- gp_XY uv[8] = {
- GetNodeUV( F,n1, n3, &toCheck ),
- GetNodeUV( F,n2, n4, &toCheck ),
- GetNodeUV( F,n3, n1, &toCheck ),
- GetNodeUV( F,n4, n2, &toCheck ),
- GetNodeUV( F,n12, n3 ),
- GetNodeUV( F,n23, n4 ),
- GetNodeUV( F,n34, n2 ),
- GetNodeUV( F,n41, n2 )
- };
- AdjustByPeriod( F, uv, 8 ); // put uv[] within a period (IPAL52698)
-
- uvAvg = calcTFI (0.5, 0.5, uv[0],uv[1],uv[2],uv[3], uv[4],uv[5],uv[6],uv[7] );
+ Handle(ShapeAnalysis_Surface) surface = GetSurface( F );
+ if ( HasDegeneratedEdges() || surface->HasSingularities( 1e-7 ))
+ {
+ gp_Pnt center = calcTFI (0.5, 0.5, // IPAL0052863
+ SMESH_TNodeXYZ(n1), SMESH_TNodeXYZ(n2),
+ SMESH_TNodeXYZ(n3), SMESH_TNodeXYZ(n4),
+ SMESH_TNodeXYZ(n12), SMESH_TNodeXYZ(n23),
+ SMESH_TNodeXYZ(n34), SMESH_TNodeXYZ(n41));
+ gp_Pnt2d uv12 = GetNodeUV( F, n12, n3, &toCheck );
+ uvAvg = surface->NextValueOfUV( uv12, center, BRep_Tool::Tolerance( F )).XY();
+ }
+ else
+ {
+ gp_XY uv[8] = {
+ GetNodeUV( F,n1, n3, &toCheck ),
+ GetNodeUV( F,n2, n4, &toCheck ),
+ GetNodeUV( F,n3, n1, &toCheck ),
+ GetNodeUV( F,n4, n2, &toCheck ),
+ GetNodeUV( F,n12, n3 ),
+ GetNodeUV( F,n23, n4 ),
+ GetNodeUV( F,n34, n2 ),
+ GetNodeUV( F,n41, n2 )
+ };
+ AdjustByPeriod( F, uv, 8 ); // put uv[] within a period (IPAL52698)