[occt.git] / src / IntTools / IntTools_TopolTool.cxx

// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.


#include <Adaptor3d_Surface.hxx>
#include <ElSLib.hxx>
#include <Geom_BezierSurface.hxx>
#include <Geom_BSplineSurface.hxx>
#include <gp_Circ.hxx>
#include <gp_Cone.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pnt2d.hxx>
#include <IntTools_TopolTool.hxx>
#include <Precision.hxx>
#include <Standard_NotImplemented.hxx>
#include <Standard_Type.hxx>
#include <TColgp_Array2OfPnt.hxx>
#include <TColStd_HArray1OfReal.hxx>

IMPLEMENT_STANDARD_RTTIEXT(IntTools_TopolTool,Adaptor3d_TopolTool)

static void Analyse(const TColgp_Array2OfPnt& array2,
		    Standard_Integer&         theNbSamplesU,
		    Standard_Integer&         theNbSamplesV);

// =====================================================================================
// function: Constructor
// purpose:
// =====================================================================================
IntTools_TopolTool::IntTools_TopolTool()
{
  myNbSmplU = 0;
  myNbSmplV = 0;
  myDU = 1.;
  myDV = 1.;
}

// =====================================================================================
// function: Constructor
// purpose:
// =====================================================================================
IntTools_TopolTool::IntTools_TopolTool(const Handle(Adaptor3d_Surface)& theSurface)
{
  Initialize(theSurface);
  myNbSmplU = 0;
  myNbSmplV = 0;
  myDU = 1.;
  myDV = 1.;
}

// =====================================================================================
// function: Initialize
// purpose:
// =====================================================================================
void IntTools_TopolTool::Initialize() 
{
  throw Standard_NotImplemented("IntTools_TopolTool::Initialize ()");
}

// =====================================================================================
// function: Initialize
// purpose:
// =====================================================================================
void IntTools_TopolTool::Initialize(const Handle(Adaptor3d_Surface)& theSurface) 
{
  Adaptor3d_TopolTool::Initialize(theSurface);
  //myS = theSurface;
  myNbSmplU = 0;
  myNbSmplV = 0;
  myDU = 1.;
  myDV = 1.;
}

// =====================================================================================
// function: ComputeSamplePoints
// purpose:
// =====================================================================================
void IntTools_TopolTool::ComputeSamplePoints() 
{
  Standard_Real uinf, usup, vinf, vsup;
  uinf = myS->FirstUParameter();  
  usup = myS->LastUParameter();
  vinf = myS->FirstVParameter();  
  vsup = myS->LastVParameter();
  const Standard_Integer aMaxNbSample = 50;

  if (usup < uinf) { Standard_Real temp = uinf; uinf = usup; usup = temp; }
  if (vsup < vinf) { Standard_Real temp = vinf; vinf = vsup; vsup = temp; }
  Standard_Boolean isbiguinf, isbigusup, isbigvinf, isbigvsup;
  isbiguinf = Precision::IsNegativeInfinite(uinf);
  isbigusup = Precision::IsPositiveInfinite(usup);
  isbigvinf = Precision::IsNegativeInfinite(vinf);
  isbigvsup = Precision::IsPositiveInfinite(vsup);

  if(isbiguinf && isbigusup) {uinf = -1.e5; usup = 1.e5;}
  else if(isbiguinf) {uinf = usup - 2.e5;}
  else if(isbigusup) {usup = uinf + 2.e5;}

  if(isbigvinf && isbigvsup) {vinf = -1.e5; vsup = 1.e5;}
  else if(isbigvinf) {vinf = vsup - 2.e5;}
  else if(isbigvsup) {vsup = vinf + 2.e5;}
  myU0 = uinf;
  myV0 = vinf;

  Standard_Integer nbsu = 0,nbsv = 0;
  GeomAbs_SurfaceType typS = myS->GetType();

  switch(typS) {
  case GeomAbs_Plane: { 
    nbsu = 10; nbsv = 10;
  }
    break;
  case GeomAbs_Cylinder: {
    Standard_Real aRadius = myS->Cylinder().Radius();
    Standard_Real aMaxAngle = M_PI * 0.5;
    Standard_Real aDeflection = 1.e-02;

    if(aRadius > aDeflection) {
      aMaxAngle = ACos(1. - aDeflection / aRadius) * 2.;
    }
    if(aMaxAngle > Precision::Angular()) {
      nbsu = Standard_Integer((usup-uinf) / aMaxAngle);
    }
    nbsv = (Standard_Integer)(vsup-vinf);
    nbsv /= 10;

    if(nbsu < 2) nbsu = 2;
    if(nbsv < 2) nbsv = 2;

