OpenCascade/occt
1
0
Fork 0
mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-04-21 10:13:43 +03:00
Code
occt/src/Approx/Approx_SameParameter.cxx
aml 31e0b8e84c 0025770: Possible "invalid memory access" 
Memory problems fixed.
2015-02-05 14:56:43 +03:00

909 lines
27 KiB
C++
Raw Blame History

// Created on: 1995-06-06
// Created by: Xavier BENVENISTE
// Copyright (c) 1995-1999 Matra Datavision
// 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.
// Modified by skv - Wed Jun 2 11:49:59 2004 OCC5898
#include <Approx_SameParameter.ixx>
#include <TColStd_Array1OfReal.hxx>
#include <BSplCLib.hxx>
#include <Adaptor3d_CurveOnSurface.hxx>
#include <Geom2dAdaptor_Curve.hxx>
#include <Geom2dAdaptor_HCurve.hxx>
#include <GeomAdaptor_Curve.hxx>
#include <GeomAdaptor_HCurve.hxx>
#include <GeomAdaptor_Surface.hxx>
#include <GeomAdaptor_HSurface.hxx>
#include <GCPnts_QuasiUniformDeflection.hxx>
#include <Extrema_LocateExtPC.hxx>
#include <AdvApprox_ApproxAFunction.hxx>
#include <GeomLib_MakeCurvefromApprox.hxx>
#include <Precision.hxx>
#include <Extrema_ExtPC.hxx>
#ifdef OCCT_DEBUG
#ifdef DRAW
#include <DrawTrSurf.hxx>
#endif
#include <Geom2d_BSplineCurve.hxx>
#include <stdio.h>
static Standard_Boolean Voir = Standard_False;
static Standard_Boolean AffichFw = Standard_False;
static Standard_Integer NbCurve = 0;
#endif
//
// allows testing if Extrema produces correct results/
static void ProjectPointOnCurve(const Standard_Real InitValue,
const gp_Pnt APoint,
const Standard_Real Tolerance,
const Standard_Integer NumIteration,
const Adaptor3d_Curve& Curve,
Standard_Boolean& Status,
Standard_Real& Result)
{
Standard_Integer num_iter = 0,
not_done = 1,
ii ;
gp_Pnt a_point ;
gp_Vec vector,
d1,
d2 ;
Standard_Real func,
func_derivative,
param = InitValue ;
Status = Standard_False ;
Standard_Real Toler = 1.0e-12;
do {
num_iter += 1 ;
Curve.D2(param,
a_point,
d1,
d2) ;
for (ii = 1 ; ii <= 3 ; ii++) {
vector.SetCoord(ii, APoint.Coord(ii) - a_point.Coord(ii)) ;
}
func = vector.Dot(d1) ;
func_derivative = vector.Dot(d2) ;
func_derivative -= d1.Dot(d1) ;
if ( Abs(func) < Tolerance * d1.Magnitude()) {
not_done = 0 ;
Status = Standard_True ;
}
else
{ // fixing a bug PRO18577 : avoid divizion by zero
if( Abs(func_derivative) > Toler ) {
param -= func / func_derivative ;
}
param = Max(param,Curve.FirstParameter()) ;
param = Min(param,Curve.LastParameter()) ;
//Status = Standard_True ;
}
}
while (not_done && num_iter <= NumIteration) ;
Result = param ;
}
//=======================================================================
//class : Approx_SameParameter_Evaluator
//purpose :
//=======================================================================
class Approx_SameParameter_Evaluator : public AdvApprox_EvaluatorFunction
{
public:
Approx_SameParameter_Evaluator (const TColStd_Array1OfReal& theFlatKnots,
const TColStd_Array1OfReal& thePoles,
const Handle(Adaptor2d_HCurve2d)& theHCurve2d)
: FlatKnots(theFlatKnots), Poles(thePoles), HCurve2d(theHCurve2d) {}
