OpenCascade/occt
1
0
Fork 0
mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-05-31 11:15:31 +03:00
Code
occt/src/Extrema/Extrema_ExtElCS.cxx
bugmster 973c2be1e1 0024428: Implementation of LGPL license 
The copying permission statements at the beginning of source files updated to refer to LGPL.
Copyright dates extended till 2014 in advance.
2013-12-17 12:42:41 +04:00

534 lines
13 KiB
C++
Raw Blame History

// 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 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 - Thu Jul 7 14:37:05 2005 OCC9134
#include <Extrema_ExtElCS.ixx>
#include <Extrema_ExtPElS.hxx>
#include <Extrema_ExtPElC.hxx>
#include <Extrema_ExtElC.hxx>
#include <Extrema_POnCurv.hxx>
#include <Standard_NotImplemented.hxx>
#include <StdFail_InfiniteSolutions.hxx>
#include <Precision.hxx>
#include <ElSLib.hxx>
#include <ElCLib.hxx>
#include <gp_Vec.hxx>
#include <IntAna_Quadric.hxx>
#include <IntAna_IntConicQuad.hxx>
Extrema_ExtElCS::Extrema_ExtElCS()
{
myDone = Standard_False;
myIsPar = Standard_False;
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Lin& C,
const gp_Pln& S)
{
Perform(C, S);
}
void Extrema_ExtElCS::Perform(const gp_Lin& C,
const gp_Pln& S)
{
myDone = Standard_True;
myIsPar = Standard_False;
if (C.Direction().IsNormal(S.Axis().Direction(),
Precision::Angular())) {
mySqDist = new TColStd_HArray1OfReal(1, 1);
mySqDist->SetValue(1, S.SquareDistance(C));
myIsPar = Standard_True;
}
else {
myNbExt = 0;
}
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Lin& C,
const gp_Cylinder& S)
{
Perform(C, S);
}
void Extrema_ExtElCS::Perform(const gp_Lin& C,
const gp_Cylinder& S)
{
myDone = Standard_False;
myNbExt = 0;
myIsPar = Standard_False;
gp_Ax3 Pos = S.Position();
gp_Pnt Origin = Pos.Location();
gp_Pnt LineOrig = C.Location();
Standard_Real radius = S.Radius();
Extrema_ExtElC Extrem(gp_Lin(Pos.Axis()), C, Precision::Angular());
if (Extrem.IsParallel()) {
mySqDist = new TColStd_HArray1OfReal(1, 1);
myPoint1 = new Extrema_HArray1OfPOnCurv(1, 1);
myPoint2 = new Extrema_HArray1OfPOnSurf(1, 1);
Standard_Real aDist = sqrt(Extrem.SquareDistance(1)) - radius;
mySqDist->SetValue(1, aDist * aDist);
Standard_Real u, v, w;
gp_Vec aVec(LineOrig, Origin);
gp_Vec aDirVec(C.Direction());
w = aVec*aDirVec;
gp_Pnt LinPoint = LineOrig.Translated(w * aDirVec);
Extrema_POnCurv PonC(w, LinPoint);
myPoint1->SetValue(1, PonC);
gp_Pnt CylPoint;
gp_Vec OrigToLine(Origin, LinPoint);
if (OrigToLine.Magnitude() <= gp::Resolution())
{
u = 0.;
v = 0.;
CylPoint = ElSLib::Value(u, v, S);
}
else
{
OrigToLine.Normalize();
CylPoint = Origin.Translated(radius * OrigToLine);
ElSLib::CylinderParameters(Pos, radius, CylPoint, u, v);
}
Extrema_POnSurf PonS(u, v, CylPoint);
myPoint2->SetValue(1, PonS);
myDone = Standard_True;
myIsPar = Standard_True;
}
else {
Standard_Integer i;