//    if(nbsu < 10) nbsu = 10;
//    if(nbsv < 10) nbsv = 10;
    if(nbsu > aMaxNbSample) nbsu = aMaxNbSample;
    if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
  }
    break;
  case GeomAbs_Cone: {
    gp_Cone aCone = myS->Cone();
    gp_Circ aCircle = ElSLib::ConeVIso(aCone.Position(), aCone.RefRadius(), aCone.SemiAngle(), vinf);
    Standard_Real aRadius = aCircle.Radius();
    aCircle = ElSLib::ConeVIso(aCone.Position(), aCone.RefRadius(), aCone.SemiAngle(), vsup);

    if(aRadius < aCircle.Radius())
      aRadius = aCircle.Radius();
    Standard_Real aMaxAngle = M_PI * 0.5;
    Standard_Real aDeflection = 1.e-02;

    if(aRadius > aDeflection) {
      aMaxAngle = ACos(1. - aDeflection / aRadius) * 2.;
    }

    if(aMaxAngle > Precision::Angular()) {
      nbsu = Standard_Integer((usup - uinf) / aMaxAngle);
    }
    nbsv = (Standard_Integer)(vsup - vinf);
    nbsv /= 10;

//     if(nbsu < 2) nbsu = 2;
//     if(nbsv < 2) nbsv = 2;

    if(nbsu < 10) nbsu = 10;
    if(nbsv < 10) nbsv = 10;
    if(nbsu > aMaxNbSample) nbsu = aMaxNbSample;
    if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
  }
    break;
  case GeomAbs_Sphere:
  case GeomAbs_Torus: {
    gp_Circ aCircle;
    Standard_Real aRadius1, aRadius2;

    if(typS == GeomAbs_Torus) {
      gp_Torus aTorus = myS->Torus();
      aCircle = ElSLib::TorusUIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), uinf);
      aRadius2 = aCircle.Radius();
      aCircle = ElSLib::TorusUIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), usup);
      aRadius2 = (aRadius2 < aCircle.Radius()) ? aCircle.Radius() : aRadius2;
      
      aCircle = ElSLib::TorusVIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), vinf);
      aRadius1 = aCircle.Radius();
      aCircle = ElSLib::TorusVIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), vsup);
      aRadius1 = (aRadius1 < aCircle.Radius()) ? aCircle.Radius() : aRadius1;
    }
    else {
      gp_Sphere aSphere = myS->Sphere();
      aRadius1 = aSphere.Radius();
      aRadius2 = aSphere.Radius();
    }
    Standard_Real aMaxAngle = M_PI * 0.5;
    Standard_Real aDeflection = 1.e-02;
    
    if(aRadius1 > aDeflection) {
      aMaxAngle = ACos(1. - aDeflection / aRadius1) * 2.;
    }
    
    if(aMaxAngle > Precision::Angular()) {
      nbsu = Standard_Integer((usup - uinf) / aMaxAngle);
    }
    aMaxAngle = M_PI * 0.5;

    if(aRadius2 > aDeflection) {
      aMaxAngle = ACos(1. - aDeflection / aRadius2) * 2.;
    }
    
    if(aMaxAngle > Precision::Angular()) {
      nbsv = Standard_Integer((vsup - vinf) / aMaxAngle);
    }
    if(nbsu < 10) nbsu = 10;
    if(nbsv < 10) nbsv = 10;
    if(nbsu > aMaxNbSample) nbsu = aMaxNbSample;
    if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
  }
    break;
  case GeomAbs_BezierSurface: {
    nbsv = 3 + myS->NbVPoles(); 
    nbsu = 3 + myS->NbUPoles();

    if(nbsu > 10 || nbsv > 10) {
      TColgp_Array2OfPnt array2(1, myS->NbUPoles(), 1, myS->NbVPoles());
      myS->Bezier()->Poles(array2);
      Analyse(array2, nbsu, nbsv);
    }

    if(nbsu < 10) nbsu = 10;
    if(nbsv < 10) nbsv = 10;
  }
    break;
  case GeomAbs_BSplineSurface: {
    nbsv = myS->NbVKnots();     nbsv *= myS->VDegree();     if(nbsv < 4) nbsv=4;    
    nbsu = myS->NbUKnots();     nbsu *= myS->UDegree();     if(nbsu < 4) nbsu=4;
    
