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// File: TopOpeBRepTool_PROJECT.cxx
// Created: Mon Nov 24 17:13:50 1997
// Author: Xuan PHAM PHU
// <xpu@poulopox.paris1.matra-dtv.fr>
#include <TopOpeBRepTool_PROJECT.hxx>
#include <Geom2d_Curve.hxx>
#include <Geom_Curve.hxx>
#include <Geom_Surface.hxx>
#include <GeomAPI_ProjectPointOnCurve.hxx>
#include <GeomAPI_ProjectPointOnSurf.hxx>
#include <BRepLib_MakeVertex.hxx>
#include <BRepExtrema_ExtPF.hxx>
#include <Bnd_Box2d.hxx>
#include <Bnd_Box.hxx>
#include <BRepBndLib.hxx>
#include <BndLib_Add2dCurve.hxx>
#include <BRepAdaptor_Curve.hxx>
#include <BRepAdaptor_Curve2d.hxx>
#include <gp_Pnt.hxx>
#include <gp_Dir2d.hxx>
#include <BRep_Tool.hxx>
#include <Precision.hxx>
#include <TopOpeBRepTool_GEOMETRY.hxx>
// ----------------------------------------------------------------------
Standard_EXPORT void FUN_tool_bounds(const TopoDS_Edge& E,Standard_Real& f,Standard_Real& l)
{
BRepAdaptor_Curve BAC(E);
f = BAC.FirstParameter();
l = BAC.LastParameter();
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Integer FUN_tool_getindex(const Extrema_ExtPC& ponc)
{
Standard_Real Dist2,Dist2Min = ponc.SquareDistance(1);
Standard_Integer myIndex = 1,n = ponc.NbExt();
for ( Standard_Integer i = 2; i <= n; i++) {
Dist2 = ponc.SquareDistance(i);
if ( Dist2 < Dist2Min) {
Dist2Min = Dist2;
myIndex = i;
}
}
return myIndex;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Integer FUN_tool_getindex(const Extrema_ExtPC2d& ponc)
{
Standard_Real Dist2,Dist2Min = ponc.SquareDistance(1);
Standard_Integer myIndex = 1,n = ponc.NbExt();
for ( Standard_Integer i = 2; i <= n; i++) {
Dist2 = ponc.SquareDistance(i);
if ( Dist2 < Dist2Min) {
Dist2Min = Dist2;
myIndex = i;
}
}
return myIndex;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonC(const gp_Pnt& P,
const Standard_Real tole,const BRepAdaptor_Curve& BAC,
const Standard_Real pmin,const Standard_Real pmax,
Standard_Real& param,Standard_Real& dist)
{
// <True> if projection succeeds,and sets <param> to parameter of <P> on <C>.
Extrema_ExtPC ponc(P,BAC,pmin,pmax);
Standard_Boolean ok = ponc.IsDone();
Standard_Integer nbext = 0;
if (ok) {nbext = ponc.NbExt(); ok = (nbext > 0);}
if (!ok) {
for (Standard_Integer i = 1; i <= 2; i++) {
Standard_Real par = (i == 1) ? pmin : pmax;
gp_Pnt pt = BAC.Value(par);
Standard_Real d2 = pt.SquareDistance(P);
Standard_Boolean onpt = (d2 < tole * tole);
if (onpt) {
param = par;
dist = sqrt (d2);
return Standard_True;}
}
return Standard_False;
}
Standard_Integer i = FUN_tool_getindex(ponc);
param = ponc.Point(i).Parameter();
dist = sqrt (ponc.SquareDistance(i));
return Standard_True;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonC(const gp_Pnt& P,
const BRepAdaptor_Curve& BAC,
const Standard_Real pmin,const Standard_Real pmax,
Standard_Real& param,Standard_Real& dist)
{
// <True> if projection succeeds,and sets <param> to parameter of <P> on <C>.
Standard_Real tole = BAC.Tolerance();
Standard_Boolean ok = FUN_tool_projPonC(P,tole,BAC,pmin,pmax,param,dist);
return ok;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonC(const gp_Pnt& P,
const BRepAdaptor_Curve& BAC,
Standard_Real& param,Standard_Real& dist)
{
// <True> if projection succeeds,and sets <param> to parameter of <P> on <C>.
Standard_Real tole = BAC.Tolerance();
Standard_Real pmin = BAC.FirstParameter();
Standard_Real pmax = BAC.LastParameter();
Standard_Boolean ok = FUN_tool_projPonC(P,tole,BAC,pmin,pmax,param,dist);
return ok;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonC2D(const gp_Pnt& P,
const Standard_Real tole,const BRepAdaptor_Curve2d& BAC2D,
const Standard_Real pmin,const Standard_Real pmax,
Standard_Real& param,Standard_Real& dist)
{
// <True> if projection succeeds,and sets <param> to parameter of <P> on <C>.
