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// File : IntPatch_HInterTool.cxx
// Created : Fri Jul 2 13:19:22 1995
// Author : Laurent BUCHARD
// Copyright : OPEN CASCADE 1995
#include <IntPatch_HInterTool.ixx>
#include <Extrema_EPCOfExtPC2d.hxx>
#include <Extrema_POnCurv2d.hxx>
#include <GeomAbs_SurfaceType.hxx>
#include <Standard_OutOfRange.hxx>
#include <Handle_Geom_BezierSurface.hxx>
#include <Handle_Geom_BSplineSurface.hxx>
#include <Handle_Geom2d_BezierCurve.hxx>
#include <Handle_Geom2d_BSplineCurve.hxx>
#include <Geom_BezierSurface.hxx>
#include <Geom_BSplineSurface.hxx>
#include <Geom2d_BezierCurve.hxx>
#include <Geom2d_BSplineCurve.hxx>
static Standard_Real uinf,vinf,usup,vsup;
Standard_Integer IntPatch_HInterTool::NbSamplesV (const Handle(Adaptor3d_HSurface)& S,
const Standard_Real, const Standard_Real)
{
switch (S->GetType())
{
case GeomAbs_Plane: return 2;
case GeomAbs_BezierSurface: return (3 + S->NbVPoles());
case GeomAbs_BSplineSurface:
{
Standard_Integer nbs = S->NbVKnots();
nbs *= S->VDegree();
if (!S->IsVRational()) nbs *= 2;
if (nbs < 4) nbs = 4;
return nbs;
}
break;
case GeomAbs_Cylinder:
case GeomAbs_Cone:
case GeomAbs_Sphere:
case GeomAbs_Torus:
case GeomAbs_SurfaceOfRevolution:
case GeomAbs_SurfaceOfExtrusion: return 15;
default: /* do nothing */ break;
}
return 10;
}
Standard_Integer IntPatch_HInterTool::NbSamplesU (const Handle(Adaptor3d_HSurface)& S,
const Standard_Real, const Standard_Real)
{
switch (S->GetType())
{
case GeomAbs_Plane: return 2;
case GeomAbs_BezierSurface: return (3 + S->NbUPoles());
case GeomAbs_BSplineSurface:
{
Standard_Integer nbs = S->NbUKnots();
nbs *= S->UDegree();
if (!S->IsURational()) nbs *= 2;
if (nbs < 4) nbs = 4;
return nbs;
}
case GeomAbs_Torus: return 20;
//case GeomAbs_Cylinder:
//case GeomAbs_Cone:
//case GeomAbs_Sphere:
//case GeomAbs_SurfaceOfRevolution:
//case GeomAbs_SurfaceOfExtrusion: return 10;
default: /* Do nothing */ break;
}
return 10;
}
Standard_Integer IntPatch_HInterTool::NbSamplePoints (const Handle(Adaptor3d_HSurface)& S)
{
uinf = S->FirstUParameter();
usup = S->LastUParameter();
vinf = S->FirstVParameter();
vsup = S->LastVParameter();
if (usup < uinf) {
Standard_Real temp = uinf;
uinf = usup;
usup = temp;
}
if (vsup < vinf) {
Standard_Real temp = vinf;
vinf = vsup;
vsup = temp;
}
if (uinf == RealFirst() && usup == RealLast()) {
uinf = -1.e5;
usup = 1.e5;
}
else if (uinf == RealFirst()) {
uinf = usup - 2.e5;
}
else if (usup == RealLast()) {
usup = uinf + 2.e5;
}
if (vinf == RealFirst() && vsup == RealLast()) {
vinf = -1.e5;
vsup = 1.e5;
}
else if (vinf == RealFirst()) {
vinf = vsup - 2.e5;
}
else if (vsup == RealLast()) {
vsup = vinf + 2.e5;
}
const Standard_Integer m = (1+NbSamplesU(S,uinf,usup)/2) * (1+NbSamplesV(S,vinf,vsup)/2);
return(m);
}
void IntPatch_HInterTool::SamplePoint (const Handle(Adaptor3d_HSurface)& S,
const Standard_Integer Index,
Standard_Real& U,
Standard_Real& V )
{
Standard_Integer nbIntU = 1+NbSamplesU(S,uinf,usup);
nbIntU>>=1;
Standard_Integer nbIntV = 1+NbSamplesV(S,vinf,vsup);
nbIntV>>=1;
if(nbIntU * nbIntV >5) {
Standard_Integer NV = (Index-1) / nbIntU;
Standard_Integer NU = (Index-1) - NV * nbIntU;
Standard_Real du = ((usup-uinf)/((Standard_Real)(nbIntU+1)));
Standard_Real dv = ((vsup-vinf)/((Standard_Real)(nbIntV+1)));
Standard_Integer perturb=(NU+NV) & 3;
//-- petite perturbation pou eviter les pbs de symetrie avec Les recherches de points int.