    if(nbsu > 10 || nbsv > 10) {
      TColgp_Array2OfPnt array2(1, myS->NbUPoles(), 1, myS->NbVPoles());
      myS->BSpline()->Poles(array2);
      Analyse(array2, nbsu, nbsv);
    }
    if(nbsu < 10) nbsu = 10;
    if(nbsv < 10) nbsv = 10;
    // Check anisotropy
    Standard_Real anULen = (usup - uinf) / myS->UResolution(1.);
    Standard_Real anVLen = (vsup - vinf) / myS->VResolution(1.);
    Standard_Real aRatio = anULen / anVLen;
    if (aRatio >= 10.)
    {
      nbsu *= 2;
      nbsu = Min(nbsu, aMaxNbSample);
    }
    else if (aRatio <= 0.1 )
    {
      nbsv *= 2;
      nbsv = Min(nbsv, aMaxNbSample);
    }
  }
    break;
  case GeomAbs_SurfaceOfExtrusion: {
    nbsu = 15;
    nbsv = (Standard_Integer)(vsup - vinf);
    nbsv /= 10;
    if(nbsv < 15) nbsv = 15;
    if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
  }
    break;
  case GeomAbs_SurfaceOfRevolution: {
    nbsv = 15; nbsu = 15;
  }
    break;
  default: {
    nbsu = 10; nbsv = 10;
  }
    break;
  }
  myNbSmplU = nbsu;
  myNbSmplV = nbsv;

  myNbSamplesU = myNbSmplU;
  myNbSamplesV = myNbSmplV;

  myDU = (usup - uinf)/(myNbSmplU + 1);
  myDV = (vsup - vinf)/(myNbSmplV + 1);
}

// =====================================================================================
// function: NbSamplesU
// purpose:
// =====================================================================================
Standard_Integer IntTools_TopolTool::NbSamplesU() 
{
  if(myNbSmplU <= 0) {
    ComputeSamplePoints();
  }
  return myNbSmplU;
}

// =====================================================================================
// function: NbSamplesV
// purpose:
// =====================================================================================
Standard_Integer IntTools_TopolTool::NbSamplesV() 
{
  if(myNbSmplV <= 0) {
    ComputeSamplePoints();
  }
  return myNbSmplV;
}

// =====================================================================================
// function: NbSamples
// purpose:
// =====================================================================================
Standard_Integer IntTools_TopolTool::NbSamples() 
{
  if(myNbSmplU <= 0) { 
    ComputeSamplePoints();    
  }
  return(myNbSmplU * myNbSmplV);
}

// =====================================================================================
// function: SamplePoint
// purpose:
// =====================================================================================
void IntTools_TopolTool::SamplePoint(const Standard_Integer Index,
				     gp_Pnt2d&              P2d,
				     gp_Pnt&                P3d) 
{
  if (myUPars.IsNull())
    {
      if(myNbSmplU <= 0) { 
	ComputeSamplePoints();    
      }
      Standard_Integer iv = 1 + Index / myNbSmplU;
      Standard_Integer iu = 1 + Index - (iv - 1) * myNbSmplU;
      Standard_Real u = myU0 + iu * myDU;
      Standard_Real v = myV0 + iv * myDV;
      P2d.SetCoord(u, v);
      P3d = myS->Value(u, v);
    }
  else
    Adaptor3d_TopolTool::SamplePoint(Index, P2d, P3d);
}


//=======================================================================
// function : Analyse
// purpose  : 
//=======================================================================
void Analyse(const TColgp_Array2OfPnt& array2,
	     Standard_Integer&         theNbSamplesU,
	     Standard_Integer&         theNbSamplesV) 
{ 
  gp_Vec Vi,Vip1;
  Standard_Integer sh,nbch,i,j;
  const Standard_Integer nbup = array2.UpperRow() - array2.LowerRow() + 1;
  const Standard_Integer nbvp = array2.UpperCol() - array2.LowerCol() + 1;
  
  sh = 1;
  nbch = 0;
  if(nbvp>2) {

    for(i = array2.LowerRow(); i <= array2.UpperRow(); i++) {
      const gp_Pnt& A=array2.Value(i,1);
      const gp_Pnt& B=array2.Value(i,2);
      const gp_Pnt& C=array2.Value(i,3);
      Vi.SetCoord(C.X()-B.X()-B.X()+A.X(),
		  C.Y()-B.Y()-B.Y()+A.Y(),
		  C.Z()-B.Z()-B.Z()+A.Z());
      Standard_Integer locnbch=0;

      for(j = array2.LowerCol() + 2; j < array2.UpperCol();j++) {  //-- essai
	const gp_Pnt& Ax=array2.Value(i,j-1);
	const gp_Pnt& Bx=array2.Value(i,j);
	const gp_Pnt& Cx=array2.Value(i,j+1);
	Vip1.SetCoord(Cx.X()-Bx.X()-Bx.X()+Ax.X(),
		      Cx.Y()-Bx.Y()-Bx.Y()+Ax.Y(),
		      Cx.Z()-Bx.Z()-Bx.Z()+Ax.Z());
	Standard_Real pd = Vi.Dot(Vip1);
	Vi=Vip1;
	if(pd>1.0e-7 || pd<-1.0e-7) {  
	  if(pd>0) {  if(sh==-1) {   sh=1; locnbch++; 	}  }
	  else { 	if(sh==1) {  sh=-1; locnbch++; 	}  }
	}
      }
      if(locnbch>nbch) { 
	nbch=locnbch; 
      }
    }
  }
  theNbSamplesV = nbch+5;
  

