard_EXPORT Standard_Boolean TangencyOnSurf1 (const Standard_Real u1, const Standard_Real v1, const Standard_Real u2, const Standard_Real v2, gp_Vec2d& Tg);
Standard_EXPORT Standard_Boolean TangencyOnSurf2 (const Standard_Real u1, const Standard_Real v1, const Standard_Real u2, const Standard_Real v2, gp_Vec2d& Tg);
Standard_Boolean FillInitialVectorOfSolution(const Standard_Real u1,
const Standard_Real v1,
const Standard_Real u2,
const Standard_Real v2,
const Standard_Real binfu,
const Standard_Real bsupu,
const Standard_Real binfv,
const Standard_Real bsupv,
math_Vector& X,
Standard_Real& TranslationU,
Standard_Real& TranslationV);

52
src/BRepApprox/BRepApprox_TheMultiLineOfApprox.hxx
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@@ -41,6 +41,8 @@ public:
DEFINE_STANDARD_ALLOC
Standard_EXPORT BRepApprox_TheMultiLineOfApprox();
//! The class SvSurfaces is used when the approximation algorithm
//! needs some extra points on the line <line>.
//! A New line is then created which shares the same surfaces and functions.
@@ -51,6 +53,8 @@ public:
const Standard_Address PtrSvSurfaces,
const Standard_Integer NbP3d,
const Standard_Integer NbP2d,
const Standard_Boolean ApproxU1V1,
const Standard_Boolean ApproxU2V2,
const Standard_Real xo,
const Standard_Real yo,
const Standard_Real zo,
@@ -66,6 +70,8 @@ public:
Standard_EXPORT BRepApprox_TheMultiLineOfApprox(const Handle(BRepApprox_ApproxLine)& line,
const Standard_Integer NbP3d,
const Standard_Integer NbP2d,
const Standard_Boolean ApproxU1V1,
const Standard_Boolean ApproxU2V2,
const Standard_Real xo,
const Standard_Real yo,
const Standard_Real zo,
@@ -106,30 +112,42 @@ public:
//! Returns the 3d and 2d points of the multipoint <MPointIndex>.
Standard_EXPORT Standard_Boolean Tangency (const Standard_Integer MPointIndex, TColgp_Array1OfVec& tabV, TColgp_Array1OfVec2d& tabV2d) const;
//! Tries to make a sub-line between <Low> and <High> points of this line
//! by adding <NbPointsToInsert> new points
Standard_EXPORT BRepApprox_TheMultiLineOfApprox MakeMLBetween (const Standard_Integer Low,
const Standard_Integer High,
const Standard_Integer NbPointsToInsert) const;
Standard_EXPORT BRepApprox_TheMultiLineOfApprox MakeMLBetween (const Standard_Integer Low, const Standard_Integer High, const Standard_Integer NbPointsToInsert) const;
//! Tries to make a sub-line between <Low> and <High> points of this line
//! by adding one more point between (indbad-1)-th and indbad-th points
Standard_EXPORT Standard_Boolean MakeMLOneMorePoint (const Standard_Integer Low,
const Standard_Integer High,
const Standard_Integer indbad,
BRepApprox_TheMultiLineOfApprox& OtherLine) const;
//! Dump of the current multi-line.
Standard_EXPORT void Dump() const;
protected:
BRepApprox_TheMultiLineOfApprox operator=(BRepApprox_TheMultiLineOfApprox&);
private:
const Standard_Address PtrOnmySvSurfaces;
const Handle(BRepApprox_ApproxLine) myLine;
const Standard_Integer indicemin;
const Standard_Integer indicemax;
const Standard_Integer nbp3d;
const Standard_Integer nbp2d;
const Standard_Boolean p2donfirst;
const Standard_Real Xo;
const Standard_Real Yo;
const Standard_Real Zo;
const Standard_Real U1o;
const Standard_Real V1o;
const Standard_Real U2o;
const Standard_Real V2o;
Standard_Address PtrOnmySvSurfaces;
Handle(BRepApprox_ApproxLine) myLine;
Standard_Integer indicemin;
Standard_Integer indicemax;
Standard_Integer nbp3d;
Standard_Integer nbp2d;
Standard_Boolean myApproxU1V1;
Standard_Boolean myApproxU2V2;
Standard_Boolean p2donfirst;
Standard_Real Xo;
Standard_Real Yo;
Standard_Real Zo;
Standard_Real U1o;
Standard_Real V1o;
Standard_Real U2o;
Standard_Real V2o;
};

7
src/BRepApprox/BRepApprox_TheMultiLineToolOfApprox.hxx
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@@ -92,6 +92,13 @@ public:
//! Is called if WhatStatus returned "PointsAdded".
static BRepApprox_TheMultiLineOfApprox MakeMLBetween (const BRepApprox_TheMultiLineOfApprox& ML, const Standard_Integer I1, const Standard_Integer I2, const Standard_Integer NbPMin);
//! Is called when the Bezier curve contains a loop
static Standard_Boolean MakeMLOneMorePoint (const BRepApprox_TheMultiLineOfApprox& ML,
const Standard_Integer I1,
const Standard_Integer I2,
const Standard_Integer indbad,
BRepApprox_TheMultiLineOfApprox& OtherLine);
static Approx_Status WhatStatus (const BRepApprox_TheMultiLineOfApprox& ML, const Standard_Integer I1, const Standard_Integer I2);
//! Dump of the current multi-line.

9
src/BRepApprox/BRepApprox_ThePrmPrmSvSurfacesOfApprox.hxx
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@@ -50,10 +50,17 @@ public:
Standard_EXPORT BRepApprox_ThePrmPrmSvSurfacesOfApprox(const BRepAdaptor_Surface& Surf1, const BRepAdaptor_Surface& Surf2);
//! returns True if Tg,Tguv1 Tguv2 can be computed.
Standard_EXPORT Standard_Boolean Compute (Standard_Real& u1, Standard_Real& v1, Standard_Real& u2, Standard_Real& v2, gp_Pnt& Pt, gp_Vec& Tg, gp_Vec2d& Tguv1, gp_Vec2d& Tguv2);
Standard_EXPORT Standard_Boolean Compute (Standard_Real& u1, Standard_Real& v1, Standard_Real& u2, Standard_Real& v2,
gp_Pnt& Pt, gp_Vec& Tg, gp_Vec2d& Tguv1, gp_Vec2d& Tguv2);
Standard_EXPORT void Pnt (const Standard_Real u1, const Standard_Real v1, const Standard_Real u2, const Standard_Real v2, gp_Pnt& P);
Standard_EXPORT Standard_Boolean SeekPoint(const Standard_Real u1,
const Standard_Real v1,
const Standard_Real u2,
const Standard_Real v2,
IntSurf_PntOn2S& Point);
Standard_EXPORT Standard_Boolean Tangency (const Standard_Real u1, const Standard_Real v1, const Standard_Real u2, const Standard_Real v2, gp_Vec& Tg);
Standard_EXPORT Standard_Boolean TangencyOnSurf1 (const Standard_Real u1, const Standard_Real v1, const Standard_Real u2, const Standard_Real v2, gp_Vec2d& Tg);