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# patch with leaving old behavior, and adding new behavior by option

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This commit is contained in:
msv
2018-10-05 20:03:04 +03:00
parent 1b7899d7de
commit 83bc18b4f0
9 changed files with 122 additions and 39 deletions
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4
src/BRepMesh/BRepMesh_DiscretFactory.hxx
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@@ -89,9 +89,11 @@ public:
//! @param theShape shape to be meshed.
//! @param theLinDeflection linear deflection to be used for meshing.
//! @param theAngDeflection angular deflection to be used for meshing.
//! @param theTDOldBehavior tangential deflection behavior for default algorithm.
Standard_EXPORT Handle(BRepMesh_DiscretRoot) Discret(const TopoDS_Shape& theShape,
const Standard_Real theLinDeflection,
const Standard_Real theAngDeflection);
const Standard_Real theAngDeflection,
const Standard_Boolean theTDOldBehavior = Standard_True);
protected:

7
src/BRepMesh/BRepMesh_FastDiscret.hxx
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@@ -68,7 +68,8 @@ public:
Relative(Standard_False),
AdaptiveMin(Standard_False),
InternalVerticesMode(Standard_True),
ControlSurfaceDeflection(Standard_True)
ControlSurfaceDeflection(Standard_True),
TDOldBehavior(Standard_True)
{
}
@@ -103,6 +104,10 @@ public:
//! Prameter to check the deviation of triangulation and interior of
//! the face
Standard_Boolean ControlSurfaceDeflection;
//! Prameter to set tangential deflection behavior
//! (old - for backward compatibility, may produce incorrect results in several cases)
Standard_Boolean TDOldBehavior;
};
public:

23
src/BRepMesh/BRepMesh_IncrementalMesh.cxx
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@@ -84,7 +84,8 @@ BRepMesh_IncrementalMesh::BRepMesh_IncrementalMesh( const TopoDS_Shape& theSh
const Standard_Boolean isRelative,
const Standard_Real theAngDeflection,
const Standard_Boolean isInParallel,
const Standard_Boolean adaptiveMin)
const Standard_Boolean adaptiveMin,
const Standard_Boolean theTdOldBehavior)
: myMaxShapeSize(0.),
myModified(Standard_False),
myStatus(0)
@@ -94,6 +95,7 @@ BRepMesh_IncrementalMesh::BRepMesh_IncrementalMesh( const TopoDS_Shape& theSh
myParameters.Angle = theAngDeflection;
myParameters.InParallel = isInParallel;
myParameters.AdaptiveMin = adaptiveMin;
myParameters.TDOldBehavior = theTdOldBehavior;
myShape = theShape;
Perform();
@@ -262,7 +264,7 @@ void BRepMesh_IncrementalMesh::discretizeFreeEdges()
BRepAdaptor_Curve aCurve(aEdge);
GCPnts_TangentialDeflection aDiscret(aCurve, aCurve.FirstParameter(),
aCurve.LastParameter(), myParameters.Angle, aEdgeDeflection, 2,
Precision::PConfusion(), myParameters.MinSize);
Precision::PConfusion(), myParameters.MinSize, myParameters.TDOldBehavior);
Standard_Integer aNodesNb = aDiscret.NbPoints();
TColgp_Array1OfPnt aNodes (1, aNodesNb);
@@ -572,6 +574,23 @@ Standard_Integer BRepMesh_IncrementalMesh::Discret(
return 0; // no error
}
Standard_Integer BRepMesh_IncrementalMesh::Discret(
const TopoDS_Shape& theShape,
const Standard_Real theDeflection,
const Standard_Real theAngle,
const Standard_Boolean theTdOldBehavior,
BRepMesh_DiscretRoot* &theAlgo)
{
BRepMesh_IncrementalMesh* anAlgo = new BRepMesh_IncrementalMesh();
anAlgo->ChangeParameters().Deflection = theDeflection;
anAlgo->ChangeParameters().Angle = theAngle;
anAlgo->ChangeParameters().InParallel = IS_IN_PARALLEL;
anAlgo->ChangeParameters().TDOldBehavior = theTdOldBehavior;
anAlgo->SetShape(theShape);
theAlgo = anAlgo;
return 0; // no error
}
//=======================================================================
//function : IsParallelDefault
//purpose :