Standard_Boolean ok = Standard_False;
gp_Pnt2d P2D;
const TopoDS_Face& F = BAC2D.Face();
ok = FUN_tool_projPonF(P,F,P2D,dist);
if (!ok) return Standard_False;
Extrema_ExtPC2d ponc2d(P2D,BAC2D,pmin,pmax);
ok = ponc2d.IsDone();
Standard_Integer nbext = ponc2d.NbExt();
if (ok) ok = (nbext > 0);
if (!ok) {
for (Standard_Integer i = 1; i <= 2; i++) {
Standard_Real par = (i == 1) ? pmin : pmax;
gp_Pnt2d pt2d = BAC2D.Value(par);
Standard_Real d2 = pt2d.SquareDistance(P2D);
Standard_Boolean onpt = (d2 < tole * tole);
if (onpt) {
param = par;
dist = sqrt (d2);
return Standard_True;}
}
return Standard_False;
}
Standard_Integer i = FUN_tool_getindex(ponc2d);
param = ponc2d.Point(i).Parameter();
dist = sqrt (ponc2d.SquareDistance(i));
return Standard_True;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonC2D(const gp_Pnt& P,
const BRepAdaptor_Curve2d& BAC2D,
const Standard_Real pmin,const Standard_Real pmax,
Standard_Real& param,Standard_Real& dist)
{
// <True> if projection succeeds,and sets <param> to parameter of <P> on <C>.
Standard_Real tole = BRep_Tool::Tolerance(BAC2D.Edge());
Standard_Boolean ok = FUN_tool_projPonC2D(P,tole,BAC2D,pmin,pmax,param,dist);
return ok;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonC2D(const gp_Pnt& P,
const BRepAdaptor_Curve2d& BAC2D,
Standard_Real& param,Standard_Real& dist)
{
// <True> if projection succeeds,and sets <param> to parameter of <P> on <C>.
Standard_Real tole = BRep_Tool::Tolerance(BAC2D.Edge());
Standard_Real pmin = BAC2D.FirstParameter();
Standard_Real pmax = BAC2D.LastParameter();
Standard_Boolean ok = FUN_tool_projPonC2D(P,tole,BAC2D,pmin,pmax,param,dist);
return ok;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonS(const gp_Pnt& P,
const Handle(Geom_Surface)& S,
gp_Pnt2d& UV,Standard_Real& dist)
{
GeomAPI_ProjectPointOnSurf PonS(P,S);
if (!PonS.Extrema().IsDone()) return Standard_False;
if (PonS.NbPoints() == 0) return Standard_False;
dist = PonS.LowerDistance();
Standard_Real U,V; PonS.LowerDistanceParameters(U,V); UV.SetCoord(U,V);
return Standard_True;
}
// ----------------------------------------------------------------------
// projecting point <P> on topologies (edge <E>,face <F>)
// ----------------------------------------------------------------------
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonE(const gp_Pnt& P,const Standard_Real tole,const TopoDS_Edge& E,
Standard_Real& param,Standard_Real& dist)
{
dist = 1.;
BRepAdaptor_Curve BAC(E);
Standard_Real first = BAC.FirstParameter();
Standard_Real last = BAC.LastParameter();
Standard_Boolean ok = FUN_tool_projPonC(P,tole,BAC,first,last,param,dist);
if (!ok) return Standard_False;
Standard_Real f,l; FUN_tool_bounds(E,f,l);
Standard_Real tolp = Precision::Parametric(Precision::Confusion());
Standard_Boolean onf = Abs(f-param) < tolp; if (onf) param = f;
Standard_Boolean onl = Abs(l-param) < tolp; if (onl) param = l;
return Standard_True;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonE(const gp_Pnt& P,const TopoDS_Edge& E,
Standard_Real& param,Standard_Real& dist)
{
Standard_Real tole = BRep_Tool::Tolerance(E);
Standard_Boolean ok = FUN_tool_projPonE(P,tole,E,param,dist);
return ok;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonboundedF(const gp_Pnt& P,const TopoDS_Face& F,
gp_Pnt2d& UV,Standard_Real& dist)
{
dist = 1.;
// ! projecting point on surf does not take into account the face's
// restriction
BRepLib_MakeVertex mv(P); TopoDS_Vertex V = mv.Vertex();
BRepExtrema_ExtPF PonF(V,F);
if (!PonF.IsDone()) return Standard_False;
Standard_Integer npt = PonF.NbExt();
if (npt == 0) return Standard_False;
// tri
Standard_Real dmin2 = 1.e14; Standard_Integer imin = 0;
for (Standard_Integer i=1; i <=npt; i++){
Standard_Real d2 = PonF.SquareDistance(i);
if (d2 < dmin2) {imin = i; dmin2 = d2;}
}
if (imin == 0) return Standard_False;
Standard_Real u,v; PonF.Parameter(imin,u,v);
dist = sqrt (dmin2);
UV = gp_Pnt2d(u,v);
return Standard_True;
}
// ----------------------------------------------------------------------
Standard_EXPORT Standard_Boolean FUN_tool_projPonF(const gp_Pnt& P,const TopoDS_Face& F,
gp_Pnt2d& UV,Standard_Real& dist)
{
dist = 1.;
Handle(Geom_Surface) S = BRep_Tool::Surface(F);
Standard_Boolean ok = FUN_tool_projPonS(P,S,UV,dist);
return ok;
}
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