+ SMESH::TActorList anActorList = aPlaneData.ActorList;
+
+ double aBounds[6];
+ double anOrigin[3];
+ bool anIsOk = SMESH::ComputeClippingPlaneParameters( anActorList,
+ aNormal,
+ getDistance(),
+ aBounds,
+ anOrigin );
+
+ aPlane->myActor->SetVisibility( anIsOk && PreviewCheckBox->isChecked() );
+
+ if( anIsOk ) {
+ aPlane->SetNormal( aNormal );
+ aPlane->SetOrigin( anOrigin );
+
+ double aPnt[3] = { ( aBounds[0] + aBounds[1] ) / 2.,
+ ( aBounds[2] + aBounds[3] ) / 2.,
+ ( aBounds[4] + aBounds[5] ) / 2. };
+
+ double aDel = pow( pow( aBounds[1] - aBounds[0], 2 ) +
+ pow( aBounds[3] - aBounds[2], 2 ) +
+ pow( aBounds[5] - aBounds[4], 2 ), 0.5 );
+
+ double aDelta[2][3] = {{aDir[0][0]*aDel, aDir[0][1]*aDel, aDir[0][2]*aDel},
+ {aDir[1][0]*aDel, aDir[1][1]*aDel, aDir[1][2]*aDel}};
+ double aParam, aPnt0[3], aPnt1[3], aPnt2[3];
+
+ double aPnt01[3] = {aPnt[0] - aDelta[0][0] - aDelta[1][0],
+ aPnt[1] - aDelta[0][1] - aDelta[1][1],
+ aPnt[2] - aDelta[0][2] - aDelta[1][2]};
+ double aPnt02[3] = {aPnt01[0] + aNormal[0],
+ aPnt01[1] + aNormal[1],
+ aPnt01[2] + aNormal[2]};
+ vtkPlane::IntersectWithLine(aPnt01,aPnt02,aNormal,anOrigin,aParam,aPnt0);
+
+ double aPnt11[3] = {aPnt[0] - aDelta[0][0] + aDelta[1][0],
+ aPnt[1] - aDelta[0][1] + aDelta[1][1],
+ aPnt[2] - aDelta[0][2] + aDelta[1][2]};
+ double aPnt12[3] = {aPnt11[0] + aNormal[0],
+ aPnt11[1] + aNormal[1],
+ aPnt11[2] + aNormal[2]};
+ vtkPlane::IntersectWithLine(aPnt11,aPnt12,aNormal,anOrigin,aParam,aPnt1);
+
+ double aPnt21[3] = {aPnt[0] + aDelta[0][0] - aDelta[1][0],
+ aPnt[1] + aDelta[0][1] - aDelta[1][1],
+ aPnt[2] + aDelta[0][2] - aDelta[1][2]};
+ double aPnt22[3] = {aPnt21[0] + aNormal[0],
+ aPnt21[1] + aNormal[1],
+ aPnt21[2] + aNormal[2]};
+ vtkPlane::IntersectWithLine(aPnt21,aPnt22,aNormal,anOrigin,aParam,aPnt2);
+
+ vtkPlaneSource* aPlaneSource = aPlane->myPlaneSource;
+ aPlaneSource->SetNormal(aNormal[0],aNormal[1],aNormal[2]);
+ aPlaneSource->SetOrigin(aPnt0[0],aPnt0[1],aPnt0[2]);
+ aPlaneSource->SetPoint1(aPnt1[0],aPnt1[1],aPnt1[2]);
+ aPlaneSource->SetPoint2(aPnt2[0],aPnt2[1],aPnt2[2]);
+ aPlaneSource->Update();
+ }