virtual void Evaluate (Standard_Integer *Dimension,
Standard_Real StartEnd[2],
Standard_Real *Parameter,
Standard_Integer *DerivativeRequest,
Standard_Real *Result, // [Dimension]
Standard_Integer *ErrorCode);
private:
const TColStd_Array1OfReal& FlatKnots;
const TColStd_Array1OfReal& Poles;
Handle(Adaptor2d_HCurve2d) HCurve2d;
};
void Approx_SameParameter_Evaluator::Evaluate (Standard_Integer *,/*Dimension*/
Standard_Real /*StartEnd*/[2],
Standard_Real *Parameter,
Standard_Integer *DerivativeRequest,
Standard_Real *Result,
Standard_Integer *ReturnCode)
{
gp_Pnt2d Point ;
gp_Vec2d Vector ;
Standard_Integer extrap_mode[2] ;
extrap_mode[0] = extrap_mode[1] = 3;
Standard_Real eval_result[2] ;
Standard_Real *PolesArray =
(Standard_Real *) &Poles(Poles.Lower()) ;
//
// evaluate the 1D bspline that represents the change in parameterization
//
BSplCLib::Eval(*Parameter,
Standard_False,
*DerivativeRequest,
extrap_mode[0],
3,
FlatKnots,
1,
PolesArray[0],
eval_result[0]) ;
if (*DerivativeRequest == 0){
HCurve2d->D0(eval_result[0],Point);
Point.Coord(Result[0],Result[1]);
}
else if (*DerivativeRequest == 1){
HCurve2d->D1(eval_result[0], Point, Vector);
Vector.Multiply(eval_result[1]);
Vector.Coord(Result[0],Result[1]);
}
ReturnCode[0] = 0 ;
}
static Standard_Real ComputeTolReached(const Handle(Adaptor3d_HCurve)& c3d,
const Adaptor3d_CurveOnSurface& cons,
const Standard_Integer nbp)
{
Standard_Real d2 = 0.;
const Standard_Real first = c3d->FirstParameter();
const Standard_Real last = c3d->LastParameter();
for(Standard_Integer i = 0; i <= nbp; i++){
Standard_Real t = IntToReal(i)/IntToReal(nbp);
Standard_Real u = first*(1.-t) + last*t;
gp_Pnt Pc3d = c3d->Value(u);
gp_Pnt Pcons = cons.Value(u);
if (Precision::IsInfinite(Pcons.X()) ||
Precision::IsInfinite(Pcons.Y()) ||
Precision::IsInfinite(Pcons.Z())) {
d2=Precision::Infinite();
break;
}
Standard_Real temp = Pc3d.SquareDistance(Pcons);
if(temp > d2) d2 = temp;
}
d2 = 1.5*sqrt(d2);
if(d2<1.e-7) d2 = 1.e-7;
return d2;
}
static Standard_Boolean Check(const TColStd_Array1OfReal& FlatKnots,
const TColStd_Array1OfReal& Poles,
const Standard_Integer nbp,
const TColStd_Array1OfReal& pc3d,
// const TColStd_Array1OfReal& pcons,
const TColStd_Array1OfReal& ,
const Handle(Adaptor3d_HCurve)& c3d,
const Adaptor3d_CurveOnSurface& cons,
Standard_Real& tol,
const Standard_Real oldtol)
{
Standard_Real d = tol;
Standard_Integer extrap_mode[2] ;
extrap_mode[0] = extrap_mode[1] = 3;
Standard_Integer i;
#ifdef OCCT_DEBUG
if (Voir) {
cout<<endl;
cout<<"Control the change of variable : "<<endl;
cout<<"yawn mesured by projection : "<<d<<endl;
cout<<"Number of points : "<<nbp<<endl;
}
#endif
#if 0
Standard_Real glis = 0., dglis = 0.;
for(i = 1; i <= nbp; i++){
Standard_Real tc3d = pc3d(i);
gp_Pnt Pc3d = c3d->Value(tc3d);
Standard_Real tcons;
BSplCLib::Eval(tc3d,Standard_False,0,extrap_mode[0],
3,FlatKnots,1, (Standard_Real&)Poles(1),tcons);
gp_Pnt Pcons = cons.Value(tcons);
Standard_Real temp = Pc3d.SquareDistance(Pcons);
