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22711: [CEA 1297] Regression of mesh with a projection on a spherical face

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In fixDistortedFaces() care of face planarity and degenerated edges
This commit is contained in:
eap 2014-09-29 15:50:55 +04:00
parent f39630902e
commit 079e65a9b1
1 changed files with 18 additions and 2 deletions
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20
src/StdMeshers/StdMeshers_Projection_2D.cxx
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@ -51,6 +51,7 @@
#include <BRep_Tool.hxx>
#include <Bnd_B2d.hxx>
#include <GeomAPI_ProjectPointOnSurf.hxx>
#include <GeomLib_IsPlanarSurface.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
@ -935,13 +936,23 @@ namespace {
for ( size_t i = 0; i < nodes.size(); ++n, ++i )
nodes[ i ] = *n;
// get UVs
// avoid elems on degenarate shapes as UV on them can be wrong
if ( helper.HasDegeneratedEdges() )
{
bool isOnDegen = false;
for ( size_t i = 0; ( i < nodes.size() && !isOnDegen ); ++i )
isOnDegen = helper.IsDegenShape( nodes[ i ]->getshapeId() );
if ( isOnDegen )
continue;
}
// prepare to getting UVs
const SMDS_MeshNode* inFaceNode = 0;
if ( helper.HasSeam() )
for ( size_t i = 0; ( i < nodes.size() && !inFaceNode ); ++i )
if ( !helper.IsSeamShape( nodes[ i ]->getshapeId() ))
inFaceNode = nodes[ i ];
// get UVs
uv.resize( nodes.size() );
for ( size_t i = 0; i < nodes.size(); ++i )
uv[ i ] = helper.GetNodeUV( F, nodes[ i ], inFaceNode );
@ -989,10 +1000,15 @@ namespace {
SMESH_MeshEditor:: SmoothMethod algo =
isConcaveBoundary ? SMESH_MeshEditor::CENTROIDAL : SMESH_MeshEditor::LAPLACIAN;
// smooth in 2D or 3D?
TopLoc_Location loc;
Handle(Geom_Surface) surface = BRep_Tool::Surface( F, loc );
bool isPlanar = GeomLib_IsPlanarSurface( surface ).IsPlanar();
// smoothing
set<const SMDS_MeshNode*> fixedNodes;
editor.Smooth( faces, fixedNodes, algo, /*nbIterations=*/ 10,
/*theTgtAspectRatio=*/1.0, /*the2D=*/false);
/*theTgtAspectRatio=*/1.0, /*the2D=*/!isPlanar);
}
}