  nbch=0;
  if(nbup > 2) { 
    for(j = array2.LowerCol(); j <= array2.UpperCol(); j++) { 
      const gp_Pnt& A=array2.Value(array2.LowerRow(),     j);
      const gp_Pnt& B=array2.Value(array2.LowerRow() + 1, j);
      const gp_Pnt& C=array2.Value(array2.LowerRow() + 2, j);
      Vi.SetCoord(C.X()-B.X()-B.X()+A.X(),
		  C.Y()-B.Y()-B.Y()+A.Y(),
		  C.Z()-B.Z()-B.Z()+A.Z());
      Standard_Integer locnbch=0;

      for(i = array2.LowerRow() + 2; i < array2.UpperRow(); i++) {  //-- essai
	const gp_Pnt& Ax=array2.Value(i-1,j);
	const gp_Pnt& Bx=array2.Value(i,j);
	const gp_Pnt& Cx=array2.Value(i+1,j);
	Vip1.SetCoord(Cx.X()-Bx.X()-Bx.X()+Ax.X(),
		    Cx.Y()-Bx.Y()-Bx.Y()+Ax.Y(),
		    Cx.Z()-Bx.Z()-Bx.Z()+Ax.Z());
	Standard_Real pd = Vi.Dot(Vip1);
	Vi=Vip1;
	if(pd>1.0e-7 || pd<-1.0e-7) {  
	  if(pd>0) {  if(sh==-1) {   sh=1; locnbch++; 	}  }
	  else { 	if(sh==1) {  sh=-1; locnbch++; 	}  }
	}
      }
      if(locnbch>nbch) nbch=locnbch;
    }  
  }
  theNbSamplesU = nbch+5;
}

//Modified IFV
//=======================================================================
//function : SamplePnts
//purpose  : 
//=======================================================================

void IntTools_TopolTool::SamplePnts(const Standard_Real theDefl, 
				    const Standard_Integer theNUmin,
				    const Standard_Integer theNVmin)
{ 
  Adaptor3d_TopolTool::SamplePnts(theDefl, theNUmin, theNVmin);

  myNbSmplU = Adaptor3d_TopolTool::NbSamplesU();
  myNbSmplV = Adaptor3d_TopolTool::NbSamplesV();

  myU0 = myUPars->Value(1);
  myV0 = myVPars->Value(1);