if(temp >= dglis) dglis = temp;
temp = Abs(tcons-pcons(i));
if(temp >= glis) glis = temp;
}
dglis = sqrt(dglis);
#ifdef OCCT_DEBUG
if ( Voir) {
cout<<"shift of parameter to the imposed points : "<<glis<<endl;
cout<<"shift distance at the imposed points : "<<dglis<<endl;
}
#endif
dglis = 0.;
for(i = 1; i < nbp; i++){
Standard_Real tc3d = 0.5*(pc3d(i)+pc3d(i+1));
gp_Pnt Pc3d = c3d->Value(tc3d);
Standard_Real tcons;
BSplCLib::Eval(tc3d,Standard_False,0,extrap_mode[0],
3,FlatKnots,1, (Standard_Real&)Poles(1),tcons);
gp_Pnt Pcons = cons.Value(tcons);
Standard_Real temp = Pc3d.SquareDistance(Pcons);
if(temp >= dglis) dglis = temp;
}
dglis = sqrt(dglis);
#ifdef OCCT_DEBUG
if (Voir)
cout<<"distance de glissement en milieu d intervals : "<<dglis<<endl;
#endif
#endif
Standard_Real d2 = 0.;
Standard_Integer nn = 2*nbp;
Standard_Real unsurnn = 1./nn;
// Modified by skv - Wed Jun 2 11:49:59 2004 OCC5898 Begin
// Correction of the interval of valid values. This condition has no sensible
// grounds. But it is better then the old one (which is commented out) because
// it fixes the bug OCC5898. To develop more or less sensible criterion it is
// necessary to deeply investigate this problem which is not possible in frames
// of debugging.
// Standard_Real firstborne= 2*pc3d(1)-pc3d(nbp);
// Standard_Real lastborne= 2*pc3d(nbp)-pc3d(1);
Standard_Real firstborne= 3.*pc3d(1) - 2.*pc3d(nbp);
Standard_Real lastborne = 3.*pc3d(nbp) - 2.*pc3d(1);
// Modified by skv - Wed Jun 2 11:50:03 2004 OCC5898 End
//jgv
Standard_Real FirstPar = cons.FirstParameter();
Standard_Real LastPar = cons.LastParameter();
if (firstborne < FirstPar)
firstborne = FirstPar;
if (lastborne > LastPar)
lastborne = LastPar;
/////
for(i = 0; i <= nn; i++){
Standard_Real t = unsurnn*i;
Standard_Real tc3d = pc3d(1)*(1.-t) + pc3d(nbp)*t;
gp_Pnt Pc3d = c3d->Value(tc3d);
Standard_Real tcons;
BSplCLib::Eval(tc3d,Standard_False,0,extrap_mode[0],
3,FlatKnots,1, (Standard_Real&)Poles(1),tcons);
if (tcons < firstborne || tcons > lastborne) {
tol=Precision::Infinite();
return Standard_False;
}
gp_Pnt Pcons = cons.Value(tcons);
Standard_Real temp = Pc3d.SquareDistance(Pcons);
if(temp > d2) d2 = temp;
}
tol = sqrt(d2);
#ifdef OCCT_DEBUG
if (Voir)
cout<<"distance max on "<<nn<<" points : "<<tol<<endl<<endl;
#endif
return ((tol <= d) || (tol > 0.8 * oldtol));
}
//=======================================================================
//function : Approx_SameParameter
//purpose :
//=======================================================================
Approx_SameParameter::Approx_SameParameter(const Handle(Geom_Curve)& C3D,
const Handle(Geom2d_Curve)& C2D,
const Handle(Geom_Surface)& S,
const Standard_Real Tol):
mySameParameter(Standard_True), myDone(Standard_False)
{
myHCurve2d = new Geom2dAdaptor_HCurve(C2D);
myC3d = new GeomAdaptor_HCurve(C3D);
mySurf = new GeomAdaptor_HSurface(S);
Build(Tol);
}
//=======================================================================