16
src/BRepMesh/BRepMesh_IncrementalMesh.hxx
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@@ -57,7 +57,8 @@ public: //! @name mesher API
const Standard_Boolean isRelative = Standard_False,
const Standard_Real theAngDeflection = 0.5,
const Standard_Boolean isInParallel = Standard_False,
const Standard_Boolean adaptiveMin = Standard_False);
const Standard_Boolean adaptiveMin = Standard_False,
const Standard_Boolean theTdOldBehavior = Standard_True);
//! Constructor.
//! Automatically calls method Perform.
@@ -109,6 +110,19 @@ public: //! @name plugin API
const Standard_Real theAngDeflection,
BRepMesh_DiscretRoot* &theAlgo);
//! Plugin interface for the Mesh Factories.
//! Initializes meshing algorithm with the given parameters.
//! @param theShape shape to be meshed.
//! @param theLinDeflection linear deflection.
//! @param theAngDeflection angular deflection.
//! @param theTdOldBehavior angle comparison mode for tangential deflection
//! @param[out] theAlgo pointer to initialized algorithm.
Standard_EXPORT static Standard_Integer Discret(const TopoDS_Shape& theShape,
const Standard_Real theLinDeflection,
const Standard_Real theAngDeflection,
const Standard_Boolean theTdOldBehavior,
BRepMesh_DiscretRoot* &theAlgo);
//! Returns multi-threading usage flag set by default in
//! Discret() static method (thus applied only to Mesh Factories).
Standard_EXPORT static Standard_Boolean IsParallelDefault();

15
src/GCPnts/GCPnts_TangentialDeflection.cxx
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@@ -79,6 +79,21 @@ static Standard_Real EstimAngl(const gp_Pnt& P1, const gp_Pnt& Pm, const gp_Pnt&
}
}
static Standard_Real EstimAnglOld(const gp_Pnt& P1, const gp_Pnt& Pm, const gp_Pnt& P2)
{
gp_Vec V1(P1, Pm), V2(Pm, P2);
Standard_Real L = Sqrt(V1.SquareMagnitude() * V2.SquareMagnitude());
//
if(L > gp::Resolution())
{
return V1.CrossMagnitude(V2) / L;
}
else
{
return 0.;
}
}
// Return number of interval of continuity on which theParam is located.
// Last parameter is used to increase search speed.

23
src/GCPnts/GCPnts_TangentialDeflection.hxx
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@@ -75,21 +75,21 @@ public:
Standard_EXPORT GCPnts_TangentialDeflection();
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor3d_Curve& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor3d_Curve& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor3d_Curve& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor3d_Curve& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor2d_Curve2d& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor2d_Curve2d& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor2d_Curve2d& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT GCPnts_TangentialDeflection(const Adaptor2d_Curve2d& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
Standard_EXPORT void Initialize (const Adaptor3d_Curve& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT void Initialize (const Adaptor3d_Curve& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
Standard_EXPORT void Initialize (const Adaptor3d_Curve& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT void Initialize (const Adaptor3d_Curve& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7);
Standard_EXPORT void Initialize (const Adaptor2d_Curve2d& C, const Standard_Real FirstParameter, const Standard_Real LastParameter, const Standard_Real AngularDeflection, const Standard_Real CurvatureDeflection, const Standard_Integer MinimumOfPoints = 2, const Standard_Real UTol = 1.0e-9, const Standard_Real theMinLen = 1.0e-7, const Standard_Boolean ACompOldBehavior = Standard_False);
//! Add point to already calculated points (or replace existing)
//! Returns index of new added point
@@ -111,6 +111,12 @@ public:
return points.Value (I);
}
//! Returns if the old behavior for angle comparison (based on sin) or the new one (based on cos) should be used.
Standard_Boolean ACompOldBehavior()
{
return aCompOldBehavior;
}
//! Computes angular step for the arc using the given parameters.
Standard_EXPORT static Standard_Real ArcAngularStep (const Standard_Real theRadius, const Standard_Real theLinearDeflection, const Standard_Real theAngularDeflection, const Standard_Real theMinLength);
@@ -148,6 +154,7 @@ private:
Standard_Real firstu;
TColgp_SequenceOfPnt points;
TColStd_SequenceOfReal parameters;
Standard_Boolean aCompOldBehavior;
};
#endif // _GCPnts_TangentialDeflection_HeaderFile