  myDU = (myUPars->Value(myNbSmplU) - myU0)/(myNbSmplU-1);  
  myDV = (myVPars->Value(myNbSmplV) - myV0)/(myNbSmplV-1);
}
Commit	Line	Data
973c2be1	1	// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e	2	//
973c2be1	3	// This file is part of Open CASCADE Technology software library.
b311480e	4	//
d5f74e42	5	// This library is free software; you can redistribute it and/or modify it under
d5f74e42	6	// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1	7	// by the Free Software Foundation, with special exception defined in the file
	8	// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
	9	// distribution for complete text of the license and disclaimer of any warranty.
b311480e	10	//
973c2be1	11	// Alternatively, this file may be used under the terms of Open CASCADE
973c2be1	12	// commercial license or contractual agreement.
b311480e	13
7fd59977	14
c22b52d6	15	#include <Adaptor3d_Surface.hxx>
42cf5bc1	16	#include <ElSLib.hxx>
7fd59977	17	#include <Geom_BezierSurface.hxx>
42cf5bc1	18	#include <Geom_BSplineSurface.hxx>
7fd59977	19	#include <gp_Circ.hxx>
7fd59977	20	#include <gp_Cone.hxx>
42cf5bc1	21	#include <gp_Pnt.hxx>
	22	#include <gp_Pnt2d.hxx>
	23	#include <IntTools_TopolTool.hxx>
	24	#include <Precision.hxx>
42cf5bc1	25	#include <Standard_NotImplemented.hxx>
	26	#include <Standard_Type.hxx>
	27	#include <TColgp_Array2OfPnt.hxx>
7fd59977	28	#include <TColStd_HArray1OfReal.hxx>
7fd59977	29
92efcf78	30	IMPLEMENT_STANDARD_RTTIEXT(IntTools_TopolTool,Adaptor3d_TopolTool)
92efcf78	31
7fd59977	32	static void Analyse(const TColgp_Array2OfPnt& array2,
	33	Standard_Integer& theNbSamplesU,
	34	Standard_Integer& theNbSamplesV);
	35
	36	// =====================================================================================
	37	// function: Constructor
	38	// purpose:
	39	// =====================================================================================
	40	IntTools_TopolTool::IntTools_TopolTool()
	41	{
	42	myNbSmplU = 0;
	43	myNbSmplV = 0;
	44	myDU = 1.;
	45	myDV = 1.;
	46	}
	47
	48	// =====================================================================================
	49	// function: Constructor
	50	// purpose:
	51	// =====================================================================================
c22b52d6	52	IntTools_TopolTool::IntTools_TopolTool(const Handle(Adaptor3d_Surface)& theSurface)
7fd59977	53	{
	54	Initialize(theSurface);
	55	myNbSmplU = 0;
	56	myNbSmplV = 0;
	57	myDU = 1.;
	58	myDV = 1.;
	59	}
	60
	61	// =====================================================================================
	62	// function: Initialize
	63	// purpose:
	64	// =====================================================================================
	65	void IntTools_TopolTool::Initialize()
	66	{
9775fa61	67	throw Standard_NotImplemented("IntTools_TopolTool::Initialize ()");
7fd59977	68	}
	69
	70	// =====================================================================================
	71	// function: Initialize
	72	// purpose:
	73	// =====================================================================================
c22b52d6	74	void IntTools_TopolTool::Initialize(const Handle(Adaptor3d_Surface)& theSurface)
7fd59977	75	{
	76	Adaptor3d_TopolTool::Initialize(theSurface);
	77	//myS = theSurface;
	78	myNbSmplU = 0;
	79	myNbSmplV = 0;
	80	myDU = 1.;
	81	myDV = 1.;
	82	}
	83
	84	// =====================================================================================
	85	// function: ComputeSamplePoints
	86	// purpose:
	87	// =====================================================================================
	88	void IntTools_TopolTool::ComputeSamplePoints()
	89	{
	90	Standard_Real uinf, usup, vinf, vsup;
	91	uinf = myS->FirstUParameter();
	92	usup = myS->LastUParameter();
	93	vinf = myS->FirstVParameter();
	94	vsup = myS->LastVParameter();