//function : Approx_SameParameter
//purpose :
//=======================================================================
Approx_SameParameter::Approx_SameParameter(const Handle(Adaptor3d_HCurve)& C3D,
const Handle(Geom2d_Curve)& C2D,
const Handle(Adaptor3d_HSurface)& S,
const Standard_Real Tol):
mySameParameter(Standard_True), myDone(Standard_False)
{
myC3d = C3D;
mySurf = S;
myHCurve2d = new Geom2dAdaptor_HCurve(C2D);
Build(Tol);
}
//=======================================================================
//function : Approx_SameParameter
//purpose :
//=======================================================================
Approx_SameParameter::Approx_SameParameter(const Handle(Adaptor3d_HCurve)& C3D,
const Handle(Adaptor2d_HCurve2d)& C2D,
const Handle(Adaptor3d_HSurface)& S,
const Standard_Real Tol):
mySameParameter(Standard_True), myDone(Standard_False)
{
myC3d = C3D;
mySurf = S;
myHCurve2d = C2D;
Build(Tol);
}
//=======================================================================
//function : Build
//purpose :
//=======================================================================
void Approx_SameParameter::Build(const Standard_Real Tolerance)
{
const Standard_Real anErrorMAX = 1.0e15;
const Standard_Integer aMaxArraySize = 1000;
const Standard_Integer NCONTROL = 22;
Standard_Integer ii ;
Adaptor3d_CurveOnSurface CurveOnSurface(myHCurve2d,mySurf);
Standard_Real fcons = CurveOnSurface.FirstParameter();
Standard_Real lcons = CurveOnSurface.LastParameter();
Standard_Real fc3d = myC3d->FirstParameter();
Standard_Real lc3d = myC3d->LastParameter();
GeomAbs_Shape Continuity = myHCurve2d->Continuity();
if(Continuity > GeomAbs_C1) Continuity = GeomAbs_C1;
//Control tangents at the extremities to know if the
//reparametring is possible and calculate the tangents
//at the extremities of the function of change of variable.
Standard_Real tangent[2] = { 0.0, 0.0 };
gp_Pnt Pcons,Pc3d;
gp_Vec Vcons,Vc3d;
Standard_Real Tol = Tolerance;
Standard_Real Tol2 = Tol * Tol;
Standard_Real Tolp = myC3d->Resolution(Tol), deltamin = 50*Tolp;
Standard_Real besttol2 = Tol2;
Standard_Boolean extrok = 0;
extrok = 1;
CurveOnSurface.D1(fcons,Pcons,Vcons);
myC3d->D1(fc3d,Pc3d,Vc3d);
Standard_Real dist2 = Pcons.SquareDistance(Pc3d);
Standard_Real dmax2 = dist2;
Standard_Real magVcons = Vcons.Magnitude();
if (magVcons > 1.e-12){
tangent[0] = Vc3d.Magnitude() / magVcons;
}
else extrok = 0;
CurveOnSurface.D1(lcons,Pcons,Vcons);
myC3d->D1(lc3d,Pc3d,Vc3d);
dist2 = Pcons.SquareDistance(Pc3d);
if(dist2 > dmax2) dmax2 = dist2;
magVcons = Vcons.Magnitude();
if (magVcons > 1.e-12){
tangent[1] = Vc3d.Magnitude() / magVcons;
}
else extrok = 0;
if(dmax2 > besttol2) besttol2 = dmax2;
//Take a multiple of the sample pof CheckShape,
//at least the control points will be correct. No comment!!!
#ifdef OCCT_DEBUG
Standard_Integer nbcoups = 0;
#endif
Standard_Boolean interpolok = 0;
Standard_Real tolsov = 1.e200;
//Take parameters with constant step on the curve on surface
//and on curve 3d.