Extrema_POnCurv myPOnC1, myPOnC2;
Extrem.Points(1, myPOnC1, myPOnC2);
gp_Pnt PonAxis = myPOnC1.Value();
gp_Pnt PC = myPOnC2.Value();
// line is tangent or outside of the cylunder -- single solution
if (radius - PonAxis.Distance(PC) < Precision::PConfusion())
{
Extrema_ExtPElS ExPS(PC, S, Precision::Confusion());
if (ExPS.IsDone()) {
myNbExt = ExPS.NbExt();
mySqDist = new TColStd_HArray1OfReal(1, myNbExt);
myPoint1 = new Extrema_HArray1OfPOnCurv(1, myNbExt);
myPoint2 = new Extrema_HArray1OfPOnSurf(1, myNbExt);
for (i = 1; i <= myNbExt; i++) {
myPoint1->SetValue(i, myPOnC2);
myPoint2->SetValue(i, ExPS.Point(i));
mySqDist->SetValue(i,(myPOnC2.Value()).SquareDistance(ExPS.Point(i).Value()));
}
}
}
// line intersects the cylinder
else
{
IntAna_Quadric theQuadric(S);
IntAna_IntConicQuad Inters(C, theQuadric);
if (Inters.IsDone())
{
myNbExt = Inters.NbPoints();
if (myNbExt > 0)
{
mySqDist = new TColStd_HArray1OfReal(1, myNbExt);
myPoint1 = new Extrema_HArray1OfPOnCurv(1, myNbExt);
myPoint2 = new Extrema_HArray1OfPOnSurf(1, myNbExt);
Standard_Real u, v, w;
for (i = 1; i <= myNbExt; i++)
{
mySqDist->SetValue(i, 0.);
gp_Pnt P_int = Inters.Point(i);
w = Inters.ParamOnConic(i);
Extrema_POnCurv PonC(w, P_int);
myPoint1->SetValue(i, PonC);
ElSLib::CylinderParameters(Pos, radius, P_int, u, v);
Extrema_POnSurf PonS(u, v, P_int);
myPoint2->SetValue(i, PonS);
}
}
}
}
myDone = Standard_True;
}
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Lin& C,
const gp_Cone& S)
{
Perform(C, S);
}
//void Extrema_ExtElCS::Perform(const gp_Lin& C,
// const gp_Cone& S)
void Extrema_ExtElCS::Perform(const gp_Lin& ,
const gp_Cone& )
{
Standard_NotImplemented::Raise();
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Lin& C,
const gp_Sphere& S)
{
Perform(C, S);
}
void Extrema_ExtElCS::Perform(const gp_Lin& C,
const gp_Sphere& S)
{
myDone = Standard_False;
myNbExt = 0;
myIsPar = Standard_False;
gp_Pnt O = S.Location();
Extrema_ExtPElC Extrem(O, C, Precision::Angular(), RealFirst(), RealLast());
Standard_Integer i;
if (Extrem.IsDone()) {
Extrema_POnCurv myPOnC1 = Extrem.Point(1);
Extrema_ExtPElS ExPS(myPOnC1.Value(), S, Precision::Confusion());
if (ExPS.IsDone()) {
myNbExt = ExPS.NbExt();
mySqDist = new TColStd_HArray1OfReal(1, myNbExt);
myPoint1 = new Extrema_HArray1OfPOnCurv(1, myNbExt);
myPoint2 = new Extrema_HArray1OfPOnSurf(1, myNbExt);
for (i = 1; i <= myNbExt; i++) {
myPoint1->SetValue(i, myPOnC1);
myPoint2->SetValue(i, ExPS.Point(i));
mySqDist->SetValue(i,(myPOnC1.Value()).SquareDistance(ExPS.Point(i).Value()));
myDone = Standard_True;
}
}
}
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Lin& C,
const gp_Torus& S)
{
Perform(C, S);
}
//void Extrema_ExtElCS::Perform(const gp_Lin& C,
// const gp_Torus& S)
void Extrema_ExtElCS::Perform(const gp_Lin& ,
const gp_Torus& )
{
Standard_NotImplemented::Raise();
}
// Circle-?
