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22316: EDF 2719 SMESH: Split hexas into prisms

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+  double GetDistance( const SMDS_MeshElement* elem, const gp_Pnt& point );
+  double GetDistance( const SMDS_MeshEdge* edge, const gp_Pnt& point );
+  double GetDistance( const SMDS_MeshVolume* volume, const gp_Pnt& point );
This commit is contained in:
eap 2014-01-20 10:35:19 +00:00
parent 0eac807ec1
commit d2c62e114d
2 changed files with 101 additions and 4 deletions
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96
src/SMESHUtils/SMESH_MeshAlgos.cxx
View File

@ -28,9 +28,11 @@
#include "SMESH_MeshAlgos.hxx"
#include "SMDS_FaceOfNodes.hxx"
#include "SMDS_LinearEdge.hxx"
#include "SMDS_VolumeTool.hxx"
#include "SMDS_Mesh.hxx"
#include "SMDS_PolygonalFaceOfNodes.hxx"
#include "SMDS_VolumeTool.hxx"
#include "SMESH_OctreeNode.hxx"
#include <GC_MakeSegment.hxx>
@ -743,7 +745,7 @@ SMESH_ElementSearcherImpl::FindClosestTo( const gp_Pnt& point,
{
const SMDS_MeshElement* closestElem = 0;
if ( type == SMDSAbs_Face )
if ( type == SMDSAbs_Face || type == SMDSAbs_Volume )
{
if ( !_ebbTree || _elementType != type )
{
@ -773,8 +775,7 @@ SMESH_ElementSearcherImpl::FindClosestTo( const gp_Pnt& point,
TIDSortedElemSet::iterator elem = suspectElems.begin();
for ( ; elem != suspectElems.end(); ++elem )
{
double dist = SMESH_MeshAlgos::GetDistance( dynamic_cast<const SMDS_MeshFace*>(*elem),
point );
double dist = SMESH_MeshAlgos::GetDistance( *elem, point );
if ( dist < minDist + 1e-10)
{
minDist = dist;
@ -1290,6 +1291,31 @@ namespace
}
}
//=======================================================================
/*!
* \brief Return minimal distance from a point to an element
*
* Currently we ignore non-planarity and 2nd order of face
*/
//=======================================================================
double SMESH_MeshAlgos::GetDistance( const SMDS_MeshElement* elem,
const gp_Pnt& point )
{
switch ( elem->GetType() )
{
case SMDSAbs_Volume:
return GetDistance( dynamic_cast<const SMDS_MeshVolume*>( elem ), point);
case SMDSAbs_Face:
return GetDistance( dynamic_cast<const SMDS_MeshFace*>( elem ), point);
case SMDSAbs_Edge:
return GetDistance( dynamic_cast<const SMDS_MeshEdge*>( elem ), point);
case SMDSAbs_Node:
return point.Distance( SMESH_TNodeXYZ( elem ));
}
return -1;
}
//=======================================================================
/*!
* \brief Return minimal distance from a point to a face
@ -1386,6 +1412,68 @@ double SMESH_MeshAlgos::GetDistance( const SMDS_MeshFace* face,
return badDistance;
}
//=======================================================================
/*!
* \brief Return minimal distance from a point to an edge
*/
//=======================================================================
double SMESH_MeshAlgos::GetDistance( const SMDS_MeshEdge* edge, const gp_Pnt& point )
{
throw SALOME_Exception(LOCALIZED("not implemented so far"));
}
//=======================================================================
/*!
* \brief Return minimal distance from a point to a volume
*
* Currently we ignore non-planarity and 2nd order
*/
//=======================================================================
double SMESH_MeshAlgos::GetDistance( const SMDS_MeshVolume* volume, const gp_Pnt& point )
{
SMDS_VolumeTool vTool( volume );
vTool.SetExternalNormal();
const int iQ = volume->IsQuadratic() ? 2 : 1;
double n[3], bc[3];
double minDist = 1e100, dist;
for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
{
// skip a facet with normal not "looking at" the point
if ( !vTool.GetFaceNormal( iF, n[0], n[1], n[2] ) ||
!vTool.GetFaceBaryCenter( iF, bc[0], bc[1], bc[2] ))
continue;
gp_XYZ bcp = point.XYZ() - gp_XYZ( bc[0], bc[1], bc[2] );
if ( gp_XYZ( n[0], n[1], n[2] ) * bcp < 1e-6 )
continue;
// find distance to a facet
const SMDS_MeshNode** nodes = vTool.GetFaceNodes( iF );
switch ( vTool.NbFaceNodes( iF ) / iQ ) {
case 3:
{
SMDS_FaceOfNodes tmpFace( nodes[0], nodes[ 1*iQ ], nodes[ 2*iQ ] );
dist = GetDistance( &tmpFace, point );
break;
}
case 4:
{
SMDS_FaceOfNodes tmpFace( nodes[0], nodes[ 1*iQ ], nodes[ 2*iQ ], nodes[ 3*iQ ]);
dist = GetDistance( &tmpFace, point );
break;
}
default:
vector<const SMDS_MeshNode *> nvec( nodes, nodes + vTool.NbFaceNodes( iF ));
SMDS_PolygonalFaceOfNodes tmpFace( nvec );
dist = GetDistance( &tmpFace, point );
}
minDist = Min( minDist, dist );
}
return minDist;
}
//================================================================================
/*!
* \brief Returns barycentric coordinates of a point within a triangle.

9
src/SMESHUtils/SMESH_MeshAlgos.hxx
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@ -100,9 +100,18 @@ namespace SMESH_MeshAlgos
SMESHUtils_EXPORT
bool IsOut( const SMDS_MeshElement* element, const gp_Pnt& point, double tol );
SMESHUtils_EXPORT
double GetDistance( const SMDS_MeshElement* elem, const gp_Pnt& point );
SMESHUtils_EXPORT
double GetDistance( const SMDS_MeshEdge* edge, const gp_Pnt& point );
SMESHUtils_EXPORT
double GetDistance( const SMDS_MeshFace* face, const gp_Pnt& point );
SMESHUtils_EXPORT
double GetDistance( const SMDS_MeshVolume* volume, const gp_Pnt& point );
SMESHUtils_EXPORT
void GetBarycentricCoords( const gp_XY& point,
const gp_XY& t0, const gp_XY& t1, const gp_XY& t2,