Standard_Real deltacons = lcons - fcons;
deltacons /= (NCONTROL);
Standard_Real deltac3d = lc3d - fc3d;
deltac3d /= (NCONTROL);
Standard_Real wcons = fcons;
Standard_Real wc3d = fc3d;
Standard_Real qpcons[aMaxArraySize], qnewpcons[aMaxArraySize],
qpc3d[aMaxArraySize], qnewpc3d[aMaxArraySize];
Standard_Real * pcons = qpcons; Standard_Real * newpcons = qnewpcons;
Standard_Real * pc3d = qpc3d; Standard_Real * newpc3d = qnewpc3d;
for ( ii = 0 ; ii < NCONTROL; ii++) {
pcons[ii] = wcons;
pc3d[ii] = wc3d;
wcons += deltacons;
wc3d += deltac3d;
}
pcons[NCONTROL] = lcons;
pc3d[NCONTROL] = lc3d;
Standard_Integer New_NCONTROL = NCONTROL;
if(Continuity < GeomAbs_C1) {
Standard_Integer NbInt = myHCurve2d->NbIntervals(GeomAbs_C1) + 1;
TColStd_Array1OfReal Param_de_decoupeC1 (1, NbInt);
myHCurve2d->Intervals(Param_de_decoupeC1, GeomAbs_C1);
TColStd_SequenceOfReal new_par;
Standard_Integer inter = 1;
ii =1;
new_par.Append(fcons);
while(inter <= NbInt && Param_de_decoupeC1(inter) <= fcons + deltamin) inter++;
while(NbInt > 0 && Param_de_decoupeC1(NbInt) >= lcons - deltamin) NbInt--;
while(inter <= NbInt || (ii < NCONTROL && inter <= Param_de_decoupeC1.Length()) ) {
if(Param_de_decoupeC1(inter) < pcons[ii]) {
new_par.Append(Param_de_decoupeC1(inter));
if((pcons[ii] - Param_de_decoupeC1(inter)) <= deltamin) {
ii++;
if(ii > NCONTROL) {ii = NCONTROL;}
}
inter++;
}
else {
if((Param_de_decoupeC1(inter) - pcons[ii]) > deltamin) {
new_par.Append(pcons[ii]);
}
ii++;
}
}
new_par.Append(lcons);
New_NCONTROL = new_par.Length() - 1;
// Simple protection if New_NCONTROL > allocated elements in array but one
// aMaxArraySize - 1 index may be filled after projection.
if (New_NCONTROL > aMaxArraySize - 1) {
mySameParameter = Standard_False;
return;
}
for(ii = 1; ii <= New_NCONTROL; ii++){
pcons[ii] = pc3d[ii] = new_par.Value(ii + 1);
}
pc3d[New_NCONTROL] = lc3d;
}
Extrema_LocateExtPC Projector;
Projector.Initialize(myC3d->Curve(),fc3d,lc3d,Tol);
Standard_Integer count = 1;
Standard_Real previousp = fc3d, initp=0, curp;//, deltamin = 50*Tolp;
Standard_Real bornesup = lc3d - deltamin;
Standard_Boolean projok = 0,
use_parameter ;
for (ii = 1; ii < New_NCONTROL; ii++){
CurveOnSurface.D0(pcons[ii],Pcons);
myC3d->D0(pc3d[ii],Pc3d);
dist2 = Pcons.SquareDistance(Pc3d);
use_parameter = (dist2 <= Tol2 && (pc3d[ii] > pc3d[count-1] + deltamin)) ;
if(use_parameter) {
if(dist2 > dmax2) dmax2 = dist2;
initp = previousp = pc3d[count] = pc3d[ii];
pcons[count] = pcons[ii];
count++;
}
else {
if(!projok) initp = pc3d[ii];
projok = mySameParameter = Standard_False;
Projector.Perform(Pcons, initp);
if (Projector.IsDone()) {
curp = Projector.Point().Parameter();
Standard_Real dist_2 = Projector.SquareDistance();
if(dist_2 > besttol2) besttol2 = dist_2;
projok = 1;
}
else
{
ProjectPointOnCurve(initp,Pcons,Tol,30,myC3d->Curve(),projok,curp);
}
if(projok)
{
if(curp > previousp + deltamin && curp < bornesup){
initp = previousp = pc3d[count] = curp;
pcons[count] = pcons[ii];
count++;
}
}
else
{
Extrema_ExtPC PR(Pcons,myC3d->Curve(),fc3d,lc3d,Tol);
if(PR.IsDone())
{
const Standard_Integer aNbExt = PR.NbExt();
if(aNbExt > 0)
{
Standard_Integer anIndMin = 0;
Standard_Real aDistMin = RealLast();
for(Standard_Integer i = 1; i <= aNbExt; i++)
{
const gp_Pnt &aP = PR.Point(i).Value();
Standard_Real aDist2 = aP.SquareDistance(Pcons);
if(aDist2 < aDistMin)
{
aDistMin = aDist2;
anIndMin = i;
}
}
curp = PR.Point(anIndMin).Parameter();
if(curp > previousp + deltamin && curp < bornesup)
{
initp = previousp = pc3d[count] = curp;
pcons[count] = pcons[ii];
count++;
projok = Standard_True;
}
}
}
}
if(!projok)
{
//Projector
#ifdef OCCT_DEBUG
// JAG
cout << "Projection not done" << endl;
#endif
}
}
}
if(mySameParameter){
myTolReached = 1.5*sqrt(dmax2);
return;
}
if(!extrok) { // If not already SameP and tangent to mill, abandon.