switch(perturb) {
case 1: dv*=1.001; dv*=0.999; break;
case 2: du*=1.001; dv*=1.001; break;
case 3: du*=0.999; break;
default: break;
}
U = uinf + du*(Standard_Real)(NU+1);
V = vinf + dv*(Standard_Real)(NV+1);
return;
}
switch (Index) {
case 1:
U = 0.76*uinf + 0.24*usup;
V = 0.74*vinf + 0.26*vsup;
break;
case 2:
U = 0.73*uinf + 0.27*usup;
V = 0.24*vinf + 0.76*vsup;
break;
case 3:
U = 0.25*uinf + 0.75*usup;
V = 0.76*vinf + 0.24*vsup;
break;
case 4:
U = 0.26*uinf + 0.74*usup;
V = 0.25*vinf + 0.75*vsup;
break;
default:
U = 0.51*uinf+0.49*usup;
V = 0.49*vinf+0.51*vsup;
}
}
Standard_Integer IntPatch_HInterTool::NbSamplesOnArc (const Handle(Adaptor2d_HCurve2d)& A)
{
GeomAbs_CurveType CurveType = A->GetType();
// Standard_Real nbsOnC = 5;
Standard_Integer nbsOnC = 5;
switch(CurveType) {
case GeomAbs_Line:
nbsOnC = 2;
break;
case GeomAbs_Circle:
case GeomAbs_Ellipse:
case GeomAbs_Hyperbola:
case GeomAbs_Parabola:
nbsOnC = 10;
break;
case GeomAbs_BezierCurve:
nbsOnC = A->NbPoles();
break;
case GeomAbs_BSplineCurve: {
//-- Handle_Geom2d_BSplineCurve& BSC=A->BSpline();
nbsOnC = 2 + A->NbKnots() * A->Degree();
break;
}
default:
nbsOnC = 10;
}
return(nbsOnC);
}
void IntPatch_HInterTool::Bounds(const Handle(Adaptor2d_HCurve2d)& A,
Standard_Real& Ufirst,
Standard_Real& Ulast)
{
Ufirst = A->FirstParameter();
Ulast = A->LastParameter();
}
Standard_Boolean IntPatch_HInterTool::Project (const Handle(Adaptor2d_HCurve2d)& C,
const gp_Pnt2d& P,
Standard_Real& Paramproj,
gp_Pnt2d& Ptproj)
{
Standard_Real epsX = 1.e-8;
Standard_Integer Nbu = 20;
Standard_Real Tol = 1.e-5;
Standard_Real Dist2;
Extrema_EPCOfExtPC2d extrema(P,C->Curve2d(),Nbu,epsX,Tol);
if (!extrema.IsDone()) {
return Standard_False;
}
Standard_Integer Nbext = extrema.NbExt();
if (Nbext == 0) {
return Standard_False;
}
Standard_Integer indexmin = 1;
Dist2 = extrema.SquareDistance(1);
for (Standard_Integer i=2; i<=Nbext; i++) {
if (extrema.SquareDistance(i) < Dist2) {
indexmin = i;
Dist2 = extrema.SquareDistance(i);
}
}
Paramproj = extrema.Point(indexmin).Parameter();
Ptproj = extrema.Point(indexmin).Value();
return Standard_True;
}
Standard_Real IntPatch_HInterTool::Tolerance (const Handle(Adaptor3d_HVertex)& V,
const Handle(Adaptor2d_HCurve2d)& C)
{
return V->Resolution(C);
}
Standard_Real IntPatch_HInterTool::Parameter (const Handle(Adaptor3d_HVertex)& V,
const Handle(Adaptor2d_HCurve2d)& C)
{
return V->Parameter(C);
}
Standard_Boolean IntPatch_HInterTool::HasBeenSeen(const Handle(Adaptor2d_HCurve2d)&)
{
return Standard_False;
}
Standard_Integer IntPatch_HInterTool::NbPoints(const Handle(Adaptor2d_HCurve2d)&)
{
return 0;
}
void IntPatch_HInterTool::Value(const Handle(Adaptor2d_HCurve2d)&,
const Standard_Integer,
gp_Pnt&,
Standard_Real&,
Standard_Real&)
{
Standard_OutOfRange::Raise();
}
Standard_Boolean IntPatch_HInterTool::IsVertex(const Handle(Adaptor2d_HCurve2d)&,
const Standard_Integer)
{
return Standard_False;
}
void IntPatch_HInterTool::Vertex(const Handle(Adaptor2d_HCurve2d)&,
const Standard_Integer,
Handle(Adaptor3d_HVertex)&)
{
Standard_OutOfRange::Raise();
}
Standard_Integer IntPatch_HInterTool::NbSegments(const Handle(Adaptor2d_HCurve2d)&)
{
return 0;
}
Standard_Boolean IntPatch_HInterTool::HasFirstPoint (const Handle(Adaptor2d_HCurve2d)&,
const Standard_Integer,
Standard_Integer&)
{
Standard_OutOfRange::Raise();
return Standard_False;
}
Standard_Boolean IntPatch_HInterTool::HasLastPoint (const Handle(Adaptor2d_HCurve2d)&,
const Standard_Integer,
Standard_Integer&)
{
Standard_OutOfRange::Raise();
return Standard_False;
}
Standard_Boolean IntPatch_HInterTool::IsAllSolution (const Handle(Adaptor2d_HCurve2d)&)
{
return Standard_False;
}
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