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Circ& C,
const gp_Pln& S)
{
Perform(C, S);
}
//void Extrema_ExtElCS::Perform(const gp_Circ& C,
// const gp_Pln& S)
void Extrema_ExtElCS::Perform(const gp_Circ& ,
const gp_Pln& )
{
Standard_NotImplemented::Raise();
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Circ& C,
const gp_Cylinder& S)
{
Perform(C, S);
}
// Modified by skv - Thu Jul 7 14:37:05 2005 OCC9134 Begin
// Implementation of the method.
void Extrema_ExtElCS::Perform(const gp_Circ& C,
const gp_Cylinder& S)
{
myDone = Standard_False;
myIsPar = Standard_False;
myNbExt = 0;
// Get an axis line of the cylinder.
gp_Lin anAxis(S.Axis());
// Compute extrema between the circle and the line.
Extrema_ExtElC anExtC(anAxis, C, 0.);
if (anExtC.IsDone()) {
if (anExtC.IsParallel()) {
myIsPar = Standard_True;
mySqDist = new TColStd_HArray1OfReal(1, 1);
Standard_Real aDist = sqrt (anExtC.SquareDistance(1)) - S.Radius();
mySqDist->SetValue(1, aDist * aDist);
} else {
Standard_Integer aNbExt = anExtC.NbExt();
Standard_Integer i;
Standard_Integer aCurI = 1;
Standard_Real aTolConf = Precision::Confusion();
Standard_Real aCylRad = S.Radius();
// Check whether two objects have intersection points
IntAna_Quadric aCylQuad(S);
IntAna_IntConicQuad aCircCylInter(C, aCylQuad);
Standard_Integer aNbInter = aCircCylInter.NbPoints();
if (!aCircCylInter.IsDone())
aNbInter = 0;
// Compute the extremas.
myNbExt = 2*aNbExt + aNbInter;
mySqDist = new TColStd_HArray1OfReal(1, myNbExt);
myPoint1 = new Extrema_HArray1OfPOnCurv(1, myNbExt);
myPoint2 = new Extrema_HArray1OfPOnSurf(1, myNbExt);
for (i = 1; i <= aNbExt; i++) {
Extrema_POnCurv aPOnAxis;
Extrema_POnCurv aPOnCirc;
Standard_Real aSqDist = anExtC.SquareDistance(i);
Standard_Real aDist = sqrt (aSqDist);
anExtC.Points(i, aPOnAxis, aPOnCirc);
if (aSqDist <= (aTolConf * aTolConf)) {
myNbExt -= 2;
continue;
}
gp_Dir aDir(aPOnAxis.Value().XYZ().Subtracted(aPOnCirc.Value().XYZ()));
Standard_Real aShift[2] = { aDist + aCylRad, aDist - aCylRad };
Standard_Integer j;
for (j = 0; j < 2; j++) {
gp_Vec aVec(aDir);
gp_Pnt aPntOnCyl;
aVec.Multiply(aShift[j]);
aPntOnCyl = aPOnCirc.Value().Translated(aVec);
Standard_Real aU;
Standard_Real aV;
ElSLib::Parameters(S, aPntOnCyl, aU, aV);
Extrema_POnSurf aPOnSurf(aU, aV, aPntOnCyl);
myPoint1->SetValue(aCurI, aPOnCirc);
myPoint2->SetValue(aCurI, aPOnSurf);
mySqDist->SetValue(aCurI++, aShift[j] * aShift[j]);
}
}
// Adding intersection points to the list of extremas
for (i=1; i<=aNbInter; i++)
{
Standard_Real aU;
Standard_Real aV;
gp_Pnt aInterPnt = aCircCylInter.Point(i);
aU = ElCLib::Parameter(C, aInterPnt);
Extrema_POnCurv aPOnCirc(aU, aInterPnt);
ElSLib::Parameters(S, aInterPnt, aU, aV);
Extrema_POnSurf aPOnCyl(aU, aV, aInterPnt);
myPoint1->SetValue(aCurI, aPOnCirc);
myPoint2->SetValue(aCurI, aPOnCyl);