mySameParameter = Standard_False;
#ifdef OCCT_DEBUG
cout<<"SameParameter problem : zero tangent to extremities"<<endl;
#endif
return;
}
pcons[count] = lcons;
pc3d[count] = lc3d;
#ifdef OCCT_DEBUG
if (AffichFw) {
char Name[17];
Name[0]='\0';
TColgp_Array1OfPnt2d DEBP2d (0,count);
TColStd_Array1OfInteger DEBMults(0,count);
DEBMults.Init(1); DEBMults(0) = 2; DEBMults(count) = 2;
TColStd_Array1OfReal DEBKnots(0,count);
for (Standard_Integer DEBi = 0; DEBi <= count; DEBi++) {
DEBKnots(DEBi) = DEBi;
DEBP2d (DEBi) = gp_Pnt2d(pc3d[DEBi],pcons[DEBi]);
}
Handle(Geom2d_BSplineCurve) DEBBS =
new Geom2d_BSplineCurve(DEBP2d,DEBKnots,DEBMults,1);
Sprintf(Name,"DEBC2d_%d",++NbCurve);
#ifdef DRAW
DrawTrSurf::Set(Name,DEBBS);
#endif
}
#endif
Standard_Boolean hasCountChanged = Standard_False;
while(!interpolok)
{
// The tables and their limits for the interpolation.
Standard_Integer num_knots = count + 7;
Standard_Integer num_poles = count + 3;
TColStd_Array1OfReal Paramc3d(*pc3d,1,count+1);
TColStd_Array1OfReal Paramcons(*pcons,1,count+1);
TColStd_Array1OfInteger ContactOrder(1,num_poles) ;
TColStd_Array1OfReal Poles(1,num_poles) ;
TColStd_Array1OfReal InterpolationParameters(1,num_poles) ;
TColStd_Array1OfReal FlatKnots(1,num_knots) ;
// Fill tables taking attention to end values.
ContactOrder.Init(0);
ContactOrder(2) = ContactOrder(num_poles - 1) = 1;
FlatKnots(1) = FlatKnots(2) = FlatKnots(3) = FlatKnots(4) = fc3d;
FlatKnots(num_poles + 1) = FlatKnots(num_poles + 2) =
FlatKnots(num_poles + 3) = FlatKnots(num_poles + 4) = lc3d;
Poles(1) = fcons; Poles(num_poles) = lcons;
Poles(2) = tangent[0]; Poles(num_poles - 1) = tangent[1];
InterpolationParameters(1) = InterpolationParameters(2) = fc3d;
InterpolationParameters(num_poles - 1) = InterpolationParameters(num_poles) = lc3d;
for (ii = 3; ii <= num_poles - 2; ii++) {
Poles(ii) = Paramcons(ii - 1);
InterpolationParameters(ii) = FlatKnots(ii+2) = Paramc3d(ii - 1);
}
Standard_Integer inversion_problem;
BSplCLib::Interpolate(3,FlatKnots,InterpolationParameters,ContactOrder,
1,Poles(1),inversion_problem);
if(inversion_problem) {
Standard_ConstructionError::Raise();
}
//-------------------------------------------
#ifdef OCCT_DEBUG
if (AffichFw) {
nbcoups ++;
char Name[17];
Name[0] = '\0';
Standard_Integer nnn = 100;
TColgp_Array1OfPnt2d DEBP2d (0,nnn);
TColStd_Array1OfInteger DEBMults(0,nnn);
DEBMults.Init(1); DEBMults(0) = 2; DEBMults(nnn) = 2;
TColStd_Array1OfReal DEBKnots(0,nnn);
Standard_Real du = (lc3d - fc3d) / nnn;
Standard_Real u3d = fc3d;
Standard_Integer extrap_mode[2] ;
extrap_mode[0] = extrap_mode[1] = 3;
Standard_Real eval_result[2] ;
Standard_Integer DerivativeRequest = 0;
Standard_Real *PolesArray =