	95	const Standard_Integer aMaxNbSample = 50;
	96
	97	if (usup < uinf) { Standard_Real temp = uinf; uinf = usup; usup = temp; }
	98	if (vsup < vinf) { Standard_Real temp = vinf; vinf = vsup; vsup = temp; }
	99	Standard_Boolean isbiguinf, isbigusup, isbigvinf, isbigvsup;
	100	isbiguinf = Precision::IsNegativeInfinite(uinf);
	101	isbigusup = Precision::IsPositiveInfinite(usup);
	102	isbigvinf = Precision::IsNegativeInfinite(vinf);
	103	isbigvsup = Precision::IsPositiveInfinite(vsup);
	104
	105	if(isbiguinf && isbigusup) {uinf = -1.e5; usup = 1.e5;}
	106	else if(isbiguinf) {uinf = usup - 2.e5;}
	107	else if(isbigusup) {usup = uinf + 2.e5;}
	108
	109	if(isbigvinf && isbigvsup) {vinf = -1.e5; vsup = 1.e5;}
	110	else if(isbigvinf) {vinf = vsup - 2.e5;}
	111	else if(isbigvsup) {vsup = vinf + 2.e5;}
	112	myU0 = uinf;
	113	myV0 = vinf;
	114
5cbfdb41	115	Standard_Integer nbsu = 0,nbsv = 0;
7fd59977	116	GeomAbs_SurfaceType typS = myS->GetType();
	117
	118	switch(typS) {
	119	case GeomAbs_Plane: {
	120	nbsu = 10; nbsv = 10;
	121	}
	122	break;
	123	case GeomAbs_Cylinder: {
	124	Standard_Real aRadius = myS->Cylinder().Radius();
c6541a0c	125	Standard_Real aMaxAngle = M_PI * 0.5;
7fd59977	126	Standard_Real aDeflection = 1.e-02;
	127
	128	if(aRadius > aDeflection) {
	129	aMaxAngle = ACos(1. - aDeflection / aRadius) * 2.;
	130	}
	131	if(aMaxAngle > Precision::Angular()) {
	132	nbsu = Standard_Integer((usup-uinf) / aMaxAngle);
	133	}
	134	nbsv = (Standard_Integer)(vsup-vinf);
	135	nbsv /= 10;
	136
	137	if(nbsu < 2) nbsu = 2;
	138	if(nbsv < 2) nbsv = 2;
	139
	140	// if(nbsu < 10) nbsu = 10;
	141	// if(nbsv < 10) nbsv = 10;
	142	if(nbsu > aMaxNbSample) nbsu = aMaxNbSample;
	143	if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
	144	}
	145	break;
	146	case GeomAbs_Cone: {
	147	gp_Cone aCone = myS->Cone();
	148	gp_Circ aCircle = ElSLib::ConeVIso(aCone.Position(), aCone.RefRadius(), aCone.SemiAngle(), vinf);
	149	Standard_Real aRadius = aCircle.Radius();
	150	aCircle = ElSLib::ConeVIso(aCone.Position(), aCone.RefRadius(), aCone.SemiAngle(), vsup);
	151
	152	if(aRadius < aCircle.Radius())
	153	aRadius = aCircle.Radius();
c6541a0c	154	Standard_Real aMaxAngle = M_PI * 0.5;
7fd59977	155	Standard_Real aDeflection = 1.e-02;
	156
	157	if(aRadius > aDeflection) {
	158	aMaxAngle = ACos(1. - aDeflection / aRadius) * 2.;
	159	}
	160
	161	if(aMaxAngle > Precision::Angular()) {
	162	nbsu = Standard_Integer((usup - uinf) / aMaxAngle);
	163	}
	164	nbsv = (Standard_Integer)(vsup - vinf);
	165	nbsv /= 10;
	166
	167	// if(nbsu < 2) nbsu = 2;
	168	// if(nbsv < 2) nbsv = 2;
	169
	170	if(nbsu < 10) nbsu = 10;
	171	if(nbsv < 10) nbsv = 10;
	172	if(nbsu > aMaxNbSample) nbsu = aMaxNbSample;
	173	if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
	174	}
	175	break;
	176	case GeomAbs_Sphere:
	177	case GeomAbs_Torus: {
	178	gp_Circ aCircle;
	179	Standard_Real aRadius1, aRadius2;
	180
	181	if(typS == GeomAbs_Torus) {
	182	gp_Torus aTorus = myS->Torus();
	183	aCircle = ElSLib::TorusUIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), uinf);
	184	aRadius2 = aCircle.Radius();
	185	aCircle = ElSLib::TorusUIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), usup);
	186	aRadius2 = (aRadius2 < aCircle.Radius()) ? aCircle.Radius() : aRadius2;
	187
	188	aCircle = ElSLib::TorusVIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), vinf);
	189	aRadius1 = aCircle.Radius();
	190	aCircle = ElSLib::TorusVIso(aTorus.Position(), aTorus.MajorRadius(), aTorus.MinorRadius(), vsup);
	191	aRadius1 = (aRadius1 < aCircle.Radius()) ? aCircle.Radius() : aRadius1;
	192	}
	193	else {
	194	gp_Sphere aSphere = myS->Sphere();
	195	aRadius1 = aSphere.Radius();
	196	aRadius2 = aSphere.Radius();
	197	}
c6541a0c	198	Standard_Real aMaxAngle = M_PI * 0.5;
7fd59977	199	Standard_Real aDeflection = 1.e-02;
	200
	201	if(aRadius1 > aDeflection) {