mySqDist->SetValue(aCurI++, 0.0);
}
}
myDone = Standard_True;
}
}
// Modified by skv - Thu Jul 7 14:37:05 2005 OCC9134 End
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Circ& C,
const gp_Cone& S)
{
Perform(C, S);
}
//void Extrema_ExtElCS::Perform(const gp_Circ& C,
// const gp_Cone& S)
void Extrema_ExtElCS::Perform(const gp_Circ& ,
const gp_Cone& )
{
Standard_NotImplemented::Raise();
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Circ& C,
const gp_Sphere& S)
{
Perform(C, S);
}
//void Extrema_ExtElCS::Perform(const gp_Circ& C,
// const gp_Sphere& S)
void Extrema_ExtElCS::Perform(const gp_Circ& ,
const gp_Sphere& )
{
Standard_NotImplemented::Raise();
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Circ& C,
const gp_Torus& S)
{
Perform(C, S);
}
//void Extrema_ExtElCS::Perform(const gp_Circ& C,
// const gp_Torus& S)
void Extrema_ExtElCS::Perform(const gp_Circ& ,
const gp_Torus& )
{
Standard_NotImplemented::Raise();
}
Extrema_ExtElCS::Extrema_ExtElCS(const gp_Hypr& C,
const gp_Pln& S)
{
Perform(C, S);
}
void Extrema_ExtElCS::Perform(const gp_Hypr& C,
const gp_Pln& S)
{
myDone = Standard_True;
myIsPar = Standard_False;
gp_Ax2 Pos = C.Position();
gp_Dir NHypr = Pos.Direction();
gp_Dir NPln = S.Axis().Direction();
if (NHypr.IsParallel(NPln, Precision::Angular())) {
mySqDist = new TColStd_HArray1OfReal(1, 1);
mySqDist->SetValue(1, S.SquareDistance(C.Location()));
myIsPar = Standard_True;
}
else {
gp_Dir XDir = Pos.XDirection();
gp_Dir YDir = Pos.YDirection();
Standard_Real A = C.MinorRadius()*(NPln.Dot(YDir));
Standard_Real B = C.MajorRadius()*(NPln.Dot(XDir));
if(Abs(B) > Abs(A)) {
Standard_Real T = -0.5 * Log((A+B)/(B-A));
gp_Pnt Ph = ElCLib::HyperbolaValue(T, Pos, C.MajorRadius(), C.MinorRadius());
Extrema_POnCurv PC(T, Ph);
myPoint1 = new Extrema_HArray1OfPOnCurv(1,1);
myPoint1->SetValue(1, PC);
mySqDist = new TColStd_HArray1OfReal(1, 1);
mySqDist->SetValue(1, S.SquareDistance(Ph));
Standard_Real U, V;
ElSLib::PlaneParameters(S.Position(), Ph, U, V);
gp_Pnt Pp = ElSLib::PlaneValue(U, V, S.Position());
Extrema_POnSurf PS(U, V, Pp);
myPoint2 = new Extrema_HArray1OfPOnSurf(1,1);
myPoint2->SetValue(1, PS);
myNbExt = 1;
}
else {
myNbExt = 0;
}
}
}
Standard_Boolean Extrema_ExtElCS::IsDone() const
{
return myDone;
}
Standard_Integer Extrema_ExtElCS::NbExt() const
{
if (myIsPar) StdFail_InfiniteSolutions::Raise();
return myNbExt;
}
Standard_Real Extrema_ExtElCS::SquareDistance(const Standard_Integer N) const
{
if (myIsPar && N != 1) StdFail_InfiniteSolutions::Raise();
return mySqDist->Value(N);
}
void Extrema_ExtElCS::Points(const Standard_Integer N,
Extrema_POnCurv& P1,
Extrema_POnSurf& P2) const
{
if (myIsPar) StdFail_InfiniteSolutions::Raise();
P1 = myPoint1->Value(N);
P2 = myPoint2->Value(N);
}
Standard_Boolean Extrema_ExtElCS::IsParallel() const
{
return myIsPar;
}
View Git Blame Copy Permalink