(Standard_Real *) &Poles(Poles.Lower()) ;
for (Standard_Integer DEBi = 0; DEBi <= nnn; DEBi++) {
DEBKnots(DEBi) = DEBi;
BSplCLib::Eval(u3d,
Standard_False,
DerivativeRequest,
extrap_mode[0],
3,
FlatKnots,
1,
PolesArray[0],
eval_result[0]) ;
DEBP2d (DEBi) = gp_Pnt2d(u3d,eval_result[0]);
u3d += du;
}
Handle(Geom2d_BSplineCurve) DEBBS =
new Geom2d_BSplineCurve(DEBP2d,DEBKnots,DEBMults,1);
Sprintf(Name,"DEBC2d_%d_%d",NbCurve,nbcoups );
#ifdef DRAW
DrawTrSurf::Set(Name,DEBBS);
#endif
}
#endif
//-------------------------------------------
//-------------------------------------------
// Test if par2d(par3d) is monotonous function or not ----- IFV, Jan 2000
// and try to insert new point to improve BSpline interpolation
Standard_Integer extrap_mode[2] ;
extrap_mode[0] = extrap_mode[1] = 3;
Standard_Real eval_result[2] ;
Standard_Integer DerivativeRequest = 0;
Standard_Real *PolesArray =
(Standard_Real *) &Poles(Poles.Lower()) ;
Standard_Integer newcount = 0;
for (ii = 0; ii < count; ii++) {
newpcons[newcount] = pcons[ii];
newpc3d[newcount] = pc3d[ii];
newcount++;
if(count - ii + newcount == aMaxArraySize) continue;
BSplCLib::Eval(.5*(pc3d[ii]+pc3d[ii+1]), Standard_False, DerivativeRequest,
extrap_mode[0], 3, FlatKnots, 1, PolesArray[0], eval_result[0]);
if(eval_result[0] < pcons[ii] || eval_result[0] > pcons[ii+1]) {
Standard_Real ucons = 0.5*(pcons[ii]+pcons[ii+1]);
Standard_Real uc3d = 0.5*(pc3d[ii]+pc3d[ii+1]);
CurveOnSurface.D0(ucons,Pcons);
Projector.Perform(Pcons, uc3d);
if (Projector.IsDone()) {
curp = Projector.Point().Parameter();
Standard_Real dist_2 = Projector.SquareDistance();
if(dist_2 > besttol2) besttol2 = dist_2;
projok = 1;
}
else {
ProjectPointOnCurve(uc3d,Pcons,Tol,30,myC3d->Curve(),projok,curp);
}
if(projok){
if(curp > pc3d[ii] + deltamin && curp < pc3d[ii+1] - deltamin){
newpc3d[newcount] = curp;
newpcons[newcount] = ucons;
newcount ++;
}
}
else {
#ifdef OCCT_DEBUG
// JAG
cout << "Projection not done" << endl;
#endif
}
}
}
newpc3d[newcount] = pc3d[count];
newpcons[newcount] = pcons[count];
Standard_Real * temp;
temp = pc3d;
pc3d = newpc3d;
newpc3d = temp;
temp = pcons;
pcons = newpcons;
newpcons = temp;
if((count != newcount) && newcount < aMaxArraySize) { count = newcount; continue;}
count = newcount;
Standard_Real algtol = sqrt(besttol2);
interpolok = Check (FlatKnots, Poles, count+1, Paramc3d, Paramcons,
myC3d, CurveOnSurface, algtol, tolsov);
if (Precision::IsInfinite(algtol)) {
mySameParameter = Standard_False;
#ifdef OCCT_DEBUG
cout<<"SameParameter problem : function of interpolation of parametration at mills !!"<<endl;
#endif
return;
}
tolsov = algtol;
interpolok = (interpolok || count >= aMaxArraySize);
if(interpolok) {