	202	aMaxAngle = ACos(1. - aDeflection / aRadius1) * 2.;
	203	}
	204
	205	if(aMaxAngle > Precision::Angular()) {
	206	nbsu = Standard_Integer((usup - uinf) / aMaxAngle);
	207	}
c6541a0c	208	aMaxAngle = M_PI * 0.5;
7fd59977	209
	210	if(aRadius2 > aDeflection) {
	211	aMaxAngle = ACos(1. - aDeflection / aRadius2) * 2.;
	212	}
	213
	214	if(aMaxAngle > Precision::Angular()) {
	215	nbsv = Standard_Integer((vsup - vinf) / aMaxAngle);
	216	}
	217	if(nbsu < 10) nbsu = 10;
	218	if(nbsv < 10) nbsv = 10;
	219	if(nbsu > aMaxNbSample) nbsu = aMaxNbSample;
	220	if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
	221	}
	222	break;
	223	case GeomAbs_BezierSurface: {
	224	nbsv = 3 + myS->NbVPoles();
	225	nbsu = 3 + myS->NbUPoles();
	226
	227	if(nbsu > 10 \|\| nbsv > 10) {
	228	TColgp_Array2OfPnt array2(1, myS->NbUPoles(), 1, myS->NbVPoles());
	229	myS->Bezier()->Poles(array2);
	230	Analyse(array2, nbsu, nbsv);
	231	}
	232
	233	if(nbsu < 10) nbsu = 10;
	234	if(nbsv < 10) nbsv = 10;
	235	}
	236	break;
	237	case GeomAbs_BSplineSurface: {
	238	nbsv = myS->NbVKnots(); nbsv *= myS->VDegree(); if(nbsv < 4) nbsv=4;
	239	nbsu = myS->NbUKnots(); nbsu *= myS->UDegree(); if(nbsu < 4) nbsu=4;
	240
	241	if(nbsu > 10 \|\| nbsv > 10) {
	242	TColgp_Array2OfPnt array2(1, myS->NbUPoles(), 1, myS->NbVPoles());
	243	myS->BSpline()->Poles(array2);
	244	Analyse(array2, nbsu, nbsv);
	245	}
	246	if(nbsu < 10) nbsu = 10;
	247	if(nbsv < 10) nbsv = 10;
79e9ba31	248	// Check anisotropy
	249	Standard_Real anULen = (usup - uinf) / myS->UResolution(1.);
	250	Standard_Real anVLen = (vsup - vinf) / myS->VResolution(1.);
	251	Standard_Real aRatio = anULen / anVLen;
	252	if (aRatio >= 10.)
	253	{
	254	nbsu *= 2;
	255	nbsu = Min(nbsu, aMaxNbSample);
	256	}
	257	else if (aRatio <= 0.1 )
	258	{
	259	nbsv *= 2;
	260	nbsv = Min(nbsv, aMaxNbSample);
	261	}
7fd59977	262	}
	263	break;
	264	case GeomAbs_SurfaceOfExtrusion: {
	265	nbsu = 15;
	266	nbsv = (Standard_Integer)(vsup - vinf);
	267	nbsv /= 10;
	268	if(nbsv < 15) nbsv = 15;
	269	if(nbsv > aMaxNbSample) nbsv = aMaxNbSample;
	270	}
	271	break;
	272	case GeomAbs_SurfaceOfRevolution: {
	273	nbsv = 15; nbsu = 15;
	274	}
	275	break;
	276	default: {
	277	nbsu = 10; nbsv = 10;
	278	}
	279	break;
	280	}
	281	myNbSmplU = nbsu;
	282	myNbSmplV = nbsv;
	283
	284	myNbSamplesU = myNbSmplU;
	285	myNbSamplesV = myNbSmplV;
	286
	287	myDU = (usup - uinf)/(myNbSmplU + 1);
	288	myDV = (vsup - vinf)/(myNbSmplV + 1);
	289	}
	290
	291	// =====================================================================================
	292	// function: NbSamplesU
	293	// purpose:
	294	// =====================================================================================
	295	Standard_Integer IntTools_TopolTool::NbSamplesU()
	296	{
	297	if(myNbSmplU <= 0) {
	298	ComputeSamplePoints();
	299	}
	300	return myNbSmplU;
	301	}
	302
	303	// =====================================================================================
	304	// function: NbSamplesV
	305	// purpose:
	306	// =====================================================================================
	307	Standard_Integer IntTools_TopolTool::NbSamplesV()
	308	{
	309	if(myNbSmplV <= 0) {
	310	ComputeSamplePoints();
	311	}
	312	return myNbSmplV;
	313	}
	314
	315	// =====================================================================================
	316	// function: NbSamples
	317	// purpose:
	318	// =====================================================================================
	319	Standard_Integer IntTools_TopolTool::NbSamples()
	320	{
	321	if(myNbSmplU <= 0) {
	322	ComputeSamplePoints();
	323	}
	324	return(myNbSmplU * myNbSmplV);
	325	}
326
327	// =====================================================================================
328	// function: SamplePoint
329	// purpose:
330	// =====================================================================================
