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0033244: Modeling Algorithms - Surface-surface intersection produces the double curves
IntAna_QuadQuadGeo.cxx - estimation of angular tolerance is added for case cone-cone tests/lowalgos/intss/bug33244 - new test case added
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@ -50,11 +50,21 @@
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#include <Standard_DomainError.hxx>
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#include <Standard_OutOfRange.hxx>
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#include <StdFail_NotDone.hxx>
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#include <gce_MakePln.hxx>
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#include <ProjLib.hxx>
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#include <IntAna2d_AnaIntersection.hxx>
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#include <IntAna2d_IntPoint.hxx>
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#ifdef DEBUGLINES
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#include <Geom2d_Line.hxx>
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#endif
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static
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gp_Ax2 DirToAx2(const gp_Pnt& P,const gp_Dir& D);
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static
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void RefineDir(gp_Dir& aDir);
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static
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Standard_Real EstimDist(const gp_Cone& theCon1, const gp_Cone& theCon2);
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//=======================================================================
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//class : AxeOperator
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@ -249,6 +259,72 @@ gp_Ax2 DirToAx2(const gp_Pnt& P,const gp_Dir& D)
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return(gp_Ax2(P,D,gp_Dir(gp_Vec(-y,x,0.0))));
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}
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}
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//=======================================================================
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//function : EstimDist
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//purpose : returns a minimal distance from apex to any solution
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//=======================================================================
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Standard_Real EstimDist(const gp_Cone& theCon1, const gp_Cone& theCon2)
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{
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//It is supposed that axes of cones are coplanar and
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//distance between them > Precision::Confusion()
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gp_Pnt aPA1 = theCon1.Apex(), aPA2 = theCon2.Apex();
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gp_Pnt aP3 = aPA1.Translated(theCon1.Position().Direction());
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gce_MakePln aMkPln(aPA1, aPA2, aP3);
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if(!aMkPln.IsDone())
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return Precision::Infinite();
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const gp_Pln& aPln = aMkPln.Value();
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gp_Lin anAx1(aPA1, theCon1.Position().Direction());
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gp_Lin2d anAx12d = ProjLib::Project(aPln, anAx1);
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gp_Lin2d Lines1[2];
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Standard_Real anAng1 = theCon1.SemiAngle();
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Lines1[0] = anAx12d.Rotated(anAx12d.Location(), anAng1);
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Lines1[1] = anAx12d.Rotated(anAx12d.Location(), -anAng1);
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//
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gp_Lin anAx2(aPA2, theCon2.Position().Direction());
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gp_Lin2d anAx22d = ProjLib::Project(aPln, anAx2);
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gp_Lin2d Lines2[2];
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Standard_Real anAng2 = theCon2.SemiAngle();
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Lines2[0] = anAx22d.Rotated(anAx22d.Location(), anAng2);
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Lines2[1] = anAx22d.Rotated(anAx22d.Location(), -anAng2);
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#ifdef DEBUGLINES
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Handle(Geom2d_Line) L10 = new Geom2d_Line(Lines1[0]);
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Handle(Geom2d_Line) L11 = new Geom2d_Line(Lines1[1]);
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Handle(Geom2d_Line) L20 = new Geom2d_Line(Lines2[0]);
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Handle(Geom2d_Line) L21 = new Geom2d_Line(Lines2[1]);
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#endif
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Standard_Real aMinDist[2] = { Precision::Infinite(), Precision::Infinite() };
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Standard_Integer i, j, k;
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IntAna2d_AnaIntersection anInter;
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for (i = 0; i < 2; ++i)
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{
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for (j = 0; j < 2; ++j)
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{
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anInter.Perform(Lines1[i], Lines2[j]);
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if (anInter.IsDone())
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{
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Standard_Integer aNbPoints = anInter.NbPoints();
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for (k = 1; k <= aNbPoints; ++k)
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{
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const IntAna2d_IntPoint& anIntP = anInter.Point(k);
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Standard_Real aPar1 = Abs(anIntP.ParamOnFirst());
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aMinDist[0] = Min(aPar1, aMinDist[0]);
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Standard_Real aPar2 = Abs(anIntP.ParamOnSecond());
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aMinDist[1] = Min(aPar2, aMinDist[1]);
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}
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}
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}
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}
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Standard_Real aDist = Max(aMinDist[0], aMinDist[1]);
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return aDist;
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}
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//=======================================================================
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//function : IntAna_QuadQuadGeo
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//purpose : Empty constructor
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@ -1356,30 +1432,49 @@ IntAna_QuadQuadGeo::IntAna_QuadQuadGeo(const gp_Cylinder& Cyl,
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//=======================================================================
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void IntAna_QuadQuadGeo::Perform(const gp_Cone& Con1,
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const gp_Cone& Con2,