37
src/GCPnts/GCPnts_TangentialDeflection.pxx
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@@ -42,7 +42,7 @@ void GCPnts_TangentialDeflection::EvaluateDu (
Standard_Real Lc = N.CrossMagnitude (T);
Standard_Real Ln = Lc/Lt;
if (Ln > LTol) {
Du = sqrt (8.0 * Max(curvatureDeflection, myMinLen) / Ln);
Du = Sqrt (8.0 * Max(curvatureDeflection, myMinLen) / Ln);
NotDone = Standard_False;
}
}
@@ -60,10 +60,11 @@ GCPnts_TangentialDeflection::GCPnts_TangentialDeflection (
const Standard_Real CurvatureDeflection,
const Standard_Integer MinimumOfPoints,
const Standard_Real UTol,
const Standard_Real theMinLen)
const Standard_Real theMinLen,
const Standard_Boolean ACompOldBehavior)
{
Initialize (C,AngularDeflection,CurvatureDeflection,MinimumOfPoints,UTol,theMinLen);
Initialize (C,AngularDeflection,CurvatureDeflection,MinimumOfPoints,UTol,theMinLen, ACompOldBehavior);
}
@@ -80,7 +81,8 @@ GCPnts_TangentialDeflection::GCPnts_TangentialDeflection (
const Standard_Real CurvatureDeflection,
const Standard_Integer MinimumOfPoints,
const Standard_Real UTol,
const Standard_Real theMinLen)
const Standard_Real theMinLen,
const Standard_Boolean ACompOldBehavior)
{
Initialize (C,
@@ -89,7 +91,8 @@ GCPnts_TangentialDeflection::GCPnts_TangentialDeflection (
AngularDeflection,
CurvatureDeflection,
MinimumOfPoints,
UTol, theMinLen);
UTol, theMinLen,
ACompOldBehavior);
}
@@ -105,7 +108,8 @@ void GCPnts_TangentialDeflection::Initialize (
const Standard_Real CurvatureDeflection,
const Standard_Integer MinimumOfPoints,
const Standard_Real UTol,
const Standard_Real theMinLen)
const Standard_Real theMinLen,
const Standard_Boolean ACompOldBehavior)
{
Initialize (C,
@@ -114,7 +118,8 @@ void GCPnts_TangentialDeflection::Initialize (
AngularDeflection,
CurvatureDeflection,
MinimumOfPoints,
UTol, theMinLen);
UTol, theMinLen,
ACompOldBehavior);
}
@@ -131,12 +136,14 @@ void GCPnts_TangentialDeflection::Initialize (
const Standard_Real CurvatureDeflection,
const Standard_Integer MinimumOfPoints,
const Standard_Real UTol,
const Standard_Real theMinLen)
const Standard_Real theMinLen,
const Standard_Boolean ACompOldBehavior)
{
Standard_ConstructionError_Raise_if (CurvatureDeflection <= Precision::Confusion () || AngularDeflection <= Precision::Angular (), "GCPnts_TangentialDeflection::Initialize - Zero Deflection")
aCompOldBehavior = ACompOldBehavior;
parameters.Clear ();
points .Clear ();
if (FirstParameter < LastParameter) {
@@ -462,7 +469,7 @@ void GCPnts_TangentialDeflection::PerformCurve (const TheCurve& C)
L2 = V2.SquareModulus ();
if (L1 > MinLen2 && L2 > MinLen2)
{
Standard_Real angg = V1.CrossMagnitude(V2) / (Sqrt(L1 * L2));
Standard_Real angg = V1.CrossMagnitude(V2) / Sqrt(L1 * L2);
ACoef = angg / AngleMax;
}
else
@@ -607,7 +614,7 @@ void GCPnts_TangentialDeflection::PerformCurve (const TheCurve& C)
//Additional check for intervals
Standard_Integer MaxNbp = 10 * Nbp;
Standard_Real CosAngleMax = Sqrt(1.0 - AngleMax * AngleMax);
const Standard_Real AngleMaxFixed = aCompOldBehavior ? AngleMax : Sqrt(1.0 - AngleMax * AngleMax);
for(i = 1; i < Nbp; ++i)
{
@@ -616,14 +623,16 @@ void GCPnts_TangentialDeflection::PerformCurve (const TheCurve& C)
// Check maximal deflection on interval;
Standard_Real dmax = 0.;
Standard_Real umax = 0.;
Standard_Real amax = 0.;
EstimDefl(C, U1, U2, dmax, umax);
const gp_Pnt& P1 = points(i);
const gp_Pnt& P2 = points(i+1);
D0(C, umax, MiddlePoint);
amax = EstimAngl(P1, MiddlePoint, P2);
if(dmax > curvatureDeflection || amax < CosAngleMax)
Standard_Real amax = aCompOldBehavior ? EstimAnglOld(P1, MiddlePoint, P2) : EstimAngl(P1, MiddlePoint, P2);
if(dmax > curvatureDeflection || (aCompOldBehavior ? amax - AngleMaxFixed : AngleMaxFixed - amax) > ATol)
{
if(umax - U1 > uTol && U2 - umax > uTol)
{
if (P1.SquareDistance(MiddlePoint) > MinLen2 && P2.SquareDistance(MiddlePoint) > MinLen2)
@@ -660,7 +669,7 @@ void GCPnts_TangentialDeflection::EstimDefl (const TheCurve& C,
Standard_Real reltol = Max(1.e-3, 2.*uTol/((Abs(U1) + Abs(U2))));
//
math_BrentMinimum anOptLoc(reltol, aNbIter, uTol);
anOptLoc.Perform(aFunc, U1, (U1+U2)/2., U2);
anOptLoc.Perform(aFunc, U1, (U1+U2)*0.5, U2);
if(anOptLoc.IsDone())
{
MaxDefl = Sqrt(-anOptLoc.Minimum());

