case GeomAbs_Hyperbola:
case GeomAbs_Parabola:
return false;
- // case GeomAbs_BezierCurve:
- // case GeomAbs_BSplineCurve:
- // case GeomAbs_OtherCurve:
+ // case GeomAbs_BezierCurve:
+ // case GeomAbs_BSplineCurve:
+ // case GeomAbs_OtherCurve:
default:;
}
- const double f = curve.FirstParameter();
- const double l = curve.LastParameter();
- const gp_Pnt pf = curve.Value( f );
- const gp_Pnt pl = curve.Value( l );
- const gp_Vec v1( pf, pl );
- const double v1Len = v1.Magnitude();
- if ( v1Len < std::numeric_limits< double >::min() )
+
+ // evaluate how far from a straight line connecting the curve ends
+ // stand internal points of the curve
+ double f = curve.FirstParameter();
+ double l = curve.LastParameter();
+ gp_Pnt pf = curve.Value( f );
+ gp_Pnt pl = curve.Value( l );
+ gp_Vec lineVec( pf, pl );
+ double lineLen2 = lineVec.SquareMagnitude();
+ if ( lineLen2 < std::numeric_limits< double >::min() )
return false; // E seems closed
- const double tol = Min( 10 * curve.Tolerance(), v1Len * 1e-2 );
+
+ double edgeTol = 10 * curve.Tolerance();
+ double lenTol2 = lineLen2 * 1e-4;
+ double tol2 = Min( edgeTol * edgeTol, lenTol2 );
+
const double nbSamples = 7;
for ( int i = 0; i < nbSamples; ++i )
{
- const double r = ( i + 1 ) / nbSamples;
- const gp_Pnt pi = curve.Value( f * r + l * ( 1 - r ));
- const gp_Vec vi( pf, pi );
- const double h = 0.5 * v1.Crossed( vi ).Magnitude() / v1Len;
- if ( h > tol )
+ double r = ( i + 1 ) / nbSamples;
+ gp_Pnt pi = curve.Value( f * r + l * ( 1 - r ));
+ gp_Vec vi( pf, pi );
+ double h2 = lineVec.Crossed( vi ).SquareMagnitude() / lineLen2;
+ if ( h2 > tol2 )
return false;
}
return true;
return error( COMPERR_BAD_INPUT_MESH, "Mesh built on shape expected");
}
+//=======================================================================
+//function : IsApplicableToShape
+//purpose : Return true if the algorithm can mesh a given shape
+//=======================================================================
+
+bool SMESH_Algo::IsApplicableToShape(const TopoDS_Shape & shape, bool toCheckAll) const
+{
+ return true;
+}
+
//=======================================================================
//function : CancelCompute
//purpose : Sets _computeCanceled to true. It's usage depends on