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const Standard_Real Tol)
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const Standard_Real Tol)
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{
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done=Standard_True;
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done = Standard_True;
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//
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Standard_Real tg1, tg2, aDA1A2, aTol2;
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gp_Pnt aPApex1, aPApex2;
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Standard_Real TOL_APEX_CONF = 1.e-10;
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//
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tg1=Tan(Con1.SemiAngle());
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tg2=Tan(Con2.SemiAngle());
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if((tg1 * tg2) < 0.) {
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//
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tg1 = Tan(Con1.SemiAngle());
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tg2 = Tan(Con2.SemiAngle());
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if ((tg1 * tg2) < 0.) {
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tg2 = -tg2;
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}
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//
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aTol2=Tol*Tol;
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aPApex1=Con1.Apex();
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aPApex2=Con2.Apex();
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aDA1A2=aPApex1.SquareDistance(aPApex2);
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aTol2 = Tol*Tol;
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aPApex1 = Con1.Apex();
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aPApex2 = Con2.Apex();
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aDA1A2 = aPApex1.SquareDistance(aPApex2);
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//
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AxeOperator A1A2(Con1.Axis(),Con2.Axis());
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AxeOperator A1A2(Con1.Axis(), Con2.Axis());
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//
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Standard_Real aTolAng = myEPSILON_ANGLE_CONE;
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if ((Abs(tg1 - tg2) < Tol) && (A1A2.Parallel()))
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{
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Standard_Real DistA1A2 = A1A2.Distance();
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if (DistA1A2 > 100. * Tol)
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{
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Standard_Real aMinSolDist = EstimDist(Con1, Con2);
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if (aMinSolDist < Epsilon(1.))
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{
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aTolAng = Tol;
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}
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else
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{
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aTolAng = Max(myEPSILON_ANGLE_CONE, Tol / aMinSolDist);
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aTolAng = Min(aTolAng, Tol);
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}
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}
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}
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// 1
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if(A1A2.Same()) {
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//-- two circles
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@ -1427,8 +1522,8 @@ IntAna_QuadQuadGeo::IntAna_QuadQuadGeo(const gp_Cylinder& Cyl,
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}
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} //-- fin A1A2.Same
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// 2
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else if((Abs(tg1-tg2)<myEPSILON_ANGLE_CONE) && (A1A2.Parallel())) {
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//-- voir AnVer12mai98
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else if((Abs(tg1-tg2) < aTolAng ) && (A1A2.Parallel())) {
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Standard_Real DistA1A2=A1A2.Distance();
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gp_Dir DA1=Con1.Position().Direction();
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gp_Vec O1O2(Con1.Apex(),Con2.Apex());
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48
tests/lowalgos/intss/bug33244
Normal file
48
tests/lowalgos/intss/bug33244
Normal file
@ -0,0 +1,48 @@
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puts "============"
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puts "0033244: Modeling Algorithms - Surface-surface intersection produces the double curves"
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puts "============"
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puts ""
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set PI180 0.017453292519943295
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set x -1.11630646267172
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set y -4.54487349779333
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set z 13.2493435203532
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set dx -1.05794851588922e-07
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set dy -1.39278337794573e-08
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set dz 0.999999999999994
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set ux 0.999999999999994
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set uy 5.91645678915759e-31
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set uz 1.05794851588922e-07
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set semi-angle [expr 0.785398163360967 / ${PI180}]
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set radius 0.560000000061149
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cone s1 ${x} ${y} ${z} ${dx} ${dy} ${dz} ${semi-angle} ${radius}
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set x -2.08647872350287e-07
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set y -5.78732475509323
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set z 13.2493436211
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set dx -1.05794850062242e-07
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set dy -1.39278350756825e-08
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set dz 0.999999999999994
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set ux 0.999999999999995
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set uy 0
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set uz 1.05794850062242e-07
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set semi-angle [expr 0.785398163396248 / ${PI180}]
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set radius 0.785398163396248
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cone s2 ${x} ${y} ${z} ${dx} ${dy} ${dz} ${semi-angle} ${radius}
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intersect ii s1 s2
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if { ![isdraw ii_1] || ![isdraw ii_2] || [isdraw ii_3] } {
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puts "ERROR. Intersection is wrong"
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}
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intersect jj s2 s1
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if { ![isdraw jj_1] || ![isdraw jj_2] || [isdraw jj_3] } {
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puts "ERROR. Intersection is wrong"
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}
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