331	void IntTools_TopolTool::SamplePoint(const Standard_Integer Index,
332	gp_Pnt2d& P2d,
333	gp_Pnt& P3d)
334	{
335	if (myUPars.IsNull())
336	{
337	if(myNbSmplU <= 0) {
338	ComputeSamplePoints();
339	}
340	Standard_Integer iv = 1 + Index / myNbSmplU;
341	Standard_Integer iu = 1 + Index - (iv - 1) * myNbSmplU;
342	Standard_Real u = myU0 + iu * myDU;
343	Standard_Real v = myV0 + iv * myDV;
344	P2d.SetCoord(u, v);
345	P3d = myS->Value(u, v);
346	}
347	else
348	Adaptor3d_TopolTool::SamplePoint(Index, P2d, P3d);
349	}
350
351
352	//=======================================================================
353	// function : Analyse
354	// purpose :
355	//=======================================================================
356	void Analyse(const TColgp_Array2OfPnt& array2,
357	Standard_Integer& theNbSamplesU,
358	Standard_Integer& theNbSamplesV)
359	{
360	gp_Vec Vi,Vip1;
361	Standard_Integer sh,nbch,i,j;
362	const Standard_Integer nbup = array2.UpperRow() - array2.LowerRow() + 1;
363	const Standard_Integer nbvp = array2.UpperCol() - array2.LowerCol() + 1;
364
365	sh = 1;
366	nbch = 0;
367	if(nbvp>2) {
368
369	for(i = array2.LowerRow(); i <= array2.UpperRow(); i++) {
370	const gp_Pnt& A=array2.Value(i,1);
371	const gp_Pnt& B=array2.Value(i,2);
372	const gp_Pnt& C=array2.Value(i,3);
373	Vi.SetCoord(C.X()-B.X()-B.X()+A.X(),
374	C.Y()-B.Y()-B.Y()+A.Y(),
375	C.Z()-B.Z()-B.Z()+A.Z());
376	Standard_Integer locnbch=0;
377
378	for(j = array2.LowerCol() + 2; j < array2.UpperCol();j++) { //-- essai
379	const gp_Pnt& Ax=array2.Value(i,j-1);
380	const gp_Pnt& Bx=array2.Value(i,j);
381	const gp_Pnt& Cx=array2.Value(i,j+1);
382	Vip1.SetCoord(Cx.X()-Bx.X()-Bx.X()+Ax.X(),
383	Cx.Y()-Bx.Y()-Bx.Y()+Ax.Y(),
384	Cx.Z()-Bx.Z()-Bx.Z()+Ax.Z());
385	Standard_Real pd = Vi.Dot(Vip1);
386	Vi=Vip1;
387	if(pd>1.0e-7 \|\| pd<-1.0e-7) {
388	if(pd>0) { if(sh==-1) { sh=1; locnbch++; } }
389	else { if(sh==1) { sh=-1; locnbch++; } }
390	}
391	}
392	if(locnbch>nbch) {
393	nbch=locnbch;
394	}
395	}
396	}
397	theNbSamplesV = nbch+5;
398
399
400	nbch=0;
401	if(nbup > 2) {
402	for(j = array2.LowerCol(); j <= array2.UpperCol(); j++) {
403	const gp_Pnt& A=array2.Value(array2.LowerRow(), j);
404	const gp_Pnt& B=array2.Value(array2.LowerRow() + 1, j);
405	const gp_Pnt& C=array2.Value(array2.LowerRow() + 2, j);
406	Vi.SetCoord(C.X()-B.X()-B.X()+A.X(),
407	C.Y()-B.Y()-B.Y()+A.Y(),
408	C.Z()-B.Z()-B.Z()+A.Z());
409	Standard_Integer locnbch=0;
410
411	for(i = array2.LowerRow() + 2; i < array2.UpperRow(); i++) { //-- essai
412	const gp_Pnt& Ax=array2.Value(i-1,j);
413	const gp_Pnt& Bx=array2.Value(i,j);
414	const gp_Pnt& Cx=array2.Value(i+1,j);
415	Vip1.SetCoord(Cx.X()-Bx.X()-Bx.X()+Ax.X(),
416	Cx.Y()-Bx.Y()-Bx.Y()+Ax.Y(),
417	Cx.Z()-Bx.Z()-Bx.Z()+Ax.Z());
418	Standard_Real pd = Vi.Dot(Vip1);
419	Vi=Vip1;
420	if(pd>1.0e-7 \|\| pd<-1.0e-7) {
421	if(pd>0) { if(sh==-1) { sh=1; locnbch++; } }
422	else { if(sh==1) { sh=-1; locnbch++; } }
423	}
424	}
425	if(locnbch>nbch) nbch=locnbch;
426	}
427	}
428	theNbSamplesU = nbch+5;
429	}
430
431	//Modified IFV
432	//=======================================================================
433	//function : SamplePnts
434	//purpose :
435	//=======================================================================
436
437	void IntTools_TopolTool::SamplePnts(const Standard_Real theDefl,
438	const Standard_Integer theNUmin,
439	const Standard_Integer theNVmin)
440	{
441	Adaptor3d_TopolTool::SamplePnts(theDefl, theNUmin, theNVmin);
442
443	myNbSmplU = Adaptor3d_TopolTool::NbSamplesU();
444	myNbSmplV = Adaptor3d_TopolTool::NbSamplesV();
445
446	myU0 = myUPars->Value(1);
447	myV0 = myVPars->Value(1);
448
449	myDU = (myUPars->Value(myNbSmplU) - myU0)/(myNbSmplU-1);
5c48956f	450	myDV = (myVPars->Value(myNbSmplV) - myV0)/(myNbSmplV-1);
7fd59977	451	}