Standard_Real besttol = sqrt(besttol2);
#ifdef OCCT_DEBUG
if (Voir) {
if(algtol > besttol){
cout<<"SameParameter : Tol can't be reached before approx"<<endl;
}
}
#endif
Handle(TColStd_HArray1OfReal) tol1d,tol2d,tol3d;
tol1d = new TColStd_HArray1OfReal(1,2) ;
tol1d->SetValue(1, mySurf->UResolution(besttol));
tol1d->SetValue(2, mySurf->VResolution(besttol));
Approx_SameParameter_Evaluator ev (FlatKnots, Poles, myHCurve2d);
AdvApprox_ApproxAFunction anApproximator(2,0,0,tol1d,tol2d,tol3d,fc3d,lc3d,
Continuity,11,40,ev);
if (anApproximator.IsDone() || anApproximator.HasResult()) {
Adaptor3d_CurveOnSurface ACS = CurveOnSurface;
GeomLib_MakeCurvefromApprox aCurveBuilder(anApproximator) ;
Handle(Geom2d_BSplineCurve) aC2d = aCurveBuilder.Curve2dFromTwo1d(1,2) ;
Handle(Adaptor2d_HCurve2d) aHCurve2d = new Geom2dAdaptor_HCurve(aC2d);
CurveOnSurface.Load(aHCurve2d);
myTolReached = ComputeTolReached(myC3d,CurveOnSurface,NCONTROL);
if(myTolReached > anErrorMAX)
{
//This tolerance is too big. Probably, we will not can get
//edge with sameparameter in this case.
myDone = Standard_False;
return;
}
if( (myTolReached < 250.0*besttol) ||
(count >= aMaxArraySize-2) ||
!hasCountChanged) //if count does not change after adding new point
//(else we can have circularity)
{
myCurve2d = aC2d;
myHCurve2d = new Geom2dAdaptor_HCurve(myCurve2d);
myDone = Standard_True;
}
else
{
interpolok = Standard_False;
CurveOnSurface = ACS;
}
}
}
if(!interpolok)
{
#ifdef OCCT_DEBUG
if (Voir)
cout<<"SameParameter : Not enough points, enrich"<<endl;
#endif
newcount = 0;
for(Standard_Integer n = 0; n < count; n++){
newpc3d[newcount] = pc3d[n];
newpcons[newcount] = pcons[n];
newcount ++;
if(count - n + newcount == aMaxArraySize) continue;
Standard_Real ucons = 0.5*(pcons[n]+pcons[n+1]);
Standard_Real uc3d = 0.5*(pc3d[n]+pc3d[n+1]);
CurveOnSurface.D0(ucons,Pcons);
Projector.Perform(Pcons, uc3d);
if (Projector.IsDone()) {
curp = Projector.Point().Parameter();
Standard_Real dist_2 = Projector.SquareDistance();
if(dist_2 > besttol2) besttol2 = dist_2;
projok = 1;
}
else {
ProjectPointOnCurve(uc3d,Pcons,Tol,30,myC3d->Curve(),projok,curp);
}
if(projok){
if(curp > pc3d[n] + deltamin && curp < pc3d[n+1] - deltamin){
newpc3d[newcount] = curp;
newpcons[newcount] = ucons;
newcount ++;
}
}
else {
#ifdef OCCT_DEBUG
// JAG
cout << "Projection not done" << endl;
#endif
}
}
newpc3d[newcount] = pc3d[count];
newpcons[newcount] = pcons[count];
Standard_Real * tempx;
tempx = pc3d;
pc3d = newpc3d;
newpc3d = tempx;
tempx = pcons;
pcons = newpcons;
newpcons = tempx;
if(count != newcount)
{
count = newcount;
hasCountChanged = Standard_True;
}
else
{
hasCountChanged = Standard_False;
}
}
}
}
View Git Blame Copy Permalink