10
src/IVtkOCC/IVtkOCC_ShapeMesher.cxx
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@@ -128,7 +128,8 @@ void IVtkOCC_ShapeMesher::meshShape()
Handle(BRepMesh_DiscretRoot) anAlgo;
anAlgo = BRepMesh_DiscretFactory::Get().Discret (anOcctShape,
aDeflection,
GetDeviationAngle());
GetDeviationAngle(),
GetTDOldBehavior());
if (!anAlgo.IsNull())
{
anAlgo->Perform();
@@ -458,6 +459,7 @@ static void FindLimits (const Adaptor3d_Curve& theCurve,
static void DrawCurve (Adaptor3d_Curve& theCurve,
const Standard_Real theDeflection,
const Standard_Real theAngle,
const Standard_Boolean theTDOldBehavior,
const Standard_Real theU1,
const Standard_Real theU2,
IVtk_Polyline& thePoints)
@@ -493,7 +495,7 @@ static void DrawCurve (Adaptor3d_Curve& theCurve,
anU1 = Max(anU1, anU1);
anU2 = Min(anU2, anU2);
GCPnts_TangentialDeflection anAlgo (theCurve, anU1, anU2, theAngle, theDeflection);
GCPnts_TangentialDeflection anAlgo (theCurve, anU1, anU2, theAngle, theDeflection, theTDOldBehavior);
NumberOfPoints = anAlgo.NbPoints();
if (NumberOfPoints > 0)
@@ -766,7 +768,7 @@ void IVtkOCC_ShapeMesher::buildIsoLines (const Handle(BRepAdaptor_HSurface)& the
if (aB2 - aB1 > Precision::Confusion())
{
IVtk_Polyline aPoints;
DrawCurve (aGeomCurve, aDeflection, anAngle, aB1, aB2, aPoints);
DrawCurve (aGeomCurve, aDeflection, anAngle, GetTDOldBehavior(), aB1, aB2, aPoints);
thePolylines.Append (aPoints);
}
}
@@ -784,7 +786,7 @@ void IVtkOCC_ShapeMesher::buildIsoLines (const Handle(BRepAdaptor_HSurface)& the
if (aB2 - aB1>Precision::Confusion())
{
IVtk_Polyline aPoints;
DrawCurve (anIso, aDeflection, anAngle, aB1, aB2, aPoints);
DrawCurve (anIso, aDeflection, anAngle, GetTDOldBehavior(), aB1, aB2, aPoints);
thePolylines.Append (aPoints);
}
}

12
src/IVtkOCC/IVtkOCC_ShapeMesher.hxx
View File

@@ -50,9 +50,11 @@ public:
IVtkOCC_ShapeMesher (const Standard_Real& theDevCoeff = 0.0001,
const Standard_Real& theDevAngle = 12.0 * M_PI / 180.0,
const Standard_Integer theNbUIsos = 1,
const Standard_Integer theNbVIsos = 1)
const Standard_Integer theNbVIsos = 1,
const Standard_Boolean theTDOldBehavior = Standard_True)
: myDevCoeff (theDevCoeff),
myDevAngle (theDevAngle),
myTDOldBehavior(theTDOldBehavior),
myDeflection (0.0)
{
myNbIsos[0] = theNbUIsos;
@@ -85,6 +87,13 @@ public:
return myDevAngle;
}
//! Returns tangential deflection behavior used in the algorithm
//! @return tangential deflection behavior
Standard_Boolean GetTDOldBehavior() const
{
return myTDOldBehavior;
}
protected:
//! Executes the mesh generation algorithms. To be defined in implementation class.
Standard_EXPORT virtual void internalBuild() Standard_OVERRIDE;
@@ -186,6 +195,7 @@ private:
Standard_Real myDevAngle;
mutable Standard_Real myDeflection;
Standard_Integer myNbIsos[2];
Standard_Boolean myTDOldBehavior;
};
#endif // __IVTKOCC_SHAPEMESHER_H__